Description
The PureAire Universal Hydrazine (N2H4) Gas Detector is a fixed gas monitoring system designed for continuous detection of hydrazine in aerospace, semiconductor manufacturing, chemical processing, research facilities, specialty-gas systems, and other applications where N2H4 may be present.
This Hydrazine Gas Detector is available in 0–1 ppm and 0–2 ppm detection ranges, allowing the appropriate measurement range to be selected for the application. PureAire's Universal Gas Detector provides continuous, real-time monitoring using renewable electrochemical sensor technology.
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, building automation systems, ventilation systems, remote alarms, and other facility safety equipment.
PureAire's Universal platform uses a renewable electrochemical sensor cell designed for long-term service and maintainability. Sensor calibration information is stored with the sensor cell to support ongoing maintenance of the monitoring system.
Gas: Hydrazine (N2H4)
Available Detection Ranges: 0–1 ppm and 0–2 ppm
Monitor Platform: PureAire Universal Gas Detector
- Continuous hydrazine (N2H4) gas monitoring
- 0–1 ppm and 0–2 ppm detection ranges available
- PureAire renewable electrochemical sensor technology
- Local digital concentration display
- Built-in audible alarm
- Visual alarm indicators
- Two user-adjustable alarm relay setpoints
- Active 4–20 mA analog output
- Sensor stores calibration information
- 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 Hydrazine Ranges
| Detection Range | PureAire Part Number |
| 0–1 ppm | 90048 |
| 0–2 ppm | 90112 |
Renewable Sensor Technology
PureAire's Universal Gas Detector uses renewable electrochemical sensor technology designed for long-term operation and serviceability. The sensor stores important configuration and calibration information to support ongoing maintenance of the gas monitoring system.
System Integration
The active 4–20 mA output and adjustable alarm relays allow the detector to interface with PLCs, building automation systems, external horns and strobes, ventilation equipment, remote displays, and other facility safety systems when properly configured.
| Manufacturer | PureAire Monitoring Systems |
| Product Family | Universal Gas Detector |
| Gas Detected | Hydrazine (N2H4) |
| Available Ranges | 0–1 ppm and 0–2 ppm |
| Part Numbers | 90048 (0–1 ppm); 90112 (0–2 ppm) |
| Sensor Technology | Renewable electrochemical sensor |
| 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 Hydrazine Gas Detector is designed for continuous N2H4 monitoring in locations where hydrazine is used, stored, distributed, processed, or may be released.
Typical Applications
- Aerospace and propulsion facilities
- Hydrazine storage and handling areas
- Semiconductor manufacturing
- Specialty-gas systems
- Gas cabinets and gas distribution systems
- Chemical processing facilities
- Industrial manufacturing
- Laboratories and research facilities
- Process equipment areas
- Toxic-gas safety monitoring
Detector placement, detection range, alarm settings, ventilation requirements, and system integration should be selected based on the specific application, potential release points, facility conditions, 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 Hydrazine Gas Detector range, installation, calibration, or system integration? Call CPS Calibrations at 865-900-8844 or email info@cpscalibrations.com.