MSA FlameGard 5 UV/IR-E Instruction 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

i

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.

FlameGard 5 UV/IR-E

ii

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

FlameGard 5 UV/IR-E

1

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

FlameGard 5 UV/IR-E

2

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.

FlameGard 5 UV/IR-E

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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)

FlameGard 5 UV/IR-E

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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.

R

e

l

a

t

i

v

e

E

n

e

r

g

y

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

FlameGard 5 UV/IR-E

5

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°.

FlameGard 5 UV/IR-E

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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.

FlameGard 5 UV/IR-E

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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.

FlameGard 5 UV/IR-E

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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 (0.92m

2

).

FlameGard 5 UV/IR-E

10

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 (0.33mm

2

) 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.

FlameGard 5 UV/IR-E

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Figure 3A-1 Horizontal Field of View

Figure 3A-2 Vertical Field of View

FlameGard 5 UV/IR-E

13

Figure 3-B Outline Drawing

FlameGard 5 UV/IR-E

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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.

FlameGard 5 UV/IR-E

15

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 mm2 FEET 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 mm2 FEET 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.

FlameGard 5 UV/IR-E

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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

FlameGard 5 UV/IR-E

17

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-Of­Line 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 (0.33mm

2

) 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:

FlameGard 5 UV/IR-E

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SENSITIVITY and ALARM-TIME-DELAY Options

Sensitivity (%) Alarm-time-delay (sec)
DIP 100 75 50 10 2 4 8
1

OFF OFF ON ON

2

OFF ON OFF ON

3

OFF OFF ON

4

OFF ON OFF

5

OFF OFF OFF OFF OFF OFF OFF

6

OFF OFF OFF OFF OFF OFF OFF

7

ON ON ON ON ON ON ON

8

ON ON ON ON ON ON ON

WARN and ALARM Relay Options

WARN (1) Relay ALARM (2) Relay
DIP LA NL EN DE LA NL EN DE
1

ON OFF

2

ON OFF

3

ON OFF

4

ON OFF

5

OFF OFF OFF OFF OFF OFF OFF OFF

6

OFF OFF OFF OFF OFF OFF OFF OFF

7

OFF OFF OFF OFF OFF OFF OFF OFF

8

ON ON ON ON ON ON ON ON

LA = Latching NL = Non Latching
EN = Energised DE = De-Energised

The above options have been represented pictorially on the label attached to the Program
Card

Return to FACTORY DEFAULT settings

DIP Default

5

ON

6

ON

7

OFF

8

ON

DIP switch positions 1 to 4 are not relevant here

WARNING: During the following steps proper anti-static procedures must
be observed. Failure to do so may permanently damage the electronic
circuits and void the warranty.

FlameGard 5 UV/IR-E

19

To (re)program, remove the detector from the Base Assembly, disconnect the fly-lead and
disconnect the retainer strap at the rear of the Base only

.

1. Refer to figure 3-G and remove the five screws securing the front cap assembly to the
enclosure.

2. Remove the front cap assembly.

3. Disconnect the fly-lead connector from the power supply board.

4. Insert the Program Card with the required DIP switch settings into connector J3 on the

microprocessor board.

5. Apply +24VDC to connector J3 pins 1 and 2, as shown in the figure, for a minimum of

five seconds. This step allows the microprocessor to read the DIP switch settings on
the Program Card.

6. Disconnect the +24VDC power supply.
If more programming is required, adjust the DIP switch settings and re-apply +24VDC
for a minimum of five seconds. Steps 4 to 6 may be repeated as required.
When programming is completed, remove the +24VDC power supply and the Program
Card.

7. Inspect the o-ring on the front cap assembly for damage and the flame path surfaces

for contamination. If necessary replace or clean and re-apply a suitable grease to the
o-ring and flame path surfaces.

8. Reconnect the fly-lead connector to the power supply board. Insert the front cap

assembly into the enclosure, ensuring the o-ring does not snag and secure with the
five screws.

Inspect the o-ring on the Base assembly for damage and the corresponding surfaces for
contamination. If necessary clean or replace and re-apply a suitable grease to the o-ring
and corresponding surfaces.

Reconnect the retainer strap at the rear of the Base assembly and reconnect the fly-leads
as shown in figure 3-C. Mount the detector on the Base assembly ensuring the o-ring does
not snag.

3.8 Factory Default Settings

Return to Factory Default settings only affects FlameGard 5 UV/IR-E versions with serial
communications capabilities. It provides a mechanism to restore the communications
parameters, should they be unknown or corrupted. The Factory Default settings are:

Parameter Setting

Address 1 (Decimal)
Baud Rate 19200
Data Format 8-N-1

Refer to section 7 for details

FlameGard 5 UV/IR-E

20

Figure 3-G Front Cap Assembly

FlameGard 5 UV/IR-E

21

4.0 Maintenance

WARNING – Installation and Maintenance must be carried out by suitably skilled and

competent personnel only.

4.1 General Maintenance

Once correctly installed, the unit requires very little maintenance other than regular
sensitivity checks and cleaning of the lenses, light rod and reflector. MSA recommends
that a schedule be established and adhered to.

Warning: Disconnect or inhibit external devices, such as automatic extinguishing or fire
suppression systems before performing any maintenance.

4.2 Cleaning the Lenses/Light Rod

A clean, soft, lint-free cloth, tissue or cotton swab should be used to apply the cleaning
solution. Do not

touch the lenses with fingers.

a) Wet the lenses with the solution.

b) Rub with a dry, unsoiled cloth until clean.

c) Completely dry the lenses.

d) Repeat steps a, b and c for the reflector and light rod.

NOTE: The removal of particulate matter and any film build-up on the lenses, lightrod and
reflector is necessary to ensure proper sensitivity of the system. It is recommended that
the lens and reflector be cleaned at least every 30 days or more often if the detector is
located in a particularly dirty environment.

Warning: A dirty or partially blocked lens can significantly reduce the detector’s field of
view and detection distance

DO NOT USE A COMMERCIAL GLASS CLEANER OTHER THAN “INDUSTRIAL
STRENGTH WINDEX® with Ammonia D”:
The UV lens material is quartz, the IR lens material is sapphire. The cleaning solution
should be Industrial Strength Windex® with Ammonia D.

FlameGard 5 UV/IR-E

22

4.3 Sensitivity Check

To verify that each detector is functioning correctly, an MSA Test Lamp and/or the
ALARM TEST function should be used. For the FlameGard 5 UV/IR-E FlameGard 5 Test
Lamp is recommended.

Alarm Test

The Flame Detectors have a built-in Alarm Test feature. The user can test the alarm
outputs of the Flame Detector by activating the Alarm Test feature via serial
communications. The Flame Detector will immediately go into WARN and then into the
time delayed ALARM. After two to ten seconds the Flame Detector will reset the non­latching WARN and/or ALARM. A latching WARN and or/ ALARM will remain latched until
manually reset. If the Flame Detector does not respond to the sources, it will output a
FAULT condition and will retest every ten seconds, as in the COPM FAULT case. See
section 6, Spares & Accessories for details on test lamps.

4.4 Storage

These Flame Detectors should be stored in a clean, dry area and within the temperature
and humidity ranges quoted in Section 2-4 Environmental Specifications.

FlameGard 5 UV/IR-E

23

5.0 Trouble Shooting

WARNING - Installation and Maintenance must be carried out by suitably skilled and

competent personnel only.

5.1 Trouble Shooting Chart

This section is intended to be a guide in correcting problems which may arise in the field.
This section is not all-inclusive, and MSA should be contacted for assistance if the
corrective actions listed do not eliminate the problem. If equipment or qualified personnel
required for various tests are not available it is recommended that the defective unit be
returned to MSA for repair.

A complete written description of the problem should be included. Be sure to inhibit or
disconnect external alarm wiring before making any checks which might send the unit into
alarm, if an alarm condition will create problems.

NOTE: If the equipment is under warranty, any repairs performed by persons other than
MSA’s authorised personnel may void the warranty. Please read the warranty statement
carefully.

PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION

No output signal and green
LED in IR window is off.

No DC Power to the Unit

Be sure the +24 VDC is applied
with the correct polarity.

No output signal and green
LED in IR window is rapidly
blinking.

Low voltage FAULT (voltage at
unit less than +18VDC).

Be sure that the unit is powered
with at least +20VDC under load.

2mA signal and green LED in
IR window is slowly blinking.

COPM FAULT, dirty or obscured
optical path (UV or IR window)

Clean UV and IR window and

source light rod.
Constant 8mA signal with no
known radiation to detector.

Background IR radiation at
detector.

Cover IR portion of FlameGard 5

UV/IR-E for ten seconds to

determine if there is background

IR. If there is, remove

IR Radiation source or change

FlameGard 5 UV/IR-E location. If

there is no background IR,

replace IR detector in

FlameGard 5 UV/IR-E.
Constant 12mA signal with no
known radiation to detector.

Background UV radiation at
detector.

Cover UV portion of FlameGard 5

UV/IR-E for ten seconds to

determine if there is background

UV. If there is, remove

UV radiation source or change

FlameGard 5 UV/IR-E location. If

there is no background UV,

replace UV detector tube in

FlameGard 5 UV/IR-E.

FlameGard 5 UV/IR-E

24

6.0 Spares & Accessories

6.1 Spare Parts

When ordering Spare Parts and/or Accessories please contact your nearest MSA
Representative or MSA directly and give the following information.

DESCRIPTION

PART NR

UV Source 70567-3
UV Detector 71521-1A
IR Detector 71391-2
Lamp, IR Source 70596-2
Program Card 71336-1
High Vacuum Grease,
150g Tube 916-078
FlameGard 5 Test Lamp 5TL-12
Window Cleaning Solution 10272-1

6.2 Test Lamps

FlameGard 5 UV/IR Test Lamp

The FlameGard 5 Test Lamp is a battery operated, rechargeable, test source specifically
designed to test MSA’s UV, UV/IR, and Digital Frequency IR Flame Detection Systems. It
consists of a high-energy broad band radiation source which emits sufficient energy in both
the Ultraviolet and Infrared spectra to activate UV and/or IR detectors. To simulate a fire,
the test lamp automatically flashes at one of three DIP switch selectable rates. The
FlameGard 5 Test Lamp, rated explosion-proof, is CSA certified for use in Class I, Division
1, Groups 2 C and D areas. The test lamp operates on internal lead-acid batteries which,
when fully charged, will operate continuously for 25 to 30 minutes. An internal circuit will
prevent operation when the batteries are low.

FlameGard 5 Test Lamp Operating Instructions

It is always important to start a series of FlameGard 5 Test Lamp checks with a fully
charged unit. Stand within 20 feet of the unit to be tested and aim the FlameGard 5 Test
Lamp squarely into the detector face. Shaking the lamp from side to side or up and down
will increase the simulation of flame flicker, and improve the response of the flame detector
to the lamp. If the system is operating normally, the detector will go into a WARNING
condition after a few flashes of the Test Lamp. If the lamp remains ON for the time­delayed period of the DIP switch setting, the detector will go into ALARM. To conserve
charge, do not operate the Test Lamp longer than is necessary to test each detector.
When the battery level drops below the level required maintaining the proper intensity of
the lamp, an internal low voltage circuit will shut the lamp off until the batteries have been
recharged.

FlameGard 5 Test Lamp Recharging Instructions

Insert the charging plug into the receptacle. Complete recharging takes a minimum of
fourteen hours. A schedule should be established and followed.

WARNING: Replace the knurled plug after charging is complete. Charging must be carried
out in a non-hazardous area. The charging receptacle is located inside the housing
adjacent to the ON button. To gain access, it is necessary to unscrew the gnarled plug
from the body of the unit. The plug is secured to the ON button by a safety strap to keep it
from being lost. It is recommended that the test lamp be kept on charge when not in use to
prevent excessive battery discharge. The batteries may be charged an average of
500 times and the battery pack is replaceable.

FlameGard 5 UV/IR-E

25

7.0 Markings, Certificates and Approvals

7.1 ATEX

Manufacturer :

MSA AUER, GMBH, Thiemannstrasse 1,
D-12059 Berlin

Product :

FlameGard 5 UV/IR-E

Type of protection :

EN 60079-0:2009 IEC 60079-31:2008
EN 60079-1:2007 IEC 60079-0:2007 Edition 5

Measuring function for
explosion protection

: None

:
Marking :

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

Options:
EC-Type Examination
Certificate

: Sira 10ATEX1365

Quality Assurance
Notification

: 0518

Year of Manufacture : see label
Serial No. : see label
Special Conditions for
safe use

Cable used should be rated to at least 110° C.
Cable glands must have the minimum IP rating IP 66.

EMC Conformance
(

2004 / 108 / EC)

: EN 50130-4 , EN 61000 - 6 - 4

7.2 SIL Parameters

Output Type Relay Output 4-20 mA Output

FM Certificate 3041816

MTBF (Years) 21

λDD (Fails per hour)

2.5E6 2.5E-6

λDU (Fails per hour)

1.2E-7 1.3E-7

Safe Failure Fraction (SFF) 98.2% 98%

Safety Integrity Level (SIL)* 2 2

Diagnostic Test Interval 1 second (Critical Faults)

1 minute (COPM)

Typical Response Time < 3 seconds

Average Probability of Failure
on Demand PFD

avg

1oo1**

1.4E-4 1.5E-4

* Hardware Fault Tolerance (HFT) = 0
** PFD

avg

1oo1 assumes a 4 hour repair time and 90 day proof test interval.

FlameGard 5 UV/IR-E

26

8.0 Modbus Serial Communications

See Modbus Specifications for detailed information on Modbus RTU protocol.