Thread Content
When installing bimetallic thermometers, it is important to ensure accurate temperature measurement, safety, and ease of maintenance, without affecting the operation of the equipment or production processes. To meet these requirements, the following points should be considered when selecting the installation location and insertion depth of the thermal resistor: 1. To facilitate adequate heat exchange between the measuring end of the thermal resistor and the medium being measured, the location of the measurement point should be chosen carefully; thermal resistors should be installed as far away as possible from valves, elbows, and areas in pipes and equipment where heat exchange is limited. 2. Thermal resistors equipped with protective sleeves suffer from heat transfer and heat dissipation losses; to reduce measurement errors, thermocouples and thermal resistors should have an adequate insertion depth: a. For thermal resistors used to measure the temperature of the fluid at the center of a pipeline, their sensing ends should generally be inserted into the center of the pipeline (whether installed vertically or at an angle). If the pipe diameter of the fluid being measured is 200 millimeters, the insertion depth of the thermal resistor should be set at 100 millimeters ； b. For the temperature measurement of high-temperature, high-pressure, and high-speed fluids (such as main steam temperature) using bimetallic thermometers, in order to reduce the resistance exerted by the protective sleeve on the fluid and prevent the sleeve from breaking under the influence of the fluid, a shallow insertion method for the protective tube or a heat-shielded thermal resistor can be employed. For shallowly inserted thermal resistance protection sleeves, the depth of insertion into the main steam pipe should be no less than 75 mm ； The standard insertion depth for heat-shrink type thermistors is 100mm ； c. If it is necessary to measure the temperature of the smoke in the flue, even though the flue diameter is 4 m, an insertion depth of 1 m for the thermoresistor is sufficient ； d. When the insertion depth of the measuring element in a bimetallic thermometer exceeds 1 m, it should be installed as vertically as possible, or a support frame and protective sleeve should be used. For more information, please visit the company’s official website at http://www.yb1518.com/. Please retain this link when reproducing the content!