Turbine vibration: How to measure and analyze signals from eddy current (proximity) sensors (part 1)

[@juanperez-so9zz]

Is the A4409 - BNC BOX required to capture the AD and DC signals from proximity sensors in the A3716? Can't you just plug the proximity sensor signal directly into a single channel and have the Adash analyzer split the AC part from the DC part?

[@AdashCompany]

You can connect proximity probes directly into A3716. There is no problem with that as the A3716 online system has 16 AC and 16 DC input channels. A4409 BNC Box is a special junction box for Adash VA5Pro, VA4Pro and SAB portable vibration analyzers. These analyzers can measure 4 AC or 4 DC channels simultaneoulsy (or combination) because they have only four input connectors. However 2nd input contains 4 AC channels and 3rd input contains 4 DC channels. Therefore with A4409 BNC Box you can measure all 8 channels simultaneously.

[@juanperez-so9zz]

@@AdashCompany Thanks you very much for the answer, so if I have an A3716 and for example I want to connect a proximity probe, I have to connect the sensor signal to channel 1 AC and also to channel 1 DC? that's similar to connect the sensor signal in two channels, am I right?

[@AdashCompany]

​@@juanperez-so9zz You are right. But still you are taking only 1 AC and 1 DC channel. This means you will have additional 15 AC and 15 DC channels available. Please write to our sales / technical department if you want to discuss it further. Contact: [e-mail]

[@tariqalavi]

If keyphaser trigger signal and hot spot signal are zero degree difference then keyphaser probe and Y sensor probe should be on same position. If both probes i.e keyphaser probe and Y probe are mounted 90 degree apart and hot spot and keyphaser hole are on same position then keyphaser signal and hot spot signal should also be 90 degree apart. But in this video key phaser probe and Y probe are 90 degree apart and speaker is saying hot spot and keyphaser location is same? Can anybody explain this, thanks

[@AdashCompany]

Thanks for your comment. What do you mean by "hot spot" ? Also what time of the video you are talking about? You can write us on [e-mail] for further discussion.

[@nikhiljadiye]

Can you provide Vibrational Analysis Course Link

[@AdashCompany]

Keep watching our channel ;-) We can also recommend Mobius Institute who provides distance vibration analysis learning courses.

[@jitubabusay2826]

Why using -ve voltage in vibration sensor why not + ve voltage?

[@AdashCompany]

Proximity probes manufacturers simply uses - voltage. We are afraid you will need ask them ;-)

[@johnnyvenu6893]

Npn transistor used

[@Alvarocover1]

@@johnnyvenu6893 Really negative Voltage depends of transistor. But I would guess is due PNP transistor.

[@ahmedzuhair4474]

2/12/2021