General Monitors S4100T H2S Gas Detector
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General Monitors S4100T H2S Gas Detector
This range is obsolete and has been replaced by the FL500.
The General Monitors FL3110 and FL3111 are UV/IR and UV-only flame detectors designed to detect unwanted fires and provide alarm outputs directly from the detector while maintaining false alarm immunity. These detectors complement the existing FL3112 multi-IR detector, completing the “family”.
The FL3110 detects fires by monitoring both ultraviolet (UV) and infrared (IR) spectral ranges, making it highly immune to false alarms caused by lightning, arc welding, hot objects, and other sources of radiation. The FL3111 detects only the ultraviolet (UV) spectral range for optimised speed of response.
The detectors’ electronics are integral within an explosion-proof housing, allowing detector information to be processed at the point of detection. The electronics are fully separated from the Exe wire compartment, offering protection during installation and service.
The FL3110 and FL3111 are available in these output configurations
- 4-20mA stepped output + single serial communications port.
- Dual serial communications ports.
- Warning, alarm and fault relays.
- Alarm & fault relays with on-board EOL and alarm resistor.
- 4-20mA stepped output only.
The serial communication port(s) allow 128 units (247 using repeaters) to be linked to a host computer using the Modbus RTU protocol. The communication registers provide alarm status, fault information, and other data for the operation, troubleshooting, or programming of the unit. The COPM (Continuous Optical Path Monitoring) self-test feature checks optical path integrity (window cleanliness) and the detector’s electronic circuitry once every minute.
Features
- A wide field of view offers greater coverage for detecting fires while using fewer detectors.
- Continuous Optical Path Monitoring (COPM) checks optical path integrity and the detector’s electronic circuitry once every minute.
- Stainless steel construction offers a high level of corrosion resistance, making it suitable for use in marine environments.
Applications
- Refineries
- Drilling and production platforms
- Fuel loading facilities
- Compressor stations
- Electrostatic paint spray booths
- LNG/LPG processing and storage facilities
- Gas turbines
- Chemical plants
- Aircraft hangars
| System Specifications | |
|---|---|
| Wave Lengths | 185 to 260nm (UV) 4.35 microns (IR) |
| Field of View | 120° maximum conical |
| Sensitivity | Approved performance specifications – 50 feet (15.2m) distance for a 1sq. ft. (0.092m2) gasoline fire |
| Typical Response Time | <3 seconds @ 50 ft. (FL3110) <1 seconds @ 50 ft. (FL3111) |
| Minimum Sensor Response Time | UV/IR-FL3110 <500 ms UV-FL3111 <100 ms |
| Accessories | Programming card |
| Classification | EExed – IIC T4 T135 -40ºC to +90ºC (-40ºF to
+194ºF) EExed – IIC T5 T100 -40ºC to +75ºC (-40ºF to +167ºF) IP66/67 |
| Warranty | 2 years |
| Approvals | ATEX and CE Marking Bureau Veritas (FL3110 only) |
| Mechanical Specifications | |
| Housing | Stainless steel |
| Diameter | 84mm (3.3 inches) |
| Length | 136 mm (5.3 inches) |
| Weight | 2.5 kg (5.5 lbs) |
| Cable Entries | 2 x M20 |
| Mounting | Adjustable surface mount bracket included |
| Environmental Specifications | |
| Operating Temperature Range | -40°C to +90°C (-40°F to +194°F) |
| Storage Temperature Range | -40°C to +90°C (-40°F to +194°F) |
| Operating Humidity Range | 0% to 100% RH, non-condensing |
| Electrical Specifications | |
| Input Power | 20-36 VDC 24 VDC @ 150mA max. (3.6w max.) |
| Analog Signal | 4-20mA (600 ohms max.) |
| Fault Signal | 0mA |
| COMP Fault | 2.0mA ± 0.2mA |
| Ready Signal | 4.0mA ± 0.2mA |
| Warn Signal | 16.0mA ± 0.2mA |
| Alarm Signal | 20.0mA ± 0.2mA |
| Relay Contact Rating | 30 VRMS, 42.2 VPK, 1A max |
| Selectable Options | Sensitivity: 100%, 75%, 50% Alarm time delay: 2, 4, 8 or 10 seconds Warn & alarm relays: Latching/non-latching, Energized/de-energized |
| Serial Communications | Modbus RTU, suitable for linking up to 128 units and 247 with repeaters |
| EMC Protection | Complies with EN50270, Type 2 |
| EXE Terminal | 0.75 – 2.5mm² (12-22 AWG) |
| Status Indicators | 2 LEDs with status and fault cues |
| Fault Monitoring | RAM, EPROM and EEPROM checksum errors, optics failure/blockage and low supply voltage |
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