NO-B4 Nitric Oxide Sensor 4-Electrode

PERFORMANCE
Sensitivity              nA/ppm at 2ppm NO                                                          500 to 850
Response time      t90 (s) from zero to 2ppm NO                                            < 45
Zero current          nA in zero air at 20℃                                                          30 to 140
Noise*                   ±2 standard deviations (ppb equivalent)                             15
Range                   ppm NO limit of performance warranty                                20
Linearity                ppb error at full scale, linear at zero and 5ppm NO             < ±1
Overgas limit         maximum ppm for stable response to gas pulse                  50
* Tested with Alphasense ISB low noise circuit

LIFETIME 
Zero drift                ppb equivalent change/year in lab air                              0 to 50
Sensitivity drift        % change/year in lab air, monthly test                           0 to -20
Operating life          months until 50% original signal  (24 month warranted)     > 24

ENVIRONMENTAL
Sensitivity at -20℃  (% output at -20℃/output at 20℃) at 2ppm NO         60 to 90
Sensitivity at 40℃   (% output at 50℃/output at 20℃) at 2ppm NO         97 to 110
Zero at -20℃          nA                                                                                 0 to 30
Zero at 40℃           nA                                                                            100 to 200

CROSS SENSITIVITY
H2S            sensitivity % measured gas at 5ppm H2S (after 3 minutes)      < 10
NO2           sensitivity % measured gas at 5ppm NO2 (after 3 minutes)      < 4
Cl2             sensitivity % measured gas at 5ppm Cl2                                   < 3
SO2           sensitivity % measured gas at 5ppm SO2                                  < 5
H2              sensitivity % measured gas at 100ppm H2                             < 0.1
CO             sensitivity % measured gas at 5ppm CO                                < 0.3
NH3           sensitivity % measured gas at 5ppm NH3                               < 0.1
CO2           sensitivity % measured gas at 5% Vol CO2                            < 0.1
O3             sensitivity % measured gas at 100ppb O3                                 < 4
Halothane sensitivity                             at 100ppm Halothane                  < 0.1

KEY SPECIFICATIONS
Bias voltage             mV(working electrode potential is above reference electrode)   +200
Temperature range  ℃                                                                       -30 to 40
Pressure range        kPa                                                                    80 to 120
Humidity range       % rh continuous                                                   15 to 85
Storage period        months at 3 to 20℃ (stored in sealed pot)                     6
Load resistor          Ω (ISB circuit is recommended)                         33 to 100
Weight                    g                                                                                < 13