The use, installation, and requirements of PT100 thermal resistance

The use, installation, and requirements of thermal resistors:
During use, attention should be paid to the installation of thermistors, which is beneficial for accurate temperature measurement, safe and easy maintenance, and does not affect equipment operation and production. When selecting the installation location and insertion depth of thermistors, the following points should be noted:
In order to ensure sufficient heat exchange between the measuring end of the thermal resistance and the measured medium, the position of the measuring point should be reasonably selected, and the installation of thermal resistance near dead corners of valves, elbows, pipelines, and equipment should be avoided as much as possible
2. Thermistors with protective sleeves have heat transfer and heat dissipation losses. In order to reduce measurement errors, thermocouples and thermistors should have sufficient insertion depth: A. For thermistors measuring the fluid temperature at the center of the pipeline, their measurement end should generally be inserted into the center of the pipeline (vertically or obliquely installed). If the diameter of the measured fluid pipeline is 200 chamber meters, the insertion depth of the thermistor should be selected as 100 chamber meters:
B. For temperature measurement of high-temperature, high-pressure, and high-speed fluids (such as main steam temperature), in order to reduce the resistance of the protective sleeve to the fluid and prevent the protective sleeve from breaking under the action of the fluid, the shallow insertion method of the protective tube or the use of a hot sleeve type thermal resistor can be adopted. The shallow insertion type thermal resistor protective sleeve should be inserted into the main steam pipeline at a depth of no less than 75mm, and the standard insertion depth of the hot sleeve type thermal resistor is 100mm;
C. If it is necessary to measure the temperature of the flue gas inside the flue, although the diameter of the flue is 4m, the insertion depth of the thermal resistor is 1m, which is sufficient. When the insertion depth of the measuring element exceeds 1m, it should be installed vertically as much as possible, or support frames and protective sleeves should be added