美国华瑞泵吸式FGM-2001有机气体探测器(RAEGuard 2) 订货号型号气体标准量程备注 D03-0001-C00FGM-2001VOC0-100ppm扩散 D03-0002-C00FGM-2002VOC0-1000ppm扩散 D03-0004-C00FGM-2001VOC0-100ppmFlowthrough