Bimetallic thermometer protecting tube using FAQ

Bimetallic thermometer protecting tube is very important, it can effectively protect the normal work of bimetallic thermometer, and can also be used for special occasions such as corrosion, high pressure, high flow, for the accuracy of the measurement result has a certain supporting role. But in use process, some people for bimetallic thermometer protecting tube there is some doubt. Users below small make up on common problems to solve for you, hope to be able to help you use: 1, the diameter of the bimetallic thermometer protecting tube is how to select, is why some phi phi 10 is 6 some? A: protecting tube diameter is mainly related to medium velocity, velocity, protecting tube diameter, the greater the response time also increases at the same time, so according to the actual situation to choose the appropriate, generally choose 10, 12, 8, 6 is also useful. 2, bimetallic thermometer protecting pipe, casing material problem: 304 ss and 316 ss, 316 LSS respectively applicable occasions? Under what circumstances the casing material need in stainless steel with PTFE? Answer: the bimetallic thermometer protecting tube material is stainless steel 304 can commonly, outer casing material and process related to the corrosive medium, as for when to add PTFE, this material control rules. 3, the diameter of the bimetallic thermometer inside/outside casing how to choose? A: the diameter of the thermometer outside casing associated with process pressure, the most is 16 * 2 * 16 * 3. 4, flange size and seal face how to choose? Sealing surface RF, FF, M how to choose? Answer: generally, flange dimensions for DN40 flange dimensions and sealing surface with connection material control of piping or equipment, there are rules.