Bimetallic thermometer thermometer and light contrast

In order to help you to understand, to introduce to you under the double metal thermometer thermometer and light contrast. Bimetallic thermometer generally bimetallic thermometer is used in low temperature, thermocouple used in high temperature. If the temperature over 500 degrees so bimetallic thermometer resistance will be very big, may affect the measurement result, can appear even cannot come out measurements. Bimetallic thermometer is a kind of field detection instrument suitable for measurement of low temperature, can be directly used to measure the temperature of the liquid and gas. Bimetallic thermometer is a kind of measurement in the field of low temperature test instrument. Can be directly measured in the process of various production - 80 ℃ ~ + 500 ℃ within the scope of the liquid, steam and gas medium and bad temperature and vibration environment places. Measuring optical pyrometer thermometer: object if the temperature is high enough to make a lot of visible light, can measure the amount of the thermal radiation to determine the temperature, the thermometer thermometer is light. The thermometer mainly by telescope equipped with a red filter and a group with a small bulbs, galvanometer and variable resistance of circuit is made. Before use, first establish the filament brightness corresponds to different temperature and the relationship between the reading on the galvanometer. When used the telescope was tested, adjust the resistance, make the brightness of the light bulb and the same object under test, then from galvanometer can read the temperature of the object under test. Above is the bimetallic thermometer thermometer and light contrast knowledge introduction, hope we can have a more comprehensive and clear understanding.