Why choose movable external thread bimetallic thermometer?

Movable external thread bimetallic thermometer, can be found everywhere in our industry. It belongs to a kind of bimetallic thermometer, as shown in the figure below, it means the installation for movable threaded bimetallic thermometer. So why choose movable external thread bimetallic thermometer? In fact, the movable external thread compared with the fixed screw is one of the difference of fixed thread by thread end face seal, the movable thread depends on sealing ring seal; Advantage is fixed thread header and the connection of the Angle is fixed, the entire header when installation with screw rotation, and the movable external thread header when installation and screw thread connection is active. This advantage is also based on its application scenario arises at the historic moment. Because the movable external thread bimetallic thermometer is commonly used on large equipment, imagine that we put the bimetallic thermometer is installed on the equipment, screw tight after a big possibility of its header is not just the vertical to the ground, our reading is not so convenient, and if it is moving to use external thread bimetallic thermometer, after installed, we are free to adjust the position of a good header, and then should be fixed to live, so we usually reading is very convenient. Actually each kind of connection mode has its advantages and disadvantages, according to the use of the environment, choose suitable.