tjia123
Newbie level 1
Hello All.
The problem I have is getting a transducer to compensate with temperature; there is no thermal shift when temperature is increased or decreased. The wheatstone bridge which consists of a full bridge strain gauges are embedded in the transducer itself. I am using INA125, an instrumentation amplifier IC to complement for gain when pressure is increased. Right now, I have no problems with the gain (using a POT across R6, along with Rgain) but getting inconsistent output level at varying temperatures.
I've tried using specialized resistors (with low TC), bondable resistors and thermistor/resistor ladder network but had no success. Any help is greatly appreciated.
The problem I have is getting a transducer to compensate with temperature; there is no thermal shift when temperature is increased or decreased. The wheatstone bridge which consists of a full bridge strain gauges are embedded in the transducer itself. I am using INA125, an instrumentation amplifier IC to complement for gain when pressure is increased. Right now, I have no problems with the gain (using a POT across R6, along with Rgain) but getting inconsistent output level at varying temperatures.
I've tried using specialized resistors (with low TC), bondable resistors and thermistor/resistor ladder network but had no success. Any help is greatly appreciated.