What are common industrial thermometer?1

Bimetallic thermometer manufacturers instrument as a professional bimetallic thermometer, winding thermometer and pressure type thermometer manufacturers, the company produces three kinds of thermometer is commonly used in industrial thermometer, but industrial thermometer is not only the three, so common industrial thermometer are those? Several specific types, you take a look at. 1, the 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℃- Liquid + 500 ℃ range steam and gas medium temperature. Bimetallic thermometer is made of round shape into threaded heat dual metallic piece as temperature sensing element, and put it in a protective sleeve, one end fixed ( Fixed end) And the other end, The free end) Connection on a thin shaft, shaft end is equipped with a pointer. When the temperature changes, temperature sensing element of the free end immediately rotation, thus fine axis pointer to produce angular displacement, indicates that the change in temperature on the dial. Due to the temperature sensing element has a linear relation with temperature changes, so the location of the bimetallic thermometer pointer indicated is measured temperature value. 2, heat resistance thermometer. Thermal resistance is to use the metal conductor or semiconductor resistance with the temperature changes itself along with the change of characteristics to measure temperature, thermal resistance of the heating part ( Thermal element) Is evenly around the insulation material with fine wire is made on the skeleton or formed on the substrate by laser ablation process. When measured medium temperature gradient, the temperature is measured by thermal element lies within the scope of the average temperature of the medium layer.

3, electronic thermometer. Electronic thermometer compared with traditional thermometer, the output temperature using digital tube display, has reading convenient, accurate temperature stability, high precision, wide measurement range, and the advantages of low energy consumption, very suitable for daily temperature measurement. Most of the digital thermometer is the temperature sensor using temperature sensitive element ( Such as platinum resistance, thermocouple, semiconductor, thermistor, etc. ) , will change with the temperature change and physical parameters, such as inflation, resistor, capacitor, thermoelectric emfs and magnetic, frequency, optical properties, such as through the change of temperature sensors into electrical signals, such as the change of the voltage and current, the temperature change and the change of the electrical signal has A certain relationship, such as linear, curve relationship, such as electrical signals are amplified circuit is enlarged to produce suitable for AD converter convert electrical signals, after analog-to-digital conversion circuit which USES A/D converter converts analog signals to digital signals, digital signals to drive circuit output, and then through the display unit, such as digital tube or LCD display, this completes the basic function of measuring temperature digital thermometer. 4, pressure type thermometer is based on a closed system inside the volume of a substance or pressure changes with the temperature of working principle. Instrument closed system composed of bulb, capillary and elastic element, wen bags as working medium, when measuring temperature, insert the bulb of the measured medium, affected by the medium temperature, temperature package internal working medium volume or pressure changes, the capillary pass this change to elastic component, components elastic deformation, displacement of the free end, with the aid of transmission mechanism, drive the pointer indicates the temperature value on the dial. 5, high water meter. A body surface temperature and pressure, can measure pressure, and can measure the temperature, one table is multi-purpose. Is suitable for various kinds of heating system, which can be read out at the same time, pressure and temperature. On the choice of thermal material, which has two kinds of copper and stainless steel. If need products have good thermal conductivity, it is recommended that the choice of copper; For corrosion resistance and alkali resistance, choose stainless steel is recommended. Glass rod thermometer thermometer glass rod by a liquid glass bulb, heat, capillary and scale and safety package of five parts. When the measured medium, put a thermometer in heat in thermal fluid volume expansion in heated, thermal fluid in capillary height will vary with different temperature being measured, which can be read on the scale of measured temperature value.