| 摘要 |
FIELD: measurement equipment.SUBSTANCE: autonomous gas counter comprises an input and an output of a gas main, a jet flow converter arranged in it with an electric output and a counting device. At the same time to the input of the gas main in parallel to a jet flow converter there is a membrane flow converter connected with an electric output connected with a counting device, in which electric signals of both converters are summed, at the same time their outputs are combined by the gas main output, and to the input of the jet flow converter there is a valve with a drive connected, which is controlled by a signal of the counting device.EFFECT: expansion of a dynamic range of measurement with preservation of simultaneously initial level of flow measurement of an available membrane counter and its sensitivity, increased resource, reduced pressure drop and error of flow measurement in the entire range.5 cl, 1 dwg |
