Bimetallic thermometer protect the pipe diameter and how to choose?

Some people will find that a lot of people at the time of purchase or customize the bimetallic thermometer, bimetallic thermometer will be requested to form a complete set of protection tube, why want to add case? Do not add protection tube is not can use the same? But also save costs! Protecting tube is actually is very important, below, is specifically the bimetallic thermometer protecting tube. The so-called protection tube, just as its name implies is to protect the thermometer. With explosive, corrosive, high temperature and high pressure, easy to burn the measurement of risk factors, such as medium, the thermometer can not directly contact, also is the first in a pipe or container welding screw type or flange installation casing pipe installation, install the bimetallic thermometer in again, then the effect of protecting tube are evident. Generally the bimetallic thermometer with a protective casing, in order to protect the inside of the temperature measuring element, is convenient to repair. 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. So, the selection of the protection of the bimetallic thermometer tube have pay attention to? Because we know that heat pipe some of them are from some is 10, so, this also is to have the rules. It is how to choose? Why do you choose? About the selection of protection tube mainly has two need to know: 1, the diameter of the thermometer outside casing associated with process pressure, the most is 16 * 2 * 16 * 3. 2, protection tube diameter is mainly related to medium velocity, velocity, protecting tube diameter, the greater the response time also increases at the same time, so you select the appropriate according to the actual situation, generally choose 10, 12, 8, 6 is also useful. Protecting tube, as it were, for the role of the bimetallic thermometer is very big, can protect the inside of the temperature measuring element, if broken, at the same time also is very convenient for maintenance. Therefore, when using, must will protect the pipe sleeve on the bimetallic thermometer, lest the bimetallic thermometer can normal measurement.