High pressure resistant temperature sensor

Abstract

This case involves a high-voltage resistant temperature sensor, including: an insulating film; a thin-film thermistor part formed on the surface of the insulating film with a thermistor material; a pair of electrodes formed on the insulating film and connected to the film thermal The sensitive resistance part; the insulating film is composed of the following materials by weight: 50 parts by weight of aluminum carbide; 20-22 parts by weight of iron oxide; 12-14 parts by weight of cobalt oxide; 3-5 parts by weight of magnesium nitride. The invention improves the insulating film material of the temperature sensor so that it has good insulation performance. The temperature sensor of the invention can meet the conditions of high temperature and high pressure at the same time, and has a long service life, environmental adaptability, and detection safety and reliability. it is good.

Description

technical field [0001] The invention relates to a temperature sensor element, in particular to a high pressure resistant temperature sensor. Background technique [0002] The sensor is made of conductor materials of different polarities installed in a metal casing with insulating material, and processed into a bendable solid assembly. The sensor is mainly used for temperature measurement in high-temperature, high-pressure and high-humidity places, such as power stations, etc. Since the temperature sensors used in power stations have high operating temperature (about 350°C) and high operating pressure (17.2MPa), conventional insulating materials are used as the sensor seal materials, which cannot meet the needs of special environments such as power stations. The high-temperature and high-pressure temperature sensors currently used are all imported, and their cost is high and maintenance is difficult, which seriously restricts the development of power station temperature meas...

AI Technical Summary

Problems solved by technology

The sensor is mainly used for temperature measurement in high-temperature, high-pressure and high-humidity places, such as power stations, etc. Since the temperature sensors used in power stations have high operating temperature (about 350°C) and high operating pressure (17.2MPa), conventional insulating materials are used as the sensor seal materials, which cannot meet the needs of special environments such as power stations

The high-temperature and high-pressure temperature sensors currently used are all imported, and their cost is high and maintenance is difficult, which seriously restricts the development of power station temperature measurement technology in my country.

The existing high temperature resistance and high pressure temperature cannot meet the reliability requirements of high temperature and high pressure environment, the temperature measurement accuracy is not good, and the service life is short

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