e very l ife h as a p urpose… flamegard 5 msir flame detector
TRANSCRIPT
Agenda
1. Product Overview2. Principle of Operation3. Why Artificial Neural Networks?4. Detector Placement5. Recommended Practices6. Wiring7. Test Lamp Check8. Fault Conditions9. HART10. Applications11. Conclusion
Product Overview
Description Infrared flame detector with neural network technology Customer Benefits Increased range; wide field of view Superior false alarm immunity Stores maintenance, faults, warnings, and alarms records Supports HART and Modbus Compatible with Emerson Process Management’s AMS
Intelligent Device Manager ATEX, CSA, FM, IECEx, and ULC approvals and CE
Marking for worldwide application SIL 3 suitable
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Principle of Operation
Reliably detects fires by using several infrared sensors sampling different IR wavelengthsAnalog signals – Sampled and converted into
digital format for signal pre-processing
Digital signal – Converted from intensity values over time to frequency values over time
A Neural Network algorithm processes values to identify patterns, which allow it to determine if signals are from a flame or non-flame source
Flame detection becomes an exercise of pattern recognition, which is derived from the statistical analysis of data
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Artificial Neural Network
Advantages
Does not depend on developing accurate rules for classifying flames from false alarms
Can improve pattern recognition as detector is “trained” to recognize flame and non-flame events
Development time shifted to computer optimization
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Detector Placement
As with other IR flame detectors, the location of the FlameGard 5 MSIR must 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 an unobstructed line of sight and on rigid mounting points2
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.
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Recommended Practices
Mount units 3 - 5 meters (10 - 15 ft) above the ground
Tilt instrument down to avoid direct sunlight
Reduce instrument sensitivity to medium level (34 m; 110 ft range) in installations where highest range is not needed
Set delay time to 8 seconds or higher (via dip switch) to allow discrimination time between flame and false signal
Configure placement to point detectors in different directions, but cover the same field of view
Implement a voting scheme
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Wiring
No TB1 Function TB2 Function
1 CAL_IO CHGND
2 COM2- GND
3 COM2+ +24 Vin
4 RLY_10 0 – 20 mA
5 ALM 2 COM1-
6 ALM 1 COM1+
7 ALM C TEST_10
8 WARN C FLT C
9 WARN 1 FLT 1
10 WARN 2 FLT 2
1
2
3
4
5
6
7
8
9
10 1
2
3
4
5
6
7
8
9
10
FLT2FLT1FLTCTEST_IO
COM1+COM1-
0-20MA+24INGND
CHGND
WARN2WARN1
WARNC
ALMCALM1
ALM2RLY_IO
COM2+COM2-
CAL_IO
P2
P1
TB2
TB1
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Test Lamp Check
Independently verify operation of the FlameGard 5 MSIR
Using the FlameGard 5 test lamp, self-sensing test lamp mode allows remote testing up to 11 meters
Four ways to conduct a test lamp check:
1. Flashing of the test lamp
2. Momentary grounding of test wire1
3. Modbus command
4. HART command
1 ULC does not approve the grounding of test wire as an option for enabling test mode.
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Regardless of approach used to activate test mode, each time a FlameGard 5 MSIR
successfully detects the test lamp it records a time stamp of the event
Fault Conditions
FlameGard 5 MSIR self-diagnostics informs users when certain types of device failures have occurred
If a fault is detected, the output signal decreases, the fault relay de-energizes, one of these fault codes is displayed:
Bit Position Description
F3 COPM
F4 Low voltage
F6 Data flash checksum
F7 Code flash checksum
F15 Relay reset shorted
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
HART
A configuration of the FlameGard 5 MSIR is available with the HART protocol Provides uniform and
consistent communication for all field devices
Enables continuous, real time access to diagnostic, process, and maintenance data
Because HART requires a minimum current for operation, all fault conditions of the FlameGard 5 MSIR HART configuration use 1.25 mA as analog output value
FunctionCurrent Level (mA)
Analog Output
Modbus HART
Startup 0 to 0.2 0 to 0.2 1.25
Fault 0 to 0.2 0 to 0.2 1.25
Test Mode
1.5 ± 0.2 1.5 ± 0.2 1.25
COPM Fault
2.0 ± 0.2 2.0 ± 0.2 1.25
Ready Signal
4.3 ± 0.2 4.3 ± 0.2 4.3 ± 0.2
Warn 16.0 ± 0.2 16.0 ± 0.2 16.0 ± 0.2
Alarm 20.0 ± 0.2 20.0 ± 0.2 20.0 ± 0.2
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
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 – anywhere in the world
Read fault conditions from control room – before sending technician to the field
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Applications
Well suited for a wide range of applications:Gas compressor stationsPipelinesGas turbine power plantsOil and gas terminalsRefineriesOil and gas storage tanksOil and gas platforms
In general, the FlameGard 5 MSIR may be installed in any facility that is vulnerable to fire due to the hazardous nature of the materials handled
FlameGard 5 MSIR Multi-Spectral IR Flame Detector
Conclusion
Offers significant advantages over many detection instruments in the marketplace Long detection range and wide field of view Immunity to common false alarm sources Event logging Digital communication (HART and Modbus) Worldwide regulatory approvals
Reduces total cost of ownership Because of its large area coverage, reduces the number of
detectors necessary in many applications Enhances management of maintenance, faults, and warning and
alarm records through HART and Modbus With HART, reduces need for new hardwiring
FlameGard 5 MSIR Multi-Spectral IR Flame Detector