How do you determine the bimetallic thermometer specification?

Bimetallic thermometer is a kind of commonly used in industrial equipment up to temperature measuring instrument, it can be directly measured various - in the process of production 50 ℃ ~ + 500 ℃ within the scope of liquid, steam and gas medium temperature. Its working principle is to round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, called the free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial. To cooperate with all kinds of casing installation, satisfies the requirement of different pressure levels. How to determine the specification of the bimetallic thermometer? Bimetallic thermometer specification parameter is determined by the use of the environment. We can according to the need of the use of the environment to determine the following parameters: 1, the nominal diameter: such as Φ 60, 100, 120, 150; Φ Φ Φ 2, accuracy, such as 1. 0 and 1. 5; 3, process connection thread: such as M20 * 1. 5,1/2NPT; 4, installation method: such as direct welding type, screw type installation, flange installation type; 5, the thermal response time & le; 40年代; 6, protection grade: IP65. 7, 8 temperature measuring range, insertion depth ratio