can I connect a bently nevada prximity sensor 3300XL to 4 channel NI9234 DAQ

[fesmi]

Hi,

We have bought a Bently Nevada 3300XL proximity sensor which comes with a Miniature coaxial ClickLoc connector with connector protector, standard cable . We have a 4 channel NI9234 DAQ.  

Please any suggestions on the type of adaptor to use?

Thank you.

[Henrik_Volkers]

A quick search of the datasheet tells me that you need a -17 to -26V powersupply with at leat 12mA. (Not possible with the 9234)

The output voltage range of the sensor is higher than the input voltage range : -19V (sensor) to -5V (9234) so a voltage devider  is needed if you need the range (two resistors 3:1  say 3k and 1k )

I would build a power supply box with a -24V and 10V (12V) supply and add a OP(with 36V supply range)  and 4 resistors to build a level shifter  -1 to -20V  -> -5 to +5V 🙂 

(and since you asked that question, try to find a EE student or someone who knows where the hot end of a solder iron is, to build it for you)

 EDIT: Some capacitors to buffer /filter the circuit are needed too  😉

[fesmi]

Thank you for the suggestion.

However, could you also suggest which NI DAQ would be suitable for direct connection with the sensor/

I feelit best to avoid the added circuitry as it might introduce noise?

Thank you,

[Henrik_Volkers · Accepted solution]

I'm not a NI app engineer , however as far as I know there is no NI-DAQ with a -24 V powersupply and a -20V input reange.

Maybe the other way: What do need to measure ?  Your sensor seems to have a quite high nonlinearity ... maybe look for another sensor?

[fesmi]

okay, Thanks a lot..