英国Alphasense CO-B4 一氧化碳传感器 4电极

性能
灵敏度            2ppmCO，nA/ppm                                        500-750
反应时间          t90 从零点到10ppmCO (s)                               < 25
零点电流          20℃在零点空气中（nA）                                -30~-120
噪声*             平均噪声（ppb）                                       < 10
检测极限*         ppb                                                   < 5
范围              CO 质保检测范围（ppm）                                50
线性度            全量程ppm误差，0-15ppm时线性                          < ±1
过载              对气体脉冲稳定反应最大的ppm                           100
*要求低噪声稳压电路以获得最小的干扰和最好的分辨率

寿命
零点漂移          实验室空气中每年变化的ppb                             < 30
灵敏度漂移        实验室空气中每年变化的百分比                          < 10
工作寿命          输出下降至80%原始信号的时间（月）（质保24个月）       > 24

环境             
-20℃时灵敏度     5ppm CO时，（-20℃时的输出/20℃时的输出）%            35-50
50℃时灵敏度      5ppm CO时，（50℃时的输出/20℃时的输出）%             117-124
-20℃时零点       参考20℃时ppm变化量                                   < ±0.1
50℃时零点        参考20℃时ppm变化量                                   < ±0.2

交叉灵敏度
过滤能力          ppm*小时   H2S                                        250,000
过滤能力          ppm*小时   NO2                                        120,000
过滤能力          ppm*小时   NO                                         120,000
过滤能力          ppm*小时   SO2                                        160,000
H2S               20ppm H2S测量气体的百分比灵敏度                       < 0.1
NO2               10ppm NO2测量气体的百分比灵敏度                       < 0.1
CL2               10ppm CL2测量气体的百分比灵敏度                       < 0.1
NO                10ppm SO2测量气体的百分比灵敏度                       < 0.5
SO2               20ppm CO测量气体的百分比灵敏度                        < 0.1
H2                400ppm H2测量气体的百分比灵敏度（20℃）               < 50
C2H4              400ppm C2H4测量气体的百分比灵敏度                     < 35
NH3               20ppm NH3测量气体的百分比灵敏度                       < 0.1

关键参数      
温度范围          ℃                                                    -30 ~ 50
压力范围          Kpa                                                   80-120
湿度范围          %rh                                                   15-90
存储期限          3-20℃密封保存期限（月）                              6
负载电阻          Ω（推荐）                                            33-100
重量              克                                                    < 13