Installation precautions for explosion-proof temperature measuring resistors

The installation of explosion-proof temperature measuring resistors should pay attention to accurate and safe temperature measurement, without affecting the operation and production of the equipment. In order to meet the above requirements, when selecting the installation location and insertion depth of the temperature measuring resistor, the following points must be noted: 1. Reasonably choose the measuring end of the temperature measuring resistor to have sufficient heat exchange with the measured medium. 2 The thermal resistance with protective cover has heat transfer and heat dissipation losses. In order to reduce measurement errors, the thermocouple and thermal resistance need sufficient insertion depth: (1) The thermal resistance for measuring the fluid temperature at the center of the pipeline is generally 100 mm. In the case of a measured fluid pipeline diameter of 200mm, the insertion depth of the thermal resistance needs to be selected as 100 mm. (2) For temperature measurement of high temperature, high pressure and high-speed fluids (such as main steam temperature), the standard insertion depth of the protective cover on the fluid is 100mm. When measuring the temperature of smoke in the flue, the diameter of the flue is 4m, but the insertion depth of the thermal resistance body is 1m