一、存在的问题大气采样器(以下简称“采样器”)主要以采样泵抽取样品,定量采集大气中气态或蒸气样品,用于分析其中的相关组分含量。采样器中的流量计是保证定量采集的关键部分。当前使用的流量计主要类型有浮子流量计、气体质量流量计(热式质量流量计、旁通毛细管加热型多用于小流量)等。对于不同的流量计,其 First, the existing problems Atmospheric sampler (hereinafter referred to as “Sampler ”) mainly to sample the sample pump, quantitative acquisition of gaseous or vapor samples of the atmosphere for the analysis of the relevant components. The flow meter in the sampler is a key part of ensuring quantitative acquisition. The current use of the main types of flow meter float meter, gas mass flow meter (thermal mass flow meter, bypass capillary heating type used for small flow) and so on. For different flow meter, it