How to measure the temperature of the inner wall of a tube using a thermocouple
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May I ask, water at 110 degrees flows inside the Φ100 stainless steel pipe. How should thermocouples be arranged to measure the temperature of the inner wall of the pipe? Thank you!
The thermocouple probe can be directly attached to the inner wall of the pipe for measurement.
Hello, is it by directly soldering the thermocouple wire to the tube wall?
It’s not the wire of the thermocouple; it’s the measurement point of the thermocouple. The thermocouple generates a thermoelectric potential, and if the wire is welded to the tube wall, it becomes connected to ground, which results in inaccurate measurements.....
Make a hole and weld the thermocouple to it. . .
Make a hole in the pipe, with a diameter of about 10–20 mm; install a base for the thermocouple at that hole, then weld it shut. The thermocouple can be designed to be removable, so that it can be replaced in the future to prevent leaks! This is to measure the temperature inside the test tube; if it’s the temperature outside the test tube, it’s much simpler!