The characteristics and working principle of pressure type thermometer

Pressure type thermometer and numerous species, is one of the temperature instrument, with a phial of small size, fast response, high sensitivity and direct reading characteristics, widely used in machinery, textile, chemical, pharmaceutical, food industry for the temperature measurement and control in the process of production. In order to have further cognition to pressure type thermometer, the instrument will be from the structural characteristics and working principle of pressure type thermometer to talk about two aspects: the working principle of pressure type thermometer: based on evaporation of the liquid inside the airtight temperature measuring system changes in the relationship between saturated vapor pressure and temperature, and temperature measurement, when the bulb when I feel the temperature change, causes corresponding saturated vapor pressure for closed system, cause the change of curvature elastic element, make its produce a shift in the free end, again by the displacement amplification mechanism of gear into the indicated value, the thermometer with a bulb small volume, fast response, high sensitivity and direct reading etc, it can be made into shock, anti-corrosion type, and can realize remote contact signals, heat resistance, 0 10 ma, or 4 20 ma signal. Pressure type thermometer structural characteristics: 1, has far transfer resistance signal ( 装PT100) , shock resistance, corrosion resistance and high power switch signal and other functions; 2, pressure for silicone oil liquid in the thermometer. After the spring tube perfusion; 3, the structure form is the same with the international similar products, can replace imported using characteristics of the industry; 4, with a small temperature measuring probe, high sensitivity, linear scale, long service life, etc. Through the above introduction is to pressure type thermometer are becoming more aware of?