Learn about the issues to pay attention to when installing thermocouples

The installation methods of thermocouples are as follows: the main fixing methods are flange connection, threaded connection, welding, etc. According to different applications and usage requirements, which fixing method should be selected according to parameters such as pressure and temperature. So what aspects should we pay attention to during installation and use? The instrument summarizes the following points: When using the HD-WR thermocouple compensation wire, pay attention to whether the model is matched, and the sex cannot be connected correctly. Also ensure that the temperature of the compensation wires and thermocouple connections cannot exceed 100°C. When measuring or controlling temperature using thermocouples with large time constants, it should be noted that although the temperature displayed by the meter may be small, the actual furnace temperature may fluctuate. already big. In order to measure the actual temperature more accurately, a thermocouple with a small time constant should be selected to ensure accurate results. According to the wiring diagram of the meter, after correct wiring and power-on, please note that the meter first displays the index number of the meter's thermocouple, and then displays the meter's range , and display the digital tube below. Meter line. The set temperature and the measured temperature are displayed on the upper digital tube of the meter. HD-WR thermocouples cannot be installed in areas where there is little flow of the measured medium. When using a thermocouple to measure the temperature of a gas in a tube, make sure the thermocouple is mounted in the opposite direction of flow and fully connected to the gas. Get in touch, in order to make more sufficient heat exchange between the thermocouple and the measuring end of the thermal resistance and the measured medium, the position of the measuring point should be selected reasonably.

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