Spectrex™ SafEye Quasar 900 Combustible Gas Detector
The Spectrex SafEye Quasar 900 is an open path combustible gas detection system designed for continuous monitoring of hydrocarbon gases across a defined line of sight. Using a Xenon Flash infrared transmitter and infrared receiver, the Quasar 900 analyzes the atmosphere between the two units to detect combustible gas hazards before they escalate.
Built for harsh industrial environments, the SafEye Quasar 900 can monitor path lengths up to 660 ft. / 200 m, depending on the selected model. It is engineered to maintain reliable performance in conditions where dust, fog, rain, snow, vibration, condensation, icing, or signal reduction may affect conventional detection methods. Automatic gain control supports accurate detection with up to 95 percent signal obscuration, while heated optics help reduce condensation and ice buildup on the optical window.
The Quasar 900 detects C1-C8 flammable gases and includes standard gas calibration options for methane, propane, and ethylene. With a response time of under two seconds, high false alarm immunity, HART® and RS-485 Modbus® communication options, and rugged stainless steel 316L construction, it is well suited for open-area combustible gas monitoring in refineries, chemical facilities, fuel storage areas, compressor stations, LNG/LPG systems, offshore platforms, and other hazardous industrial sites.
Available in BC, AB, and SK through Westech Industrial, the Spectrex SafEye Quasar 900 can be supported by Westech’s technical team for product selection, service support, troubleshooting, and broader fire and gas detection requirements. Westech can also assist with custom fabrication needs, including detector mounting considerations, system integration support, fabricated assemblies, and fire and gas solutions designed for demanding Canadian industrial environments.
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Description
Open Path Combustible Gas Detection
The SafEye Quasar 900 monitors combustible hydrocarbon gases across the open path between its transmitter and receiver. As a result, it helps protect large hazardous areas where point detection alone may not provide preferred coverage. This SafEye combustible gas detector supports continuous line-of-sight monitoring for industrial sites with broader detection requirements.
Fast Response in Under Two Seconds
The detector provides accurate and reliable high-speed response in less than two seconds. Therefore, operators can identify combustible gas hazards quickly and support faster alarm or control system action.
Detection of C1-C8 Flammable Gases
The Quasar 900 supports simultaneous detection of C1-C8 flammable gases. It is designed for hydrocarbon gases such as methane, ethylene, propane, ethane, butane, and others. This capability makes it suitable for many combustible gas detection applications.
Reliable Operation in Harsh Conditions
Industrial sites often face dust, fog, rain, snow, vibration, and other difficult operating conditions. However, the SafEye Quasar 900 is designed to maintain reliable performance when signal strength drops. Its automatic gain control supports accurate detection with up to 95 percent signal obscuration.
Heated Optics for Condensation and Ice Protection
The transmitter and receiver include heated optics for challenging outdoor conditions. These heated windows help reduce condensation, snow, and ice buildup on the optical surfaces. Consequently, the system can maintain stronger performance in harsh weather.
High False Alarm Immunity
The SafEye Quasar 900 helps reduce nuisance alarms in real-world industrial environments. It is not influenced by solar radiation, hydrocarbon flames, external infrared or ultraviolet radiation sources, rain, or water spray. This false alarm immunity helps improve confidence in the gas detection system.
Field Configurable Communication Options
HART® and RS-485 Modbus® communication support field configuration, diagnostics, and maintenance review. In addition, these communication options help integrate the detector with host systems, controllers, and asset management tools.
Event Recording for Maintenance Review
An RTC event recorder stores the last 375 events. This record helps maintenance teams review system activity, support troubleshooting, and document detector status over time.
Rugged Stainless Steel Construction
The receiver, transmitter, and tilt mount use stainless steel 316L construction with electrochemical and passivated coating. This rugged design supports durability in hazardous areas, process facilities, and exposed outdoor installations.
Flexible Installation Ranges
Four transmitter models support detection distances from 23 ft. / 7 m up to 660 ft. / 200 m. Additionally, range adapter accessories are available for shorter-range installations. This flexibility helps match the detector to the required path length.
Hazardous Area and Functional Safety Approvals
The SafEye Quasar 900 includes hazardous area approvals for demanding industrial environments. It also includes SIL-2 approval per IEC 61508. Therefore, it supports safety-focused combustible gas detection applications across high-risk facilities.
Applications
The Spectrex SafEye Quasar 900 is designed for facilities that need combustible hydrocarbon gas detection across open areas, equipment zones, process spaces, storage locations, and hazardous operating environments.
Common applications include:
- Petrochemical, pharmaceutical, and chemical storage and production areas
- Flammable chemical storage sites
- Hazardous waste disposal areas
- Refineries
- Oil platforms
- Pipelines
- Refueling stations
- Fuel storage facilities
- Hazardous loading docks
- Transportation depots
- Shipping warehouses
- Engine rooms
- Compressor and pumping stations
- Test cells
- LNG and LPG systems
- Offshore FPSO facilities
- Fixed oil rigs
Manufacturer Info
Spectrex is a leader in Flame and Open Path Gas Detectors field. We are fully committed to enhance the safety of your employees, capital investments and to the environment.




