气体类型产品名称使用寿命（在空气中）量程分辨率（ppm）氨气(NH3)NH33E100/NH3E100SENH33E100>18月0-100ppm0.1ppmNH33E100SE>2年0-100ppm0.1ppmNH33E1000>18月0-1000ppm1ppmNH33E1000>2年SE0-1000ppm1ppmNH33E5000SE>2年0-5000ppm1ppm)