In front of the bimetallic thermometer model of WSS represents what mean?

WSS bimetallic thermometer, bimetallic thermometer is we used to say, it is a common used to measure the - 50 to 500 c field temperature instrument, which can be directly on-site display temperature, intuitive and convenient, safe and reliable, long service life. Widely used in petroleum chemical industry, industrial equipment, hvac, nuclear power, and Marine and other fields. It is the working principle of thermal element is composed of two layers of linear expansion coefficient difference is relatively large pieces of metal welded together, one end of the element as the fixed end, on the other side of the free end. When the temperature changes, because the bimetallic strip of material is different, linear expansion coefficient of relatively large differences, and produce different expansion and contraction, leading to the curving deformation of bimetallic strip, equipped with a transmission mechanism on the free end pointer and dial temperature labeling) So that it can directly show the temperature value. We often see in front of the bimetallic thermometer model WSS, for example & other; WSS401” “ WSS322” And so on, so in front of the bimetallic thermometer model what exactly express these letters? Instrument a: WSS represents the meaning of the W represents temperature instrument, S metal expansion type, S bimetallic strip temperature component, WSS behind the first number represents the dial diameter, the second number is on behalf of the installation, the third number represents the connection method of installation and the fourth number is on behalf of the access to the thread. For example: & other; WSS401” Said bimetallic thermometer 100 mm in diameter, the axial installation, no fixed installation, generally at the time of purchase, of course, also need the material, temperature range, accuracy, access to the thread size, heat pipe length, heat pipe diameter, etc. , because these requirements will affect the final price and delivery time. In the instrument, for a standard double metal thermometer, the delivery date is 10 - 14 days.