Bimetallic strip how to make a body surface temperature and pressure?

Temperature and pressure of a surface can measure PSI and KPA pressure, and temperature degrees Celsius and Fahrenheit. Temperature and pressure of a surface is designed specifically for hot water heating system, hot water boiler, swimming pool and other equipment design, be able to give a fast and accurate temperature and pressure indicator. Those metal how to make a body surface temperature and pressure? The following instrument for everyone to share! Temperature and pressure stress components of the body surface is spring tube, thermal element is the bimetallic strip, thermal sensitive element according to the different temperature and after the test, can accurate temperature indicating. Temperature and pressure thread is wound into a shape of a body surface thermal 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. Make a single body surface temperature and pressure, it is necessary to select appropriate bimetallic strip length, one end is fixed at the bottom of the dial, bimetallic strip surface should be parallel to the plane of a hair. Will the free end of the balance spring ( Prior to that end of the coil welding together) At the end of the bimetallic strip welding. Bimetallic strip bending degree have corresponding relationship with temperature, which can be used to indicate that the bending degree of bimetallic strip temperature. Typically, small expansion coefficient in the bimetallic strip layer called the passive layer, called big expansion coefficient of a layer of active layer.