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I.S. IR³ Flame Detector

Product code: 55000-063APO

55000-063APO - I.S. IR³ Flame Detector
The IS IR3 Flame Detector is designed for harsh environments in either indoor or outdoor applications. It is sensitive to low frequnency flickering IR radiation emitted from flames during combustion. The sensor operates even through a layer of oil, dust, water vapour or ice. These detectors have been approved by Baseefa to standards EN50014, EN50020 and EN50284. The requirements of Directive 94/9/EC, the Atmosphere Explosives ATEX directive have also been met.
Full Details

Application Environments

Industrial premises

Warehouses

Electrical Description

The IR³ Flame Detector signals an alarm state by switching an alarm latch on, increasing the current drawn from the supply from 8mA to 28mA and closing the contacts of a Fire relay RL1. These signals from the detector are recognised by the control panel as an alarm signal. The alarm current also illuminates the detector integral red LED. A Fault relay RL2 closes its volt free contacts if the detector has no faults and the supply voltage to the detector is the correct value. To ensure correct operation of the detector the control panel must be arranged to supply a maximum of 30V DC and a minimum of 14V DC in normal operation. To restore the detector to quiescent condition after indicating a fire, it is necessary to extinguish any flames in view and interrupt the electrical supply to the detector for a minimum of one second. Removing the detector front cover provides access to the detector terminals and configuration DIL switch. The detector is normally configured to latch into an alarm state when a flame is in view. The configuration DIL switch within the detector can be set to place the detector into a non-latching mode. The detector can then also produce proportional analogue current alarm signals i.e. 8-28mA or 4-20mA (refer to Table 1). In non-latching mode the detector only produces an alarm signal when a flame is in view resetting itself to normal a few seconds after the flame has gone.

Operation

The Intrinsically Safe (I.S.) Triple Infra-Red (IR³) Flame Detector is designed to protect areas where open flaming fires may be expected. These detectors have high immunity to false alarms. They are sensitive to flickering, low frequency (1 to 15Hz) infra-red (IR) radiation emitted by flames during combustion. They will continue to function under the most difficult of conditions, even if the lens is contaminated by a layer of oil, dust, water, vapour or ice. The detector has three infra-red (IR) sensors which respond to different infra-red (IR) wavelengths in order to discriminate between flames and spurious sources of radiation. They are ideal for indoor or outdoor applications. Most IR flame sensors respond to 4.3μm light, emitted by hydrocarbon flames. By responding to 1.0 to 3.0μm IR emissions from fires almost all flickering flames can be detected. Gas fires not visible to the naked eye, for example hydrogen may also be detected. The I.S. IR³ Flame Detector has three IR sensors that respond to different IR wavelengths in order to discriminate between flames and spurious sources of radiation. False alarms due to such factors as flickering sunlight are avoided by a combination of filters and signal processing techniques.

Application

Flame detectors are used when detection is required to be unaffected by convention currents, draughts or wind; tolerant of fumes, vapours, responsive to a flame more than 25m away and fast reacting. Typical applications examples are: -automotive industry - spray booths, parts manufacture -factory -fuel storage and handling -petro-chemicals -power plants -printing Applications and locations to avoid: -prolonged ambient temperatures above 55°C -sunlight falling directly onto IR3 optics -exposure to severe rain and ice -flicking or moving hot objects -flood or spot lighting falling directly on IR optics -large amounts of flickering reflections -obstructions to field of view

Maintenance & Service

The flame detector is designed to give years of trouble-free operation with minimal attention. However the periodic maintenance steps listed below are essential to maintain reliable fire protection. 1. Inform all appropriate personnel of intention to work on the flame detector. 2. Disable any automatic systems that may be activated by the flame detector if not required as part of the maintenance check. 3. Check that the flame detector’s control panel is functioning correctly and shows no faults. 4. Inspect the detector viewing window for any build-up of dust or other contaminants on the optical surface. If necessary clean the optical surface with a cotton wipe wet with commercial liquid glass cleaner. Rinse with clean water and dry with a clean cloth. The detector specification for performance is with a clean optical sensor window. Contaminants like dust, oil and paint will reduce sensitivity. 5. Ensure the detector still has a clear line of sight of the area it is protecting and no obstacles obstruct its view. 6. Check that the detector is securely fitted. 7. Visually check the exterior of the detector for any mechanical or corrosive damage. 8. Test the operation of the detector with either a portable flame sensor test unit or if practical a flickering yellow flame. 9. Reinstate any automatic system disabled during maintenance. 10. Inform all appropriate personnel on completion of the maintenance work and if necessary record this work.

Additional Information

Accessories A range of accessories and test equipment is available for the IS IR³ Flame Detector: Stainless steel 2-axis adjustable mounting bracket, Part No. 29600-203. Weathershield, Part No. 29600-206, Flame Sensor Test Unit and case, Part No. 29600-226. For a full list of applications for Apollo Flame Detectors, please refer to PP2409, available on request

Product Information

The IS IR3 Flame Detector is designed for harsh environments in either indoor or outdoor applications. It is sensitive to low frequnency flickering IR radiation emitted from flames during combustion. The sensor operates even through a layer of oil, dust, water vapour or ice. These detectors have been approved by Baseefa to standards EN50014, EN50020 and EN50284. The requirements of Directive 94/9/EC, the Atmosphere Explosives ATEX directive have also been met.

Key Features

ATEX & IECEx certified: II 1 G CENELEC/IEC Certified: Ga Ex ia IIC T4 Selectable output options: Conventional two-wire, 4-20mA, Latching or Non-latching, Relay Contacts - Fire/Fault, Pre alarm Class 1 sensitivity to EN 54-10 detects 0.1m2 fire at 25m High optical interference immunity Selectable response speed Optical self test Low power consumption IP65 rated Supply voltage 14 to 30Vdc Operating temperature -10°C to +40°C (T4) Operating temperature -10°C to +55°C

General
Applications
  • Industrial premises
  • Warehouses
Warranty10 year
Performance
Range of view (at 25m)0.1m² n-heptane
Range of view (at 35m)0.2m² n-heptane
Range of view (at 45m)0.4m² n-heptane
Electrical
Supply voltage (min)14V dc
Supply voltage (max)30V dc
Supply voltage (Vmin-Vmax)14 to 30V dc
Environmental
Humidity (min)0% RH
Humidity (max)95% RH
Humidity Noteno condensation or icing
Humidity0% to 95% (no condensation or icing)
Operating temperature (min)-10°C
Operating temperature (max)40°C
Operating temperature-10 to 40°C
Storage temperature (min)-20°C
Storage temperature (max)65°C
Storage temperature-20 to 65°C
Conformance
StandardsEN 54-10
Approvals
  • BASEEFA
  • CPR
  • LPCB
Mechanical
Weight2000g
ColourBlue
Materials housingDie-cast zinc alloy
Product length142mm
Product width108mm
Product depth82mm
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Please email your order to us at: ukorders@apollo-fire.com or tel: 023 9245 6530.

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