Protecting tube with far eastone double metal thermometer has what effect

With remote transmission of the bimetallic thermometer is the use of two different temperature expansion coefficient of metal, welding in fixed point at one end, on the other side when the temperature distortion, converts it into a pointer deflection Angle, indicating the temperature. Core pulling type refers to bimetal thermal element can change from the external protecting tube, is the most widely used field indicating thermometers. Take far eastone bimetallic thermometer for improving the temperature measurement sensitivity, will usually made of metal spiral coil shape. When multi-layer metal temperature change, the layers of metal expansion or contraction, makes the spiral coil rolled up or let go. As a result of the spiral coil end fixed and the other end connected to a free rotating pointer, therefore, when the bimetallic strip feel the temperature change, Pointers can be on a circular dividing scale to indicate the temperature. This kind of instrument of temperature measurement range is - 80 ~ 500 ℃, permissible error are two process about 1% of the scale. According to take far eastone bimetallic thermometer pointer plate with the direction of protecting tube connection bimetallic thermometer can be divided into axial, radial and 135 ° to the model and universal model. Type 1, radial bimetallic thermometer: pointer GuanPing line connection plate and protection; Type 2, 135 ° to the bimetallic thermometer: pointer disk protection tube into 135 ° and connectivity; 3, universal type bimetallic thermometer: pointer plate connected to the protecting tube Angle can be arbitrary adjustment; 4, axial type bimetallic thermometer: pointer plate and protection of vertical pipe connection now with far eastone double metal thermometer, is simply the indispensable industrial production field indicating temperature measuring instrument, applicable occasions can vary, so the protection of the bimetallic thermometer tube ( Sheath) Is essential. So take far eastone bimetallic thermometer protecting tube ( Sheath) What is the role? The so-called protection tube ( Sheath) , 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, then the effect of protecting tube are evident. In order to protect the inside of the temperature measuring element, is convenient to repair. Take far eastone bimetallic thermometer if the material is corrosive, high temperature, high pressure, easy explosion risk factors such as, easy to burn, you must add protection casing. Also is the first in a pipe or container welding screw type or flange installation casing pipe installation, install the bimetallic thermometer in again. If the measurement is the conventional material such as air, inert gas or water, there is no need to protect casing, directly installed on the joint line, you can also save money. Through the above simple narrative, we understand that protecting tube ( Sheath) For a great role in spreading the bimetallic thermometer is far, to protect the inside of the temperature measuring element, if the bimetallic thermometer is broken, is very convenient for maintenance.