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It is currently functioning properly. Although the original signal circuit utilizes standard OP11EY and LM346N operational amplifiers to form the instrumentation amplifier stage, the temperature drift is minimal.

I have the LT1014 instrumentation op-amp chip on hand; would replacing the OP11EY and LM346N with the LT1014 yield better performance?

I am attempting to build an upgraded signal conditioning board using a 0.1% precision pressure sensor paired with a PGA chip; if anyone is interested, please contact me. I plan to release the design in the hope that it assists current RT-200 users or those looking to calibrate the device. I look forward to everyone sharing their insights.

Best regards

Last edited by daisizhou; 9 hours ago.
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