The Crowcon 40/40L-LB is a combination of UV and IR sensors. The IR sensor operates at a wavelength of 2.5-3.0 µm. The Crowcon 40/40L-LB can detect hydrocarbon-based fuel and fires, hydroxyl and hydrogen fires, as well as metal and inorganic fires.
The Crowcon 40/40L-LB 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).
Features
UV/IR Dual-Sensor
Solar blind
Automatic Built-In-Test (BIT) and manual- to assure continued reliable operation (in 40/40LB 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 40/40LB 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:
ATEX & IECEx
FM/FMC/CSA
3rd party performance approved
EN54-10 (VdS)
FM3260
Marine Approval
MED “Wheelmark” approval (DNV).
