Compression spring type thermocouple temperature measurement

Reed fixed pressure how thermocouple temperature measurement

WR - T - 01 compression spring type fixed principle of thermocouple, indexing features and allowable deviation, reference side ( Cold junction) Temperature compensation, and the connection with display measuring instrument with general thermocouple method in the same way. Pressure reed fixed structure of the thermocouple by protecting tube, installing bolts. Lock card set, spring and thermocouple wires, etc. Reed fixed pressure thermocouple different ingredients of homogeneous conductor electrode as heat, the temperature is higher for work at the end of the end, one end of the low temperature as the free end, usually free end under a constant temperature. According to the thermoelectric emf as a function of temperature, the thermocouple indexing table; Indexing table is free end temperature at 0 ℃, under the condition of different thermocouples with different indexing table.

reed fixed pressure thermocouple loop access the third metal materials, the two contacts at the same temperature as long as the material, produced by the thermocouple thermoelectric is set to remain the same, which is not affected by the third metal access in the loop. Therefore, when the thermocouple temperature measurement, can be connected to the measuring instrument, measured after the thermoelectric emfs, can know the temperature of the measured medium. Thermocouple measuring temperature to the cold end temperature remains the same, the size of thermoelectric potential temperature is measured with a certain proportion relations. When measuring, the cold end temperature change, will seriously affect the accuracy of measurement. Take action at the cold end compensation due to the impact of the cold end temperature change is called the thermocouple cold junction compensation is normal. Connected to the measuring instrument with special compensation conductor. Pressure reed fixed thermocouple is to use the principle of temperature measurement, which is directly used as a measure of medium temperature is called the work at the end of the end, the other end is called the cold end; The cold end connected to the display instrument or meter, display instrument will point out the thermocouple thermoelectric potential. Reed fixed pressure thermocouple could be divided into two types: standard thermocouple and non-standard thermocouple. Standard thermocouple refers to the national standard specifies its thermoelectric potential and the relationship between temperature, permissible error, and a unified standard score table of thermocouple, it has with matching display instrument to choose from. Non-standard thermocouple or on the order of magnitude less than the range using standardized thermocouple, generally no unified indexing table, mainly used for the measurement of some special occasions. Press

reed fixed thermocouple with soft extension cable, free bending, the advantages of small thermal response time, use convenient wait for a characteristic, suitable for plastics extrusion machine, light textile, food and other industries.