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We're currently using a NI-9213 thermocouple device with our cDAQ 9178 chassis. We need to take temperature measurements on pcb components such as voltage regulators and cathodes of diodes, thus would to use our 9213. However, we've noticed that input volage on the 9213 device is +/-78mV. Are there any options or methods to use the 9213 with thermcouples that possible be attached to components that may be as high as +25vdc?? Thanks for any ideas!
Use isolated thermocouples. They tend to be bulkier and have slower response times, but might be an option. Omega has 24 AWG thermocouples with PFA insulation rated to 250 C for example. They also have many other styles.
