Views: 0 Author: Site Editor Publish Time: 2023-01-18 Origin: Site
With the advancement of science and technology, the types of thermistors continue to increase, and the equipment system of epoxy thermistors is constantly updated. It has adapted to the high-strength requirements of some electronic machines in the open field, which has improved work efficiency and convenience. The staff's monitoring of the temperature improves the accuracy of the temperature.
What are the specific reliability and failure characteristics of epoxy thermistors?
Understand what is the dissipation factor of epoxy thermistor?
What is the maintenance method of an epoxy thermistor?
Resistors have a service life, and the resistance value will change during long-term use. The specific reason is that the amorphous structure tends to crystallize. It is generally believed that every 10° increase in temperature will shorten the life by half.
Under the rated voltage and power, the resistance has a long service life, and the estimated value is 100,000+ hours.
The dissipation factor is defined as the ratio of the change in power consumption to the final change in body temperature of the thermistor. It is expressed in mW/K and is used as a load measurement to increase the body temperature of the steady-state thermistor by 1 K. The higher the dissipation factor, the more heat the thermistor dissipates to the surrounding environment.
Since lead length and materials, packaging materials, mounting, and assembly all help determine the dissipation factor, it is recommended to test the prototype in a "real" environment. These tests determine the maximum allowable input current to ensure that at the highest measurement/control temperature, the internal self-heating error of the thermistor is negligible. However, there is a delicate balance between the applied current and the applied power, and this balance must be as low as possible to maximize system sensitivity.
Do not drop, bump or vibrate.
Never bend a sheath that is not designed to be bendable. Even a slight bend will adversely affect the calibration or the service life of the epoxy thermistor.
Never immerse the transition joint in liquid.
Do not exceed the temperature specification of the epoxy thermistor.
Do not soak the epoxy thermistor for a long time, especially at temperatures where oxidation may occur.
Do not pull or over-tighten the temperature sensor cable.
If the warm epoxy thermistor needs to be annealed, please use the recommended temperature and technique. Then, always verify accuracy by comparing it to the main standard.
Regularly compare the accuracy of epoxy thermistors with major standards, such as water three-point batteries.
The continuous advancement of science and technology promotes the updating of performance and functions of various parts and equipment to meet the needs of different levels and conditions. The thermistor can help people detect the real-time situation of the temperature and ensure that the temperature is within a reasonable range. The epoxy thermistor has high efficiency, good quality, and strong heat resistance in work, so it is widely used. We have an experienced technical team, a scientific production management system, and an efficient logistics system to ensure the quality of the products, allowing you to worry and rest assured! If you want to know more about our products, please click our company website: https://www.cnjept.com/.
