|
The SharpEye UV/IR Optical Flame Detectors 20/20L and 20/20LB (which includes a BIT function) are an improved version of the well-proven Spectrex Ultra Violet/Infra Red (UV/IR) optical flame detectors featuring modern microprocessors and detection algorithms that provide excellent detection sensitivity combined with enhanced immunity to false alarms.
These enhanced models were developed in light of our highly successful experience in high-speed flame detection technology for both military and commercial industrial applications.
Both models are designed to detect hydrocarbonbased fuel fires, hydroxy and hydrogen fires as well as metal and inorganic fires. The UV/IR flame detector senses energy in the short wave section of both the ultraviolet and infrared portions of the electromagnetic spectrum. The sensor band pass has been carefully selected to ensure the greatest degree of spectral matching to the radiant energy emissions of fire, and the lowest degree of matching to non-fire stimuli.
The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation.
The IR sensor is sensitive to radiation over the range of 2.5 to 3.0 microns. The signals from both sensors are analyzed for frequency, intensity and duration. Simultaneous matching of radiant energy in both the UV and IR sensors triggers an alarm signal.
Main Features
UV/IR Dual-Sensor Standard 4-wire Connection
High-Speed Response 4-20mA source (3-4 wires) configuration
20 msec Response to Saturated Signal MTBF Minimum 100,000 Hours
User Programmable Configuration 3-Year Warranty
Immune to False Alarms (solar blind) FM, CSA, ATEX/Cenelec & Gost R Approved
Automatic and Manual Built-In-Test (BIT) - LB
Applications
Aerospace Industry - Hydroxy fuels, Hydrogen and Hydrazine fuels Pharmaceutical Industry
Aircraft Hangars - landing gear pits, under-wing Polymers and Glue - manufacturing and curing
and over-wing protection
Automotive - manufacturing, paint spray booths Power Generation Facilities - pump areas, generator
rooms, unmanned stations, gas-fired and
Chemical Industry - production, storage, transportation coal fired reactors
Explosives & Munitions - handling and storage Printing Industry - solvent handling, presses,
drying processes
Paint - manufacturing facilities Warehouses - storage facilities for flammable
materials
Petrochemicals - production, storage, shipping facilities
General Specifications
Spectral Response : UV: 0.185 - 0.260 microns.
IR: 2.5 - 3 microns.
Detection Range Gasoline fire at 50 ft (15m) JP4 fire at 37 ft (11m)
N-Heptane fire at 50 ft (15m) Kerosene fire at 37 ft (11m)
Alcohol 95% fire at 37 ft (11m) Methane* fire at 15 ft (4.5m)
Diesel Fuel fire at 37 ft (11m) Propane* fire at 15 ft (4.5m)
* 0.5m plume fire
Response Time Typical 5 sec.
Adjustable Time Delay Up to 30 sec. (up to 20 sec. in compliance with FM requirements)
Field of View 90° horizontal, 90° vertical
Built-in-Test Manual and Automatic BIT (in model 20/20LB only)
Temperature Range Operating: -40°F (-40°C) to 160°F (70°C)
Operating Option: -40°F (-40°C) to 185°F (85°C)
Storage: -65°F (-55°C) to 185°F (85°C)
Humidity Up to 95%
Electrical Specifications
Power Supply Operating Voltage:18-32 VDC
Power Consumption Max. 100mA in stand-by
Max. 150mA in alarm
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
Relays Alarm - 2A at 30 VDC, 0.5A at 250 VAC
Fault and Accessory - 5A at 30 VDC and 250 VAC
Fault relay normally closed, others normally open
4-20mA Source configuration
Fault: 0 +0.5mA
BIT Fault: 2mA ±10%
Normal: 4mA ±5%
IR Detection: 8mA ±5%
UV Detection: 12mA ±5%
Warning: 16mA ±5%
Alarm: 20mA ±5%
Resistance Loop: 100-600 .
Mechanical Specifications
Dimensions 4.7" x 5.2" x 5.2" (120 x 132 x 132 mm)
Weight Aluminum: 8.1Lb (3.7 Kg)
St.St 316L: 14.3Lb (6.5 Kg)
Enclosure Aluminum, heavy-duty copper free (less than 1%), white epoxy enamel finish.
Optional - Stainless Steel 316L with electro polish finish.
Environmental Standards Meets MIL-STD-810C for Humidity, Salt & Fog, Vibration, Mechanical Shock, High Temp, Low Temp
Water and Dust IP66 and IP67 per En60529
NEMA 250 6P
Hazardous Area approvals
ATEX / Cenelec EX II 2G, EExd IIB + H2 T5 (70°C) ,T4 (85°C)
EX II 2G, EExde IIB + H2 T5 (70°C)
FM / CSA Class I Div. 1, Groups B, C & D
Class II Div. 1, Groups E, F & G
GOST R 1ExdIIBT5/H2
Accessories
Fire Simulator 20/20-311
Swivel Mount 20/20-003 (St. St. 316L)
Specifications subject to changes
For more information view manual or website www.spectrex-inc.com
DS-F-UV/IR, November 2003
| 