The thermocouple thermometer in the large equipment instrument

Temperature instrument, many industries are useful, not just in work, every family should also prepare a temperature thermometer, can timely measurement of body temperature, of course, such as industrial thermometer, compared temperature thermometer measurement range is small. Measuring temperature is common in the marketplace, thermometer, such as industrial bimetal thermometer, mercury thermometer, etc. , in fact, like refrigerators, water tanks can use heat resistance thermometer, these large equipment USES a temperature sensor, so, along with small make up to get to know. Thermocouple thermometer is the use of two different metal conductor contact, heated to produce thermoelectric potential made of the principle of measuring temperature instrument. Mainly by the thermocouple, compensation conductor and electrical measuring instrument ( Galvanometer) Of three parts. With two different conductors or semiconductor ( Hot electrode) One end of the welded to each other, to form a thermocouple work side ( Hot side) Measured medium, insert with it to measure the temperature. The free end of the thermocouple, The cold end) Respectively through wires connected to measuring instrument. When the work end and free end of the thermocouple temperature difference exists, the thermoelectric potential are produced, so there is current on the compensating conductor through, and the bigger the temperature difference, the thermoelectric potential and wires on the current. By observing the pointer deflection Angle measuring instrument, can be directly read out the temperature of the measured medium. The commonly used ordinary platinum rhodium - Rhodium thermocouple ( WRLL type) The maximum temperature of 1600 ℃. Ordinary platinum rhodium - Platinum thermocouple ( WRLB) The maximum temperature of 1400 ℃. Ordinary nickel-chromium - Nickel silicon thermocouple ( WREU) The maximum temperature of 1100 ℃. Pay more attention to relevant information, instrument and meter co. , LTD. Hangzhou bimetallic thermometer manufacturers.