PPI Pazifik Power, Inc. is pleased to introduce the new H2scan HY-GUARD® RS & HY-SIGHT™ lithium-ion hydrogen safety system to its portfolio of power, monitoring, and infrastructure solutions. The system combines continuous hydrogen detection, self-calibrating solid-state sensing, local visual and audible alarms, automatic safety outputs, and facility-level visibility in one integrated solution.
Why Continuous Hydrogen Monitoring Matters
Stationary batteries and energy-storage equipment can release hydrogen during charging, overcharging, equalization, or abnormal operating conditions. In enclosed rooms, cabinets, containers, and areas with limited ventilation, hydrogen can rise and accumulate at high points.
Ventilation remains an important part of battery safety, but its effectiveness depends on the room or enclosure design, battery capacity, charging conditions, airflow, and equipment arrangement. Continuous hydrogen monitoring adds real-time awareness so operators can identify changing conditions and connect alarms to the site’s defined response procedures.
From Hydrogen Detection to a Coordinated Response
The HY-GUARD RS sensor and HY-SIGHT controller/display work together to create a practical monitoring loop:
- Detect: HY-GUARD RS continuously measures hydrogen concentration.
- See: HY-SIGHT presents the live reading and alarm status locally at the point of risk.
- Respond: Configurable relay outputs can drive ventilation, equipment shutdown, and other safety actions.
- Connect: Modbus RTU/RS-485, dry contacts, and a 4–20 mA analog output support integration with wider facility controls.
One controller, up to four sensors: HY-SIGHT acts as the Modbus master and polls up to four HY-GUARD RS sensors over two-wire RS-485.
Key Benefits for Critical Power Facilities
Continuous Hydrogen Monitoring
Continuously monitors hydrogen in air and provides real-time hydrogen concentration readings from HY-GUARD RS sensors.
Accurate Self-Calibration
Delivers accurate, real-time hydrogen measurement with fast response using self-calibrating solid-state sensor technology and a service life of more than 10 years.
Relay Outputs for Safety Systems
Configurable relay outputs drive ventilation, equipment shutdown, and other safety systems automatically, transforming hydrogen detection into immediate action.
Visible and Audible at the Point of Risk
Vibrant LEDs, an intuitive display, and audible alarms provide clear local alerting with integrated alarm management through HY-SIGHT.
Full System Integration
Monitor and manage up to four HY-GUARD RS sensors from a single HY-SIGHT display for real-time visibility and control.
Reliable and Low Maintenance
Infrastructure-grade safety runs uninterrupted without consumables, routine site visits, or added maintenance workload. H2scan also offers a HY-GUARD Placement Tool with sensor-placement analysis and reporting to help optimize coverage and system performance. Final sensor locations, alarm actions, ventilation design, electrical-area classification, and emergency procedures should be confirmed by the responsible engineer and applicable authority having jurisdiction.
HY-GUARD RS Specifications
| H₂ Range | 0.4–5% |
| Accuracy | ±0.3% H₂ absolute error |
| Response Time | 10 seconds |
| Operational Temperature | −25°C to 50°C |
| Rated Temperature | 15°C to 40°C (59°F to 104°F) |
| Storage Temperature | -40°C to 70°C (-40°F to 158°F) |
| Connector Types | Relay 1%, Relay 2%, Fault, RS-485, 4–20 mA, AC & DC |
| Voltage | AC: 110–240 VAC DC: 15–60 VDC |
| Power | 10 W Max |
| Communication | Analog Output: 4–20 mA RS-485: Modbus Two-Wire |
| Dimensions | 5.1 x 5.1 x 2.1 in |
| Buzzer | Audible output for local indication |
| Certifications | IEC 61010, CE, FCC Part 15, REACH, RoHS (all certifications pending) |
HY-SIGHT Specifications
| Display | 2.1", 480 × 480 IPS with rotary encoder |
| Sensors Supported | Up to 4 HY-GUARD RS sensors |
| Speaker | Audible output for local indication |
| Communication | RS-485 (Modbus RTU), USB-C (Service) |
| Power Supply | AC: 85–264 VAC, 50/60 Hz DC: 12–48 VDC |
| Power | 5 W Max |
| Operating Temperature | 3°C to 50°C (37°F to 122°F) |
| Storage Temperature | -20°C to 60°C (-4°F to 140°F) |
| Mounting | Wall Mount, Junction Box, or Punch Out |
| Dimensions | 5.1 x 5.1 x 3.1 in |
| Certifications | IEC 61010, CE, FCC Part 15, REACH, RoHS (all certifications pending) |
Configured Alarm Levels
- Alarm 1 (Low): 1.0% H₂ - Yellow indication
- Alarm 2 (High): 2.0% H₂ - Red indication
- Fault: Sensor or system fault
Applications
HY-GUARD RS and HY-SIGHT may be considered for hydrogen monitoring in:
- UPS and data-center battery rooms
- Telecommunications backup-power facilities
- Battery cabinets and outdoor containers
- Lithium-ion standby-power and energy-storage installations
- Utility, industrial, and commercial battery facilities
- Enclosed or difficult-to-ventilate battery locations
The system complements, not replaces, properly designed ventilation, suitable electrical equipment, fire protection, safe battery installation, and a site-specific emergency-response plan. System testing during commissioning should include alarms, ventilation activation, shutdowns, remote notification, and responses to sensor, controller, communication, or ventilation faults where applicable.
Talk to PPI About Your Hydrogen Monitoring Requirements
Hydrogen safety is a critical component of dependable power infrastructure. Contact PPI Pazifik Power, Inc. today to learn how the new HY-GUARD® RS & HY-SIGHT™ can help enhance visibility, improve response readiness, and support safer battery and energy-storage operations.
