A high-stability temperature and pressure control device for volumetric corrector calibration

Abstract

The utility model discloses a kind of high-stability temperature pressure control devices for volume correction instrument calibration, comprising: gas source, pressure detection and control unit, gas path circulating device, data processing unit, temperature detection and control unit, first and second temperature sensor;Gas path circulating device and the volume correction instrument to be calibrated are communicated by circulation loop, adjust circulation loop flow rate and temperature;Pressure detection and control unit connect gas source and circulation loop;First, second temperature sensor is connected respectively in the air inlet end, air outlet end of the volume correction instrument to be calibrated;Temperature detection and control unit are connected respectively with first, second temperature sensor and detect airflow temperature;Data processing unit is connected respectively with pressure detection and control unit, temperature detection and control unit and gas path circulating device, for sending detection control instruction and receiving back data.The utility model provides high-stability temperature pressure environment for volume correction instrument calibration, improves calibration efficiency and accuracy.

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