Steam pressure type thermometer and the difference between the gas pressure type thermometer1

Pressure type thermometer is the use of heat pump type system of measuring temperature instrument. So-called heat pump type system, by inductive charging temperature, medium temperature, capillary and pressure sensitive elastic element consisting of all metal components. It 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. As capillary pressure type thermometer can be up to dozens of meters, and has simple structure, low price, is widely used in the production process of the distance of corrosive liquid or gas temperature measurement. We often use is circular gauge steam, gas, pressure type thermometer. Steam pressure type thermometer and the primary difference between gas pressure type thermometer

influence factors of steam pressure type thermometer

gas pressure type thermometer

heat medium scale divisions for the nonlinear relationship between the pressure and temperature, so the scale is not equal

turn plexus medium for the linear relationship between the pressure and temperature of bisected so scale

bulb size bulb smaller packages larger

temperature

use range does not exceed 200 ℃ can achieve 500 ℃ 600 ℃

the environment temperature to do not produce additional error value for the

to influence value, compensation measures should be taken to

the atmospheric pressure to generate additional value for error and need correction before use the

impact on basic no value for the

installation position header and the location of the bulb to have additional value for error, one should be in the same height as far as possible

header and the impact of bulb location can be ignored