A brief introduction of mechanical thermometer

Mechanical thermometer is a type of thermometer, is made through the use of thermoelectric phenomena. Thermometer of two different kinds of metal wire welded together to form work side, the other two ends connected to the measuring instrument, forming circuit. Measured temperature, put the work end work end and free end temperature is not at the same time, can appear electromotive force, and therefore has a current through the circuit. The working principle and working principle of bimetallic thermometer is relatively similar, so the function of mechanical thermometer and bimetallic thermometer is similar. The working principle of mechanical thermometer requested material if the larger material, two kinds of temperature difference of copper & ndash; — Lala, iron & ndash; — Lala, nickel inscription & ndash; — Lala, gold cobalt & ndash; — Copper, platinum & ndash; — Rhodium, etc. Measuring temperature can be as high as 3000 ℃, and some can also be measured close to absolute zero temperature. Such temperature measurement range and material properties, also let more than mechanical thermometer used to measure all kinds of solid surface, gas, liquid, temperature, asphalt, plastic and rubber, etc. Are widely used in rubber, textile, paper making, shipbuilding, food, iron and steel, nonferrous metals, petroleum products, ceramic, glass and other industries.