12-05-2024 11:57 PM
I am trying to use NI9205 with a s-step 10kg load cell. The red and black wires of the load cell are powered by a 5V DC supply. The green wire of the load cell is in the AI4 channel in NI-9205, and the white wire is in the AI12 channel. I am using DAQ Assist and have chosen the voltage configuration for channel AI4. Continuous samples are taken, and a differential terminal configuration is used. A waveform graph is plotted.
The issues-
1) The voltage reading should be 0 and constant when no load is applied. But it is oscillating around 0.
2) When I add 200 g, the voltage reading should increase. But there is no change.
The load cell does not have a problem since I have tested it with Arduino and HX711.
PFA the relevant images and details of the load cell. Waiting for the reply. Thanks in advance.
12-06-2024 07:07 PM
It seems like your load cell outputs a floating signal, use Reference Single Ended mode instead.
From Field Wiring and Noise Considerations for Analog Signals
12-06-2024 11:58 PM
Thank you for the response.
I made it RSE and accordingly connected the wirings to AI4 and AI17. Still the voltage readings before and after adding weights is the same.
PFA the changes made.