NI 9223 differential pairs

[Koralina33]

Dear Community Members,

I am looking for a solution to connect my 5V analog sensor using a differential pairs connection, to the NI 9223 card to protect my signal from EMF noise. By differential pairs, I mean this kind of connection: Single-ended vs. Differential Inputs.

As I am not an experienced hardware tester, the NI 9223 technical specifications did not provide sufficient guidance for me to proceed. I would like to ask if anyone has tried connecting a sensor using differential pairs to the NI 9223 or any other analog voltage card, or if anyone knows if this is possible?

The NI 9223 tech specs: 

https://www.ni.com/docs/en-US/bundle/ni-9223-specs/page/specs.html 

I have also added a sensor tech specs in attachment.

Thank you in advance for your help!

Karolina

[santo_13]

You need an additional circuit that converts the single-ended signal from the sensor to a differential signal.

Why is the concern of EMF in the picture? is the signal source far away from the instrument? would shielded cables work?

[Koralina33]

You need an additional circuit that converts the single-ended signal from the sensor to a differential signal.

Thank You, do You know if exist a ready-made such converting circuit and if, can I ask You to provide me a recommendation? I'm a noob in that kind of issues.

Why is the concern of EMF in the picture? is the signal source far away from the instrument? would shielded cables work?

The environment, where the sensor is mounted is made all over metal. It has grounding, but however it wasn't possible to get rid of all the conducted electromagnetic noise going through the metal parts of the surrounding environment.

Currently, the sensor is on self-made board, in the situation shielded cables are problematic. The sensor has two separate cables: 1-signal, 2-power supply. The sensor is not supplied by the NI card. 

I attach the picture of the sensor on the board and the cabling.

 

[santo_13]

Yes, there are single-ended to differential converters (OPAMP) available, but they will add an offset to the signal, which may be important for your application.

Why not get a better industrial linear hall-effect sensor?

Do you need it to be linear? what is your application?