The SafEye 700 Optical Open Path (Line-of-Sight) Gas Detection System employs “spectral fingerprint” analysis of the atmosphere using the Differential Optical Absorption Spectroscopy (DOAS) technique in a unique (patented) method.
SafEye 700 consists of an advanced Xenon Flash infrared transmitter (source) and infrared detector (receiver), separated over a line of sight from 13 ft. (4 m) up to 460 ft. (140 m) to detect and quantify flammable gas presence, even when challenged by extremely harsh environments where dust, fog, rain, snow or vibration can cause a high reduction of signal.
The SafEye 700 analyzes atmospheric absorption at three selected spectral bands, two in a region where the target gas absorbs and one where it does not absorb. The ratio between these absorption lines can provide accurate information of the gas concentration along an optical path.
The reference sensor detects beam blockage, compensates for changing humidity and detects failed light source or dirty optics.
SafEye’s source and detector units are both housed in low profile, rugged, stainless steel, ATEX approved enclosures. The main enclosure is approved 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 (EExia) data port on the detector. The combined ATEX approval is therefore Ex II 2(1) GD, EExde ia [ia] IIC T5 (55°C).
SafEye 700 includes heated optics on the transmitter (source) and receiver (detector) to address icing, condensation and snow.
Modern accessories include an Intrinsically Safe approved, Hand-Held Unit which is an all-in-one Diagnostic / Calibration / Interrogation plug-in unit that assists one-person installation and maintenance.
The NEW SafEye Version is based on Proven Technology and Performance. Thousands of first generation Flash Type SafEye are installed on offshore platforms, FPSO's, refineries, and other onshore applications operated by British Petroleum (BP), Shell, ExxonMobil, Statoil, and others.
One person can simply and easily align and commission SafEye with separate horizontal and vertical adjustments.
Direct reading, High Sensitivity and Fast Response (3 sec) ensures instant action and maximum safety.
Reliable detection of gas leaks including a wide range of gaseous hydrocarbons such as: Alkanes, Alkenes (C1-C8), Alcohols, LNG, LPG, Ethylene, etc.
Less units needed for protection compared with point type detection. One system can replace from 5 to 20 point gas detectors. Low cost of ownership, much lower installation cost!
Provides relatively wide angle of view, better than 1°, to withstand vibration, mechanical shock and displacements.
Standard 4-20 mA output with a new mode (3 mA) “Maintenance call” or RS-485, Modbus-compatible output to allow networking (up to 256 detectors) to a central monitoring / PC system. This feature also enables easy maintenance, local and remote diagnostic tools.
Electro-optical system, not effected by chemicals.
Stainless steel 316L, IP66/67, Zone 1 ready design.
|Response Time||T90 - 3 sec|
|Immunity to False Alarm||Is not influenced by solar radiation, hydrocarbon flames and other external IR radiation sources.|
|Spectral Response||2.0 - 4.0 µm.|
|Sensitivity Range||0 - 5 LEL.m (optional 0 - 2 LEL.m)|
|Displacement/Misalignment Tolerance||± 1˚|
|Drift||Long-term ±5% of full scale|
|Temperature Range||-40˚F (-40˚C) to 131˚F (55˚C)|
|Warranty||SafEye system - 3 years
Flash source bulb - 10 years
|Power Supply||24 VDC nominal (18-32 VDC)|
(peak includes heated optics)
|Detector: 150mA @ 24 VDC (200 mA Peak)
Source: 100mA @ 24 VDC (220 mA Peak)
|Electrical Connection||2 x 3/4˝ - 14NPT conduits or 2 x M25 x 1.5 mm ISO|
|Electrical Input Protection||According to MIL-STD-1275A|
|Electromagnetic Compatibility||EMI/RFI protected CE Marked|
|Outputs - 4-20mA||Sink (source option) configuration
|Outputs - RS-485||The RS-485 input/output provides complete data information to a PC and receives control commands from the PC or handheld unit|
|Outputs - Relays||
Alarm, Fault and Accessory
SPST volt-free contacts rated 5A at 30 VDC or 250 VAC
Fault relay normally closed, others normally open
|Approvals||ATEX EX II 2(1) GD, EExde ia [ia] IIC T5 (55˚C).
The detector or source units have a combination of approvals. Each is a single enclosure (EExd) with integral, segregated rear terminal section (EExe) and intrinsically safe (EExia) data-port for external in-situ connection to Hand-Held Diagnostic unit.
|Enclosure||The source and detector housings are stainless steel 316L with electropolish finish. The circuit boards are conformal coated and protected from mechanical vibrations. The tilt mount is also Stainless Steel 316L.|
|Water and Dust Tight||IP66 and 67
NEMA 250 6P
|Environmental Standards||Meets MIL-STD-810C for Humidity, Salt & Fog, Vibration, Mechanical shock, High Temp, Low Temp|
|Dimensions||Detector: 8.2 x 5.7 x 6 inch (210 x 145 x 154 mm)
Source: 10 x 5.3 x 6.9 inch (255 x 135 x 175 mm)
Tilt Mount: 4.7 x 4.7 x 5.5 inch (120 x 120 x 140 mm)
|Weight||Detector: 9.2 Lb (4.2 Kg)
Source: 10.1 Lb (4.6 Kg)
Tilt Mount: 4.2 Lb (1.9 Kg)