Crowcon 40/40L4-L4B UV/IR Flame Detector

The Crowcon 40/40L4-L4B is identical to the 40/40L-LB, except that the wavelength of the IR sensor works at 4.5 µm and is only suitable for hydrocarbon-based fuel and gas fires. The Crowcon 40/40L4-L4B UV/IR Flame Detector can sense radiant energy in the short wave section of both the UV and IR portions of the electromagnetic spectrum. Both sensors have signals that are analysed for frequency, intensity and duration. Simultaneous detection of radiant energy in both the UV and IR sensors will trigger an alarm signal.

The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation. The 40/40 Series is approved to IEC 61508 Safety Integrity requirements of SIL2 (TUV).

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UV/IR Dual-Sensor
Solar blind
Automatic and manual Built-In-Test (BIT) and Manual- to assure continued reliable operation (in 40/40L4B only)
Heated window - for operation in harsh weather conditions (snow, ice, condensation)
Multiple output options for maximum flexibility and compatibility
Relays (3) for Alarm, fault and auxiliary
0-20mA (stepped)
HART protocol for maintenance and asset management
RS-485, modbus compatible
High reliability - MTBF - minimum 150,000 hours
Approved to Safety Integrity Level 2 (SIL2 - TUV) - Model 40/40L4B only
5-year warranty
User programmable via HART or RS-485.

Hazardous area zones:
Zones 1 & 2 with IIC gas group vapors present
Zones 21 & 22 with IIIC dust type present.

Ex approved to:
3rd party Performance Approved
EN54-10 (VdS)
Marine Approval
MED "Wheelmark" approval (DNV).
The Crowcon 40/40L4-L4B UV/IR Flame Detector.