METHOD FOR TEMPERATURE CORRECTION OF A MEMBRANE GAS METER WITH A ROTARY GAS DISTRIBUTION VALVE AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01F3/22 

FIELD: measurement technology.

SUBSTANCE: invention relates to a method for temperature correction of measurement of gas volume in volumetric membrane counters with a rotary valve of gas distribution. Method of temperature correction of volumetric membrane gas meter readings with rotary valve of gas distribution includes change of readings of counter reading device depending on changes of gas temperature, in which, according to the invention, temperature correction is performed by changing the cyclic volume of the gas meter in proportion to the temperature change, wherein when the gas temperature increases, the cyclic volume of gas is proportionally increased, and rotation speed of rotary valve of gas distribution is reduced, with temperature reduction cyclic volume of gas is proportionally reduced, and rotation speed of rotary valve is increased, in addition, the membrane oscillation phase is set such that at the moment of maximum deviation of one membrane, the second membrane deviation is within 0.35Lmax to 0.8Lmax, where Lmax is maximum amplitude of deflection of membranes. Disclosed method is realized in a known membrane gas counter with a rotary valve of gas distribution, comprising a measuring unit, a reading device, at least two membranes, kinematically connected to the rotary valve timing, according to the invention, the rotary gas distribution valve is connected by means of a gear transmission to a temperature correction device containing two asymmetrical horseshoe-shaped thermobimetallic plates.

EFFECT: reduction of measurement error, reduction of dimensions and simplification of possible versions of structures.

6 cl, 5 dwg