Tool/software:
Hello,
We have older HPE1413C DAQs we are using to read a differential voltage reading from a high side shunt. The DAQ is limited to 16V common mode voltage, and we're using the 1V range to read a 20mOhm shunt up to 30A unidirectionally. We have access to 5V and +-15V rails. We would like to make an adapter board in-between the shunt and DAQ to be able to read from a common mode up to 48V. What would be the most accurate solution? The analog current sense amplifiers have gain which we don't think we need and a single ended output. We're less familiar with differential and instrumentation amps that might be a better solution but don't see one with a common mode above the input voltages. What solution would be recommended, cost is less important than accuracy as it will only be used on in house test equipment, thanks.