11-02-2015 05:23 AM
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.
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11-02-2015 08:46 AM - edited 11-02-2015 08:53 AM
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 😉
11-04-2015 04:11 AM
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,
11-04-2015 08:27 AM
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?
11-09-2015 11:55 PM
okay, Thanks a lot..