Hydrocarbon Open Path (15-60 m), Model 204 - Xenon Flash - Stainless Steel as standard by Crowcon
SafEye 200 Open Path Gas Detector is a selfcontained, fast response optical gas detection system. It detects combustible gases at concentrations lower than the explosion limit (LEL) over a "Line of Sight" of up to 460 ft. (140 m) long.
SafEye is the preferred system for offshore oil companies because it is immune to false alarms caused by partial blockage and extreme weather conditions (fog, rain, snow) and direct or reflected sunlight, flame and other black body radiation sources.
The SafEye system can be factory calibrated to a gas mixture most probable to leak in a specific location. This results in the most accurate gas concentration measurement.
SafEye is fully functional in heavy fog, rain, etc., which result in up to 90% of the signal obscuration. In a North Sea offshore installation, tested for over six harsh winter months which included very dense fog, snow and rain, the SafEye was fully operational at all times.
SafEye is built for reliability and continued operation under all types of extreme environmental conditions. This is the field experience, which is demonstrated by the SafEye operational installations, ranging from the very humid and hot Far East to the wet and cold North Sea to the dry and cold slopes of Alaska.
The SafEye, due to its special optics design, provides for a misalignment tolerance of ±1° in all directions and is protected against false gas reading and alarms.
The SafEye unique flash source gives a very powerful radiation signal for a very short time, less than one millisecond at pre-selected intervals. This patented feature enables the detector to address only the high intensity and ultra fast signals that correspond to fast changes in gas concentration, while ignoring all other background radiation.
Used in highly sensitive areas to detect low gas concentration levels to activate alarms measures only when specific hazardous concentration levels are exceeded.
Thousands are installed on offshore platforms, FPSO's, refineries and other onshore applications operated by British Petroleum (BP), Shell, ExxonMobil, Statoil and others.
One system can replace from 5 to 20 point gas detectors in a straight line of sight, up to 460 ft. (140 m). Low cost of ownership, much lower installation cost!
Adjustable light source flash rate gives high sensitivity and extremely fast detection time. Also prevents detector from going into obscuration when a large cloud of gas passes through the beam.
Specially designed to perform under extreme conditions such as high-speed airflows, humidity and corrosive gases where point detectors may not be effective.
High reliability, simple installation, alignment and maintenance, equipment not subject to poisoning.
Standard Interface Options
Standard 4-20 mA outputs or RS-485 output to allow networking (up to 64 detectors) to a central monitoring/PC system.
This feature also enables easy maintenance, local and remote diagnostic tools.
|Detection Range and Response Time||Model No.||202/252||203/253||204/254||226/256||227/257|
|Response Time||2 sec.||5 sec.||5 sec.||5 sec.||5 sec.|
|Detected Gases||C1-C8 flammables by models 202-227, Ethylene by models 252-257|
|Immunity to False Alarm||Not influenced by solar radiation, hydrocarbon flames and other external IR radiation sources|
|Spectral Response||3.0-4.0 μm|
|Sensitivity Range||0-5 LEL.m Standard
0-2 LEL.m by dip-switch setting
|Drift||Long-term ±5% of full scale|
|Temperature Range||-40°F (-40°C) to 131°F (55°C)|
|Power Supply||Standard - 24 VDC (18-32 VDC)|
|Power Consumption||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||Complete electrical interface protection against reversed polarity voltage, surges and spikes according to MIL-STD-1275A|
|Electromagnetic Compatibility||EMI/RFI protected CE Marked|
|4-20mA||The 4-20mA current output is source configuration
Resistance Loop 100-600 Ω
|RS-485||Serial communication for full control with maintenance and trouble shooting facility can be integrated for a network of max 64 detectors|
|Relays||Type||Normal Position||Maximum Ratings|
|Alarm||SPDT||NO, NC||2A at 30VDC or 0.5 at 250 VAC|
|Accessory||SPST||Open||5A at 30VDC or 250VAC|
|Fault||SPST||Closed||5A at 30VDC or 250 VAC|
|Dimensions||5.2" (132mm) x 5.2" (132mm) x max. 11" (280mm)|
|Weight||Al. Encl.||Detector: max 8.8 lb (4 kg)||Source: max 10.8 lb (4.9 kg)|
|St. Encl.||Detector: max 14.3 lb (6.5 kg)||Source: max 16.7 lb (7.6 kg)|
|Mechanical Design||The standard detector housing is heavy-duty, copper-free (less than 1%) aluminum. The housing is finished in white epoxy enamel and is also available in 316L Stainless Steel* upon request.
* Carries an additional charge.
|Environmental Standards||Meets MIL-STD-810C for Humidity, Salt & Fog, Vibration, Mechanical shock, High Temp, Low Temp|
|Water and Dust Tight||IP66 and 67
NEMA 250 6P
|Hazardous Area Approvals|
|ATEX||EX II 2G EExd IIB + H2 T6 (55°C)
EX II 2G EExde IIB + H2 T6 (55°C)
|UL||UL No. - E209870, Class I Groups C and D Hazardous Location|