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Large noise level from input of current transducer?

I'm using NI-PXI-6239, For measuring prressure I'm using a 4-20mA Pressure transducer.

The way it is connected is 

1. +15V of SUPPLY to 1 of TRANSDUCER

2. 2 of TRANSDUCER to A1+ of PXI

3. A1- of PXI to AGND of PXI

4. AGND to 0V of SUPPLY

 

Cable is shielded, but the amout of noise level is in the range of ±1mA.

 

Is the connection right? Or what am I missing

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Hard to say without knowing the sensor.

Mike...

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Does the transducer have only a single output?  No ground?  No differential output?

 

Bob Schor

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The pressure transducer is a two wire 4-20 mA current loop, along with a ground(which I connected to the shield of the cable to th source ground).

The NI-PXI takes diffrential I/P, but i've shorted A1- and AGND.

0-10Bar -> 4-20mA

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