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How Capacitive Liquid Level Sensors Work: GILLSC.com
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- Опубліковано 29 тра 2013
- www.gillsc.com...
Video describing how capacitive liquid level sensors work.
This video illustrates the principles of Gill capacitive technology and the concepts of liquid level measurement.
For more information on our sensors and latest videos follow us on Twitter via @GillSensors, or like is at Facebook.com/gillsensors.
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For information and general enquiries please contact:
Gill Sensors & Controls
Unit 600 Ampress Par
Lymington, Hants, SO41 8LW
T: 44 (0)1590 613900
E: info@gillsc.com
www.gillsc.com
Your video is more than 10 times better then school book. Thanks!!!
Yo bro, how does ur life now look like after 10 years?
This video is very helpful for conceptual learning, and please add download option.
thank you so much for sharing this video. it helped me in my assignments
Thank you for this video, Im learning this for my exam. You are very helpful to me. I'm not really good in english and in spite of it I understood.
Now aking ?????
I would like to clear my doubt here, in this video you have mentioned. if we add the dielectric material in between electrode the electric field are increase how it is possible. can you tell me the details about the electric field increase.
Good question! You ready for this? Inserting a dielectric between the electrodes does not increase the electric field, it actually weakens it and that's why there is an increase in capacitance:
Here's how:
* Capacitance (C) is directly proportional to the charge (Q) stored on the plates and inversely proportional to the voltage (V) across the plates (C = Q/V).
* The voltage between the plates is related to the electric field (E) and the distance (d) between the plates by the equation V = E * d.
* By weakening the electric field (E) for the same amount of charge (Q), the dielectric effectively reduces the voltage (V) needed to maintain that charge.
* Since capacitance is inversely proportional to voltage, a decrease in voltage due to the dielectric leads to an increase in capacitance.
Another way to think of it:
Most dielectric materials are polarizable, meaning their internal charged particles (electrons and protons) can be slightly shifted by an external electric field.
* When a voltage is applied to the capacitor plates, the electric field influences the polarizable molecules in the dielectric.
* These molecules tend to align partially with the electric field, creating microscopic electric dipoles (tiny separations of positive and negative charges within the material, the micro-dipoles will have opposite polarity to the electric field because positive charges on the capacitor plates will tend to attract negative charges in the micro dipoles and viceversa).
* The net effect of these microscopic dipoles is an additional electric field that opposes the original field from the capacitor plates.
* This opposing field from the polarized dielectric weakens the overall electric field within the capacitor.
* As explained earlier, a weaker electric field for the same charge translates to a higher capacitance.
In essence, the dielectric acts like a helper, reducing the opposing force needed to store charge on the capacitor plates. This allows the capacitor to store more charge for the same voltage compared to a scenario with just air (dielectric constant of 1) as the separator.
@GillSensors Can you please tell me what software you used to create the presentation? I'm trying to create instructional videos about instrumentation and control systems.
) Liquid level is simulated by a number control, range from 0m to 10m
(2) Indicator is a round number indicator.
(3) Alarm including low and high situation with 2 Leds, threshold can be set by user. Light on when Liquid level exceed high threshold or low than low threshold, otherwise off. Answer please
Thank you for sharing. Please i have two questions . 1 .Can this be done with 12 volts dc battery? 2. How is it possible to convert the measurment in the indicator.
Good video to understand. Working of level sensor.
Which software is used to make the video
excellent
You just nailed it for me.
Hi Mike. Thanks for the review!
I'd like to add to the answer you gave regarding the RO or Zero water question. The manufacturer's response was right on. I have the BDC600XL. I thought I would try Zero water to see how the taste of my coffee would change. Once I did, I noticed that the electronic water level stopped working. The float would rise to the full reservoir position but the electronic level on the display never came up to full. I also noticed that I was getting inconsistent amounts of coffee in the carafe. I thought the sensor in the reservoir gave out and I was stuck with a $250 hunk of stainless steel. Not so! It turns out that the water level sensor needs the minerals in the water to work (as the manufacturer stated) - the minerals that the Zero water filter was removing! Once I switched back to regular tap water (which the manual recommends), all was fine. I'm guessing the machine uses a sensor similar to this: ua-cam.com/video/0du-QU1Q0T4/v-deo.html.
+GillSensors kindly tell me that how can we find the water level using capacitive type level tranmitter while water is not dielectric, it's a conductive solution.
is this sensor able to detect the level of fluids with both highly dielectric and low in dielectricity
u people must provide these kind of sensors as per vehicle models of India start with bus and truck
this one is applicable to aircraft fuel quantity measurement??
nice video. Can the same used for Diesel Generator fuel level sensing because the DG tank capacity and size varies across the models. Any suggestions for the varying length of the capacitor tube adjusting for the size of the tanks.
can we use this for Boiler Drum level measurement?
How do you compensate for temperature?
Thanks for this video , but I have a question , how would the car still giving a correct and fix reading of fuel level even if the car going uphill or downhill and the fuel moves in the tank?
thanks
Gill Sensors & Controls
Thank you for quick reply
Now I know why in my Peugeot 405 the fuel level gauge goes up and down while moving downhills and uphills respectively, the fuel level sensor located in the front of the tank
Thank you very much 😊...
Hi Great video. Can this be used to check water level in boilers? if this is not suitable which one would you suggest? thanks
THANKS very veryy veeeeerrrrrryyy much!! Respect!
Nice demo
Permit to download this video.
Thanks
it can act as a spark for flammable material? is i am not wrong??
good video, but when you go to the website and you want know what the cost is, you have to email a question to get a quote. No good if you can't show the price I guess I can't afford one!
Is this used in automotive liquid sensing instrument?
Thanks..!!
Nice video to understand fundamentals of level sensing.
really but i cant
very helpful video thank you very much
How is it possible that when you put two electrodes in water the short circuit doesnt happen?
will engine still start without oil level sensor ?
Thanks for sharing information....
in India I think no vehicle manufacturers provide these type of sensors , presently we bought a TATA AGCL Schools Bus ,
in which fuel Indicator is not working since day 1 first we thought it might be cos of low fuel ,
when we asked to Company Service , they said it's broken we can't replace , when we have given 85000 as a premium membership for service
you say it measures energy to determine level of liquid is that through a ammeter or voltmeter confused here
No, just about closing the circuit with a minimal volt/amp to acertain its closing.
this technology is using to measure level in tank of car !! but , can it work with steam ??
***** thank you to answer me !! in our plant we use differential pressure technology to calculate level !!
***** is there any concerns when dealing with boiling water? I know the dielectric constant is likely to change due to density variation, and the wires connecting the circuit board must be thermally insulated; is there anything else I should be concerned with?
please!give me few something about sensor at the end of video
good explanation. thank u.
how resistance probe level sensor work??
can you measure the level of liquid nitrogen using this technology??
You can measure nitrogen liquid with a capacitance probe; nitrogen cannot conduct electricity because it has no free ions to carry the charge and it is not combustible which would make it suitable for this application.
Cau we used this for non-conducting liquids....??
You can only use it with non-conducting liquid.
Thank you for the video. However, isn't it incorrect to show the frequency change as the liquid level changes? A change in capacitance changes the current in the circuit, not the frequency). The narration seems to confirm this but the animation shows frequency changes.
I think so. There is no association between capacitance change and frequency change.
%%now not hood mind ok
Can the "capacitor" have only one blade instead of two blades?
Mohamed Fahmy no , it should have two
Hamad Almutawa if you use the tank itself as the other part of the capacitor.
supersupersuper good!!
its is very tough
Superb !
This questions really sound like homework assignment questions...
just thanks a lot
Is this how my Audi determine my oil level?
Rizwan Sagir khan
Sachin ladakya farale Roll no -11
Rahul nilesh more
Roll no 24
*spits out coffee*
Dielectric whatctuation??? 2:58
Any student pilots here?