Wide range gas flow measuring circuit of low -power consumption self -diagnosis

• Main Authors: LIN JINGDIAN, ZHANG SHENGYI, HUANG XIANGKE, HUANG CHAOCHUAN
• Format: Patent
• Language: Chinese; English
• Published: 19.04.2017
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The utility model discloses a wide range gas flow measuring circuit of low -power consumption self -diagnosis. The utility model discloses a rotation that large -traffic adoption wei root sensor detected the waist wheel produces the pulse and calculates accumulation flow. Four platinum resistors's bridge circuit is adopted in the measurement of low discharge, through the change of the calculating the bridge medium voltage gaseous flow that converts. The temperature and the pressure that obtain the pipeline through temperature, pressure sensor compensate measured data, reach mark condition flow. Body group part influence of being bullied during owing to the gaseous low discharge of adoption platinum resistance measurement is great, can revise on line platinum resistance flow measurement's result at the overlapping measuring range of two kinds of measuring circuits according to the measuring result of wei root sensor, improves gaseous little flow measurement's precision to the flow measurement range of circuit