Description
The PureAire Universal Hydrogen (H2) Gas Detector is a fixed gas monitoring system designed for continuous hydrogen detection in battery facilities, laboratories, semiconductor manufacturing, hydrogen storage and handling areas, industrial processes, and other locations where hydrogen gas may be present.
This Hydrogen Gas Detector is available in 0–1% Vol and 0–4% Vol detection ranges, allowing the appropriate measurement range to be selected for the application. The PureAire Universal Gas Detector provides continuous, real-time hydrogen monitoring for facility and personnel safety applications.
The monitor features a local digital display, built-in audible alarm, visual alarm indicators, two adjustable alarm relays, and an active 4–20 mA output for integration with PLCs, facility monitoring systems, ventilation equipment, remote alarms, and other safety systems.
With the 0–4% Vol H2 range reaching hydrogen's approximate lower explosive limit (LEL) in air, the detector can be used in applications where hydrogen accumulation needs to be detected before potentially hazardous concentrations develop.
Gas: Hydrogen (H2)
Available Detection Ranges: 0–1% Vol and 0–4% Vol
Monitor Platform: PureAire Universal Gas Detector
- Continuous hydrogen (H2) gas monitoring
- 0–1% Vol and 0–4% Vol detection ranges available
- Local digital concentration display
- Built-in audible alarm
- Visual alarm indicators
- Two user-adjustable alarm relay setpoints
- Active 4–20 mA analog output
- Designed for continuous fixed gas monitoring
- Compatible with PLC and facility monitoring systems
- Remote sensor configurations available
- Remote sensor cable lengths available up to 30 ft
- 24 VDC operation
- Wall-mount design
Available Hydrogen Ranges
| Detection Range | PureAire Part Number |
| 0–1% Vol H2 | 90132 |
| 0–4% Vol H2 | 90071 |
Hydrogen Safety Monitoring
Hydrogen is a light, highly flammable gas that can accumulate near ceilings and other high points when released indoors. Fixed hydrogen monitoring can be used with ventilation, alarm, and facility control systems to provide early warning of increasing hydrogen concentrations.
System Integration
The active 4–20 mA output and adjustable alarm relays allow the detector to interface with PLCs, ventilation equipment, external horns and strobes, remote displays, and other facility safety systems when properly configured.
| Manufacturer | PureAire Monitoring Systems |
| Product Family | Universal Gas Detector |
| Gas Detected | Hydrogen (H2) |
| Available Ranges | 0–1% Vol and 0–4% Vol |
| Part Numbers | 90132 (0–1% Vol); 90071 (0–4% Vol) |
| Display | Digital concentration display |
| Analog Output | Active 4–20 mA |
| Alarm Relays | Two user-adjustable alarm relays |
| Alarm Indication | Audible and visual alarm indication |
| Power Requirement | 24 VDC regulated |
| Remote Sensor Option | Available; remote cable lengths up to 30 ft |
| Approximate Unit Weight | 1.2 lb (19.2 oz) |
The PureAire Universal Hydrogen Gas Detector is designed for continuous H2 monitoring in areas where hydrogen is generated, stored, distributed, used, or may accumulate.
Typical Applications
- Battery rooms and battery charging areas
- Hydrogen storage and handling areas
- Hydrogen generation systems
- Fuel cell facilities
- Semiconductor manufacturing
- Laboratories and research facilities
- Chemical processing facilities
- Industrial manufacturing
- Gas cabinets and distribution systems
- Energy and power facilities
- Hydrogen process equipment
- Workplace safety monitoring
Because hydrogen is lighter than air, detector placement should account for potential accumulation near ceilings and other high points. Final detector location, alarm settings, ventilation requirements, and system integration should be based on the specific application and applicable safety requirements.
Product Literature
Instruction Manuals
- PureAire Universal Gas Detector Instruction Manual – Rev. 4.18
- PureAire Universal Gas Detector Instruction Manual – Rev. 4.17
Sensor & Startup Information
- Universal Electrochemical Cell Post-Shipping Startup Instructions
- PureAire Renewable vs. Disposable Sensor Comparison
Additional Product Literature
Need help selecting the correct PureAire Hydrogen Gas Detector range, installation, calibration, or system integration? Call CPS Calibrations at 865-900-8844 or email info@cpscalibrations.com.