Very informative presentation and concise. I just purchased the FS*5000 and am in the process of setting it up for my use, Your presentation has answered several questions. Thank you.👍👍
@@project-326 , I bought also a one due to your good presentation. The device makes a good impression to me and does what it should. Only the PRDMS application I could not get to work on a Win11 notebook. It fails to connect to the device. I asked the service for support and waiting for an answer. One feature I miss is, in normal operation mode, a long press on the left button, should toggle the radiation click sound. It would be nice, if they could add that to save the steps doing it in configuration. Some sellers seem to offer the device with a different Geiger-Müller tube (not the J321). Buyers should ask about this if it is not explicitly advertised as such.
Interesting info about this counter. Recently, there was information that the manufacturer decided to abandon the use of the J321 tube and began to install a no-name tube there, which is why the accuracy of the device has dropped. This is what the manufacturer writes in its official store on AliExpress: "We Promise: We will replace all products in the warehouse and produce new items with NEW J321 tube to ensure all items are J321. April 10, 2024" So in the end everything is not so bad and there is a chance that the device will remain the same as in this video.
I also just received mine from the official store it also has the small tube HH614 or something, very disappointing bait and switch. Could you tell me the value of Resistor R60 on the front of your J321 PCB. I guess R60 is the load resistor? Looks like I will have to swap the tube to a J321. R60 on mine is 2meg ohm 422v before the resistor and 352v after. Thanks for the great videos.
I have been in contact with the company, my campaign of pressure on them appears to have worked and they are now only shipping with the J321 if you buy from their official AliExpress store.
Hopefully their next version uses standard batteries. I bought it, but I'm super uncomfortable with the unbranded lithium ion battery. And in a real emergency, these will be useless if power grid goes down.
I really get your point on the replaceable, off-the-shelf batteries. I have recently been interacting with the so-called 'prepper' community and for sure using standard primary cells is a better match for that application. I was doing some research for a video I will be making, about a device that has been aimed at that community, which turns out to be complete snake-oil, but I did learn a healthy respect for this community on the most part, well at least the majority of them, ie those that are able to keep politics out of a discussion about radiation detectors...
If and when it happens, politics will be irrelevant. Silly people. BTW very happy with this model's performance (minus the battery), appreciate the video!
Unfortunately they don't ship it with the j321 anymore, they replaced it with some smaller shitty tube (no markings but it appears to be the j613/614), it's a shame another cheap product has gone to shit
This is false. I just got mine and it has the correct j321 tube. There was a mix up somewhere in manufacturing and some were made with a tiny tube that has like shrink plastic around it. If you contact them about this thy will get it resolved.
@project 326 Hi thanks for the immensely informative videos you create they are invaluable and entertaining. May I ask what your choice would be for an enthusiastic noobie to this field. The fs5000, NR850 or GQ GMC800 OR indeed anything better within the constraints of cost sub £150. Thank you so much.
Of those devices, I have only tested the FS-5000, so its hard to say. In the sub $50 class, this one really does it for me. Basically since I found this, I have moved away from buy and reviewing cheap counters...
@@project-326 that’s fair to say. Thank you. I ordered both the fs5000 and an NR850. The quality on the NR850 is quite lacking with a J321 tube soldered directly to wire and held, almost, by sticky a pad which will fail. AA batteries are good and results from both machines are comparable. Thanks again.
Hmmmm guess this is the one I'll actually buy. As the communication appears to be serial I'll try to add a simple serial-over-bluetooth to the device and try do simple protocol decoding on Android for the lack of features you mentioned.
@@project-326 Hello there! So my super fast forwarder finally delivered the item. Before jumping to hacking serial I got some common sense sanity to do. My unit measured about 0.14uSv/h in the office and tube voltage measured 325V. Unfortunately I don't have any uranium laying around so do I need to mess with the HV PSU?
@@project-326 Hello, I managed to flash my Bosean fs5000)).It became very fast, although it began to show a lower dose of activity, but I think it just needs calibration.
@@georgiy0077 How is the display? I must admit I found the GISSIO UI a little 'boring'. There is a calibration factor that can be changed in menu and also in the PC application. With the new firmware, does the device still work with the PC application?
Hey, it´s me again, the guy with the FS 5000 with a short tube. Meanwhile Bosean replaced it with a new device production date 07/24 and with a J321 tube inside. Me happy now. 😁 Question: measuring some 0.30 micro Sievert on top of a sample with the back plate attached. Without back plate and with the tube therefore touching the sample up to 0.9 micro Sievert. Normal? Is that due to some millimeters more distance or is it the back plate itself? And which one is the "correct" value? 🤔
actually both are correct. Sometimes it can be helpful to think of radiation like a light bulb. The further away you are, the lower the measured brightness will be. This is where the famous inverse-square-law comes into play. Please take a look at the wikipedia entry on that relationship. I hope that helps!
Thanks for the great review. For this price, I don't think there is a better one on the market. I've been using it for a few months now and you confirm my opinion.
First Just finished the video, and I'm amazed like it's cheaper and better than most geiger counters 😮 If I wasn't saving up for a kc761 and new sources I could get my self a unicorn in a heartbeat
Thank you for the video. I really enjoy watching your review videos. So far, I had the GC-01(J321) and XR1 Pro(M4011). I may get this FS-5000 as well(thanks to your reviews). Have replaced a big buzzer in size to get a louder clicking sound(with the 100nF cap shown in your other video).
Just got my new Bosean FS-5000 which cost around USD55(best price). But it comes with a J613 tube instead of a J321 tube. Is much better to go straight for a better one like Radiacode 103...
Thank you very much, I really enjoyed your style, and found the information very detailed and thorough! I just placed an order, looking forward to testing this out, now that I'm armed with so much useful information about the device!
Great review! Thank you for the links. I think I will purchase this item as my first Geiger Counter but may eventually get a Radiacode or a Radsys unit for carrying with me on hikes/shopping. Thanks again for the great channel!
I order on Aliexpress official Bosean store: they send me FS-5000 model with wrong tube, probably J313/314. They finally refund me half the price of my order. They said that there was a mistake in their warehouse and that in future, all FS-5000 models will come only with J321 tube.
How important is it to detect alpha radiation? And how important is it from a purely safety perspective to know the type of radiation you are detecting or is Sieverts truly giving you the intensity of ionizing energy that can harm me or my cat? I'm so torn between the Radiacode 102 and the FS-5000. I'm just a low level enthusiast and can't imagine I would need to identify isotope in the middle U.S. with the exception of wandering around or near a decommissioned nuclear power plant in my area. Yes, I did just purchase a $200 vacuum pump so I could expose some friends kids to deflating marshmallows and keeping my nuts (pistachio and cashew) from losing their snap... Any insight and/or advice would be appreciated. I do love your videos which includes enough explanation and demonstration so I know you aren't a wanker. I've subscribed and look forward to more.
All all depends on how much you want to spend. Personally, I would go for a reasonable quality low cost device. Alpha is pretty hard to detect anyway, for example it won't get through more than 30mm of air (take a look at my Alpha spectrometer video) and devices that are capable of measuring Alpha are usually an order of magnitude higher in price. I found that the FS-5K was actually better at measuring the secondary cosmic rays when on an airplane than the RC102 (most of that radiation is in the form of betas). Summary: Start cheap and work up if you find an interest in the subject. Sometimes I can be a dick but seldom a wanker...
@@project-326 Thanks. How important is it to know the energy level of gamma radiation with respect to sieverts? Again, I'm dabbling and am currently residing in low rent housing of the Belle curve. But, if I am understanding kev, gamma from Am241 is a lot more tame than Cs137 or whatever else that might be hotter. I will prob end up getting the FS-5000 and in short order wish I had both... Btw, Hans Geiger was a jerk. When Hans Bethe lost his position in 1933(35?) Geiger was unsympathetic and could have helped. I'm not shit stirring, I'm reading a book on the making of the atomic bomb and assumed brilliant minds where noble as well. I have no idea if Hans Geiger was a malcontent, but that bit between the two stuck in my mind.
@@alastairbrickell8813 My personal opinion here: The RadPro software is really good BUT - it doesn't work with the Bosean PC application and having the ability to offload data is one of the best features of this product (take a look at my beta back-scattering experiment video I did using the FS5000). I know that there is a way to do that in RadPro with command line scripts, etc, but frankly the convenience of an app keeps be from changing to the RadPro on this device. For crappy counters like the FNIRSI GC-01, for sure, the RadPro is a great upgrade, there isn't any useful features to lose...
Is this really your voice, @project-326 , or an AI tool? As others have commented, it's very robotic. Having seen most of your videos, I'm rather used to it by now however I'm genuinely curious.
I like that it has instant and average readout. My only "modern" meter is a GMC 320 Plus and it only shows average but it takes ages before it reaches the correct level. My older meters all have instant readout only.
Very well done! I might just buy a _Bosean FS-5000,_ but more for searching, finding, and detecting sources, rather than more precise measurements. I do use the _SEI Inspector USB_ (v 2.13) G-M counter, and it's an excellent device, despite being discontinued, with the newer _SEI Ranger._ These both use the LND 7317 "pancake" G-M tube, so they can detect alpha (> 2 MeV), beta (> 50 keV), and gamma (> 8 keV) through the mica window. They also have a scaler/timer function and built-in isotope efficiencies-which the values for can be changed, so you can measure isotopes in DPM and Bq. By the way, what are your thoughts on the _SEI Inspector USB_ and _SEI Ranger_ G-M counters? If you do know, please give your honest opinions, as I'm curious to know. I think they're great units! Thank you!
No problem! Thank you anyways! I enjoy your videos! It's great to find a channel on someone who is knowledgeable in said subject! Unfortunately, A lot of others don't know what they're doing!
Yes, that is absolutely true but... even the cheapest alpha capable tubes cost more than the total cost of this product, and alpha particles have a range of just a few cm in air, most GM tubes that are capable of detecting some alpha, lose energy across the mica window so the actual detection range is usually less than 2cm. One effective way to detect Rn-222 is to use a gamma ray spectrometer and look for gamma peaks that correspond to the Uranium decay chain. Sadly, this kind of kit costs a lot more, please see my reviews of the Radiacode 102 and Measall KC761 for some background.
Perhaps the sensitivity is related to the exposure of the GM tube. Rather than sealing the holes, perhaps some type of sliding door can be implemented, so that the device can be protected in tough environments, and then opened when more sensitivity is required. For software, I suggest the manufacturer lets the enthusiast community write their own software, but either making their software's source code available or by providing details about the raw data coming from the device. I could probably discover this by means of a USB tap device, but it would be better to just have it presented.
I agree with you, it would be great it they produced an open platform. I guess there is a compromise between commercial prudence and user engagement to be found. I think that Gissio is looking into the FS-5K right now...
Can anyone please check something with their FS-5000? The J321 tube has a conversion factor of 153.8 This means to get uSv/h you divide the CPM by 153.8 and you get uSv/h On background radiation level, this seems correct: If I get 20 CPM, the FS-5000 shows 0.13 uSv/h (20/153.8=0.13). But at higher readings, the FS-5000 shows uSv/h that's way above what it should be: 350 CPM translates to 3.94 uSv/h. As I see it, this should be 350/153.8= 2.28 uSv/h. My other meters (a GMC-320+ and a Soviet RKS 20.03) confirm this by reading close to 2.28 uSv/h. So, is something wrong with my meter or is there something wrong in software? The fact that my other 2 meters are showing way lower uSv/h make me think there's something wrong with the FS-5000
@@project-326 Yes, they both do. But why would it matter? The hardware of a geiger counter can only do 1 thing: register counts. It's up to the software to translate this to uSv/h. And if my GMC-320 and FS-5000 are showing the same CPM then they should also display the same uSv/h. I'm trying to figure out why the FS-5000 is converting CPM to uSv/h with the 153.8 factor at background level radiation, but starts displaying considerably higher numbers at higher radiation levels. Perhaps it's multi point calibrated (we don't know) but this would mean the J321 tube is very non-linear. But even then, why do the GMC and RKS translate the same CPM to much lower uSv/h levels?
@@Ni5ei I understand the confusion now, I apologize for not understanding this question clearly before. With a J321 tube, like any GM counter detects counts but not equally in the energy bands. All GM tubes have different sensitivities at different energy levels. Try to think of this in terms of statistics, if tube A has a detection probability of X at, say, 100 KeV and tube B has a detection probability of Y at the same energy level, then neither cps or converted Sv/h will be the same. For broad energy sources, such as background, tubes can be calibrated to read the same, but that doesn't mean that at any specific energies (say a Cs-137 source) will read the same. This is one of the reasons why an energy compensated gamma ray spectrometer is always better (but it will miss other radiation sources). Sadly, there isn't any detector that can measure all of the predominant decay modes and come up with a definitive answer. Essentially, you need to know what type of radiation you are measuring and at what energy level, then find a detector that is specific to that application to be able to get a good result. All detectors are a compromise... I do hope that helps, but please feel free to ask about anything you are unsure of, if I can, I will try to answer.
@@project-326 Thanks for the extensive explanation. I appreciate it. Still, I really would like to see some CPM and uSv/h readings from other FS-5000 users to see if they match. I've been trying to get these for quite some time now but can't find people who own one. I've tried Reddit but didn't get any sensible responses there so that's why I've posted it here. All I need is a few x CPM = y uSv/h results to see what other FS-5000 counters are doing. And if it's indeed using different CPM to uSv/h factors depending on the scale of counts, this would also be the reason the FS-5000 is showing completely different readings when you install RAD Pro on it. Because RAD Pro only uses a single 153.8 translation factor. Here's a result of measurements I've made: same source, same hardware, using stock firmware and RAD Pro: FS-5000 stock firmware: 87 CPM = 0.75 uSv/h FS-5000 RAD Pro firmware: 85 CPM = 0.55 uSv/h Stock firmware displays uSv/h almost 40% higher than RAD Pro on the same hardware.
I'm pretty happy with mine. One thing I wish they'd done is make the second display style (you can choose between "Concise style" and "Compact style") would simply be accessible as an extra page on the main display. As it is now, the up/down buttons let you choose between Sv, Counts and Graph. It would have been very simple to add a fourth page where you get the "Compact style" view, displaying real time Sv, average Sv, counts p/s, counts p/m and total dose all at once. It takes quite a few button presses to change this in the menu and could be so much simpler.
Flashed my FS5000 with the Radpro firmware today and monitored it with the Geigerlog software. Impressive, both. The original firmware is automatically backed up and can be restored just as easily. Radpro allows tube selection and deadtime & background count setting. The interval between log entries is configurable. Lots more, like a true random number generator. There is even a chess game lol.
@@Ni5ei What did you lose? I like the ability to fine-tune the counting algorithms, tube selection, dead time, background count and most of all the ability to communicate with Geigerlog. I miss the display and graph colours though.
@@42phaedrus Not just the display colours, but also the amount of different values you can see on the display without having to press any buttons. The device has a very nice display and this all goes to waste.
Update: I was wrong, it does still come with the J321 tube. With the change to using a shitty tube what’s the possibility of modifying it to take a much nicer tube like a pancake.
I agree, it would be even nicer to be able to change the unit to mRem.. that is a nice and toasty source you've got there my friend! Great review and for $48 It's pretty difficult to beat! I hope people get on board and the company can do some of your suggested upgrade !
I had the HFS-10, but it was pretty bad. I've been eyeing this Geiger counter for a while now, but there were no videos I wanted to know what tube it had. Thanks for this video, I just bought one.
Great video! I've actually been sort of looking for a Geiger counter, but since I don't do anything with radiation or ever expect to encounter any, I don't want to spend much. But there's no point buying a cheap detector if it doesn't work! I like the suggestions, especially the Bluetooth one - while the biggest wins there are geolocation and storage capacity on a linked mobile, it would also allow the use of noise-cancelling headphones in place of the piezo sounder for the particle clicks.
Does anyone have any experience with the GQ GMC-800 device. It looks impressive but I don't know how it fares with accuracy. They also contain the J321 tubes but do not have slots cut in body to expose the tube. I would think that would reduce the effectivness?
Thank you for your review i think i my purchase one of these after buy the Total Piece of Shite called the GC-01 from amazon. I only need a basic unit to detect and protect me whilst exploring. Please keep up the grat work.
I bought one of these-for approximately the same price, thanks to your excellent reviews! I'm going to test it with many of my sources and radioisotopes! I really like and agree with your suggestions-for improving it! I think it should come with a protective silicone or rubber boot or case with a transparent window-for reading the TFT screen, which would make the device even more resistant to shock, moisture, dust, and water. A reset button/feature (for zeroing the counts), and a fast and slow response for the counting average would be nice, too. I don't expect it to be perfect, but for the price and design-I find it very promising, which I hope the developers will improve upon in the future, thus releasing upgraded models and designs. This will also be my first Chinese-made G-M counter-when it arrives! I'm excited to find out what this low-cost unicorn is capable of! There's also a Rad Pro firmware upgrade available too, which hopefully improves its performance even greater than before! Thank you very much! I really appreciate it! Cheers from the USA, and have a nice day!
Thank you for the awesome feedback! For sure we should not expect miracles for this kind of price, but it's nice to see that it a rugged product and does what it says. Not sure if Bosean will make another one, their main business is with gas detectors and they have a very good reputation in that market. I think that the volumes that they ship of their GM counter products is kind of small compared to the other product lines. Shame really, they are a good company with products that are quality-but-at-a-price ethos. I'm pretty loathed to install RadPro, I wasn't able to get the free PC app to run, so I am very reluctant to lose PC data collection capabilities. The silicone bumper idea sounds like a nice idea, but to be fair the product is made from GRP and not just the standard PC-ABS mix that most other products use. My kids always take this device if they are going on school trips. If cheap enough to replace if they lose it but good enough to give results to show to their teacher. On a recent school trip that involved a local flight, my eldest son scared the pants off the teacher when he said "Teacher, look 30x radiation and rising".
Sure thing! You're videos are quality and thorough, which is always great to see! A lot of others' videos lack that. My Bosean FS-5000 G-M counter arrived today! Thank you very much! For a cheap G-M counter, it really is quite nice! It has a very simple UI and a nice TFT screen! It also has very good sensitivity, since it came with the J321 G-M tube, and not with the J613 G-M tube, which some of these have or had, which I think was due to a manufacturing error. I think Bosean should develop and improve more of these G-M counters. I think if they're truly determined to do so, they could make some really nice G-M counters and improve older units. Sooner or later, when I'm not too busy, I'll do some measuring and post a list-style comment on the actual activities from various radioisotopes and sources I have, and their detected activities in CPM and μSv/h-from the Bosean FS-5000. By the way, that story about the 30X background scaring the teacher cracked me up! That's cosmic radiation for ya! It's a natural, yet very interesting phenomenon! Cheers from the USA and have a wonderful day!
I read somewhere that some units come equipped with the dreaded horrid J613 Geiger-Muller tube, just like the newer FNIRSI GC-01. I've just bought an FS-5000 from the AliExpress official Bosean store linked below (48.06€). It is scheduled to be home in a few days. I'll open it up and see whether I'm lucky or not and report here.
Showing measurement Data in Microsievert per hour is quite hyperbolic. The presentation in These values IS strongly model dependent and depends one a lot of assumptions. Errors of a factor of 2 or even more IS highly likely. Therefore I understand that you might never get a calibration certificate from the manufacturer. (Sorry for the typos, my Germany autocorrection IS a pain)
No problem with the English, I'm British so mine can be pretty terrible at times too. Thank you for the feedback. Yes you are absolutely correct about the counts to sV/h calibration. Clearly, this tube, and all of the tubes in cheap counters have horrible peaks in the sensitivity curve across energy levels. And that is just for gamma, for betas, the situation is actually worse. Typically I allow around the kind of tolerance you mention for these kind of measurements. Mostly I am interested in the ratio between measurements for each of my sources, which I know quite well. For my strong point source, the Sr-90 check source, I'm just trying to find out if the counter will saturate before the tube does (many of them do). To have any kind of serious measurement, a lot of money needs to be spent - what this video, and my other counter reviews is attempting to do, is to help those people that either don't want to spend hundreds, or even thousands but still want something that will be reasonably useful in general applications. It kind of also about learning. So many times I see in the comments that a viewer has bought something like this FS-5000 and now wants to learn more and will ask a lot of questions. That alone makes it worthwhile, there is so much disinformation out there with regards to nuclear physics. Every one person that can pull out a counter and check something that they are told, is worth 100 people that just accept that everything 'radioactive' is bad. I have gotten board counting the number of people that still think gamma ray irradiation of food is making our food radioactive.
To Dubois, PA, the Aliexpress price is $83, and the Amazon price is $60, both freeship(cheap and fun in my opinion). Thanks for the video "Jim" I have been following you for a while now and enjoy the content.😊
here is the link to the Aliexpress Bosean official store: www.aliexpress.com/item/1005005307226616.html?spm=a2g0o.productlist.main.5.1325c7483xPI9A&algo_pvid=66ee5bb6-0c9d-470c-98fd-a2bf893f2495&algo_exp_id=66ee5bb6-0c9d-470c-98fd-a2bf893f2495-2&pdp_npi=4%40dis%21USD%2168.68%2141.21%21%21%2168.68%2141.21%21%4021059dbe17108127581582196e9627%2112000032570843125%21sea%21HK%212881401294%21AB&curPageLogUid=YeUAKbn0coue&utparam-url=scene%3Asearch%7Cquery_from%3A
great device for the price, as a review, but competition from the US that counters are several times the price is not sleeping, they decided to drop cylindric tube based counters! :-)
@@project-326 the most affordable pancake tube GM, that with some extra equipment and duties was 800 US$, Inspector from s.e.international. Their swiss distributor for EU sold it under the double price. So their site shows they do no more offer cylindric GM counters, but just added an energy compensated pancake tube. However their cylinder tube model is available rebranded as medcom rad100 at 475 US$. It should be added about 20% duties for import to EU.
I already have a NUKEALERT keychain detector, which is sold by KI4U in TEXAS. It is always on and has a battery life of at least 10 years. I just ordered this BOSEAN detector as a backup and I plan to keep this Bosean permanetly hooked up to USB power source, so it is always on. I think it would be nice to have 2 detectors running all the time, just to ensure if 1 of them starts detecting radiation, the other unit should also detect it...and if not, it reveal that maybe the 1 detector that is alarming is malfunctioning.
I might look at the NR-750 at some point, but for the next few videos I want to focus on experiments using the equipment that I have already accumulated.
There is an interesting indie design model KB6011(2024) with a J305 tube plus a PIN diode as sensor on Taobao. I'm curious how the sensors work together. I've been using their old model KB4011 from 2021 and it's already the fastest in terms of response time among my other devices. I see that the tube is covered with metal foil, probably for energy compensation, but I don't have a proper source to test it. I'd appreciate it if you could review it sometime.😉
I would have normally expected this to be able to add 'alpha detection' capabilities to the specification. In this case, I have no idea, alpha isn't included in the spec and its covered in the plastic case anyway. I guess I just looked at the same TaoBao advert as you, that has a a J321 & J305 tube wrapped in copper foil and kapton tape, which they seem to claim gives a 20% to 30% increase in sensitivity, which is clearly BS. Frankly, if I buy any more counters, my wife will kill me. PIN diodes aren't any where near as sensitive to gamma as a J305 GM tube, perhaps it is used to extend the lower energy boundary for betas or x-rays...? Maybe they realized that Measall made a name for including the PIN diode in their products and its just a marketing gimmik...
@@project-326 Thank you so much for taking the time to provide a thorough explanation of this issue, which resolved my confusion about the PIN diode. I also read some literature and found that the PIN diode has a detection rate of less than 0.5% for relatively higher energy gamma rays, so it's really hard to justify the claim that it improves sensitivity.
@@project-326 Hope things are going well! A small update on using a PIN diode as a radiation sensor. Out of curiosity, I tried an open source project, stefanoaz/Particle-counter-V2 from Github (UA-cam seems not to let me attach links directly) and it worked. The idea is simple, shield PIN diodes from light using grounded copper foil and amplify the pulse signal from radiation particles dumping energy into the diode. Using an oscilloscope I got 1-3 CPM from the background and 50-60 CPM from a thorium lantern mantle. The sensitivity was not impressive, but it was still exciting to be able to detect radiation without the presence of a Geiger-Miller tube (and high operating voltage).☺
right here: www.bosean.net/wp-content/uploads/2024/03/Personal-Radiation-Dose-Management-System.zip There are two versions of the SW in the zip file, try the first one, if you can't get it to connect try the second version.
Looks like a good unit and features for the price. Definitely does NOT need EMF circuitry which is mostly for the ghost detecting goofball crowd anyway.
This unit is currently $41 on aliexpress . Im wondering if they marked down the price, due to them having a upgraded model to be sold sometime soon ? For $41 shipped, this seems like the best deal out there, for a decent unit .
This looks nice, in a basic but does the job kind of way. Thank you for taking the time to make these videos, I find them informative and enjoy your sense of humour. Now I have to decide what to do, I almost brought a radiacode 102 on eBay today but got outbid in the last few seconds (it went for £160). The choice is either wait for another 102 to pop up or get something cheap and simple like this. Obviously I could spend a bit more on a new 102 but then I will probably get raped by customs and charged import duty plus a pointless handling fee.
Do you go scrumping often? Im always looking for new samples to buy. I have a fairly hot sample from the 70s used by the ARC. I also have a Bicron Analyst with a pancake probe, as well as a newer digital meter. Im trying to get my hands on some DU 30mm rounds my vet buddy brought back from Iraq.
We have been a couple of times, there are 2 videos about those visits on this channel, if you are interested... Wow - access to DU, something I would never get here. It would make for a great sample that can be dated via the ratio of the iostopes using a simple gamma ray spectrometer like the Radiacode or KC761...
I wonder how the device itself communicates as far as what it communicates exactly over serial is. Might not be too hard to write a custom interface library. I've been curious about getting a Geiger counter, I may pick one up.
The reason I made this video, was exactly for people like yourself. Each time I review one of my counters, I always get asked, "What is the best cheap one?", hopefully I have finally answered that question! The next thing you will want, is sources to test your new counter. Then you will probably start to ask some interesting questions and want to perform some experiments that you can do yourself. Before you know it, you have a new hobby. Have fun!
Hello, sir. Please, I'm looking for an affordable Geiger counter that can detect multiple types of radiation, including alpha particles. Do you have any recommendations?
@@rafaellavratti The best thing to get it that case is a gamma ray spectrometer, such as one of the Radiacode devices. It can detect the presence of those isotopes (Rn222 and Th232) by seeing what is happening in the decay chain. You are not going to be able to read above background looking at alpha from Th232 - the half-life of this isotope is longer than the current age of the universe. What you will be able to detect is the many associated gamma emissions that accompany alpha and beta decays in that decay chain. Rn222 is also difficult to detect directly as its half-life is less than 3 hours. Again, a gamma ray spectrometer will allow you to infer its presence due to the decay chain products. Alpha detectors tend to be pretty expensive, you will certainly pay more for a reasonable one compared to a Radiacode product and the alpha detector will have a lot less general use cases. Hope that helps...
@@project-326 Thank you so much for your response. I really appreciate it. If I may, I'd like to ask another question to take advantage of your expertise. Given that the Bosean FS-5000 is quite affordable, could it detect a hidden source of radiation in this old house that I bought, such as a piece of iron or steel that got contaminated, or any other object exposed to radiation? Do you think I would really need a GR spectrometer like the Radiacode, or would the FS-5000 suffice for this purpose? Thank you for your time and patience.
@@rafaellavratti Yes, the FS-5K is a very good detector, but you will need to balance the sensitivity that you need. GR spectro like the RC102/3 will be about 30 to 50 times more sensitive than the FS-5K. This translates to how long it takes to be able to get a background reading. The time needed is pro-rata as the sensitivity.
If I recall there was a project where everyone around the world had devices that reported in readings like Geiger counter etc. what would be great is a world wide network of people with a box that measures humidity , temp , light , wind , x-rays, cosmic rays , over time .
Thanks for the nice review! Since your power supply is up and running, have you tested the soft x-ray sensitivity for the BR-6 as well? Would love to know if it is able to detect soft x-rays too.
@@project-326 Thanks, that was what I was hoping for. Is the J321 is the same tube as the M4011? I was worried that it would have a bad detection efficency and could only detect high energy x-rays as you mentioned is the BR-6 video. You seem to be the rainbow shitting unicorn when it comes to Geiger counter reviews. Love every video. Thanks again for sharing your valuable knowledge :-)
@@brigittenieen3942 The J321 and the M4011 do seem to be very similar in performance. Glad you enjoy my little channel, I'm just sharing what I learn as I go.
I have never tested that particular unit. I do own some other CEM instruments and my observation is that the UI for these device is very simple, a little too simple by today's standards.
My NR-750 also has the J321 tube in it and Ive been teting it for the last 2 weeks. I put 2 AA eneloop batteries in it and left it on 24 hrs per day. It is still runn ing 2 weeks later with 50% charge left in the batteries. It looks like it will run for a full month on 2 AA batteries being left on so it can monitor radiation levels fulltime. Not bad for a $50 unit.
Bruh, why you gotta hate on weapons and stuff 93? I'm subscribed to your channel and will stay subbed, but don't make fun of him, he knows quite a bit about radiation! :) Anyway, have a good day! :D
Yes, you are quite right, I shouldn't do it... I'm sure he has very good knowledge on quite a few topics, but perhaps the dangers of ionizing radiation is not one of them. I worry about his unnecessarily risky 'experiments', especially now that he has that x-ray source and seems to be busy imaging himself. I do actually respect him as a person, I was impressed with his defense of LGBTQ subscribers when hate speech was involved. He gets 10 out of 10 marks for being a decent chap. In my last video about the FNIRSI upgrade, I did a funny section about him and I actually wanted it to make him laugh too. There is absolutely no hate, its just a bit of fun.
Testing food/water is difficult for any detector. Anything that will be consumed needs to be checked very closely and usually requires a fairly long duration test, even with a big expensive detector.
I wanted to buy it today and contacted the seller for details as they did not have any description on the product. Sadly I got a reply that they replaced the sensor and do not recommend the purchase of the product now, which is quite strange and sad.
@@project-326 Sure, I made a collage in Google Drive and made a reply with the link but not sure if you got it, as UA-cam hides them by default. Did you get it?
Great information, review, and overall content. Love your language and honest nature. The audio is a problem. The segue 'noises' and background 'music' was unpleasant and twice I was startled and almost stopped watching. Audio seems the simplest mistake and can cause a new channel to appear amateurish.
thanks for the feedback, I will pay more attention to that next time. It probably because I have reasonable monitor speakers and they don't represent the typical audio reproduction situation (ie smartphone, tablet, PC, etc) Cheers!
Unfortunately not, but I hear pretty good things about it. I think it uses the same J321 tube as the FS-5000 does, so in terms of raw sensitivity, its going to be the same. So it kind of comes down to features of the firmware, etc...
@@project-326 tx. Showing battery is always important because of finding replacement sources before decision to buy. I prefer 18650 always if the device itself isnt bad.
@@SirWerner.. This is a flat rectangular Li-Po pouch cell. It fits in a "frame" of four low rails in the back cover. There are many Li-Po cells of a similar size and form factor on the market.
I also wanted to buy one, but noticed a comment here saying they replaced the tube. It seems to be true, I contacted them asking about the sensor and they responded : "Recently replaced with a new Geiger tube." Maybe it's worth investigating.
Really? When I got this one, just a over a month ago, I also asked the same question and was told that it used the J614. Perhaps the sales team are thinking of the lower cost models...
I did the same. If you bought it from their official store you are ok in a way because you will get refunded. I didn't and now i try to contact the seller.. A new fiasco!
These things happen and it is almost never due to 'fakes'. They are all made at the same factory and the retail customer has price/performance options when ordering the product. The FNIRSI brand themselves told be that they have changed the tube on three occasions as they constantly "strive" to reduce the cost. I have reports that Bosean has recently done the same thing to the FS-5000.
Yes, I noticed that too, I previously used some really low activity rods for a thorium measurement and the FS-5K gives a really stable measurement on those, in spite of the low activity.
Well, I never want to influence purchasing decisions. If you already own a basic Geiger, perhaps consider a gamma ray spectrometer, if you have an interest in this subject...
I'm sure there must be industrial solutions that do that, though I imagine that they are going to be at the pricing levels that match their customers expectations, ie the IAEA (UN) and nuclear power plant operators...
I've reviewed things like torque wrenches and similar and they have a calibration certificate that has a serial number, but everything else like the test results are the same as ones other people reviewing got.
just watched another video where they checked this meter against some other chep ones and more expensive ones... this Bosean was completely out with the readings... to avoid
@@davehimlin2374 hi thank you for replying to my comment i watched back that video ( ua-cam.com/video/wxuKvUHRmsY/v-deo.html ),, this lady is looking at different meters and is testing the fs600, I understand that you are testing the fs5000 which should be a great improvement from older models but if Bosean didn't calibrate that Geiger counter I have to assume that they don't calibrate them properly or at all... unfortunately I don't think I could trust Bosean products, however thank you for your video it's very well done
So the J321 tube, will be 1 microseveirt per 60 CPM on all geiger units which contain the J321.. or would other units that use J321 tube, have a different CPM to MICROSEVERT calculation based upon their software and if they used a different source, like CS137 ? Also, since they test it with CO60 and got 60 CPM= 1 microsevert , would that calculation be the same, when using this device to measure radiation in a nuke detonation event or nuclear power plant leak ?
OK, this is a complex subject. Different gamma energy emissions will result in a different statistical average for generating a count event in the tube. So A Co-60 and a Cs-137 source that emits the same number of gamma photons (but at different energy levels) will have a different statistical chance of being detected. Co-60 has a higher energy photon emitted per decay than a Cs-137 decay. Usually, tubes are calibrated for Cs-137 because the energy level of each gamma photon is close to the middle of the detection band that that tube can work with. There are 2 ways to improve the situation: (i) Use an energy compensated GM tube (expensive) (ii) Buy a gamma ray spectrometer that compensates for the energy.
@@project-326 According to Radpro developers, the conversion factor for the J321, M4011 and SBM-20 is 153.8 versus 60 for J613. It is, as you said, pretty much a thumb-suck but imho on these cheap instruments the repeatability is more important so that the user can have a reliable indication of relative intensity.
Great stuff. I just bought this on amazon "MOESAPU Geiger Counter Nuclear Radiation Detector Nuclear Water Seafood Detection Radiation Dosimeter with LCD Display, Portable Handheld Beta β Gamma γ X-ray Rechargeable Radiation Monitor Meter" it looks identical to the Bosean ... Are they the same???
Great video, I was just about to purchase one until I got to your recommendations, and with my luck, the manufacturer will come out with an improved version not long after I buy mine. I think I'll hold out and see if they do in fact come out with an improved version.
This is the story of my life, I bought the KC761 just before they released the 'B' version, the RC102, days before they reduced the price by $100, and so on. I bought this Bosean product myself (I have only ever been given one product for free), I don't tell the vendors that I do reviews until I need some help with technical information or if I really hate the product, just after I release the product so I can count the thumb's down numbers. For example, I now know that the team behind the Gamma scout only has 8 people world-wide, working directly for them. I hate that thing...
![FNIRSI GC-01 [IMPORTANT PRODUCT UPDATE] ☢️](/img/n.gif)
Great video, lots of good info, no bullshit, says it like it is.
Experiments, technical reviews and some profanity. What a coincidence, these are my three favourite things. Thank You kind robot-voiced stranger.
Your welcome, bleep, bleep bloop. 1001101010010100011100011001101100010101110011
@@project-326that’s the letter s lol
@@jtcustomknives that is correct, my human overlord.
my 3 favorite things as well
Very informative presentation and concise. I just purchased the FS*5000 and am in the process of setting it up for my use, Your presentation has answered several questions. Thank you.👍👍
Glad it was helpful!
@@project-326 , I bought also a one due to your good presentation.
The device makes a good impression to me and does what it should. Only the PRDMS application I could not get to work on a Win11 notebook. It fails to connect to the device. I asked the service for support and waiting for an answer.
One feature I miss is, in normal operation mode, a long press on the left button, should toggle the radiation click sound. It would be nice, if they could add that to save the steps doing it in configuration.
Some sellers seem to offer the device with a different Geiger-Müller tube (not the J321). Buyers should ask about this if it is not explicitly advertised as such.
Interesting info about this counter.
Recently, there was information that the manufacturer decided to abandon the use of the J321 tube and began to install a no-name tube there, which is why the accuracy of the device has dropped.
This is what the manufacturer writes in its official store on AliExpress:
"We Promise: We will replace all products in the warehouse and produce new items with NEW J321 tube to ensure all items are J321.
April 10, 2024"
So in the end everything is not so bad and there is a chance that the device will remain the same as in this video.
People pressure works! I have been badgering their team directly here in China...
I also just received mine from the official store it also has the small tube HH614 or something, very disappointing bait and switch. Could you tell me the value of Resistor R60 on the front of your J321 PCB. I guess R60 is the load resistor? Looks like I will have to swap the tube to a J321. R60 on mine is 2meg ohm 422v before the resistor and 352v after. Thanks for the great videos.
I have been in contact with the company, my campaign of pressure on them appears to have worked and they are now only shipping with the J321 if you buy from their official AliExpress store.
bought a june 2024 one, tube reads j321by xrhh 2024 ii
How to I verify the accuracy of my counter?
Hopefully their next version uses standard batteries. I bought it, but I'm super uncomfortable with the unbranded lithium ion battery. And in a real emergency, these will be useless if power grid goes down.
I really get your point on the replaceable, off-the-shelf batteries. I have recently been interacting with the so-called 'prepper' community and for sure using standard primary cells is a better match for that application. I was doing some research for a video I will be making, about a device that has been aimed at that community, which turns out to be complete snake-oil, but I did learn a healthy respect for this community on the most part, well at least the majority of them, ie those that are able to keep politics out of a discussion about radiation detectors...
If and when it happens, politics will be irrelevant. Silly people. BTW very happy with this model's performance (minus the battery), appreciate the video!
Unfortunately they don't ship it with the j321 anymore, they replaced it with some smaller shitty tube (no markings but it appears to be the j613/614), it's a shame another cheap product has gone to shit
This is unfortunately what a lot of chinese manufacturers do.
Is that correct info? You received new version with that crappy tube?
I was hopping to order it in nearby future, what a disappoinment 😢
I have the same problem can the tube be replaced
@@markhart6743 Yeah you just have to desolder it out and stick in a new one, a j321 costs around 20$
This is false. I just got mine and it has the correct j321 tube. There was a mix up somewhere in manufacturing and some were made with a tiny tube that has like shrink plastic around it. If you contact them about this thy will get it resolved.
@project 326 Hi thanks for the immensely informative videos you create they are invaluable and entertaining. May I ask what your choice would be for an enthusiastic noobie to this field. The fs5000, NR850 or GQ GMC800 OR indeed anything better within the constraints of cost sub £150. Thank you so much.
Of those devices, I have only tested the FS-5000, so its hard to say. In the sub $50 class, this one really does it for me. Basically since I found this, I have moved away from buy and reviewing cheap counters...
@@project-326 that’s fair to say. Thank you. I ordered both the fs5000 and an NR850. The quality on the NR850 is quite lacking with a J321 tube soldered directly to wire and held, almost, by sticky a pad which will fail. AA batteries are good and results from both machines are comparable. Thanks again.
Hmmmm guess this is the one I'll actually buy.
As the communication appears to be serial I'll try to add a simple serial-over-bluetooth to the device and try do simple protocol decoding on Android for the lack of features you mentioned.
Hacking the serial is ALWAYS a good idea.
Please share your results once you figure it out!
@@project-326 Hello there!
So my super fast forwarder finally delivered the item.
Before jumping to hacking serial I got some common sense sanity to do.
My unit measured about 0.14uSv/h in the office and tube voltage measured 325V.
Unfortunately I don't have any uranium laying around so do I need to mess with the HV PSU?
How does this compare to the GMC-320 Plus? Awesome content, keep it coming!
Привет автор канала, вышла новая кастомная прошивка на этот прибор, будет ли видео по этому поводу?
from the manufacturer or 3rd party?
@@project-326 github - rad pro
@@project-326 guthub
@@project-326 Hello, I managed to flash my Bosean fs5000)).It became very fast, although it began to show a lower dose of activity, but I think it just needs calibration.
@@georgiy0077 How is the display? I must admit I found the GISSIO UI a little 'boring'. There is a calibration factor that can be changed in menu and also in the PC application. With the new firmware, does the device still work with the PC application?
Hey, it´s me again, the guy with the FS 5000 with a short tube. Meanwhile Bosean replaced it with a new device production date 07/24 and with a J321 tube inside. Me happy now. 😁
Question: measuring some 0.30 micro Sievert on top of a sample with the back plate attached. Without back plate and with the tube therefore touching the sample up to 0.9 micro Sievert. Normal? Is that due to some millimeters more distance or is it the back plate itself? And which one is the "correct" value? 🤔
actually both are correct.
Sometimes it can be helpful to think of radiation like a light bulb. The further away you are, the lower the measured brightness will be. This is where the famous inverse-square-law comes into play. Please take a look at the wikipedia entry on that relationship.
I hope that helps!
Notes for your unit, software upgradable for future upgrade, open source software to allow it to develop.
Very nice 😁 Next review maybe GQ GMC 600 Plus? 😁
Maybe the 500+ because of its duel tubes
Yes. The 600 has many strong points, but it's screen is not one of them. It would be great to see a tear down and any suggestions to improve it.
I just ordered one of these and upon your head be it. 😉
Thanks for making this video, you helped me choose the right cheap Geiger counter to buy. Got my Bosean clicking away right next to me at the moment.
Great to hear!
Fantástico.
Well, it's 68$ now... :D Will wait a little and hope it goes back to~50
Thanks for the great review. For this price, I don't think there is a better one on the market. I've been using it for a few months now and you confirm my opinion.
The brass inserts really impress me on a chinese counter.
This kind of quality decision is getting more common on products here. Check out the Measall range of gamma ray spectrometers I reviewed.
13:05 Crazy and high integrated board.
First
Just finished the video, and I'm amazed like it's cheaper and better than most geiger counters 😮
If I wasn't saving up for a kc761 and new sources I could get my self a unicorn in a heartbeat
Thank you for the video. I really enjoy watching your review videos. So far, I had the GC-01(J321) and XR1 Pro(M4011). I may get this FS-5000 as well(thanks to your reviews). Have replaced a big buzzer in size to get a louder clicking sound(with the 100nF cap shown in your other video).
Just got my new Bosean FS-5000 which cost around USD55(best price). But it comes with a J613 tube instead of a J321 tube. Is much better to go straight for a better one like Radiacode 103...
I bought it based on this video because I had another one, also in the picture, that was really not good. Thank you very much
Glad I could help
Thank you very much, I really enjoyed your style, and found the information very detailed and thorough! I just placed an order, looking forward to testing this out, now that I'm armed with so much useful information about the device!
Have fun!
@@project-326 Thanks!
Great review! Thank you for the links. I think I will purchase this item as my first Geiger Counter but may eventually get a Radiacode or a Radsys unit for carrying with me on hikes/shopping.
Thanks again for the great channel!
I order on Aliexpress official Bosean store: they send me FS-5000 model with wrong tube, probably J313/314. They finally refund me half the price of my order.
They said that there was a mistake in their warehouse and that in future, all FS-5000 models will come only with J321 tube.
How important is it to detect alpha radiation? And how important is it from a purely safety perspective to know the type of radiation you are detecting or is Sieverts truly giving you the intensity of ionizing energy that can harm me or my cat?
I'm so torn between the Radiacode 102 and the FS-5000. I'm just a low level enthusiast and can't imagine I would need to identify isotope in the middle U.S. with the exception of wandering around or near a decommissioned nuclear power plant in my area. Yes, I did just purchase a $200 vacuum pump so I could expose some friends kids to deflating marshmallows and keeping my nuts (pistachio and cashew) from losing their snap... Any insight and/or advice would be appreciated.
I do love your videos which includes enough explanation and demonstration so I know you aren't a wanker. I've subscribed and look forward to more.
All all depends on how much you want to spend. Personally, I would go for a reasonable quality low cost device. Alpha is pretty hard to detect anyway, for example it won't get through more than 30mm of air (take a look at my Alpha spectrometer video) and devices that are capable of measuring Alpha are usually an order of magnitude higher in price.
I found that the FS-5K was actually better at measuring the secondary cosmic rays when on an airplane than the RC102 (most of that radiation is in the form of betas).
Summary: Start cheap and work up if you find an interest in the subject. Sometimes I can be a dick but seldom a wanker...
@@project-326 Thanks.
How important is it to know the energy level of gamma radiation with respect to sieverts? Again, I'm dabbling and am currently residing in low rent housing of the Belle curve. But, if I am understanding kev, gamma from Am241 is a lot more tame than Cs137 or whatever else that might be hotter. I will prob end up getting the FS-5000 and in short order wish I had both...
Btw, Hans Geiger was a jerk. When Hans Bethe lost his position in 1933(35?) Geiger was unsympathetic and could have helped. I'm not shit stirring, I'm reading a book on the making of the atomic bomb and assumed brilliant minds where noble as well. I have no idea if Hans Geiger was a malcontent, but that bit between the two stuck in my mind.
you can install rad pro on these now, makes it probably the best amateur geiger counter out there
I knew that Gissio was working on this, but thanks for letting me know that its ready now. I can't wait to see the results!
How do you do the install and why is it worth having? I've just ordered the FS 5000 ($99NZ).
@@alastairbrickell8813 My personal opinion here:
The RadPro software is really good BUT - it doesn't work with the Bosean PC application and having the ability to offload data is one of the best features of this product (take a look at my beta back-scattering experiment video I did using the FS5000). I know that there is a way to do that in RadPro with command line scripts, etc, but frankly the convenience of an app keeps be from changing to the RadPro on this device.
For crappy counters like the FNIRSI GC-01, for sure, the RadPro is a great upgrade, there isn't any useful features to lose...
Is this really your voice, @project-326 , or an AI tool?
As others have commented, it's very robotic. Having seen most of your videos, I'm rather used to it by now however I'm genuinely curious.
It a TTS tool. I like in Mainland China, so a little anonymity is helpful.
Glad you enjoyed the videos!
@@project-326 I think the AI voice is perfect.
I like that it has instant and average readout. My only "modern" meter is a GMC 320 Plus and it only shows average but it takes ages before it reaches the correct level. My older meters all have instant readout only.
Just for you, I posted the results of the quick test I made in the community section of the channel.
Thank you! @@project-326
GMC-320 Plus - Overranges to, And Shows 000000000......
Very well done! I might just buy a _Bosean FS-5000,_ but more for searching, finding, and detecting sources, rather than more precise measurements. I do use the _SEI Inspector USB_ (v 2.13) G-M counter, and it's an excellent device, despite being discontinued, with the newer _SEI Ranger._ These both use the LND 7317 "pancake" G-M tube, so they can detect alpha (> 2 MeV), beta (> 50 keV), and gamma (> 8 keV) through the mica window. They also have a scaler/timer function and built-in isotope efficiencies-which the values for can be changed, so you can measure isotopes in DPM and Bq. By the way, what are your thoughts on the _SEI Inspector USB_ and _SEI Ranger_ G-M counters? If you do know, please give your honest opinions, as I'm curious to know. I think they're great units! Thank you!
Hi and thanks for the interesting comment. Sadly, I have zero experience with SEI devices, so cannot comment.
No problem! Thank you anyways! I enjoy your videos! It's great to find a channel on someone who is knowledgeable in said subject! Unfortunately, A lot of others don't know what they're doing!
@@KarbineKyle Life is a learning experience, and I'm still working on being an expert at anything...
@Studio326 ...it doesn't do Alpha ... (for example radon) ... so that's a no-good for me ;)
Yes, that is absolutely true but... even the cheapest alpha capable tubes cost more than the total cost of this product, and alpha particles have a range of just a few cm in air, most GM tubes that are capable of detecting some alpha, lose energy across the mica window so the actual detection range is usually less than 2cm.
One effective way to detect Rn-222 is to use a gamma ray spectrometer and look for gamma peaks that correspond to the Uranium decay chain. Sadly, this kind of kit costs a lot more, please see my reviews of the Radiacode 102 and Measall KC761 for some background.
Perhaps the sensitivity is related to the exposure of the GM tube. Rather than sealing the holes, perhaps some type of sliding door can be implemented, so that the device can be protected in tough environments, and then opened when more sensitivity is required. For software, I suggest the manufacturer lets the enthusiast community write their own software, but either making their software's source code available or by providing details about the raw data coming from the device. I could probably discover this by means of a USB tap device, but it would be better to just have it presented.
I agree with you, it would be great it they produced an open platform. I guess there is a compromise between commercial prudence and user engagement to be found. I think that Gissio is looking into the FS-5K right now...
Is its FirmWare upgradeable?
The RadPro guy has FW for this device, so it seems so.
Can anyone please check something with their FS-5000?
The J321 tube has a conversion factor of 153.8
This means to get uSv/h you divide the CPM by 153.8 and you get uSv/h
On background radiation level, this seems correct: If I get 20 CPM, the FS-5000 shows 0.13 uSv/h (20/153.8=0.13).
But at higher readings, the FS-5000 shows uSv/h that's way above what it should be: 350 CPM translates to 3.94 uSv/h. As I see it, this should be 350/153.8= 2.28 uSv/h. My other meters (a GMC-320+ and a Soviet RKS 20.03) confirm this by reading close to 2.28 uSv/h.
So, is something wrong with my meter or is there something wrong in software? The fact that my other 2 meters are showing way lower uSv/h make me think there's something wrong with the FS-5000
do your other instruments have any sensitivity to beta radiation?
@@project-326 Yes, they both do.
But why would it matter? The hardware of a geiger counter can only do 1 thing: register counts. It's up to the software to translate this to uSv/h. And if my GMC-320 and FS-5000 are showing the same CPM then they should also display the same uSv/h. I'm trying to figure out why the FS-5000 is converting CPM to uSv/h with the 153.8 factor at background level radiation, but starts displaying considerably higher numbers at higher radiation levels. Perhaps it's multi point calibrated (we don't know) but this would mean the J321 tube is very non-linear. But even then, why do the GMC and RKS translate the same CPM to much lower uSv/h levels?
@@Ni5ei I understand the confusion now, I apologize for not understanding this question clearly before. With a J321 tube, like any GM counter detects counts but not equally in the energy bands. All GM tubes have different sensitivities at different energy levels. Try to think of this in terms of statistics, if tube A has a detection probability of X at, say, 100 KeV and tube B has a detection probability of Y at the same energy level, then neither cps or converted Sv/h will be the same. For broad energy sources, such as background, tubes can be calibrated to read the same, but that doesn't mean that at any specific energies (say a Cs-137 source) will read the same.
This is one of the reasons why an energy compensated gamma ray spectrometer is always better (but it will miss other radiation sources). Sadly, there isn't any detector that can measure all of the predominant decay modes and come up with a definitive answer. Essentially, you need to know what type of radiation you are measuring and at what energy level, then find a detector that is specific to that application to be able to get a good result.
All detectors are a compromise...
I do hope that helps, but please feel free to ask about anything you are unsure of, if I can, I will try to answer.
@@project-326 Thanks for the extensive explanation. I appreciate it.
Still, I really would like to see some CPM and uSv/h readings from other FS-5000 users to see if they match. I've been trying to get these for quite some time now but can't find people who own one. I've tried Reddit but didn't get any sensible responses there so that's why I've posted it here.
All I need is a few x CPM = y uSv/h results to see what other FS-5000 counters are doing.
And if it's indeed using different CPM to uSv/h factors depending on the scale of counts, this would also be the reason the FS-5000 is showing completely different readings when you install RAD Pro on it. Because RAD Pro only uses a single 153.8 translation factor.
Here's a result of measurements I've made: same source, same hardware, using stock firmware and RAD Pro:
FS-5000 stock firmware: 87 CPM = 0.75 uSv/h
FS-5000 RAD Pro firmware: 85 CPM = 0.55 uSv/h
Stock firmware displays uSv/h almost 40% higher than RAD Pro on the same hardware.
I'm pretty happy with mine.
One thing I wish they'd done is make the second display style (you can choose between "Concise style" and "Compact style") would simply be accessible as an extra page on the main display. As it is now, the up/down buttons let you choose between Sv, Counts and Graph. It would have been very simple to add a fourth page where you get the "Compact style" view, displaying real time Sv, average Sv, counts p/s, counts p/m and total dose all at once. It takes quite a few button presses to change this in the menu and could be so much simpler.
Flashed my FS5000 with the Radpro firmware today and monitored it with the Geigerlog software. Impressive, both. The original firmware is automatically backed up and can be restored just as easily. Radpro allows tube selection and deadtime & background count setting. The interval between log entries is configurable. Lots more, like a true random number generator. There is even a chess game lol.
how is the original firmware backed up?
@@project-326 the flash utility backs it up into the backup folder as a bin file. You can flash it back with the same utility.
I've tried it too. While I like a few things in the RAD Pro firmware, you also lose several features. I've gone back to the stock firmware.
@@Ni5ei What did you lose? I like the ability to fine-tune the counting algorithms, tube selection, dead time, background count and most of all the ability to communicate with Geigerlog. I miss the display and graph colours though.
@@42phaedrus Not just the display colours, but also the amount of different values you can see on the display without having to press any buttons. The device has a very nice display and this all goes to waste.
Update: I was wrong, it does still come with the J321 tube.
With the change to using a shitty tube what’s the possibility of modifying it to take a much nicer tube like a pancake.
I think that it will be a question of what the tube voltage is in the FS-5000 verses the requirement for a pancake tube...
no longer $48, is $168 on amazon
Try the official Bosean AliEpress store... They do not sell directly on Amazon so those are resellers marking up the product.
I agree, it would be even nicer to be able to change the unit to mRem.. that is a nice and toasty source you've got there my friend! Great review and for $48 It's pretty difficult to beat! I hope people get on board and the company can do some of your suggested upgrade !
I just sent them an email with the video details, I will let everyone know if I get anything back from them...
@@szabuowski8677 sure. It's just the force of habit.
very good review
Thanks!
I had the HFS-10, but it was pretty bad. I've been eyeing this Geiger counter for a while now, but there were no videos I wanted to know what tube it had. Thanks for this video, I just bought one.
I wish the screen was sealed to prevent dust ingress from the openings in the case.
on my one, I just added a layer of Kapton tape over the openings.
Great video! I've actually been sort of looking for a Geiger counter, but since I don't do anything with radiation or ever expect to encounter any, I don't want to spend much. But there's no point buying a cheap detector if it doesn't work!
I like the suggestions, especially the Bluetooth one - while the biggest wins there are geolocation and storage capacity on a linked mobile, it would also allow the use of noise-cancelling headphones in place of the piezo sounder for the particle clicks.
👍
Does anyone have any experience with the GQ GMC-800 device. It looks impressive but I don't know how it fares with accuracy. They also contain the J321 tubes but do not have slots cut in body to expose the tube. I would think that would reduce the effectivness?
Thank you for your review i think i my purchase one of these after buy the Total Piece of Shite called the GC-01 from amazon. I only need a basic unit to detect and protect me whilst exploring.
Please keep up the grat work.
I bought one of these-for approximately the same price, thanks to your excellent reviews! I'm going to test it with many of my sources and radioisotopes! I really like and agree with your suggestions-for improving it! I think it should come with a protective silicone or rubber boot or case with a transparent window-for reading the TFT screen, which would make the device even more resistant to shock, moisture, dust, and water. A reset button/feature (for zeroing the counts), and a fast and slow response for the counting average would be nice, too. I don't expect it to be perfect, but for the price and design-I find it very promising, which I hope the developers will improve upon in the future, thus releasing upgraded models and designs. This will also be my first Chinese-made G-M counter-when it arrives! I'm excited to find out what this low-cost unicorn is capable of! There's also a Rad Pro firmware upgrade available too, which hopefully improves its performance even greater than before! Thank you very much! I really appreciate it! Cheers from the USA, and have a nice day!
Thank you for the awesome feedback!
For sure we should not expect miracles for this kind of price, but it's nice to see that it a rugged product and does what it says.
Not sure if Bosean will make another one, their main business is with gas detectors and they have a very good reputation in that market. I think that the volumes that they ship of their GM counter products is kind of small compared to the other product lines. Shame really, they are a good company with products that are quality-but-at-a-price ethos.
I'm pretty loathed to install RadPro, I wasn't able to get the free PC app to run, so I am very reluctant to lose PC data collection capabilities.
The silicone bumper idea sounds like a nice idea, but to be fair the product is made from GRP and not just the standard PC-ABS mix that most other products use. My kids always take this device if they are going on school trips. If cheap enough to replace if they lose it but good enough to give results to show to their teacher. On a recent school trip that involved a local flight, my eldest son scared the pants off the teacher when he said "Teacher, look 30x radiation and rising".
Sure thing! You're videos are quality and thorough, which is always great to see! A lot of others' videos lack that. My Bosean FS-5000 G-M counter arrived today! Thank you very much! For a cheap G-M counter, it really is quite nice! It has a very simple UI and a nice TFT screen! It also has very good sensitivity, since it came with the J321 G-M tube, and not with the J613 G-M tube, which some of these have or had, which I think was due to a manufacturing error. I think Bosean should develop and improve more of these G-M counters. I think if they're truly determined to do so, they could make some really nice G-M counters and improve older units. Sooner or later, when I'm not too busy, I'll do some measuring and post a list-style comment on the actual activities from various radioisotopes and sources I have, and their detected activities in CPM and μSv/h-from the Bosean FS-5000. By the way, that story about the 30X background scaring the teacher cracked me up! That's cosmic radiation for ya! It's a natural, yet very interesting phenomenon! Cheers from the USA and have a wonderful day!
I read somewhere that some units come equipped with the dreaded horrid J613 Geiger-Muller tube, just like the newer FNIRSI GC-01. I've just bought an FS-5000 from the AliExpress official Bosean store linked below (48.06€). It is scheduled to be home in a few days. I'll open it up and see whether I'm lucky or not and report here.
Just received the Bosean FS-5000 and yes, the GM tube is indeed a J321, the same as in this video 😎
Mine too, J321 2024
Unit is manufactured in 02-2024
@@pisotones2348
Does anyone knows how calibration is done on this device?
That seems a nice product for a hobbyist.
Showing measurement Data in Microsievert per hour is quite hyperbolic. The presentation in These values IS strongly model dependent and depends one a lot of assumptions. Errors of a factor of 2 or even more IS highly likely. Therefore I understand that you might never get a calibration certificate from the manufacturer. (Sorry for the typos, my Germany autocorrection IS a pain)
No problem with the English, I'm British so mine can be pretty terrible at times too.
Thank you for the feedback. Yes you are absolutely correct about the counts to sV/h calibration. Clearly, this tube, and all of the tubes in cheap counters have horrible peaks in the sensitivity curve across energy levels. And that is just for gamma, for betas, the situation is actually worse. Typically I allow around the kind of tolerance you mention for these kind of measurements. Mostly I am interested in the ratio between measurements for each of my sources, which I know quite well. For my strong point source, the Sr-90 check source, I'm just trying to find out if the counter will saturate before the tube does (many of them do).
To have any kind of serious measurement, a lot of money needs to be spent - what this video, and my other counter reviews is attempting to do, is to help those people that either don't want to spend hundreds, or even thousands but still want something that will be reasonably useful in general applications.
It kind of also about learning. So many times I see in the comments that a viewer has bought something like this FS-5000 and now wants to learn more and will ask a lot of questions. That alone makes it worthwhile, there is so much disinformation out there with regards to nuclear physics. Every one person that can pull out a counter and check something that they are told, is worth 100 people that just accept that everything 'radioactive' is bad.
I have gotten board counting the number of people that still think gamma ray irradiation of food is making our food radioactive.
@@project-326 Even your spouse can be a radiation risk (40K).
To Dubois, PA, the Aliexpress price is $83, and the Amazon price is $60, both freeship(cheap and fun in my opinion). Thanks for the video "Jim" I have been following you for a while now and enjoy the content.😊
For me it was 42
here is the link to the Aliexpress Bosean official store:
www.aliexpress.com/item/1005005307226616.html?spm=a2g0o.productlist.main.5.1325c7483xPI9A&algo_pvid=66ee5bb6-0c9d-470c-98fd-a2bf893f2495&algo_exp_id=66ee5bb6-0c9d-470c-98fd-a2bf893f2495-2&pdp_npi=4%40dis%21USD%2168.68%2141.21%21%21%2168.68%2141.21%21%4021059dbe17108127581582196e9627%2112000032570843125%21sea%21HK%212881401294%21AB&curPageLogUid=YeUAKbn0coue&utparam-url=scene%3Asearch%7Cquery_from%3A
At first glance, it is a good device, but there is no statistical information at all about the measured values. For example, statistical error.
not yet... 🙂
great device for the price, as a review, but competition from the US that counters are several times the price is not sleeping, they decided to drop cylindric tube based counters! :-)
which US designed devices are you referring to? Do you have some examples? Just trying to better understand your meaning.
Thanks!
@@project-326 the chck.
@@project-326 the most affordable pancake tube GM, that with some extra equipment and duties was 800 US$, Inspector from s.e.international. Their swiss distributor for EU sold it under the double price. So their site shows they do no more offer cylindric GM counters, but just added an energy compensated pancake tube. However their cylinder tube model is available rebranded as medcom rad100 at 475 US$. It should be added about 20% duties for import to EU.
Adorei o review, na minha opinião ainda acho melhor o uso de pilhas AA ou AAA ao invés de baterias..
I see your fs 5000 have a 003 sensor, while mine have a 001 sensor. I don"t know what that means.
curious, where did you see that in the video?
@@project-326 you see that in the pic of the pc screen when you show the software. On top of the screen.
@@Oywind OK, I'll take a look. I know that they have changed back and forth between the J321 and other cheaper tubes at various times.
@@project-326 I also received mine today, it has the J321 tube and the sensor is also 003. I might add the build date is June 2024 for my unit
@@project-326 Do you think it's possible to order a j32i tube and replace it with the smaller tube that came with my fs 5000?
I already have a NUKEALERT keychain detector, which is sold by KI4U in TEXAS. It is always on and has a battery life of at least 10 years. I just ordered this BOSEAN detector as a backup and I plan to keep this Bosean permanetly hooked up to USB power source, so it is always on. I think it would be nice to have 2 detectors running all the time, just to ensure if 1 of them starts detecting radiation, the other unit should also detect it...and if not, it reveal that maybe the 1 detector that is alarming is malfunctioning.
Nice review
Very nice review.
What about a comparison with the NR-750 ?
I might look at the NR-750 at some point, but for the next few videos I want to focus on experiments using the equipment that I have already accumulated.
There is an interesting indie design model KB6011(2024) with a J305 tube plus a PIN diode as sensor on Taobao. I'm curious how the sensors work together. I've been using their old model KB4011 from 2021 and it's already the fastest in terms of response time among my other devices. I see that the tube is covered with metal foil, probably for energy compensation, but I don't have a proper source to test it. I'd appreciate it if you could review it sometime.😉
I would have normally expected this to be able to add 'alpha detection' capabilities to the specification. In this case, I have no idea, alpha isn't included in the spec and its covered in the plastic case anyway.
I guess I just looked at the same TaoBao advert as you, that has a a J321 & J305 tube wrapped in copper foil and kapton tape, which they seem to claim gives a 20% to 30% increase in sensitivity, which is clearly BS.
Frankly, if I buy any more counters, my wife will kill me.
PIN diodes aren't any where near as sensitive to gamma as a J305 GM tube, perhaps it is used to extend the lower energy boundary for betas or x-rays...?
Maybe they realized that Measall made a name for including the PIN diode in their products and its just a marketing gimmik...
@@project-326 Thank you so much for taking the time to provide a thorough explanation of this issue, which resolved my confusion about the PIN diode. I also read some literature and found that the PIN diode has a detection rate of less than 0.5% for relatively higher energy gamma rays, so it's really hard to justify the claim that it improves sensitivity.
@@project-326 Hope things are going well! A small update on using a PIN diode as a radiation sensor. Out of curiosity, I tried an open source project, stefanoaz/Particle-counter-V2 from Github (UA-cam seems not to let me attach links directly) and it worked.
The idea is simple, shield PIN diodes from light using grounded copper foil and amplify the pulse signal from radiation particles dumping energy into the diode. Using an oscilloscope I got 1-3 CPM from the background and 50-60 CPM from a thorium lantern mantle.
The sensitivity was not impressive, but it was still exciting to be able to detect radiation without the presence of a Geiger-Miller tube (and high operating voltage).☺
Where do I find the pc application?
right here:
www.bosean.net/wp-content/uploads/2024/03/Personal-Radiation-Dose-Management-System.zip
There are two versions of the SW in the zip file, try the first one, if you can't get it to connect try the second version.
@@project-326Nice, but the program doesent work.
@@project-326 Little struggle, now it works fine :)
Please review the KB6011!! I believe it is the best one for hobbyists. If this one had the response time of the KB6011 it would be absolutely perfect.
This is on sale one aliexpress for 49% off for a few days for a total price if $35 lol. Buying one right now
Have you been successful with the 49% off? I couldn't get the price adjustment.
Yeh I got the fs5000. Took like a week
@@jtcustomknives Wow, for $35?! From which seller?
Looks like a good unit and features for the price. Definitely does NOT need EMF circuitry which is mostly for the ghost detecting goofball crowd anyway.
This unit is currently $41 on aliexpress . Im wondering if they marked down the price, due to them having a upgraded model to be sold sometime soon ? For $41 shipped, this seems like the best deal out there, for a decent unit .
This looks nice, in a basic but does the job kind of way. Thank you for taking the time to make these videos, I find them informative and enjoy your sense of humour.
Now I have to decide what to do, I almost brought a radiacode 102 on eBay today but got outbid in the last few seconds (it went for £160). The choice is either wait for another 102 to pop up or get something cheap and simple like this. Obviously I could spend a bit more on a new 102 but then I will probably get raped by customs and charged import duty plus a pointless handling fee.
Do you go scrumping often? Im always looking for new samples to buy.
I have a fairly hot sample from the 70s used by the ARC. I also have a Bicron Analyst with a pancake probe, as well as a newer digital meter.
Im trying to get my hands on some DU 30mm rounds my vet buddy brought back from Iraq.
We have been a couple of times, there are 2 videos about those visits on this channel, if you are interested...
Wow - access to DU, something I would never get here. It would make for a great sample that can be dated via the ratio of the iostopes using a simple gamma ray spectrometer like the Radiacode or KC761...
I wonder how the device itself communicates as far as what it communicates exactly over serial is. Might not be too hard to write a custom interface library.
I've been curious about getting a Geiger counter, I may pick one up.
The reason I made this video, was exactly for people like yourself. Each time I review one of my counters, I always get asked, "What is the best cheap one?", hopefully I have finally answered that question!
The next thing you will want, is sources to test your new counter. Then you will probably start to ask some interesting questions and want to perform some experiments that you can do yourself. Before you know it, you have a new hobby.
Have fun!
Ordered mine today. THANK YOU for your video! Maybe 1 con point for me is that its not using AA battery. Have a nice day. Greetings from Gemany ♡
I agree, using off the shelf primary cells has some advantages.
Hello, sir. Please, I'm looking for an affordable Geiger counter that can detect multiple types of radiation, including alpha particles. Do you have any recommendations?
May I first ask a question, what do you see as the main reason for wanting to detect alpha particles?
@@project-326 Yes, sir. I would like to detect radon and thorium radiation. Just to be super safe around an old house that I recently bought.
@@rafaellavratti The best thing to get it that case is a gamma ray spectrometer, such as one of the Radiacode devices. It can detect the presence of those isotopes (Rn222 and Th232) by seeing what is happening in the decay chain. You are not going to be able to read above background looking at alpha from Th232 - the half-life of this isotope is longer than the current age of the universe. What you will be able to detect is the many associated gamma emissions that accompany alpha and beta decays in that decay chain. Rn222 is also difficult to detect directly as its half-life is less than 3 hours. Again, a gamma ray spectrometer will allow you to infer its presence due to the decay chain products.
Alpha detectors tend to be pretty expensive, you will certainly pay more for a reasonable one compared to a Radiacode product and the alpha detector will have a lot less general use cases.
Hope that helps...
@@project-326 Thank you so much for your response. I really appreciate it. If I may, I'd like to ask another question to take advantage of your expertise. Given that the Bosean FS-5000 is quite affordable, could it detect a hidden source of radiation in this old house that I bought, such as a piece of iron or steel that got contaminated, or any other object exposed to radiation? Do you think I would really need a GR spectrometer like the Radiacode, or would the FS-5000 suffice for this purpose? Thank you for your time and patience.
@@rafaellavratti Yes, the FS-5K is a very good detector, but you will need to balance the sensitivity that you need. GR spectro like the RC102/3 will be about 30 to 50 times more sensitive than the FS-5K. This translates to how long it takes to be able to get a background reading. The time needed is pro-rata as the sensitivity.
If I recall there was a project where everyone around the world had devices that reported in readings like Geiger counter etc. what would be great is a world wide network of people with a box that measures humidity , temp , light , wind , x-rays, cosmic rays , over time .
Thanks for the nice review! Since your power supply is up and running, have you tested the soft x-ray sensitivity for the BR-6 as well? Would love to know if it is able to detect soft x-rays too.
Yes I did, it responds pretty much the same as the FS-5000, which is in hindsight, unsurprising as it has the same tube...
@@project-326 Thanks, that was what I was hoping for. Is the J321 is the same tube as the M4011? I was worried that it would have a bad detection efficency and could only detect high energy x-rays as you mentioned is the BR-6 video. You seem to be the rainbow shitting unicorn when it comes to Geiger counter reviews. Love every video. Thanks again for sharing your valuable knowledge :-)
@@brigittenieen3942 The J321 and the M4011 do seem to be very similar in performance. Glad you enjoy my little channel, I'm just sharing what I learn as I go.
@@project-326 Interesting. Small channels like yours make the platform great. When sharing awesome things is the only motivation. Keep it up!
Algorithm can get f'd made me subscribe. :)
What Is your opinion Sir about cem DT-9501 geiger counter?? that detects a particles and has removable batteries also thanks in advance!!!
I have never tested that particular unit. I do own some other CEM instruments and my observation is that the UI for these device is very simple, a little too simple by today's standards.
@@project-326 thank tou very much Sir !!!! I have subscribed your fantastic channel if you ever make a video of it i whould be glad to see it !!!!
@@project-326 they sell this in Germany for 400€ in conrad store as VOLTCRAFT RM-400 Geiger counter thanks in advance!!!!
@@alxRo there are no fans here, just friends!
🙂
My NR-750 also has the J321 tube in it and Ive been teting it for the last 2 weeks. I put 2 AA eneloop batteries in it and left it on 24 hrs per day. It is still runn ing 2 weeks later with 50% charge left in the batteries. It looks like it will run for a full month on 2 AA batteries being left on so it can monitor radiation levels fulltime. Not bad for a $50 unit.
Impressive!
Bruh, why you gotta hate on weapons and stuff 93? I'm subscribed to your channel and will stay subbed, but don't make fun of him, he knows quite a bit about radiation! :)
Anyway, have a good day! :D
Yes, you are quite right, I shouldn't do it... I'm sure he has very good knowledge on quite a few topics, but perhaps the dangers of ionizing radiation is not one of them. I worry about his unnecessarily risky 'experiments', especially now that he has that x-ray source and seems to be busy imaging himself.
I do actually respect him as a person, I was impressed with his defense of LGBTQ subscribers when hate speech was involved. He gets 10 out of 10 marks for being a decent chap.
In my last video about the FNIRSI upgrade, I did a funny section about him and I actually wanted it to make him laugh too. There is absolutely no hate, its just a bit of fun.
After watching your review yesterday, I ordered one of these from Amazon, $60.
Can't find it on Amazon now for under $168/
Oh well, screw it, I'll continue to go without.
have a look on Aliexpress for the official Bosean store...
The same detector is a MOESAPU on Amazon and is still 60 dollars
You paid to much and might not get the real deal. The author put the Ali express link in the description.
Your reviews are great. Would this be suitable for test if food or water was contaminated with dangerous radiation? (say after a nuclear war)
Testing food/water is difficult for any detector. Anything that will be consumed needs to be checked very closely and usually requires a fairly long duration test, even with a big expensive detector.
Thank you very much, this will be my first geiger counter. I think i'll have fun with it. Nice to start with someting cheap but still functionnal.
I wanted to buy it today and contacted the seller for details as they did not have any description on the product. Sadly I got a reply that they replaced the sensor and do not recommend the purchase of the product now, which is quite strange and sad.
Perhaps you can share who you talked to, if you post it here then they will probably be fired!
@@project-326 Sure, I made a collage in Google Drive and made a reply with the link but not sure if you got it, as UA-cam hides them by default. Did you get it?
you can buy now, Their picture shows that it is J321 tube now
Great information, review, and overall content. Love your language and honest nature. The audio is a problem. The segue 'noises' and background 'music' was unpleasant and twice I was startled and almost stopped watching. Audio seems the simplest mistake and can cause a new channel to appear amateurish.
thanks for the feedback, I will pay more attention to that next time. It probably because I have reasonable monitor speakers and they don't represent the typical audio reproduction situation (ie smartphone, tablet, PC, etc)
Cheers!
Just got mine a few days ago and it works. I just wish the response time on it was as fast as my radiacode.
Thanks for the review.
Have you ever tested the Pudibei NR-950 geiger counter?
Is it any good?
Unfortunately not, but I hear pretty good things about it. I think it uses the same J321 tube as the FS-5000 does, so in terms of raw sensitivity, its going to be the same. So it kind of comes down to features of the firmware, etc...
Thanks, i apreciate.
I actually have both FS-5000 and NR-950, the NR-950 isn't as response as FS-5000 for low level sensitivity
Thanks, realy apreciate
@@project-326The NR-750 shown on Survival Lilly has an 4011 Geiger tube.
Where is the battery ?
attached to inside of rear cover of the product. I should have made a photo of it, but seem to have missed it!
@@project-326 tx. Showing battery is always important because of finding replacement sources before decision to buy. I prefer 18650 always if the device itself isnt bad.
@@SirWerner.. This is a flat rectangular Li-Po pouch cell. It fits in a "frame" of four low rails in the back cover. There are many Li-Po cells of a similar size and form factor on the market.
I think its impressive that this Bosean measures up to 5 rads.
I also wanted to buy one, but noticed a comment here saying they replaced the tube.
It seems to be true, I contacted them asking about the sensor and they responded : "Recently replaced with a new Geiger tube." Maybe it's worth investigating.
Really? When I got this one, just a over a month ago, I also asked the same question and was told that it used the J614. Perhaps the sales team are thinking of the lower cost models...
17:26 Near the START button: Sensor 003
After a disappointing experience with my suspect 'fake' GC-01, I've just bought one of these :) No I await delivery lol
I did the same.
If you bought it from their official store you are ok in a way because you will get refunded.
I didn't and now i try to contact the seller..
A new fiasco!
@@razor7799 wishing you good luck bud, ridiculous to think there are fake Geiger Counters out there!
These things happen and it is almost never due to 'fakes'. They are all made at the same factory and the retail customer has price/performance options when ordering the product. The FNIRSI brand themselves told be that they have changed the tube on three occasions as they constantly "strive" to reduce the cost. I have reports that Bosean has recently done the same thing to the FS-5000.
@@project-326 They have my friend, see my latest post above :( Hopefully fixable though.
The FS-5000 is a good detector (much better than the GC-01) and can detect the radioactivity of thorium coated electrodes very sensitively.
Yes, I noticed that too, I previously used some really low activity rods for a thorium measurement and the FS-5K gives a really stable measurement on those, in spite of the low activity.
Wow nice job , so
I own the GC01 should I buy this unit as an upgrade replacement?
Well, I never want to influence purchasing decisions. If you already own a basic Geiger, perhaps consider a gamma ray spectrometer, if you have an interest in this subject...
NR-750 opinions ? Was wondering if it is failry accurate and what geiger tube is in it. Ty
One day I will get around to testing the NR-750...
@@project-326 right now they are about $20 on aliexpress...very low priced.
@@project-326 Im gonna open up my NR-750 and see which tube it has...I think it is the M4011.
@@project-326 I would also be very interested in such a test!
I have been looking for an easy to use Geiger counter that I can hook up to the internet and stream the data. Anyone know of such a device?
I'm sure there must be industrial solutions that do that, though I imagine that they are going to be at the pricing levels that match their customers expectations, ie the IAEA (UN) and nuclear power plant operators...
I've reviewed things like torque wrenches and similar and they have a calibration certificate that has a serial number, but everything else like the test results are the same as ones other people reviewing got.
We get PU tubes with measured sizes if they are within tolerances.....they are ok but the numbers are all made up
IMHO, this guys channel is perfect...his info is clear, concise and he has a sense of humor.
just watched another video where they checked this meter against some other chep ones and more expensive ones... this Bosean was completely out with the readings... to avoid
@@copyandpastification can you give link to that video...id be upset if this bosean is completelty innaccurate.
@@davehimlin2374 hi thank you for replying to my comment i watched back that video ( ua-cam.com/video/wxuKvUHRmsY/v-deo.html ),, this lady is looking at different meters and is testing the fs600, I understand that you are testing the fs5000 which should be a great improvement from older models but if Bosean didn't calibrate that Geiger counter I have to assume that they don't calibrate them properly or at all... unfortunately I don't think I could trust Bosean products, however thank you for your video it's very well done
So the J321 tube, will be 1 microseveirt per 60 CPM on all geiger units which contain the J321.. or would other units that use J321 tube, have a different CPM to MICROSEVERT calculation based upon their software and if they used a different source, like CS137 ? Also, since they test it with CO60 and got 60 CPM= 1 microsevert , would that calculation be the same, when using this device to measure radiation in a nuke detonation event or nuclear power plant leak ?
OK, this is a complex subject. Different gamma energy emissions will result in a different statistical average for generating a count event in the tube.
So A Co-60 and a Cs-137 source that emits the same number of gamma photons (but at different energy levels) will have a different statistical chance of being detected. Co-60 has a higher energy photon emitted per decay than a Cs-137 decay.
Usually, tubes are calibrated for Cs-137 because the energy level of each gamma photon is close to the middle of the detection band that that tube can work with.
There are 2 ways to improve the situation:
(i) Use an energy compensated GM tube (expensive)
(ii) Buy a gamma ray spectrometer that compensates for the energy.
@@project-326 According to Radpro developers, the conversion factor for the J321, M4011 and SBM-20 is 153.8 versus 60 for J613. It is, as you said, pretty much a thumb-suck but imho on these cheap instruments the repeatability is more important so that the user can have a reliable indication of relative intensity.
Thanks, yes great! same results here.
Great stuff. I just bought this on amazon "MOESAPU Geiger Counter Nuclear Radiation Detector Nuclear Water Seafood Detection Radiation Dosimeter with LCD Display, Portable Handheld Beta β Gamma γ X-ray Rechargeable Radiation Monitor Meter" it looks identical to the Bosean ... Are they the same???
personally, I would only buy from their official store - Bosean has made a promise to only sell this device with the better J321 GM tube fitted!
I looked there, I think, and the price was 89 or something... I'll look again.
Great video, I was just about to purchase one until I got to your recommendations, and with my luck, the manufacturer will come out with an improved version not long after I buy mine.
I think I'll hold out and see if they do in fact come out with an improved version.
This is the story of my life, I bought the KC761 just before they released the 'B' version, the RC102, days before they reduced the price by $100, and so on.
I bought this Bosean product myself (I have only ever been given one product for free), I don't tell the vendors that I do reviews until I need some help with technical information or if I really hate the product, just after I release the product so I can count the thumb's down numbers. For example, I now know that the team behind the Gamma scout only has 8 people world-wide, working directly for them. I hate that thing...
Thanks!
Does the manual have a part in English?
If you buy the version intended for non-Chinese market, the manual in completely in English.