10-25-2016 09:39 AM
Hi I have a 9203 module that's is a current sensing module and it's an 8 channel module, I am measuring a 4-20 ma pressure transducer from a compressor which is in this module and works perfectly in Labview, and I would like to have a different device, measure that same current and effectively Y splitting the cable. How can I do that?
10-26-2016 04:45 PM
Hi jehad10,
Here is a good document that explains and gives examples on how to set up transducers and devices in a 4 - 20 mA current loop:
Fundamentals, System Design, and Setup for the 4 to 20 mA Current Loop
http://www.ni.com/white-paper/6940/en/
Splitting the line would represent a current division, which would not preserve your readings, however you can boost the voltage of your power supply and connect the two devices in series (see Figure 6) to ensure that the loop is still receiving the power it needs.