If I need to calibrate my temperature sensors, I have to use a temperature bath or a fluidized bed. Is there another way to do it?
Expert’s answer: Temperature sensor calibration
But if you really want to check the transmitter, you can simulate the sensor with a wide range of devices. You don’t need to use the field sensor to verify, but best practices recommend calibrating the set together.
Want more information? If so, have a look at these links for temperature bath options:
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