H2S-A1 Hydrogen Sulfide Sensor H2S Sensor Description Alphasense Hydrogen Sulfide gas sensors operate using well-known fuel cell technology. H2S-A1 Hydrogen Sulfide Sensor size: 20mm diameter, the industry standard size for portable gas detectors With very high sensitivity and low zero, accurate and stable readings are possible when measuring current concentration ranges from ppb to 1% H2S. H2S-A1 Hydrogen Sulfide Sensor H2S Sensor Specification * Range: 100ppm H2S limit of performance warranty * Sensitivity: 550 to 875 nA/ppm in 20ppm H2S * Response time t90: < 35s from zero to 20ppm H2S * Resolution: < 0.05 RMS noise (ppm equivalent) * Temperature range: -30 to 50'C * Pressure range: 80 to 120 kPa * Humidity range: 15 to 90 % rh continuous * Weight: < 6 g Matched Transmitter board for H2S-A1 H2S Sensor 4-20 mA Digital Transmitter Board * Factory calibration, custom-set for immediate use * Digital zero, sensitivity and temperature compensation * Digital and 4-20mA output * Biased or unbiased operation * Calibration and range change