Instrument words bimetallic thermometer selection table

A lot of type thermometer, when the choice is varied, then said the bimetallic thermometer. WSS series bimetallic thermometer is a kind of suitable for the measurement of low temperature, the scene test indicating instrument ( Can increase the thermal resistance output function) , long-distance transmission, control, display temperature, can be used to directly measure the temperature of the gas, liquid and steam, the thermometer from the design principle and structure are waterproof, anticorrosion, is in the middle of, intuitive, easy reading, no mercury pollution, strong and durable, etc. Alternative to other forms of thermometer table, widely used in petroleum, chemical industry, machinery, ships, electricity, textile, printing and dyeing and other industrial sectors. Electric contact bimetallic thermometer is installed on the basis of the original instrument electric contact structure, make the instrument control and alarm function. Contact power of 10 va ( No perceptual load) , a maximum working voltage of 380 v at six. Power type (or according to the use requirements Contact long life) Electric contact bimetallic thermometer and control current, Communication) No more than 5 a, no greater than 380 v ac voltage. The main technical indicators accuracy level: level 1 and 1. 5 level measuring range: - 40 ~ 300 c long tail: 40 ~ 2000 mm the measuring range of 0 ~ 50 c should be greater than 75 mm. When measuring range is greater than 100 c should be greater than 70 ~ 100 mm, to ensure the punctuality of measurement. Using environmental conditions: ambient temperatures - 25 c ~ 55 c: 5 ~ 95% relative humidity: medium pressure is less than 6. 4MPa. Shell material: ordinary carbon steel plating or painting plating or spray paint, stainless steel materials: iron plating, stainless steel protecting tube material: 1 gr18ni9ti structure principle of the bimetallic thermometer temperature sensing element is usually composed of two different expansion coefficient, solid combination of each other and metal spiral flat and straight helical structure. Temperature sensing element fixed at one end, and the other end connection point axis. When the temperature changes, the object to be tested two metals due to the different expansion coefficient, is a spiral tube curvature change, through the pointer shaft drives the pointer deflection, directly show the temperature value.