Bimetallic thermometer is inserted into the depth of what is right

In the use of the bimetallic thermometer, we often encounter such a problem, what on earth are measuring pipe temperature, medium insertion depth is suitable? Bimetallic thermometer is made without expansion coefficient of two kinds of metals ( Or alloy) Piece together form a thermal components, generally made spiral wound, its one end fixed and the other end ( The free end) Equipped with a pointer. When the temperature changes, the thermal component of curvature change, free end rotation, thus promote pointer indicates the temperature value on the dial. When measuring temperature, protecting tube length is less than 300 mm, the insert depth should not be less than 70 mm, protecting tube length is more than 300 mm, inserted depth of not less than 100 mm, pay special attention to: when installation should avoid collision heat tube, don't make the protection tube bending deformation.