Magnet thermometer can correctly detect the temperature of the metal surface

Often engaged in relevant industry work, some of the work equipment is to detect temperature, of course, the surface temperature measurement is a major aspect of temperature measurement. In machinery, metallurgy, energy and defense departments, measurement of the temperature of metal surface are very common. For example: heat treatment of castings, forgings, gas pipes, steam pipes, wall, etc. Various kinds of metal surface temperature measurement of the furnace, the temperature is from dozens of degrees, a few baidu to 1000 degrees, for such a temperature, the most commonly used method is to use direct contact measurement method. It is used in a variety of thermocouple, with adhesives or welding method, thermocouple and direct contact with the metal surface to be tested, then put on the thermocouple received display instrument of temperature measurement system, according to the metal surface temperature. But the test cost is higher, here introduce a single magnet thermometer produced by instrument, it is to rely on the double metal heat bilges cold shrink principle of sensors to work, by contact spring or magnet at the bottom of the thermometer to measure the metal surface and reading. This type of double metal thermometer can range from 30 to 500 c, c accuracy can be + / - 3%. For some of the requirements for accuracy is not high occasions, the use of thermometer of cheap is a money and beauty.