UV/IR Flame Detector 3600-LB

Sierra Monitor’s 3600-LB flame detector monitors hydrocarbon-based fuel and gas fires, hydroxyl and hydrogen fires, as well as metal and inorganic fires.

The 3600-LB uses a combination of ultraviolet (UV) and infrared(IR) sensor technology. The UV/IR flame detector senses radiant energy in the short wave sections of both the ultraviolet and infrared portions of the electromagnetic spectrum. The signals from both sensors are analyzed for frequency, intensity, and duration. Simultaneous detection of radiant energy in both the UV and IR sensors triggers an alarm signal.

With the UV/IR Dual Sensor, the 3600-LB can better recognize different types of flame signatures, leading to fewer false alarms. In addition, the UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation. The 3600-LB also has a response time as fast as 150 milliseconds. Other features include a heated window to eliminate condensation and icing, HART and Modbus capabilities for digital communications, low power requirements, and a compact design.

The UV/IR Flame Detector 3600-LB is approved and certified by a variety of third party agencies, including FM, ATEX, IECEx, TUV, and CSA. These approvals and certifications assure our customers that we carry only the highest quality of products and performance.

UV/IR Flame Detector 3600-LB

  • UV/IR Dual-Sensor – Simultaneously detect UV and IR signatures for maximum accuracy and reliability
  • High-Speed Response – Detect flames with speeds as fast as 150 milliseconds
  • Heated Window – Eliminate any possible condensation or icing to ensure the detector to function properly
  • Low Power Requirements – Save energy costs while protecting the facility
  • Multiple Output Options (Relay Outputs, 0-20 mA, HART, Modbus RS-485) - Easily install in a variety of field applications and easily obtain critical safety information wherever needed with maximum flexibility and compatibility

Specifications for UV/IR Flame Detector 3600-LB

Model Number

  • 3600-LB

Spectral Response

  • 3600-L-LB:
    • UV: 0.185 - 0.260 micron
    • IR: 2.5 - 3.0 micron
  • 3600-L4-L4B:
    • UV:0.185 - 0.260 micron
    • IR: 4.4 - 4.6 micron

Detection Range

(At highest Sensitivity Setting for 1 sq. ft. / 0.1 sq. m pan fire)

50 ft. (15 m) n-Heptane
50 ft. (15 m)
Gasoline
37 ft. (11 m)
Diesel Fuel
37 ft. (1 m) JP5
16 ft. (5 m) Hydrogen**
37 ft. (11 m) Kerosene
25 ft. (7.5 m)
Ethanol 95%
25 ft. (7.5 m) Methanol
25 ft. (7.5 m) IPA (Isopropyl Alcohol)
16 ft. (5 m) Methane*
16 ft. (5 m) LPG*
13 ft. (4 m)
Polypropylene Pellets
16 ft. (5 m) Office Paper

*20” (0.5 m) high, 8” (0.2 m) with plume fire

**3600-L/LB only

Response Time

  • Typically 5 seconds. High speed 150 msec response to saturated signal

Adjustable Time Delay

  • Up to 30 seconds

Sensitive Range

  • 1 sq. ft. (0.1 sq. m) n-heptane pan fire from 50 ft. (15 m)

Field of View

  • 100o Horizontal, 95o Vertical

Built-in-Test (BIT)

  • Manual and Automatic

Temperature Range

  • Operating: -67oF to 167oF (-55oC to 75oC)
  • Operating Option: -67oF to 185oF (-55oC to 85oC)
  • Storage: -67oF to 187oF (-55oC to 85oC)

Humidity

  • Up to 95% non-condensing (withstands up to 100% RH for short periods)

Heated Options

  • To eliminate condensation and icing on the window

Electrical Specifications

  • Operating Voltage: 24 VDC nominal (18-32 VDC)
  • Power Consumption:
    • Standby: Max. 90 mA (110 mA with heated window)
    • Alarm: Max. 130 mA (160 mA with heated window)
  • Cable Entries: 2 x ¾” - 14 NPT conduits or 2 x M25 x 1.5 mm ISO
  • Wiring: 12 - 22 AWG (2.5 mm2 - 0.3mm 2)
  • Electrical Input Protection: According to MIL-STD-1275B
  • Electromagnetic Compatibility: EMI/RFI protected to EN61326-3 and EN61000-6-3
  • Electrical Interface: The detector includes twelve (12) terminals with five (5) wiring options (factory set)

Outputs

  • Relays:
    • Alarm, Fault, and Auxiliary
    • SPST volt-free contacts rated 5A at 30 VDC or 250 VAC
  • 4-20 mA (stepped)
    • Sink (source option) configuration
      • Fault: 0 + 1 mA
      • IR: 8 mA +/- 5%
      • UV: 12 mA +/- 5%
      • Warning: 16 mA +/- 5%
      • BIT Fault: 2 mA +/- 10%
      • Alarm: 20 mA +/- 5%
      • Normal: 4 mA +/- 10%
      • Resistance Loop: 100-600 ohms
  • HART Protocol: Optional HART communication on the 0-20 mA analog current (FSK) – used for maintenance, configuration changes and asset management, available in mA source output wiring options
  • RS-485: RS-485 MODBUS compatible communication link that can be used in computer control installations

Mechanical Specifications

  • Materials/Enclosure Options:
    • Heavy-duty copper free aluminum (less than 1%), red epoxy enamel finish (ATEX Approval only)
    • Stainless Steel 316L with electro polish finish (FM or ATEX Approval)
  • Mounting: Stainless Steel 316L with electro polish finish
  • Dimensions:
    • Detector: 4” x 4.6” x 6.18” (101.6 x 117 x 157 mm)
  • Weight
    • Aluminum: 2.8 lb. (1.3 Kg)
    • Stainless Steel 316L: 6.1 lb. (2.8 Kg)
    • Tilt Mount: 2.2 lb. (1.0 Kg)
  • 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

Approvals

  • Hazardous Area
    • ATEX & IECEx
      • Ex II 2 GD
      • Ex de IIB + H2 T5 (-55o to 75oC)
      • Ex de IIB + H2 T4 (-55o to 85oC)
      • Ex tD A21 IP66/X7 T 95oC
      • Ex tD A21 IP66/X7 T 105oC
    • FM/CSA
      • Class I Div. 1, Groups, B, C & D
      • Class II/III Div. 1, Groups E, F & G
  • Performance
    • EN54-10 (LPCB)
    • FM-3260 (FM)
  • Reliability
    • IEC61508 – SIL-2 (TUV)
    • PDO Approval: Petroleum Development Oman Certificate of Registration
    • ISO 9001:2008: Registered Quality System

Accessories

  • Fire Simulator: 20/20-311
  • Tilt Mount: 3600-01
  • Weather Protector: 777163
  • Air Shield: 777650
  • Mini Laptop Kit: 777820
  • USB RS-485 Harness Kit: 794079-5
  • Laser Pointer (Detector Area Coverage): 777166

How to Purchase the UV/IR Flame Detector

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