PRESSURE-INSENSITIVE THERMAL TYPE FLOW METER

• Main Authors: HEIJNEN GOIJERT LAMBERTUS, HAGELSTEIN ROB, BOS JEROEN WOUTER, VON KANN STEFAN
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2021
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The invention relates to a thermal type flow meter, comprising a flow tube for a medium whose flow is to be determined, a sensor tube, having an inlet and an outlet connected to the flow tube, the sensor tube comprising a thermal flow sensor for measuring a temperature differential to determine the flow, a pressure sensor provided at the flow tube to measure the pressure of the flow, a temperaturesensor provided at the flow tube to measure the temperature of the flow, characterized by a processing unit for determination of the actual medium properties based on the pressure measured by the pressure sensor, the temperature measured by the temperature sensor and intrinsic medium data and a processing unit for determination of the flow by compensating the measurement of the thermal flow sensor with the actual medium properties and calibration data. 本发明涉及一种热型流量计，该热型流量计包括用于待确定其流量的介质的流量管，具有连接到该流量管的入口和出口的传感器管，该传感器管包括用于测量温度差以确定流量的热流量传感器，设置在流量管处以测量流的压力的压力传感器，设置在流量管处以测量流的温度的温度传感器，其特征在于，处理单元用于基于由压力传感器测得的压力、由温度传感器测得的温度和固有