• UV / Dual IR detector
  • High specification units for critical applications
  • IP66 Housing
  • Flame proof housing
  • Low current consumption
  • 2 Wire, 4 - 20 mA and relay operation
  • Latching and non latching operation
  • High / Low sensitivity setting
  • Remote self test facility
  • Microprocessor controlled
  • Immunity to false sources (arc welding, lightning and static)
  • Conforms to EN54: Part 10

General

The FF756 is a UV / IR2 flame detector in a flame proof housing. UV / IR2 models have execellent response to flame while providing immunity to extraneous sources. New micro-processor technology makes the detectors independent of flame intensity enabling it to operate through smoke, a layer of oil, dust, or water vapor. A high and low sensitivity setting according to EN54-10 is provided.

Installer and maintenance friendly

The units can be wired as conventional 2 wire, 4-20 mA, or relay contacts (fire, fault and pre alarm) in latching or non-latching operation. Remote test inputs are available to activate self-test.

A stainless steel adjustable bracket and weather shield is also available.

The units are tolerant to vibration, and wind does not affect the performance. The IR2 unit has excellent tolerance to detector window contamination and can detect flame through glass windows.

A flame sensor test unit is available for accurate testing of the detectors.

Reducing false alarms

Most IR flame sensors respond to 4.3 m light, emitted by hydrocarbon flames. By responding to 1.0 to 2.7 m light emitted by every fire, all flickering flames can be detected. Gas fires not visible to the naked eye e.g. hydrogen may also be detected.

The combination of UV and IR2 detection, plus signal processing allows the UV / IR2 sensor to be used without risk of false alarms in difficult situations characterised factors such as flickering blackbody radiation or arc welding.

The combination of filters and signal processing allows the sensor to be used without risk of false alarms in difficult situations characterised by factors such as flickering sunlight.

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