Views: 0 Author: Site Editor Publish Time: 2023-03-30 Origin: Site
The advancement of electronic technology has promoted the technological nation of various industries and the development of productivity. The glass encapsulated NTC thermistor in the thermistor is small in size and easy to install. It is used in many industries. It can detect the temperature according to the current, which greatly improves the safety of the equipment and the quality and performance of the product. Ensure the safety of users.
What is the temperature response of the glass encapsulated NTC thermistor?
How to identify the rated power of the glass encapsulated NTC thermistor?
What should be paid attention to when measuring glass encapsulated NTC thermistor?
Although most glass encapsulated NTC thermistors are generally suitable for the temperature range of -55°C to 200°C, they can provide the most accurate readings. However, some special NTC thermistors can be used to approach absolute zero (-273.15). °C) and products specially designed for 150°C.
The temperature sensitivity of the glass encapsulated NTC thermistor is expressed as a "percent change in Celsius". According to the special circumstances of the materials used and the production process, the typical value is -3%~-6% per °C.
The rated power of the glass encapsulated NTC thermistor refers to the maximum power that the resistor can consume in a long-term continuous operation in a DC or AC circuit. There are two marking methods: resistors above 2W are directly printed with numbers on the resistor body; resistors below 2W are expressed in terms of their volume.
Load characteristics When the working environment temperature is lower than tR, the resistor can not exceed its rated power. When it exceeds tR, the load power must be reduced. There are specified load characteristics for each type of resistor. In addition, the load is allowed to be reduced accordingly under low air pressure. Under pulse load, the average pulse power is much lower than the rated power, and there are generally other regulations.
The glass encapsulated NTC thermistor should be checked before use. To check its performance is to measure whether the actual resistance value is consistent with the nominal value and whether the error is within the allowable range.
1. Determine the range according to the measured resistance value, so that the pointer indicates the middle section of the scale line so that it is easy to observe.
2. After determining the resistance range, zero adjustments should be carried out by short-circuiting the two-meter pens (directly touching), adjusting the "zero adjustments" electrical appliance so that the pointer accurately points to the "0" of the Ω scale line, and then measure the resistance. Resistance. In addition, be careful not to touch the two ends of the resistor or the metal part of the test lead. Otherwise, it will cause test errors.
If the measured resistance value is close to the nominal value, it can be considered that the quality is good.
Resistors are used in many industries, among which glass encapsulated NTC thermistors have great advantages in many equipment applications due to their smallest size. Our company has professional and technical personnel who produce this product, who can guarantee the quality of the product. If you want to get more related information, please click our company website: https://www.cnjept.com/.
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