环境温度对气压传感器测量误差的影响分析

Analysis of Effect of Ambient Temperature on Measurement Error of Air Pressure Sensor

针对自动气象站常用的气压传感器,该文研究环境温度对气压传感器测量误差的影响。在实验室环境中,设计不同温度条件下的温度对气压传感器测量误差的影响的实验。实验选取一批PTB220型气压传感器,在-40℃~+50℃之间10个不同的温度点上分别测量示值误差。通过对测量数据的定量分析,结果表明,环境温度的变化会导致气压传感器测量误差的变化,常温条件下,温度对测量误差的影响是有限的,低温条件下,温度对测量误差的影响较大。

The influence of ambient temperature on the measurement error of air pressure sensor is studied for the air pressure sensor commonly used in automatic weather station.In the laboratory environment,the experiment of the influence of temperature on the measurement error of air pressure sensor under different temperature conditions is designed.A batch of PTB220 pressure sensors are selected to measure the indication error at ten different temperature points between-40℃and+50℃.Through the quantitative analysis of the measurement data,the results show that the change of ambient temperature will lead to the change of the measurement error of the air pressure sensor.Under normal temperature,the influence of temperature on the measurement error is limited,while under low temperature,the influence of temperature on the measurement error is greater.