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Thermocouple in the practical application is introduced1

2021-01-06

JVTIA

233

Rapid temperature measuring thermocouple is used to measure the temperature of molten steel and high temperature molten metal, thermocouple is a one-time consumption. Its working principle is based on metal thermoelectric effect, using the thermocouple at both ends of high temperature electric heating measurement of molten steel and molten metal temperature.

fast temperature measuring thermocouple is mainly composed of WenOu measuring head and big paper tube. I head basically has the positive and negative I wire welding on the compensation wire, compensation conductor in embedded on the bracket, bracket coat have small paper tube, accidentally to quartz support and protection. The outside with the slag cap, all components in the concentrated load NiTou and with refractory filler glue into a whole, and sealed, so for one-time use.

fast temperature measuring thermocouple method using the

1, the temperature measuring gun from the furnace is raised, used to remove the thermocouple, and install new, pause for a few minutes, prepare the next measurement. Not even measure even split, otherwise cause temperature fluctuations.

2, fast thermocouple insertion depth of the molten steel in a 300 - 400 mm advisable, don't test to measure the furnace wall or pulp are done: fast, steady, accurate, when secondary instrument to get the results, should immediately carry guns, fast thermocouple immersion time in molten steel must not exceed 5 seconds, otherwise easy to burn temperature measuring gun.

3, put the fast thermocouple on the temperature measuring gun, and secondary instrument pointer ( Or digital display device) Back to zero, then that contact is good, can be measured.

4, according to the measurement of object and range, selecting the appropriate protection tube length and suitable temperature measuring gun.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor

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