| 摘要 |
PURPOSE:To make it possible to measure accurate flow rate, by computing the rate of transporting gas by the correlation of combination of a differential pressure signal, or a pressure signal, or any of the signals from differential pressure detectors and a pressure detector. CONSTITUTION:A flow rate measuring device is provided with the following parts: transport pipe 1; an upstream-side differential pressure detector 2a, which is attached to the transport pipe 1; a downstream-side differential pressure detector 2b, which is attached to the downstream side of the transport pipe 1 from the upstream-side differential pressure detector 2a; a pressure detector 3, which is attached to the transport pipe 1 between the two differential pressure detectors 2a and 2b; and a temperature detector 4, which is attached to the transport pipe 1 between the two detectos 2a and 2b like the pressure detector 3. The flow rate of transporting gas is computed based on the correlation of combination of a differential pressure signal, or pressure signal, or any of the signal from the differential pressure detectors. Thus the accurate measurement can be performed. |
