most proximity probe measure slightly less than 1volt or 10mil. and to get middle range gap voltage have to subtract 1volt. Sir, appreciate explain this. what will happen if not doing so.
Bently recommends gapping 3300 5/8mm at .050" (-9VDC), which is the center of the linear range of the device. If you used 10V instead, it would still work for most applications.
So there is no straightforward method to simulate 5 mils peak to peak vibration in that massive instrument, rather than going through making engravings?
Point taken, the machine seems antiquated because it is. One could generate the sine wave using a signal generator, but that would only test the computer's ability to measure voltage and frequency. The TK3 tests the entire system, including the computer.
@@karoly365 I have a newer TK3 and it is very similar to the one in the video. The set up is the same. You may be thinking about a shaker table. You can dial in specific peak to peak values with it. I only use mine for seismic devices though (its about as portable as a boat anchor). Here is a well made video on using a shaker to test proximity probes. ua-cam.com/video/bgA7HXPhD1o/v-deo.html
@@jimdiggins101 Frankly speaking I have not been in the neighborhood of either your antique device or the shaker table model, but am trying to understand this technology for a certain purpose. My question is, is your device just a antique and handicapped version of the shaker table model or does it offer any other function which the shaker table model doesn't?
@@karoly365 The TK3 offers few benefits: Lighter, simple, more robust, easy to repair, and I would guess a lot cheaper. The modal shop shaker doesn't come by default set up to test proximity probes, you have to buy all the attachments. The TK3 is ready out of the box to test vibration, thrust and keyphasor. Shaker has more benefits than I care to list. If you are calibrating and certifying installations, definitely go with the shaker table. If you primarily work on proximity probes and just need a diagnostic tool, I would go with the TK3. Go to the TMS website and look around, they have lots of information.
The product tested in the video is 6.5%. Each product has a different margin of error. If you look in the product literature you will find a recommendation. It is also important to consider how much of an error is acceptable for your rotating equipment vibration measurement.
The plate of the TK3 has a hole drilled in the outside edge of the plate. This can be used for testing keyphasor probes. The probe is installed in the slot and gapped against the outside radius of the wheel. When the plate rotates, the hole passes by the probe face creating an increase in voltage on the proximitor output terminal. The frequency of the voltage change is used to calculate the rotation speed.
Review the video at 4:38 and it will explain. You multiply the voltage measured by the square of 2. This is done to convert the RMS voltage to Peak voltage.
Hi Mr Jim you have explained different vibration types very nicely. Thank you
You are very welcome
Thanks sir, it is a very informative vidéo with a clear explanation
Thank you for this amazing work. Really appreciate
You are welcome
You should provide a link for the spreadsheet. I have been doing vibration for years and could still use it. Thanks!
I will take that into consideration. Here is a UA-cam video that explains how to make your own: ua-cam.com/video/NAj6hDok3U4/v-deo.html
What kind of results will you have if your probe gap is out of limits, like will it result in higher results or no results at all?
As long as the measurement occurs within the range of linearity, it will produce accurate measurements.
most proximity probe measure slightly less than 1volt or 10mil. and to get middle range gap voltage have to subtract 1volt. Sir, appreciate explain this. what will happen if not doing so.
Bently recommends gapping 3300 5/8mm at .050" (-9VDC), which is the center of the linear range of the device. If you used 10V instead, it would still work for most applications.
So there is no straightforward method to simulate 5 mils peak to peak vibration in that massive instrument, rather than going through making engravings?
Point taken, the machine seems antiquated because it is. One could generate the sine wave using a signal generator, but that would only test the computer's ability to measure voltage and frequency. The TK3 tests the entire system, including the computer.
@@jimdiggins101 am I right to believe that the new TK3s can choose specific peak to peak voltage?
@@karoly365 I have a newer TK3 and it is very similar to the one in the video. The set up is the same. You may be thinking about a shaker table. You can dial in specific peak to peak values with it. I only use mine for seismic devices though (its about as portable as a boat anchor). Here is a well made video on using a shaker to test proximity probes. ua-cam.com/video/bgA7HXPhD1o/v-deo.html
@@jimdiggins101 Frankly speaking I have not been in the neighborhood of either your antique device or the shaker table model, but am trying to understand this technology for a certain purpose. My question is, is your device just a antique and handicapped version of the shaker table model or does it offer any other function which the shaker table model doesn't?
@@karoly365 The TK3 offers few benefits: Lighter, simple, more robust, easy to repair, and I would guess a lot cheaper. The modal shop shaker doesn't come by default set up to test proximity probes, you have to buy all the attachments. The TK3 is ready out of the box to test vibration, thrust and keyphasor. Shaker has more benefits than I care to list. If you are calibrating and certifying installations, definitely go with the shaker table. If you primarily work on proximity probes and just need a diagnostic tool, I would go with the TK3. Go to the TMS website and look around, they have lots of information.
Hello Jim what is the model of the wobulator? Cheers
This is a very old Bently Nevada TK3. The newer model does not use mounting hubs.
Hello Sir, what is the MDS 100 Data Acquisition CBT module?
It is a computer based training module that can be purchased from Bently Nevada.
NICE JOB 👍 WELL EXPLAIN
Hi Mr. Jim What is the margin of error?
The product tested in the video is 6.5%. Each product has a different margin of error. If you look in the product literature you will find a recommendation. It is also important to consider how much of an error is acceptable for your rotating equipment vibration measurement.
@@jimdiggins101 thank You!!! You really help me!👍
Is there a way to download your spreadsheet?
You can make your own spreadsheet by following the instructional video available on my you tube channel.
Where can I find your spreadsheet
I apologize, but at this time i cannot distribute the spreadsheet.
@@jimdiggins101 not a problem anymore I made my own
Hi Mr. Jim, how can i test keyphasor?
The plate of the TK3 has a hole drilled in the outside edge of the plate. This can be used for testing keyphasor probes. The probe is installed in the slot and gapped against the outside radius of the wheel. When the plate rotates, the hole passes by the probe face creating an increase in voltage on the proximitor output terminal. The frequency of the voltage change is used to calculate the rotation speed.
@@jimdiggins101 do you have any example of this aplication?
@@jimdiggins101 thank you for answering me
@@angelojunior9507 I will email you.
@@jimdiggins101 thank you very much
Can get the spreadsheet please
Nice video
Thanks
Why must 357 / 1.4142 ?
Review the video at 4:38 and it will explain. You multiply the voltage measured by the square of 2. This is done to convert the RMS voltage to Peak voltage.