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1.误差关系式膜式煤气表是一种容积式流量仪表,其误差在流量范围内是变化的,这种变化规律称之为误差特性.膜式煤气表有四个容积相同的计量室,气体通过时,计量室作为标准容器对气体体积进行测量.每个计量室均完成一次测量称为工作一个循环.一个循环所测量的气体体积称为膜式煤气表的计量容积,又称每转容积.计数机构累积循环数,并将其转换成指示值.用数学式可表示为
1. Error relationship Membrane gas meter is a volumetric flow meter, the error in the flow range is changing, this change is called the error characteristics of the membrane gas meter has four chambers of the same volume, When the gas passes, the measurement chamber as a standard container for gas volume measurement .Each measurement chamber to complete a measurement called the work of a cycle .A cycle of measurement of gas volume is called the membrane gas meter measurement volume, also known as each turn Volume. The counting mechanism accumulates the number of cycles and converts it into an indication. It can be expressed mathematically as