08-27-2022 03:30 AM
Hello,
is it possible to connect a 4-20 mA sensor with NI-6009 and read the values with labview interface ?
Thank you
08-27-2022 10:33 AM - edited 08-27-2022 10:38 AM
Yes, by using a precision resistor of 250 Ohm and 200mW or higher. The usual resistor you can normally buy is 249 Ohm +- 1 % or better. Measure the voltage over the resistor, divide by 249 and you get the current. Scale to whatever physical unit your sensor uses according to its calibration data.
08-30-2022 07:10 PM
Yes,your principle is right.Can someone share a schematic for measured current,thanks!!
08-30-2022 08:04 PM - edited 08-30-2022 08:05 PM
08-30-2022 11:30 PM
Got it,thank you so much for you prompt replied.