电子温压修正膜式燃气表技术分析

Technical Analysis of Electronic Temperature-Pressure Correction Membrane Gas Meter

电子温压修正膜式燃气表依据所采用的电子温压体积修正技术路线分为两种:机械计量-电子间接计量温压体积修正、电子间接计量温压体积修正。其中,电子间接计量温压体积修正又分为纯电子间接计量温压体积修正和带机械二次间接计量的电子间接计量温压体积修正。阐述这3种电子温压体积修正膜式燃气表的基本原理和温压体积修正流程。带机械二次间接计量的电子间接计量温压体积修正技术的机械计数器字轮显示数值是人为干预的结果,无实质意义,存在影响燃气表计量准确度的风险。膜式燃气表电子温压体积修正技术应采用机械计量-电子间接计量温压体积修正技术或纯电子间接计量温压体积修正技术,二者的计量数据可以作为贸易结算的基础数据。

The electronic temperature-pressure correction membrane gas meter is divided into two types according to the electronic temperature-pressure volume correction technology adopted: mechanical metering-electronic indirect metering temperature-pressure volume correction and electronic indirect metering temperature-pressure volume correction. The electronic indirect metering temperature-pressure volume correction is divided into pure electronic indirect metering temperature-pressure volume correction and electronic indirect metering temperature-pressure volume correction with mechanical secondary indirect measurement. The basic principle and temperature-pressure volume correction process of the three electronic temperature-pressure volume correction membrane gas meters are explained. The numerical value of the mechanical counter of the electronic indirect metering temperature-pressure volume correction with mechanical secondary indirect measurement is the result of human intervention,and has no substantial meaning,and there is a risk of affecting the accuracy of gas meter measurement.Membrane gas meter electronic temperature-pressure volume correction should use mechanical metering-electronic indirect metering temperature-pressure volume correction technology or pure electronic indirect metering temperature-pressure volume correction technology,and the measurement data of the two can be used as the basic data of trade settlement.