Other Parts Discussed in Thread: INA326,
Hi,
I am amplifying a tension and compression strain gauge type load cell with the INA 337, but I am running into issues.
Two issues I am having.
1. I am unable to provide the load cell signals to the amplifier unless I have a buffer on each input. However I feel like this should not be the case as there should be already a very high input impedance on the amplifier
2. The amplifier does not work when I do an offset voltage. So I am trying to offset my output by 2 volts (hence the 4v at pin 5) but whenever I use this circuit my load cell input is not amplified and the output of the amplifier is stuck around 2.3 volts
Also when I measured current between the load cell signal and the amp input there was a current of 9mA coming from the amp to the load cell.
Am I doing something wrong in my circuit?
Thanks,
Allen