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SOH-A2

SOH-A2
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Technical Specification echnical Specification SOH-A2 Dioxide Hydrogen Sulfide drog Sulfur Dioxide Hydrogen Sulfide SOH-A2 Sulfur Dioxide –Hydrogen Sulfide Technical specifications Version 1.0 Introduction Introduction Personal gas safety monitors can be be foundalmost every industry, with the the requirement multiple gas detection Personal gas safety monitors can found in in almost every industry, with requirement for becoming commonplace. for multiple gas detection becoming commonplace. Sulfur gases are toxic with a complex chemistry. Measuring both SO2 and H2S provides the information for separating Sulfur gases are but with a complex chemistry. the corrosive gases,toxicwith different toxicologies. Measuring both SO2 and H2S provides the information for separating the corrosive gases, but with different toxicologies. Specification Sulfur Dioxide Channel Specification Sulfur Dioxide Channel Performance PERFORMANCE Sensitivity nA/ppm in 10ppm SO2 Response time in 10ppmt90 (s) from zero to 10ppm SO2 Sensitivity nA/ppm SO2 140 to 250 Response time current from zero to 10ppm SO2 in zero air < 15 Zero t90 (s) ppm equivalent Zero current Resolution equivalent inrms noise (ppm equivalent) ppm zero air < ± 0.2 Resolution Range rms noise (ppm equivalent) of performance warranty < 0.2 ppm SO2 limit warranty 20 Range ppm SO2 limit of performancefull scale, linear at zero and 10ppm SO Linearity ppm error at 2 Linearity ppm error at full scale, linear at zero and 10 ppm SO2 < ±2 Overgas limit ppm maximum SO2 for stable response to gas pulse Overgas limit Lifetime LIFETIME ppm maximum SO2 for stable response to gas pulse Zero drift ppm equivalent change/year in lab air < 0.5 Sensitivity drift % change/yearlab airair, monthly test in lab Zero drift ppm equivalent change/year in < 0.5 < 6 Operating change/year in months until 80% original signal (24-month warranted) 6 24 Sensitivity drift % life lab air, monthly test < Operating life Cross Sensitivity months until 80% original signal (24 month warranted) Filter capacity ppm hours of Hydrogen Sulfide H2S sensitivity % measured gas @ 20ppm H2S CROSS SENSITIVITY NO2 sensitivity % measured gas @ 10ppm NO2 Filter capacity ppm hours of Hydrogen % measured gas @ 10ppm Sulfide Cl2 sensitivity Cl2 H2S sensitivity % measured gas @ 20ppm H2S NO sensitivity % measured gas @ 50ppm NO NO2 sensitivity % measured gas @ 10ppm NO2 CO % 10ppm Cl @ Cl2 sensitivity sensitivity % measured gas @measured gas 2 400ppm CO H2 sensitivity % measured gas @ 400ppm H2 @ 20°C NO sensitivity % measured gas @ 50ppm NO C2H % 400ppm CO C2H4 CO sensitivity 4 sensitivity % measured gas @measured gas @ 400ppm NH % 400ppm H @ 20oC NH3 H2 sensitivity3 sensitivity % measured gas @measured gas2@ 20ppm C2H4 sensitivity % measured gas @ 400ppm C2H4 NH3 sensitivity % measured gas @ 20ppm NH3 Temperature range °C Key Specifications Pressure range kPa KEY SPECIFICATIONS Humidity range % rh continuous (see note below) oC Temperature range Storage period months @ 3 to 20°C (stored in sealed pot) Pressure range kPa Load resistorcontinuous (see note below) � (recommended) Humidity range %rh o Weight months @ 3 to 20gC (stored in sealed pot) Storage period Load resistor Weight Note: Above 85% rh and 40OC a maximum continuous exposure period of 10 days is warranted. Where such exposure occurs the sensor will recover normal electrolyte volumes, when allowed to rest at lower %rh and temperature levels for several days. For further information on the performance of this sensor, on other sensors in the range or any other subject, please contact Alphasense Ltd. or visit our website at

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erformance Data Performance Data Sulfur Dioxide Channel Figure 1 SO Channel response to 20ppm SO erformance Data Performance Data Figure 1 SO Channel response to 20ppm SO Sulfur Dioxide Channel Technical specifications Version 1.0 erformance Data Performance Data Sulfur Dioxide Channel Figure 1 SO2 Channel response to 20ppm SO2 Current (nA) Current (nA) Figure 1 shows the SOH-A2 fast response, stable output and return to baseline in 20ppm SO2. Figure 1 shows the SOH-A2 Figure 1 shows the SOH-A2 fast response, stable output fast response, stable and output and return to baseline in 20ppm SO...

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Technical specifications Version 1.0 SOH-A2 Specifica ication Specification contd. Figure 4 Schematic Diagram All dimensions in millimetres (± 0.15mm) Bottom View Side View Top View Dimensions are in millimetres (± 0.15 mm). Specification Hydrogen Sulfide Channel Bottom View Side View Specification Hydrogen Sulfide Channel 20ppm H S Sensitivity nA/ppm in Performance PERFORMANCE Range Linearity Zero drift Overgas limit Response time Sensitivity current Zero Response time Resolution Range Zero current Linearity Resolution Overgas limit Sensitivity drift Operating life t90 (s) from zero to...

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Performance Data erformance Data Hydrogen Sulfide Channel Figure 4 H S Channel Response to 25ppm H S Figure 5 H S Channel Response to 25ppm H S erformance Data Performance Data Figure 1 shows the SOH-A2 fast Hydrogen Sulfide Channel response, stable output and return to baseline in erformance Data Performance Data 20ppm H s. Figure 5 H S Channel Response to 25ppm H S response, stable FigureFigure 4 the the SOH-A2 1 shows Hydrogen Sulfide Channelresponse,shows SOH-A2 fast 20ppm H S. fast output and return to baseline in stable output Technical specifications Version 1.0 Figure 1 shows the...

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