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701 Trace Hydrogen Sensor

701 Trace Hydrogen Sensor

Sensor Features

  • High sensitivity to low hydrogen concentrations (10 - 1000 ppm)
  • Fast response time (15 seconds at 100 ppm)
  • Environmental temperature range of -20 to 50°C
  • Environmental humidity range of 0 to 90% RH, noncondensing
  • Low dependence on flow rate

Electrical Characteristics

Property Symbol Value Remarks
Heater Power Consumption PH ~600 mW At VH = 5.4
Heater Voltage VH 5.4 VDC Tsensor ~240°C
Heater Resistance RH 30Ω ± 2Ω At room temperature
Sensing Voltage Vc 5.0 VDC Recommended
Resistance in Air Ra 2.0 MΩ/500 MΩ Min / Max
Resistance in 500 ppm H2 R500 5 kΩ/500 kΩ Min / Max
Sensitivity Ra/R500 > 25 Min