The principle of temperature and pressure of a surface

Temperature and pressure of a surface is thermal function of the bimetallic thermometer and the function of the pressure gauge pressure on a table. A table has the function of the two tables, but only occupy a space for installation. High temperature and pressure of a surface, also called water meter, instrument of boiler, etc. Mainly used in heating systems or other needs in the pipe system of measuring temperature and pressure at the same time. The dial pointer readings, can be clear at a glance whether equipment system in the correct temperature and pressure. Temperature and pressure of a surface heat part is composed of bimetallic strip. When the temperature changes, because the bimetallic strip of the materials of the two different linear expansion coefficient is relatively large and produce different expansion and contraction, leading to a bimetallic strip bending deformation, the amount of deformation of different produce different momentum, momentum transfer drive connection shaft, shaft drive at the other end of the indicating needle, indicating pointer is just on the correct reading, indicate the temperature. Pressure on the temperature and pressure surface parts is usually composed of elastic element and movement. Sensitive element within the pressure gauge by table bourdon tube elastic deformation, again by the transformation mechanism of movement in table will stress deformation to a pointer, pointer rotation to display the pressure. Process and equipment through the thread connection. According to different pipe, temperature and pressure of a surface also have different connection mode, mainly divides into the axial and radial two kinds. The diagram below: usually a body surface temperature accuracy is: temperature and pressure of + / - 1. Is 5%, the accuracy of pressure: + / - 3 - 2 - 3%. High temperature and pressure of a surface, also called water meter, instrument of boiler, etc. Mainly used in heating systems or other needs in the pipe system of measuring temperature and pressure at the same time. The dial pointer readings, can be clear at a glance whether equipment system in the correct temperature and pressure. Widely used in the heat pipe network, water supply, gas supply system.