General Description
The HPS-100 is an automotive hydrogen sensor that monitors hydrogen concentrations of 0 – 100 Vol%. The design fulfills Zone 2 requirements according to ATEX 100a. The predicted concentration is transmitted to the host via the CAN bus interface or PWM.

FEATUREs
• 0 – 100% H2 in nitrogen
• Accuracy ±2% vol.
• Resolution ±0.5% vol.
• Heated field-effect transistor technology
• No detection towards HC, H2S, N2, CO, CO2, NOx
• Humidity influence <1% typical
• Operating humidity range 5–100% relative humidity
   including condensation
• Start-up time <5s
• Speed of response (t90) < 5s
• Speed of recovery < 5s
• CAN bus interface 500 kbit/s (ISO11898-2)
• PWM output (on request)
• 70 mA (typical)
• ESD and EMC protection
• Operating temperature range –40ºC to 90ºC
• Operating pressure range 0.3 – 3 bar (absolute)
• Designed for SIL2 (IEC 61508) and ATEX 100a zone 2
• IP6K7 and IP6K9K qualified with expected lifetime of 5 years

Benefits
• High sensitivity over large
   concentration range
• Low cross sensitivity
• Designed for humid environment
• Fast response time
• Low power consumption
• Long-term stability and reliability
• Safety integrity level and
   explosion proof
• Long lifetime

APPLICATIONs
   Hydrogen gas measurement in fuel cell systems and other
   in-process applications.