The H2scan HY-GUARD is a compact hydrogen area monitor designed specifically for battery rooms and energy storage systems. It provides continuous, selective H2 monitoring from 0.4 to 2 percent with fast response and no false alarms, helping you meet modern fire code requirements and improve overall safety in standby power installations.
Advanced solid state hydrogen sensor with selective H2 measurement and no cross sensitivity issues that cause false alarms in conventional sensors.
Continuous self calibration every 12 hours over the full sensor life, no calibration gas, bump testing or on site adjustments required.
Long life sensor that typically lasts for the service life of most battery systems, with integrated self diagnostics and fault relay for added safety.
Two alarm thresholds with relays at 1 percent and 2 percent H2 for early warning and critical alarm conditions, plus loud integrated buzzer.
Flexible communication options including dry contacts, 4–20 mA analogue output and Modbus RTU over RS 485 for easy integration into BMS and safety systems.
All in one housing with AC and DC power inputs, pull apart design for quick installation, maintenance and bump testing without special tools.
Designed to support compliance with IFC, NFPA 1 and NFPA 855 requirements for stationary battery and energy storage installations.
Stationary battery rooms and UPS installations in data centers, hospitals and industrial plants.
Energy storage systems and battery containers for renewable integration and microgrids.
Telecom and utility battery banks for substation and control room backup power.
Compliance driven hydrogen monitoring in accordance with IFC 608, NFPA 855 and related standards for stationary energy storage safety.
Measured gas: hydrogen in air (area monitor for battery safety).
Measuring range: 0.4 to 2 percent H2, sensor detection range up to 5 percent H2.
Accuracy: ±0.3 percent H2 absolute error.
Response time: typically 50 to 70 seconds to exceed 1 percent H2 when stepping from air to 3 percent H2 in air.
Operating conditions: 15 to 40 °C ambient temperature, 0 to 95 percent RH non condensing.
Power supply: 85 to 264 VAC and or 15 to 60 VDC, about 10 W max, automatic switchover from AC to DC if AC fails.
Outputs:
3 relays (1 percent alarm, 2 percent alarm, fault).
4–20 mA analogue output with defined states for warm up, fault and measurement.
RS 485 Modbus RTU for remote supervision and integration.
Mechanical: compact housing 132.5 × 130.5 × 52.9 mm, approx. 0.5 kg, 83 dB buzzer at 1 m, multiple mounting options including wall, ceiling, cabinet and DIN rail with adapter.
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+41 44 986 29 29
welcome@muellerag.ch
Gewerbestrasse 9
CH-8132 Egg
Switzerland
