The SafEye 300 Duct Open Path Detectors monitor ingress of hazardous flammable gas concentrations into air intakes of turbine engines and HVAC air ducts. Duct applications require that the small path across an air inlet responds with a very high sensitivity, full scale of 1 LEL.m for 2-6.6ft (0.6-2m) wide inlet and full scale of 2.5 LEL.m for 6.6-23ft (2-7m) wide inlet.
Features
High Sensitivity
- Alarm up to 0.5 LEL.m
- 5 times more sensitive than the normal Open Path equipment
Fast Response
- Fast response time of typically 2 sec., max. 5 sec.
- 5 to 10 times faster than the commonly used Open Path detector and 20-50 times faster than the Point Detector.
Low Maintenance
High reliability, simple installation, alignment, and maintenance, equipment not subject to poisoning.
Proven Technology
Used in air ducts on FPSO’s and offshore rigs for British Petroleum (BP), Shell, and ABB Lummus for turbines, air intakes, etc.
Harsh Environment
Specially designed to perform under extreme conditions such as high-speed airflows, high temperatures (up to 185˚F (85˚ C)), humidity, and corrosive gases, where point detectors may not be effective.
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 and local and remote diagnostic tools.
Typical Applications
Offshore Oil & Gas Rigs and FPSOs; Onshore Oil & Gas Terminals; Storage Farms and Filling Stations; Petrochemical and Chemical Industries; Power Utilities and Turbines areas; Automotive, Painting, Printing, Pharmaceutical Industries, and many more.
Specific applications include:
- HVAC ducts (Heating Ventilation Air Conditioning) in accommodations areas
- Air ducts in process areas
- Stacks and exhaust towers
- Compressors and generators enclosures
- Curing ovens and drying equipment, printing equipment
- Engine & Turbine air intake and exhaust
- Air intake to safety enclosures
- Paint-booths and paint production and drying processes
- Air ventilation shafts
Specifications
General Specifications
| Detected Gases | Simultaneous detection of C1-C8 flammable gases | ||||||
| Detection Range and Response Time |
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| Immunity to False Alarm | Not influenced by solar radiation, hydrocarbon flames, other external IR radiation sources, high airflows and high loaded streams | ||||||
| Spectral Response | 3.0-4.0 µm | ||||||
| Sensitivity Range | 0-2.5 LEL.m Standard; 0-1 LEL.m by software | ||||||
| Misalignment Tolerance | ±2˚ | ||||||
| Drift | Long-term ±5% of full scale | ||||||
| Temperature Range | -40˚F (-40˚C) to 185˚F (85˚ C) |
Electrical Specifications
| Power Supply | 24 VDC (18-32 VDC) | ||||
| Power Consumption |
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| Electrical Connection | 2 x 3/4” – 14NPT conduits | ||||
| Electrical Input Protection | According to MIL-STD-1275B | ||||
| Electromagnetic Compatibility | EMI/RFI protected CE Marked |
Outputs
| 0-20mA Sink (source option) configuration |
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| HART Protocol | HART communications on the 0-20mA analog current (FSK)- used for maintenance, configuration changes and asset management | ||||||||||||||||
| RS-485 | The RS-485 input/output provides complete data information to a PC and receives control commands from the PC or handheld unit | ||||||||||||||||
| Relays |
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Mechanical Specifications
| Dimensions | 5.2″ (132mm) x 5.2″ (132mm) x max. 4.7″ (120mm) | |||
| Weight |
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| Mechanical Design | The standard detector housing is heavy-duty, copper-free (less than 1%) aluminum. The housing is finished in white epoxy enamel | |||
| Environmental Standards | Designed to meet MIL-STD-810C for Humidity, Salt & Fog, Vibration, Mechanical shock, High Temp, Low Temp | |||
| Water and Dust Tight | IP66 and 67 per EN60529 NEMA 250 6P |
Hazardous Area Approvals
| FM | Class I, Division 1, Groups B, C and D, Dust Ignition proof for Class II, Division 1, Groups E, F and G. Performance per Class no. 6325 |
| Reliability | SIL2 per IEC61508 (TUV) |
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