Flow measurement method and device for differential-pressure-type flow sensor

• Main Authors: WANG JIANGUO, SHEN YAQI
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2018
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The invention provides a flow measurement method and device for a differential-pressure-type flow sensor. The flow measurement method comprises the following steps that S0, a t1 moment and a pressuredifference value P1 of the differential-pressure-type flow sensor are collected; S1, a tn moment and a pressure difference value Pn of the differential-pressure-type flow sensor are collected, whereinn is an integer larger than or equal to 2; S2, a differential pressure difference value delta Pn corresponding to a tn moment and a tn-1 moment is calculated, delta Pn is equal to Pn-Pn-1, and the differential pressure difference value delta Pn is saved in a queue with the length of L in sequence; S3, a root-mean-square value RMSn of a differential pressure difference value queue is calculated; S4, the flow is calculated according to the root-mean-square value RMSn, and the flow is in linear relation with the root-mean-square value RMSn. According to the flow measurement method and device, the measurement result is ac