METHOD FOR CALIBRATING GAS FLOW METERS AND DEVICE FOR ITS REALIZATION Russian patent published in 2007 - IPC G01F25/00 G01M3/00 

FIELD: measuring and testing equipment engineering.

SUBSTANCE: in accordance to method, when determining actual flow of gas, displaced by gas is control liquid, preliminarily balanced by degassing, from control pipe into vessel, mounted on electronic weights, output signal of which is sent to registration computer, while values of volume and gas pressure are calculated on basis of starting mass of control liquid, mass of control liquid, displaced from control pipe at the current moment of measurement, measurement time, temperature, measured value of atmospheric pressure, known volume and height of control pipe, gas temperature, density of control liquid. Measuring device is made in form of vertical control pipe, made of non-transparent, strong material, connected with possible overlapping to output of flow meter being calibrated and having filling connection in upper part, in lower part of which a replaceable bushing being overlapped is located, through which control liquid is drained into vessel, mounted on electronic weights, output signal of which is sent to recording computer.

EFFECT: increased gas flow measurement precision, increased precision of approximation of continuous output signal of flow meter being calibrated, expanded range of measurements of one standard size of flow meters and increased reliability of their structure.

2 cl, 1 dwg