The characteristics and working principle of pressure type thermometer1

Pressure type thermometer is the use of heat pump type system of measuring temperature instrument, measuring effect relative to other more accurate thermometer, and adapt to the complex working environment. Its measuring object mainly for: gas and liquid, and require the strange and the liquid is corrosive, if it is corrosive, cause damage to internal pressure type thermometer metal structure, which lead to the failure temperature measurement. Pressure type thermometer consists of temperature inductive medium temperature filling bag, capillary and pressure sensitive elastic element consisting of all metal components.

pressure type thermometer works: mainly to achieve the purpose of temperature measurement with pressure changes.

pressure type thermometer is according to in closed containers of liquid, gas or low boiling point liquid saturated steam heated volume expansion and pressure change this principle and production, and pressure gauge to measure the pressure change. When the temperature changes, the temperature of working medium pressure changes caused by expansion, the pressure changes in the capillary to the elastic element ( Such as spring tube) , make the deformation of elastic element, the transmission mechanism make the pointer along the scale deflection, indicates the corresponding temperature value, thus the measured temperature.

pressure type thermometer features:

the pressure type thermometer with a bulb small volume, fast response, high sensitivity, reading the characteristics of intuitive, almost set the glass rod thermometer, bimetallic thermometer, gas pressure thermometer all advantages, 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. Is currently the most widely use scope, performance is one of the most comprehensive mechanical thermometer table.