FlameGard 5 UV/IR Flame Detector The Benefits of HART on Installation and Maintenance of Flame Detectors

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FlameGard 5 UV/IR Flame DetectorThe Benefits of
HART on Installation and Maintenance of Flame
Detectors
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Contents

1. Product Overview
2. Principle of Operation
3. Spectral Range for Flame Detection
4. Field of View
5. Detector Placement
6. Wiring
7. Test Lamp Check
8. Fault Conditions
9. HART
10. Applications
11. Conclusion

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FlameGard 5 UV/IR Flame Detector

• Description
• HART enabled flame detector with ultraviolet and
  infrared sensors
• Customer Benefits
• Features wide field of view, enhanced false alarm
  response, COPM, and broad temperature range
• Stores time-stamped records of warnings, alarms,
  and maintenance events
• Supports HART communication
• Compatible with Emerson Process Managements AMS
  Intelligent Device Manager
• Better protection against electromagnetic
  emissions

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Principle of Operation

• Measures the radiant intensity of light and
  fluctuations of radiant intensity to detect a
  flame
• Monitors spectral range in ultraviolet (185 260
  nm) and infrared (4.35 mm)
• Provides warning when both UV and IR sensors
  respond to a flame

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Spectral Range
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Field of View
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Detector Placement

• As with other flame detectors, allocation of the
  FlameGard 5 UV/IR should be considered
  carefully
• Place detector so field of view covers areas
  where fires may occur1
• Locate detectors at the corners of an area or
  module1
• Employ CAD tools to optimize area coverage at the
  design stage1
• Install detectors on the perimeter of equipment
  under detection, with unobstructed lines of
  sight and on rigid mounting points2
• Determine maximum distance from detector to item
  or area to be covered after considering fire
  size, fuel type, and desensitizing effects from
  environmental conditions3

1 HSE Hazardous Installations Directorate,
Offshore Division, Fire and Explosion Strategy,
Issue 1. 2 HSSE Fire Protection Design
Philosophy, British Petroleum, Document No.
OCC-IPMT-PR-HSSE-00004, Rev 0. 3 Guidance and
Practice for Fire and Gas Detection, British
Petroleum, GP 30-85, 29 January 2003.
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Wiring
No TB1 Function TB2 Function
1 DATA CHAS GND
2 DATA- ALM C
3 RESET ALM 1
4 ALMTEST ALM 2
5 0-20mA DATA2 WARN C
6 DATA2- WARN 1
7 24VDC WARN 2
8 24VDC FLT C
9 COM FLT 1
10 COM FLT 2
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Test Lamp Check

• Test lamp check allows independent verification
  of detectors operation

Model Maximum Distance to Detector (ft)
FlameGard 5 UV/IR 20
FlameGard 5 UV/IR-H2 40
Regardless of approach used to activate test
mode, each time a FlameGard 5 UV/IR successfully
detects the test lamp, it records a time stamp
of the event
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Fault Conditions

• Self-diagnostics show specific device failures

Bit Position Description
High 8 Reset Line Shorted
High 7 UV 10 Minute
High 4 Output Current Fault
Low 8 Flash Checksum
Low 7 EEPROM Checksum
Low 6 RAM Test
Low 5 Low Line Voltage Check
Low 4 UV COPM
Low 3 IR COPM
Low 1 Internal Voltage
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HART

• Configuration available with HART protocol
• Provides uniform and consistent communication for
  all field devices
• Continuous, real time diagnostic, process, and
  maintenance data

Function Analog Current (mA) Analog Current (mA) Analog Current (mA) Analog Current (mA)
Function Analog Output (Standard) Modbus HART(Default) HART-modified Analog Output
Startup 0 to 0.2 0 to 0.2 3.5 0.1 1.25 0.1
Fault 0 to 0.2 0 to 0.2 3.5 0.1 1.25 0.1
COPM Fault 2.0 0.1 2.0 0.1 3.5 0.1 2.0 0.1
Ready Signal 4.05 0.05 4.05 0.05 4.05 0.05 4.05 0.05
IR 8.0 0.1 8.0 0.1 8.0 0.1 8.0 0.1
UV 12.0 0.1 12.0 0.1 12.0 0.1 12.0 0.1
Warn 16.0 0.1 16.0 0.1 16.0 0.1 16.0 0.1
Alarm 20.0 0.1 20.0 0.1 20.0 0.1 20.0 0.1
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Uses of HART and Modbus

• Asset management and process improvement
• Check compliance to maintenance schedule
• Coordinate test lamp checks to reduce labor cost
• Aggregate maintenance to a control room
• Read fault conditions from control room before
  sending technician to the field

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Applications

• The FlameGard 5 UV/IR is suited for a wide range
  of applications
• Gas Compressor Stations
• Pipelines
• Gas Turbine Power Plants
• Oil and Gas Terminals
• Refineries
• Oil and Gas Storage Tanks
• Oil and Gas Platforms

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Conclusion

• FlameGard 5 UV/IR Flame Detector offers
  significant advantages over many detection
  instruments
• Long detection range and wide field of view
• Event logging
• Digital communication (HART and Modbus)
• FlameGard 5 UV/IR reduces total cost of ownership
• Enhances management of maintenance, faults, and
  warning and alarm records through HART Modbus
• HART reduces need for new hardwiring

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Conclusion

• HART and Modbus communication allow users to get
  the full benefit from the FlameGard 5 UV/IR Flame
  Detector
• Real time device diagnostics enable proactive
  action to avoid process disruptions and
  unplanned shutdowns
• Digital communication ensures that device
  information can be linked remotely to other
  digital networks
• Advanced diagnostics help increase safety
  integrity levels
• When connected to plant asset management
  software, digital communication protocols enable
  greater operations efficiencies