MSA FlameGard 5 UV/IR-E User manual

FlameGard® 5
UV/IR-E
Ultraviolet/Infrared
Flame Detector
The information and technical data disclosed in
this document may be used and disseminated
only for the purposes and to the extent
specifically authorized in writing by General
Monitors.
Instruction Manual 09/09
General Monitors reserves the right to change
published specifications and designs without
prior notice.
Part No. MAN5UVIRE-EU
Revision 0

FlameGard 5 UV/IR-E
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Warranty Statement
MSA warrants the FlameGard 5 UV/IR-E to be free from defects in workmanship or
material under normal use and service within two years from the date of shipment.
MSA will repair or replace without charge any such equipment found to be defective during
the warranty period. Full determination of the nature of, and responsibility for, defective or
damaged equipment will be made by MSA’s personnel.
Defective or damaged equipment must be shipped to MSA plant or representative from
which the original shipment was made. In all cases this warranty is limited to the cost of
the equipment supplied by MSA. The customer will assume all liability for the misuse of
this equipment by its employees or other personnel.
The customer will assume all liability for the misuse of this equipment by its employees or
other personnel. All warranties are contingent upon proper use in the application for which
the product was intended and do not cover products which have been modified or repaired
without MSA’ approval or which have been subjected to neglect, accident, improper
installation or application, or on which the original identification marks have been removed
or altered.
Except for the express warranty stated above, MSA disclaims all warranties with regard to
the products sold, including all implied warranties of merchantability and fitness and the
express warranties stated herein are in lieu of all obligations or liabilities on the part of
MSA for damages including, but not limited to, consequential damages arising out of, or in
connection with, the performance of the product.
Warnings
WARNING - Installation and Maintenance must be carried out by suitably skilled and
competent personnel only.

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EC Declaration of Conformity
The manufacturer or his in the community established authorized
representative
MSA AUER GmbH
Thiemannstraße 1
D-12059 Berlin
declares that the product :
MSA AUER FlameGard 5 UV/IR-E
based on the EC-Type Examination Certificates :
SIRA 10 ATEX 1365
complies with the ATEX directive 94/9/EC, Annex III. Quality Assurance
Notification complying with Annex IV of the ATEX Directive 94/9/EC has
been issued by SIRA Certification Service , Notified Body number: 0518.
The product fulfilled the standard EN 54 -10 :2002
The product is in conformance with the directive 2004 / 108/ EC ,(EMC) :
EN 50130-4 : 2002 EN 61000 - 6 - 4 :2007
MSA AUER GmbH
Dr. Axel Schubert
R & D Instruments Berlin , March 2011

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Table of Contents
Page
1.0 Introduction ...................................................................................................... 2
1.1 General Description ........................................................................... 2
1.2 Principle of Operation ........................................................................ 3
2.0 Specifications ...................................................................................................... 6
2.1 System Specifications........................................................................ 6
2.2 Mechanical Specifications.................................................................. 7
2.3 Electrical Specifications .................................................................... 7
2.4 Environmental Specifications............................................................. 8
2.5 Modbus RTU Protocol........................................................................ 8
3.0 Installation ...................................................................................................... 9
3.1 Upon Receipt of Your Equipment ...................................................... 9
3.2 Choosing Detector Locations............................................................. 9
3.3 Detector Installation ......................................................................... 10
3.4 Interconnecting Cable Guidelines.................................................... 11
3.5 Installation Instructions .................................................................... 11
3.6 Terminal Connections ...................................................................... 14
3.7 User Selectable Options .................................................................. 17
3.8 Factory Default Settings................................................................... 19
4.0 Maintenance .................................................................................................... 21
4.1 General Maintenance....................................................................... 21
4.2 Cleaning the Lenses/Light Rod........................................................ 21
4.3 Sensitivity Check.............................................................................. 22
4.4 Storage ............................................................................................ 22
5.0 Trouble Shooting ............................................................................................... 23
5.1 Trouble Shooting Chart.................................................................... 23
6.0 Spares & Accessories ....................................................................................... 24
6.1 Spare Parts ...................................................................................... 24
6.2 Test Lamps ...................................................................................... 24
7.0 Markings, Certificates and Approvals.............................................................. 25
7.1 ATEX................................................................................................ 25
7.2 SIL Parameters ................................................................................ 25
8.0 Modbus Serial Communications ...................................................................... 26

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1.0 Introduction
1.1 General Description
Fire is a phenomenon of combustion. Combustion is the continuous chemical reaction of a
reducing agent (fuel) and an oxidizing agent (oxygen, etc.) with the evolution of thermal
energy (heat). Fire is usually manifested in heat (IR), smoke, light (visible), and flame (UV).
Flame is the gaseous region of a fire where vigorous combustion chain reactions take
place. These reactions emit radiation covering the Infrared, Ultraviolet and the Visible
Spectral Regions.
The MSA FlameGard 5 UV/IR-E is an Ultraviolet/Infrared (UV/IR) Flame Detector. It
detects the Ultraviolet and Infrared spectral regions of the flame to produce a system which
is highly immune to false alarms caused by lightning, arc-welding, hot objects, and other
sources of radiation.
The Models FlameGard 5 UV/IR-E features include:
•Compact unitised design.
•Continuous optical path monitoring.
•Wide field of view.
•High false alarm immunity.
•0-20mA, Relays, Field Loop and Modbus RTU RS-485 serial communications output
versions.
•Visual indicators.
•Stainless Steel body with integral mounting bracket.
•Rated for continuous 90°C operation.

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1.2 Principle of Operation
UV Detector
The Flame Detector contains an ultraviolet phototube that responds to Ultra-Violet (UV)
radiation in the 185 to 260 nanometer region (Figure 2). When radiation from a flame
reaches the cathode plate within the UV detector tube, electrons are ejected from the
cathode plate. These electrons are accelerated towards the positively charged anode of
the tube. They collide with molecules of an ionisable gas, with which the tube is filled. This
emits more electrons and produces an avalanche condition. More electrons are released
which creates a momentary electron flow from the cathode to the anode. This momentary
current (pulse) recurs at a rate proportional to the intensity of the UV radiation.
The Flame Detectors process these UV signals with a microcomputer and, depending on
the version, produces the following outputs:
•0 to 20 milliampere signal.
•Immediate WARN relay contacts.
•Time delayed ALARM relay contacts.
•FAULT relay contacts.
•RS-485 MODBUS RTU serial communications ports.
(See Sections 2 & 3 for more information on detector outputs)

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Figure 2 Spectral Response of UV and IR Detectors
UV/IR Flame Detector
The FlameGard 5 UV/IR-E is a discriminating UV/IR Detector, which makes use of an
ultraviolet radiation sensitive phototube in addition to an infrared detector (see figure 2).
This combination provides a flame detection system, which is highly immune to false
alarms.
The UV portion of the detector, as described in UV Detector, is combined with an infrared
detector, which reacts to changes in the intensity of infrared radiation. By sensing very
specific wavelengths in both the UV and IR spectra and then processing these signals with
a microcomputer, a very high degree of discrimination is achieved.
Incorporated in the IR circuitry is a flicker discrimination circuit. This permits the detector to
ignore steady IR sources such as hot objects. The inherent flickering of flame provides the
necessary modulation to activate the IR circuit.
Since a flame is a copious source of both ultraviolet and infrared radiation, discrimination is
provided when both UV and IR emissions are detected. If only UV is detected, as in the
case of arc welding, no alarm is given. If only IR is detected, such as a large modulating
hot object, no alarm is given. However, if both conditions are met in the correct
combination and intensity, as determined by an algorithm in the microcomputer, a fire is
identified and the alarm outputs are activated.
RelativeEnergy
Ultraviolet Region Visible Region Infrared Region
Sun's Radiation
Reaching the Earth
Wavelength
185nm 260nm 4.35um
IR Detector's
Spectral
SensitivitySensitivity
Spectral
UV Detector's

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COPM Circuitry
A self-testing feature called Continuous Optical Path Monitoring (COPM) checks the optical
path, the detector(s), and the related electronic circuitry once every minute. If foreign
material impairs the optical path of the UV detector tube or infrared detector for two
consecutive checks, the unit will indicate FAULT. The optical FAULT outputs are,
depending on the version, a 2.0 mA signal or de-energizing of the FAULT relay. The
FAULT status is available via the RS-485 serial communications port. (see Section 3-6
Terminal Connections). After a COPM FAULT, a COPM check is performed every ten
seconds until the obstruction is removed. Then the COPM check will resume checking
once per minute check.
WARNING – Dirty or partially blocked windows can significantly reduce the detector’s field
of view and detection distance.
NOTE: Since the optical path is checked once per minute and it requires two check failures
to produce a FAULT, it may take up to two minutes for the unit to detect an obstruction.
Alarm Test
The FlameGard 5 UV/IR-E have a built-in Alarm Test feature. This test may be activated
via the serial communications port (see Section 3-6 Terminal Connections).
The Flame Detectors will immediately go into WARN and then into time delayed ALARM.
After two to ten seconds the Flame Detectors will activate the ALARM. A latching WARN
and/or ALARM will remain latched until reset.
Visual Indicators
Two light emitting diodes (LEDs) are visible through the IR window. LEDs are provided for
a visual indication that corresponds with the detector’s outputs. The following blinking
sequence indicates the operating condition:
•Timeout (10 seconds when the unit is first powered) – Green and red LEDs blinking
alternately.
•Ready – Green LED that flashes off 1 second, every 5 seconds.
•WARNING – Slow blinking red LED.
•ALARM – Fast blinking red LED.
•COPM FAULT – Slow blinking green LED.
•Low Voltage FAULT – Fast blinking green LED.

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2.0 Specifications
2.1 System Specifications
Certification:
Ex d e IIC T4/T5 Gb Ex tb IIIC T135°C/T100°C Db IP6X
Tamb = -40°C to +90°C, -40°C to +75°C
IR Detector centre wavelength:
4.35 microns
UV Detector Pass Band:
185 to 260 nanometres
Typical Alarm Activation Response Times*:
< 3 sec. @ 50 ft. (15.2m)
Minimum Detector Response Times:
< 500 ms.
Field of View*: (Figure 3-A)
120°maximum conical
Sensitivity:
50 feet (15.2m); Maximum distance for a 1 square foot (.092m2) gasoline fire to be
reliably detected.
Maximum Cable Parameters:
4-20mA Output Signal
9000 feet (2750 m), maximum 50 Ohms loop, with maximum 250 Ohms input
impedance of readout unit.
Remote power supply
3000 feet (930 m), maximum 20 Ohms loop and 24 VDC minimum. (See Section
3-4 Terminal Connections)
Approvals:
ATEX & CE Mark, IECEx
Warranty:
Two Years
* NOTE:
1. Response Times and Field of View data have been derived by testing the
FlameGard 5 UV/IR-E with a 1 square foot gasoline fire. One cup of unleaded
gasoline on top of a one inch layer of water was ignited for each test. These are
typical values and different results may occur depending on the variation of each
fire.
2. To meet the directional dependence requirements of EN 54-10 the horizontal
viewing angle must not exceed ±30°.

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2.2 Mechanical Specifications
Enclosure material
Material: Stainless Steel 316
Colour: Natural
Dimensions:
Diameter 3.3 in (8.4 cm)
Length 5.4 in (13.7 cm)
Weight 5lbs (2.3 kg)
Cable Entries: 2 x M20
2.3 Electrical Specifications
Supply voltage range: 20 to 36 VDC
Nominal supply voltage: 24VDC
Maximum supply current: 150 mA
Maximum output signal
Load @ 24 VDC: 600 Ohms
Output signal range: 0 to 20mA
FAULT signal: 0 to 0.2mA
COPM fault signal: 2.0mA ±0.2 mA
Ready signal: 4.0 ±0.2 mA
WARN signal: 16.0 ±0.2 mA
ALARM signal: 20.0 ±0.2 mA
Relay Contact Ratings:
1A MAX @ 30VRMS/42.2 VPK,
Resistive.
RS-485 Serial Communications Port:
Modbus RTU Protocol
128 units MAX. (247 units with repeaters)
Baud Rate: 2400, 4800, 9600 or 19200
RFI/EMI Protection
Complies with EN50270, Type 2
EN55011:1991
EN61000-4-2:1995+A1:1998+A2:2001
EN61000-4-3:1995+A1:1998+A2:200
EN61000-4-4:1995+A1:2001
EN61000-4-5:1995+A1:2001
EN61000-4-6:1996+A1:2001
ENV50204:1995
Status Indicator:
Two LEDs indicate status, fault conditions.

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2.4 Environmental Specifications
Operating temperature range: -40°C to 90°C
-40°F to 194°F
Storage temperature range: -40°C to 90°C
-40°F to 194°F
Humidity range: 0 to 100% RH
non-condensing
2.5 Modbus RTU Protocol
For detailed information on data format, read commands, write commands, register details,
and register locations refer to the Serial Communications section in this manual.

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3.0 Installation
WARNING - Installation and Maintenance must be carried out by suitably skilled and
competent personnel only.
3.1 Upon Receipt of Your Equipment
All items shipped by MSA are packed in shock absorbing containers which afford a
considerable degree of protection against physical damage. When received, the contents
should be carefully removed and checked against the enclosed packing slip. All
subsequent correspondence with MSA must specify the equipment part number and serial
number.
3.2 Choosing Detector Locations
Several variables are involved in selecting the locations in which to install detectors to
ensure proper flame detection. There are no hard and fast rules defining the optimum
location. There are some general suggestions that should be considered in regard to
particular conditions at the site where the unit(s) is being installed:
Detector Field of View
Each FlameGard 5 UV/IR-E Flame Detector has a maximum cone of vision of 120º. This
Cone has its vertex at the center of the detector (see figure 3A-1, 3A-2, and 3A-3).
Optical Sensitivity Range
The distance at which the detector will respond to a flame is a function of the intensity of
that flame. The maximum distance is 50 feet (15.2m) for a gasoline fire with a surface area
of 1 square foot (0.92m2).

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Environmental Factors
1. Mounting should be as free from shock and vibration as possible and convenient for
visual inspection and cleaning.
2. Detectors mounted in dirty atmospheric conditions will require more frequent
inspection, cleaning, and sensitivity checking.
3. Observe the ambient temperature range for the specific model (see section 2-4
Environmental Specifications). For outdoor installations or other areas exposed to
intense, direct solar radiation, the detector may reach temperatures well above
specifications. For this condition, a cover for shade may be required to bring the
detector temperature within specifications. As with any cover or object nearby, make
sure the field-of-view of the detector is not obstructed.
4. Avoid conditions of ice build up on the optical detector windows: complete icing over of
the detector windows can result in fault conditions.
5. Mount away from possible sources of electrical noise.
6. A constant UV source detected by the unit will cause the flame detector to go into
FAULT after 9-10 minutes of exposure. Source must be removed or detector
repositioned. (UV detectors can pick-up arc welding up to 2-3 miles away).
7. Users should be aware that any UV detector may be triggered by other sources of
EMI, for instance X-rays, sunlight, reflected sunlight, Gamma rays, lightning, arc
welding, industrial lighting, fluorescent lighting, etc., and due regard should be paid to
the possible presence of such radiation.
3.3 Detector Installation
The FlameGard 5 UV/IR-E Detector should be mounted tilting downwards so that
dust/moisture will not accumulate on the window. (The detector should be mounted in
locations which will avoid either people or objects from obscuring the detector’s Cone of
Vision.)
Cable glands and stopping plugs should be installed with the o-rings supplied with the
flame detector. It is recommended to fit boots over cable glands to prevent water ingress at
the cable-to-gland junction.
Mounting hardware should be used as shown in figure 3-B. The overall dimensions of the
detector and mounting hardware is also shown.

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3.4 Interconnecting Cable Guidelines
•The flame detector requires an interconnecting cable with an overall screen (shield)
and armour. Cables to BS5308 Part 2, Type 2 or equivalent are suitable.
•Interconnecting cables should be segregated from power and other “noisy” cables.
Avoid proximity to cables associated with radio transmitters, welders, switched mode
power supplies, inverters, battery chargers, ignition systems, generators, switch gear,
arc lights and other high frequency or high power switching process equipment. In
general, maintain a separation of at least 1m between instrument and other cables.
Greater separation is required where long parallel cable runs are unavoidable. Avoid
running instrument cable trenches close to lightning conductors earthing pits.
•Complete all cable insulation tests before connecting the cable at either end.
•MSA do not recommend the use of cable shoes or crimps on any junction box or
housing wiring terminals. Poor crimping can cause bad connection when unit
experiences temperature variations. We therefore recommend that it is good practice
to just terminate the cable.
3.5 Installation Instructions
3.5.1 Cable Termination
•The flame detector should be installed in accordance with the certification
documents and the relevant regulations of the country concerned.
•Ensure that approved Exe cable glands are used and installed according to
the manufacturer’s instructions.
•The cable armour must be terminated in the gland to ensure a positive
electrical connection.
•The cable screens (drain wires) must not be connected electrically to the
electronic circuitry of the flame detector.
•Connect Safety Earth to the chassis grounding screw available on the rear
exterior of the base assembly. This Safety Earth wire should have a wire
gauge of at least 22 AWG (0.33mm2) and be no longer than 3 meters in
length.
3.5.2 Cable Termination in Safe Area
•The cable armour must be connected to Safety Earth.
•The cable screens (drain wire) and power supply return (OV) must be
connected to Instrument Earth.
•The power supply or power distribution system employed should meet the
requirements of EN50081- 1/2 and EN60101-1.

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Figure 3A-1 Horizontal Field of View
Figure 3A-2 Vertical Field of View

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Figure 3-B Outline Drawing

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Figure 3-C Base Assembly with Terminal Block
3.6 Terminal Connections
The Terminal Block is located on the Base Assembly (See figure 3-C) and accepts
12 AWG (3.31 mm2) to 22 AWG (0.33 mm2) stranded or solid core wire. Each wire should
be stripped as shown in figure 3-D.
Figure 3-D Strip Length
Four of the six positions on the terminal block have functions which depend on the
FlameGard 5 UV/IR-E version selected. The remaining two positions are reserved for the
power connections.
Figure 3-C outlines the terminal block connections by version.
On both this and the following pages is a description and specification for each of the
signals shown in figure 3-C.

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POWER INPUTS
+B and 0V
These are the power connections. The supply voltage range is 20 to 36 VDC at the
detector (low voltage is detected at 18.5 VDC). The following maximum cable lengths
apply for a +24VDC supply (maximum 20 ohm loop):
AWG mm2FEET METRES
14 AWG 2.08 4500 1370
16 AWG 1.31 2340 715
18 AWG 0.82 1540 470
20 AWG 0.52 970 300
22 AWG 0.33 670 205
ANALOGUE OUTPUT
4 – 20mA
The 4 to 20mA output is a current signal that corresponds to the following specification:
FAULT signal: 0 to 0.2mA
COPM Fault signal: 2.0 ±0.2mA
Ready signal: 4.0 ±0.2mA
WARN signal: 16.0 ±0.2mA
ALARM signal: 20.0 ±0.2mA
Output Load Max.: 600 ohms
For interfacing with 250 ohm input impedance devices, the following maximum cable
lengths apply (maximum 50 ohm loop):
AWG mm2FEET METRES
14 AWG 2.08 9000 2750
16 AWG 1.31 5800 1770
18 AWG 0.82 3800 1160
20 AWG 0.52 2400 730
22 AWG 0.33 1700 520
COMMUNICATIONS OUTPUTS
DATA 1A
DATA 1B
DATA 2A
DATA 2B
These are the connections for the RS-485 serial communications ports 1 & 2. The RS-485
connection is used to either query the unit’s status or to configure the unit. See Section 7
for detailed information on Modbus RTU protocol.

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RELAY OUTPUT (Figure 3-E)
A1 ALM
Description: This connection is the WARN relay contact. The WARN output is immediate
and can be normally energised or normally de-energised, latching or non-latching.
WARN relay contact rating is 1A @ 30VRMS/42.2VPK Resistive.
A2 ALM
Description: This connection is the ALARM relay contact. The ALARM output is time
delayed for 2, 4, 8 or 10 seconds. The ALARM output can be normally energised or
normally de-energised, latching or non-latching.
ALARM relay contact rating is 1A @ 30VRMS/42.2VPK Resistive.
FAULT
Description: This connection is the FAULT relay contact. The FAULT output configuration
is normally energised and non-latching. This is the standard output configuration and it
cannot be changed. The FAULT circuit will be activated during the time-out function, a low
power or loss of power condition, and during a failed COPM check. During these
conditions the FAULT relay will de-energise and the analogue output signal will drop to
0 mA (2mA for COPM Faults) for the duration of the FAULT.
FAULT relay contact rating is 1A @ 30VRMS/42.2VPK Resistive.
COMM
Description: This is the common connection of the WARN, ALARM and FAULT relay
contacts.
Figure 3-E Relay Outputs

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FIELD LOOP OUTPUTS (Figure 3 – F)
LP+ and LP-
Description: These are the field loop connections to a fire card such as MSA’ IN042.
The FAULT relay, when energised, inserts a 5600ohms, 2Watt End-Of-Line resistor across
these connections.
The ALARM relay, when energised, inserts a 560ohms, 2Watt resistor across the End-Of-
Line resistor. The WARN relay has no effect.
For a description of relay functionality refer to the section RELAY OUTPUTS above.
Figure 3-F Field Loop Outputs
RESET
All versions may be reset by interrupting the power supply for a minimum of two seconds.
Versions with serial communications can also be reset by using the Remote Reset
command. Refer to section 7 for details.
SAFETY EARTH
This connects the flame detector enclosure to Safety Earth. An alternative connection is
available on the rear exterior of the base assembly. The Safety Earth wire should have a
wire gauge of at least 22 AWG (0.33mm2) and be no longer than 3 meters in length.
WARNING: Under no condition should the retaining strap screws be used for
Safety Earth purposes
3.7 User Selectable Options
All user selectable option settings on the FlameGard 5 UV/IR-Eare held in EEPROM. It is
recommended the option settings be specified when ordering.
Versions with serial communications capabilities can be (re)programmed via the
communications port(s). Refer to section 7 for details. Other versions can be
(re)programmed with the Program Card accessory if necessary.
PROGRAM CARD ACCESSORY
The Program Card is a small module with a DIP switch which can be read by the
FlameGard 5 UV/IR-E microprocessor.
DIP switch positions 5 to 8 select the options being programmed, such as Sensitivity and
Alarm-time-delay, Relay or Return to Factory Default settings. DIP switch positions 1 to 4
determine the actual parameter settings. Refer to the following tables for details: