NI USB - 6218 and Load Cell

[Alexis_Koul]

Hello Everyone,

I have the NI USB-6218 Multifunction I/O and I am trying to connect it and test 2 load cells. After connected, I am using the NIDAQ Express but I cant select the Force (Bridge) Input  but just voltage.

While I am applying load, I can see only a small difference in the voltage. I have tried changing the scale of the axis but still the same..

What would you suggest? I am connecting the Load Cell with a DC power supply and then the white and yellow cable to the DAQ and the DAQ via USB to the computer. Do I need to do something? Do I need to connect also the DAQ with a power supply?

Regards,
Alexis

[JiwhanS]

Hi Alexis_Koul,

The NI 6218 looks like it does basic Analog and Digital IO. You'll want to use different hardware to take bridge measurements. The links below have some more information:

Choosing an NI Measurement System for Strain, Pressure, Load, or Torque

https://www.ni.com/en-us/innovations/white-papers/12/choosing-an-ni-measurement-system-for-strain--p...

Load, Pressure, and Torque Measurements: How-To Guide

http://www.ni.com/tutorial/7138/en/