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FlameGard 5 UV/IR Flame Detector

The Benefits of HART on Installation and

Maintenance of Flame Detectors

FlameGard 5 UV/IR Flame Detector

The Benefits of HART on Installation and

Maintenance of Flame Detectors

Contents

1. Product Overview2. Principle of Operation3. Spectral Range for Flame Detection4. Field of View5. Detector Placement6. Wiring7. Test Lamp Check8. Fault Conditions9. HART10. Applications11. Conclusion

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

Management’s AMS Intelligent Device Manager Better protection against electromagnetic

emissions

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 m)

Provides warning when both UV and IR sensors respond to a flame

0

5

10

15

20

25

30

Analog Output (mA)

UV IR UV and IR

Spectral Range

Field of View

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.

Wiring

No TB1 Function TB2 Function

1 DATA+ CHAS GND

2 DATA- ALM C

3 RESET ALM 1

4 ALMTEST ALM 2

50-20mA DATA2+

WARN C

6 DATA2- WARN 1

7 +24VDC WARN 2

8 +24VDC FLT C

9 COM FLT 1

10 COM FLT 2

Terminal Block 2 Terminal Block 1

10987654321

Term #

123456789

10

Term #

Test Lamp Check

ModelMaximum Distance to

Detector (ft)

FlameGard 5 UV/IR 20

FlameGard 5 UV/IR-H2 40

Test lamp check allows independent verification of detector’s operation

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

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

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 Output (Standard)

ModbusHART

(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

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

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

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

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