引用本文:钱震.环境空气采样流量标定方法误差分析及校正换算[J].环境监控与预警,2012,4(2):20-21
.Error Analysis and Correction Conversion of the Flow Calibration Method of Atmosphere Sampling[J].Environmental Monitoring and Forewarning,2012,4(2):20-21
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环境空气采样流量标定方法误差分析及校正换算
钱震
南通市环境监测中心站,江苏 南通 226006
摘要:
由于压力和温度的变化,使得校正态下标定的流量与采样态实际流量不符,会给采样体积计算带来偏差。通过转子流量计流量计算公式和理想气体状态方程推导出了采样态体积与校正态体积之间的换算公式,并结合实例进行了计算,分析了采用和不采用公式计算两者之间的误差。
关键词:  大气采样  体积校正  采样态  校正态
DOI:
分类号:
基金项目:
Error Analysis and Correction Conversion of the Flow Calibration Method of Atmosphere Sampling
Abstract:
Because of the variation of pressure and temperature, the flow which has been calibrated at the correction state is not inconsistent with the actual flow at the sampling state. This will cause deviation to the calculation of sampling volume. The conversion formula between the volume at sampling state and the volume at the correction state was derived by the rotary flow-meter calculation formula and ideal gas state equation. And the error between the results derived by using or not using the formula was analyzed by calculation with practical examples.
Key words:  atmosphere sampling  volume correction  sampling state  correction state