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HLS-442 Datasheet(PDF) 1 Page - ams AG |
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HLS-442 Datasheet(HTML) 1 Page - ams AG |
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1 / 22 page  ams Datasheet Page 1 [v1-00] 2015-Mar-30 Document Feedback HLS-442 Automotive Hydrogen Leak Sensor The HLS-442 automotive hydrogen leak sensor monitors hydrogen concentrations of 0 – 4.4% in air. The sensor is a leak sensor developed in accordance to IEC 61508 (SIL2) and explosion protected according to ATEX 100a. The predicted concentration is transmitted to the host via the CAN bus interface. HLS-442 utilizes self-calibration that is performed automatically when operated in air with normal hydrogen concentration. Therefore, the HLS-442 should not continuously be operated in elevated background levels of hydrogen. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of HLS-442, Automotive Hydrogen Leak Sensor are listed below: Figure 1: Added Value of Using HLS-442 Benefits Features • High sensitivity and excellent selectivity to hydrogen gas •0–4.4% H2 in air • Accuracy ±3000 ppm at normal operation • Low cross sensitivity • Heated field-effect transistor technology •No detection towards HC, H2S, N2, CO, CO2, NOx, H2O • Humidity influence not detectable • Fast response time •Start-up time <5s • Speed of response (t90) < 2s • Speed of recovery < 10s • CAN bus interface 500 kbit/s (ISO11898-2) • PWM output (on request) • Low power consumption • 75 mA (typical) • Long-term stability and reliability • ESD and EMC protection • Operating temperature range –40ºC to 85ºC • Safety integrity level and explosion proof • Designed for SIL2 (IEC 61508) and ATEX 100a zone 2 • Long lifetime • IP67 qualified with expected lifetime of 10 years General Description |
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