Flame Detection Theory by 2SIL1M

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									 Flame
Detection
 Theory


            EVERY LIFE HAS A PURPOSE…
Requirements of a Fire




Oxygen
                    Characteristics of a Fire

 High Emissions of Ultraviolet Radiation

 High Emissions of Infrared Radiation

 Presence of Light, Smoke and Airborne Debris
                    False Alarm Sources

 Arc Welding

 Sunlight

 Infrared Energy

 Modulation

 Reflective
                           Characteristics of a Fire

           Ultraviolet Region            Visible Region      Infrared Region




Relative
Energy
                                          Sun’s radiation
                                        reaching the Earth




                                                              microns
                                400nm




                                                               2 to 3
                                          Wavelength
                                  UV Phototube

           Ultraviolet Region            Visible Region      Infrared Region




Relative
Energy
                                          Sun’s radiation
                                        reaching the Earth




                                                              microns
                                400nm




                                                               2 to 3
               UV Phototube
                           Ultraviolet
                           Radiation




Photocathode                      Anode
               Electrons



                                          Gas-Filled
                                          Phototube
          -
       VDC
         +
                           IR Devices

           Ultraviolet Region            Visible Region      Infrared Region




Relative
Energy
                                          Sun’s radiation
                                        reaching the Earth




                                                              microns
                                400nm




                                                               2 to 3
                                          Wavelength
                           IR Devices

           Ultraviolet Region            Visible Region      Infrared Region

                                                                               Hydrogen fires
                                                                               emit H2O vapors
                                                                               @ 2.95 microns



Relative
Energy
                                          Sun’s radiation
                                400nm   reaching the Earth




                                                              2.7 to 3 .2
                                                               microns
                                          Wavelength
                                FlameGard 5 UV/IR


FlameGard 5 UV/IR

Ultraviolet + Infrared Detection
Photo-tube + Pyroelectric (Flicker)
      FlameGard 5 UV/IR Features

   Monitors in both UV and IR spectral ranges
    reducing possibility of false alarms caused by
    lightning, arc welding, hot objects etc.
   Typical Response time: < 3 seconds @ 50ft
   120° maximum horizontal field of view
   -40°F to +185°F (-40°C to +85°C) operating
    temperature
   COPM (Continuous Optical Path Monitoring)
   RS-485 Modbus RTU, HART
   Hydrogen fire configuration available
                          FlameGard 5 UV/IR
                          Physical Characteristics

Assembly
   Three Distinct Explosion-proof Housings:
      UV/IR
      COPM Light Rods (Reflective Coated)
         UV - Straight
         IR - Curved
      O-Ring Sealed Windows
   Common Base with Bracket Mounting Holes
      Two (2) Bottom Entry Conduit Connections (3/4” NPT)
      “Drip Lip” (3/4 of housing mating surface)
                          FlameGard 5 UV/IR Specifications


 Environmental
   Temperature
      FlameGard 5 UV/IR     -40°C to 85°C (-40°F to 185°F)


   Ratings
      IP 66, Type 4X, Class I, Div 1, Groups B, C & D;
       Class II, Groups E, F & G; Class III
                              FlameGard 5 UV/IR Specifications


 Performance
   Improved detection and false alarm immunity
   Field-of-View
      FlameGard 5 UV/IR - 115° Vertical, 120° Horizontal

   Optical Sensitivity
      1 sq. ft. fire at 50 ft.
                                                 FlameGard 5 UV/IR Field of View
                                                 (Horizontal)
                                                 15°      0°         15°
                                                          50'
                                           30°            45'               30°
                                                          40'
                                     45°                                                45°
        75%                                               35'
                                                          30'
                               60°                        25'                                 60°
       100%                                               20'
                                                          15'
                                                          10'
         50%


                                       (±5°)                                TABLE CHART
                                     HORIZONTAL                 HORIZONTAL        100%        75%    50%

                                                                0°                50'         50'    25'
                                           SENSITIVITY
                                                                ±15°              50'         50'    15'
                                                  100%
                                                  75%           ±30°              50'         50'    <5'

                                                  50%           ±45°              50'         30'    <5'

                                                                ±60°              25'         <20'   <5'



                        +60°

                 +45°
                                                       SENSITIVITY
                                                                                              TABLE CHART
                                                                     100%
100%                                                                         VERTICAL                100%   75%   50%
          +30°                                                       75%
                                                            (±5°)                              TABLE CHART
                                                          HORIZONTAL              HORIZONTAL         100%   75%     50%

                                                                                   0°                50'    50'     25'
                                                                    SENSITIVITY
                                                                        FlameGard 5 UV/IR Field of View
                                                                           100%    ±15°              50'    50'     15'


                                                                        (Vertical)
                                                                           75%
                                                                           50%
                                                                                   ±30°

                                                                                   ±45°
                                                                                                     50'

                                                                                                     50'
                                                                                                            50'

                                                                                                            30'
                                                                                                                    <5'

                                                                                                                    <5'

                                                                                   ±60°              25'    <20'    <5'



                                       +60°

                          +45°
                                                                            SENSITIVITY
                                                                                                            TABLE CHART
                                                                                        100%
100%                                                                                            VERTICAL           100%   75%    50%
                  +30°                                                                  75%
                                                                                                0°                 50'    50'    25'
                                                                                        50%
                                                                                                ±15°               50'    50'    25'
       +15°
75%
                                                                                                ±30°               50'    50'    25'

                                                                                                ±45°               50'    30'    <20'
                   45'


                                35'
            50'




                                      30'
                                            25'



                                                        15'
                         40'




                                                  20'


                                                              10'




       0°                                                                     (±5°)
                                                                                                ±60°               20'    <20'   <20'
50%                                                                          VERTICAL

       -15°



              -30°


                         -45°


                                      -60°
                                FlameGard 5 UV/IR Specifications


   Performance

      Spectral Sensitivity
          FlameGard 5 UV/IR:       185 to 260 nanometers & 4.35 microns

   Response Time (Normal Operation


                                             FlameGard 5 UV/IR
          Detector Response (nominal)              < 500ms

          Output Response (50 ft. fire)             < 3sec.
                           FlameGard 5 UV/IR Specifications


 Outputs
   4-20 mA Signal
        0 mA, Fault
        2 mA, COPM Fault
        4 mA, Ready
        8 mA, IR Only
        12 mA, UV Only
        16 mA, Warn
        20 mA, Alarm (After time delay)
                              FlameGard 5 UV/IR Specifications


 Outputs
   Commands
      Read Only
            4-20 mA
            Alarm, Warning, Fault
            UV Only Signal, IR Only Signal
            UV Source Lamp Fault, IR Source Lamp Fault
            Low Voltage
            Communication Faults
      Write Only
          Auto Test, Reset, Accept
      Read and Write
          Address, Modbus Setup
          Sensitivity (100%, 75%, 50%)
          Time Delay, Relay States
                           FlameGard 5 UV/IR Specifications


 Outputs
   Relays: (3) SPDT (8-amp, 24 VDC/250 VAC
    Resistive)
      Warning (Immediate, no time delay)
      Alarm (After 2, 4, 8 or 10 Sec. Time Delay)
          Dip Switch Selectable
          RS-485 Selectable (Non-intrusive over-ride)
      Fault (Energized, non-latching )
                                    FlameGard 5 UV/IR Specifications

 System
    Modes:
        Normal
        Self Test (Power-up)
        Alarm Test (Remote)
    Fault Diagnostic -Status Indication (LED)
        RED LED     GREEN LED                     CONDITION
             ALTERNATING              TIME OUT – 10 SECONDS AFTER START-UP

          OFF       10 SEC. BLINK     READY – NO FLAME RADIATION PRESENT
       SLOW BLINK          ON           WARN – FLAME RADIATION PRESENT
       FAST BLINK          ON              ALARM – WARN +TIME DELAY
          OFF        SLOW BLINK           FAULT –COPM FAULT DETECTED
          OFF        FAST BLINK         FAULT – LOW VOLTAGE CONDITION

    Other Fault Diagnostics via RS-485
                     FlameGard 5 UV/IR Specifications


 Approvals
   CSA, FM, ATEX, CE Marking

 Power
   20-36 VDC Nominal @ 150 mA Max.

 Input Terminals
   Test and Reset
   Wiring: 12 AWG to 22 AWG
FlameGard 5 Test Lamp

     Rechargeable/replaceable
      batteries
     Easy grip handle integral
      with housing
     Spring return on/off
      switch to conserve
      battery life
     Explosion-proof cast
      aluminum housing
     CSA Approved
     ATEX Approved
                       Key Features / Benefits

 Excellent Discrimination of False Alarms
   UV detection in the 185-260 nanometer range which
    is well below natural sunlight and artificial light.
   IR detection at 4.3 microns which is the CO2 spike
    generated from hydrocarbon fires.

   Flicker discrimination algorithm, which eliminates
    false alarms from IR sources.
   Arc welding and lightning will not cause the
    FlameGard UV/IR to go to false alarm.
                       Key Features / Benefits

 “COPM” Continuous Optical Path Monitoring
   We check the optical path once every minute on both
    the UV and IR sides to make sure the windows are
    not dirty, and that the test sources and detectors are
    working properly.


 Wide Angle of View
   120° angle of view is the widest in the industry which
    allows for a larger area of coverage and a reduced
    number of detectors.
                                Key Features / Benefits

 Hydrogen Fire Specific Flame Detector
    Uses a wavelength of 2.7-3.2 microns on
     the IR detector to detect the water spike of
     Hydrogen fires.

 Output Capability
    Three programmable relays (8 AMP)
    0-20 mA stepped output to allow quick
     diagnostics for UV only, IR only, COPM
     Fault and overall Failures
    Modbus for digital communication
    HART------Digital Communication protocol.
     Communicates via analog output line.

								
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