H2-BF Hydrogen Sensor H2 Sensor Description Alphasense is expanding its line of electrochemical Toxic Gas Sensors to address industry-specific requirements, including emissions monitoring, process safety, environmental monitoring and VOCs. Hydrogen (H2) The Hydrogen sensor has excellent ppm sensitivity for low concentrations to 2,000ppm H2. The very low sensitivity to CO makes this one of the most selective Hydrogen sensors on the market. As with all Hydrogen sensors, temperature compensation for sensitivity must be applied carefully. Available in A series. H2-BF Hydrogen Sensor H2 Sensor Specifications * Range: 5,000 ppm H2 limit of performance warranty * Sensitivity: 10 to 25 nA/ppm in 400ppm H2 * Response time t90: < 55s from zero to 400ppm H2 * Resolution: < 0.8 RMS noise (ppm equivalent) * Temperature range: -30 to 50 deg C * Pressure range: 80 to 120 kPa * Humidity range: 15 to 90 % rh * Weight: < 13g