Gastron SafEye Quasar 900 Infrared Open Path Gas Detector

Gas Detectors Open Path Gas Detector Hydrocarbons SafEye Quasar 900

The New SafEye Quasar 900 is an open path detection system which provides continuous monitoring for combustible hydrocarbon gases. It employs “spectral fingerprint” analysis of the atmosphere using the Differential Optical Absorption Spectroscopy (DOAS) technique.

The Quasar 900 consists of a Xenon Flash infrared transmitter and infrared receiver, separated over a line of sight from 23 ft (7m) up to 660 ft (200m) in extremely harsh environments where dust, fog, rain, snow or vibration can cause a high reduction of signal.

The Quasar 900 transmitter and receiver are both housed in a rugged, stainless steel, ATEX and IECEx approved enclosure. The main enclosure is EExd flameproof with an integral, segregated, EExe increased safety terminal section.

The hand-held communication unit can be connected in-situ via the intrinsically safe approved data port for prognostic and diagnostic maintenance. The Quasar 900 is approved to FM/FMC per Class I Div 1 Group B, C and D and Class I, II Div 1 Group E, F and G, and ATEX/IECEx per Ex d e ib [ib Gb] IIB + H2 T4 Gb, Ex tb IIIC T135°C Db.

The Quasar 900 includes heated windows to eliminate condensation and icing, HART capability for digital communication and is designed to meet SIL2 per IEC61508 and FM performance approved per FM6325 and tested per EN60079-29-4.

Features of Quasar 900 Gas Detectors Open Path Gas Detector Hydrocarbons

Detects Hydrocarbon gases including methane, ethylene, Propane, Ethane, Butane etc.

Detection range: 7-200m in three different models (same detector different sources)

Technical parameters of SafEye Quasar 900

Detection principle: Differential absorption spectroscopy (DOAS) technology, "spectral fingerprint" analysis of the atmosphere.

Detection gas: Can detect C1-C8 hydrocarbon gases, such as methane, ethane, ethylene, propane, propylene, n-butane, isobutane, butadiene, isobutylene, alkanes, cycloalkanes, benzene, etc.

Detection Range

Model 901: 7m - 20m

Model 902: 15m - 40m

Model 903: 35m - 100m

Model 904: 80m - 200m

Spectral Response: 2.0 - 3.0μm

Minimum Detection Limit: 0.15LEL.m

Response Time: Less than 3 seconds

Sensitivity Range

Methane/Propane: 0 - 5LEL.m

Ethylene: 0 - 8LEL.m

Drift: ±7.5% of reading or ±4% of full scale (whichever is more accurate)

Power Supply: 18 - 32VDC (24VDC nominal)

Power Consumption

Emitter/Source: 250mA (300mA peak)

Electrical Connections: 3 or 4 wire

Communications: 4 - 20mA, Modbus, HART

Indicator: 3-color status LED (green: normal, yellow: fault, red: alarm)

Material: 316L stainless steel housing and swivel bracket

Protection level: NEMA 250 Type 6P, IP66/IP68

Operating temperature: -55℃ - +65℃

Operating humidity: 0 - 95% RH (non-condensing)

Certification: ATEX, IECEx, CSA, FM, UL, ETL, SIL2 according to IEC 61508

Main models

SafEye Quasar 901: Detection range 7m - 20m.

SafEye Quasar 902: Detection range 15m - 40m.

SafEye Quasar 903: Detection range 35m - 100m.

SafEye Quasar 904: Detection range 80m - 200m.