What is armored thermistor and how to judge its quality? 2

There are usually several methods to judge the quality of armored thermal resistance:

1. Visual inspection: Firstly, the armored thermistor can be visually inspected to see if there is any obvious damage, deformation, or corrosion.diode

2. Measure resistance value: Use the resistance range of the multimeter to measure the resistance value of the thermistor. Connect the two test probes of the multimeter to the two terminals of the thermistor and read the resistance value. In general, the thermal resistance of PT100 should be 100 ohms at 0 ℃. If the measured value differs greatly from the standard value, it may indicate that the thermal resistance has been damaged.diode

3. Measuring insulation resistance: A megohmmeter can be used to test the insulation resistance between the resistance element of the armored thermistor and the housing. If the insulation resistance is lower than a certain standard (such as greater than 100 megaohms under a test voltage of 500V), it indicates that the insulation performance is damaged and there may be a problem with the thermal resistance.diode