ntc thermistors are basically non-linear resistors made of semiconductor ceramic materials sintered from oxides with relatively low thermal inertia. Generally speaking, the value of the entire resistance changes with different temperatures. However, changes gradually occur. In the process of actual use of ntc thermistors, their temperature coefficients can be divided into many different types, but different types of temperature coefficients are basically a response to the entire measurement environment. At present, In the actual use of the current ntc thermistor, there are basically a variety of different measurement methods. What most people want to know is what the ntc thermistor test method is, in fact, the test method of this product There are still many different testing standards.

1. Room temperature detection.

In the ntc thermistor test method, if the room temperature test is to be done, it can indeed bring us a better test guarantee. Put the multimeter in the place where the electricity is blocked. Two are better than the two that directly contact the thermal meter resistance. Angle end, in this case, the entire foreign language table can better read the value on the thermistor, and during the actual test of the entire thermistor, if you want to select the appropriate resistance file, then it is under this premise Below, if the reading is 0 or infinity, it basically means that the thermistor has been damaged.

2. High temperature detection.

High temperature detection is actually a very important detection standard for many people. At present, the current high temperature detection can completely use the electric soldering iron as heat close to the thermistor. However, the actual detection process is carried out in the ntc thermistor product. Among them, if the resistance value displayed by the multimeter changes significantly relative to the resistance value at room temperature, or the entire resistance value will return to the normal resistance value after being removed, then this situation also indicates that the entire thermistor is good of.

3. Low temperature detection.

If you want to use a multimeter for testing, you will basically use the multimeter to clamp the two silver corners of the thermistor, and put all the thermistors in the refrigerator. Normally, the temperature coefficient of the thermistor is basically also It will be different. If the positive temperature coefficient gradually increases with the value of the thermistor, the resistance value displayed by the multimeter will decrease significantly relative to the resistance value at room temperature.

There are many test methods for ntc thermistor. When choosing any test method, we must pay attention to the body temperature, which is higher than the ambient temperature. When holding the thermistor with your hand, observe whether there is any resistance reading Variety. At the same time, check the temperature of this thermistor during each test, and make sure to measure it after it drops to room temperature.