Spectrex SafEye Quasar 900 Open Path Gas Detector


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The Spectrex SafEye Quasar 900 is an Open Path Gas Detector which provides continuous monitoring for combustible gases. The Spectrex SafEye Quasar 900 uses Differential Optical Absorption Spectroscopy (DOAS) technology to analyze the spectral fingerprint of the atmosphere.

The Spectrex SafEye Quasar 900 Gas Detector as a xenon flash IR Transmitter and an IR Receiver. They can be separated over a line of sight ranging from 7m up to 200m in harsh environments where dust, fog, rain, snow or vibrations can cause a high reduction of the signal.

Detects Hydrocarbon gases including methane, ethylene, Propane, Ethane, Butane etc.
Detection range: 7-200m in three different models (same detector different sources)
Built in event recorder – real time record of the last 100 events
Fast connection to Hand-Held for prognostic and diagnostic maintenance
Heated optics
SIL2 approved, per IEC61508
-HART protocol for maintenance and asset managements
-RS-485, Modbus Compatible
High reliability – MTBF minimum 100,000 hours
User programmable via HART or RS-485
3 years warranty
Ex approval:
-FM/FMC approved per – Class I Div 1 Group B, C and D; Class I, II Div 1 Group E, F and G
-ATEX & IECEx approved per – Ex d e ib [ib Gb] IIB + H2 T4 Gb; Ex tb IIIC T135°C Db
-Performance test: Approved to FM6325 and tested per EN60079-29-4 by FM

Additional information



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7-20 m, 15-40 m, 35-100 m, 80-200 m