GasTech F-GUARD UVIR User manual

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USER’S MANUAL
UV-IR Flame Detector

F-Guard-UV-IR (F) UV/IR Flame Detector User Guide, July 2021
Copyright © Fire & Gas Detection Technologies Inc. All rights reserved.
The owner or authorized user of a valid copy of this manual may reproduce this publication to learn to
use the specified equipment. No part of this publication may be reproduced or transmitted for
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The Fire & Gas Detection Technologies logo is a trademark of Fire & Gas Detection Technologies Inc.,
registered in the U.S. and other countries.
Every effort has been made to ensure that the information in this manual is accurate. However, Fire &
Gas Detection Technologies Inc. is not responsible for any inaccuracy or omission in this document. The
information in this document is subject to change without notice.
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DETECTION TECHNOLOGIES INC. assumes no liability resulting from any omissions in this document or
misuse of the information obtained herein. The information in this document has been carefully
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FIRE & GAS DETECTION TECHNOLOGIES INC. reserves the right to make changes to any products
described herein to improve reliability, function, or design, and reserves the right to revise this
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persons of revisions or changes. FIRE & GAS DETECTION TECHNOLOGIES INC does not assume any
liability arising out of the application or any use of any product or circuit described herein; neither does
it convey a license under its patent rights or the rights of others.

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Table of Contents
1. Introduction.................................................................................................................... 1
1.1 Key Features ........................................................................................................................1
1.2 Model Number Description ..................................................................................................2
1.3 Internal tests .......................................................................................................................2
1.4 Product Overview ................................................................................................................3
1.5 Accessories..........................................................................................................................4
2Installation ..................................................................................................................... 7
2.1 General Considerations ........................................................................................................7
2.2 Preparations for Installation...............................................................................................10
2.3 Required Tools...................................................................................................................10
2.4 Certification Instructions....................................................................................................10
2.5 Mounting the Tilt Mount....................................................................................................12
2.6 Mounting the detector.......................................................................................................13
2.7 Electrical Wiring.................................................................................................................15
2.8 Current Output (0-20mA) Wiring ........................................................................................17
2.9 4 Wire Relay Connection ....................................................................................................19
2.10 RS-485 Communication Network........................................................................................19
2.11 Cabling Recommendations.................................................................................................20
2.12 Earth/Ground Regime ........................................................................................................20
3Configuration options ................................................................................................... 21
3.1 Sensitivity..........................................................................................................................23
3.2 Ultra-Fast Detection...........................................................................................................23
3.3 Alarm Delay.......................................................................................................................23
3.4 Alarm Latch .......................................................................................................................23
3.5 Enable Pre-Alarm 0-20mA ..................................................................................................23
3.6 Enable dirty window warning 0-20mA ................................................................................24
3.7 Auxiliary Relay ...................................................................................................................24
3.8 Window Heater .................................................................................................................24

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3.9 Modbus Address................................................................................................................24
3.10 Manual BIT – Alarm Output Test (Full loop test)..................................................................24
4Operation ..................................................................................................................... 25
4.1 Output Signals ...................................................................................................................25
4.2 Testing...............................................................................................................................26
4.3 Flame Simulator.................................................................................................................26
5Maintenance ................................................................................................................ 26
5.1 Cleaning Procedure............................................................................................................27
6Troubleshooting............................................................................................................ 27
7Servicing ....................................................................................................................... 28
8FGD Communicator Software ........................................................................................ 28
9Specifications................................................................................................................ 29
9.1 Fire Detection ....................................................................................................................29
9.2 Electrical Specifications ......................................................................................................29
9.3 Outputs .............................................................................................................................30
9.4 Mechanical Specifications ..................................................................................................30
9.5 Environmental Specifications .............................................................................................30
9.6 Product Labeling ................................................................................................................31
9.7 Approvals ..........................................................................................................................33
9.8 Electromagnetic Compatibility ...........................................................................................33
10 Performance F-Guard-UV-IR....................................................................................... 34
10.1 F-Guard-UV-IR-ASX1 (Standard mode) ................................................................................34
10.2 False Alarm Immunity ........................................................................................................36
11 Performance F-Guard-UV-IR-F.................................................................................... 37
11.1 F-Guard-UV-IR-F-ASX1 (Standard mode) .............................................................................37
11.2 False Alarm Immunity ........................................................................................................39
12 Ordering Information................................................................................................. 40
13 Warranty................................................................................................................... 41
Appendix A.......................................................................................................................... 42

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List of Figures
Figure 1 - Front view of the FLS-UV-IR (F).....................................................................................................3
Figure 2 - Rear view of the FLS-UV-IR (F) ...................................................................................................... 3
Figure 3 - Tilt mount .....................................................................................................................................4
Figure 4 - Weather Cover..............................................................................................................................4
Figure 5 - Pole Mount ...................................................................................................................................5
Figure 6 - Air Shield....................................................................................................................................... 5
Figure 7 - Flame Simulator Kit....................................................................................................................... 6
Figure 8 - FLS-FSIM-UV-IR Flame Simulator Front View ............................................................................... 6
Figure 9 - Horizontal Field of View................................................................................................................8
Figure 10 - Vertical Field of View ..................................................................................................................8
Figure 11: Tilt Mount Base - Plate View......................................................................................................12
Figure 12: Tilt mount base – Side View.......................................................................................................12
Figure 13 - Detector on Tilt Mount – Side View..........................................................................................13
Figure 14 – Terminal View ..........................................................................................................................15
Figure 15 – Source 4-Wire Scheme.............................................................................................................17
Figure 16 – Sink 4-Wire Scheme .................................................................................................................17
Figure 17 – Source 3-Wire Scheme.............................................................................................................18
Figure 18 – Sink 3-Wire Scheme .................................................................................................................18
Figure 19 - 4 Wire Relay Connection ..........................................................................................................19
Figure 20: RS-485 Networking ....................................................................................................................20

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List of Tables
Table 1: Terminal connections....................................................................................................................16
Table 2: Detector Configuration Options....................................................................................................22
Table 2: Sensitivity levels ............................................................................................................................23
Table 4: Output Signals ...............................................................................................................................25

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1. Introduction
The F-Guard-UV-IR flame detector provides an ultra-fast response, high performance and reliable detection
of a large variety of fires including hydrocarbon fires (visible and non-visible), as well as hydrogen fires (F-
Guard-UV-IR only).
The detector is certified for use in hazardous area locations; it may also be used in other areas not classified
as hazardous. The two cable/conduit entries on either side of the lower part of the detector housing are for
connecting power and outputs to associated signalling equipment.
The detector addresses slow-growing fires as well as fast eruptions of fire using improved UV-IR technology.
The detector operates in all weather and light conditions. It will automatically record a fire event (1 min
pre/post alarm) using the internal data logger.
During normal operation, the flame detector performs self-tests of its optics, electronics and software. These
include a periodic BIT (Built-In-Test) in which the sensors and window cleanliness are tested.
This manual covers two UV/IR detector models:
F-Guard-UV-IR: Hydrogen and hydrocarbons flame detection. UV radiation 0.18-0.26 micron range.
Spectrum response of IR radiation in the 2.5 - 3.5 micron range.
F-Guard-UV-IR-F: Hydrocarbon flame detection. Spectrum response of IR radiation in the 4.0-5.0 micron
range.
1.1 Key Features
•High immunity: To false alarm
•Ultra-fast detection mode: Within 5 milliseconds for Hydrogen fireballs or explosions
•Extreme sensitivity: Up to 100 ft. (30m) for a 1ft2 (0.1m2) n-heptane pan fire
•Built-in-Test (BIT) - Automatic and manual self-test of window cleanliness and the overall operation
of the detector.
•Improved speed of response option - (0.5s) for automotive applications in compliance with NFPA 33
•Window heater - to avoid condensation and icing.
•Tilt mounting bracket - for accurate detector positioning.
•UV and IR warning levels - 0-20mA - current output warning when elevated UV or IR radiation is
detected.

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1.2 Model Number Description
The model numbers are defined as follows:
F-Guard-UV-IR-F - A SX X
F-Guard-UV-IR - A SX X
1
Standard
5
Design for, but not limited to, automotive spray paint applications
where compliance with 0.5 s response (per NFPA 33) is needed
1
M25
2
¾” NPT
1.2.1 Enhanced performance option
Option 5: Design for, but not limited to, automotive spray paint applications where compliance with 0.5 s
response (per NFPA 33) is needed
1.3 Internal tests
During normal operation, the flame detector performs self-tests of its optics, electronics, and software. These
include a periodic BIT (Built-In-Test) in which the sensors and window cleanliness are tested. Any detected
fault is indicated as shown in Error! Reference source not found. (in section 4.1). During the “Dirty Window”
fault the detection sensitivity is significantly reduced, while “Fault” refers to critical faults which prevent
flame detection.

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1.4 Product Overview
FIGURE 1-FRONT VIEW OF THE F-GUARD-UV-IR (F)
FIGURE 2-REAR VIEW OF THE F-GUARD-UV-IR (F)

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1.5 Accessories
1.5.1 Mounting Bracket
The detector should be mounted using the
stainless-steel tilt mount part number 85-6000-
TMO. This allows the detector to be securely
attached to a wall, pole or other solid surface
using appropriate fixings. See sections2.5 and 2.6
for further details.
FIGURE 3-TILT MOUNT
1.5.2 Weather Cover
The weather cover P/N 85-6000-WC-SS-01
protect
s the detector from extreme weather
conditions such
as heat, rain and snow
FIGURE 4-WEATHER COVER

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1.5.3 Pole mount
The pole mount enables the detectors to be
installed
with its tilt mount brackets. The pole
mount kit we supply
is suitable for 2-inch or 3-inch
poles. Part number FLS
-PMA-S23.
FIGURE 5-POLE MOUNT
1.5.4 Air shield
The air shield P/N FLS
-ASD-S01 allows the installation
of flame detectors in harsh weather conditions where
they may be exposed to dust, sand, and other
particulate matter.
The connection point can be
mounted in the 3, 9 or 12 o’clock locations.
•
Air pressure source: Clean, dry, and oil-free air
•
Pressure: 2-3 bar /30-45 psi
•
Fitting: 7/16”—20UNF-2A
•
Operation temperature: -55°C to +85°C / -67°F
to +185°F
FIGURE 6-AIR SHIELD

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1.5.5 Flame Simulator
The F-Guard-UV-IR (F) may be tested using the FLS-
FSIM-UV-IR-KIT. The F-Guard flame simulator
family provides a fast and convenient means of
periodically testing the detector and control system
end-to-end. Maintenance costs can be reduced as
the detectors can be tested in situ without needing
a hot work permit.
F-Guard Flame Simulators emit UV and IR radiation
which simulates a fire to the detectors. The
simulators are lightweight, easy to use, with testing
distances of up to 21.3 ft. (6.5m) and capable of
more than 100 activations between battery
charging. F-Guard Flame Simulators are ATEX
approved for use in hazardous Zone 1, Zone 2, Zone
11, Zone 22 areas.
Each simulator kit contains a carrying case,
simulator, carrying strap, battery charger, user
manual, Allen key and a tool for removing the
simulator rear cover.
FIGURE 7-FLAME SIMULATOR KIT
FIGURE 8-FLS-FSIM-UV-IR FLAME SIMULATOR FRONT
VIEW

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2Installation
This chapter does not attempt to cover all of the standard practices and codes of installation.
Rather, it emphasizes specific points of consideration and provides some general rules for qualified
personnel. You must always observe special safety precautions.
2.1 General Considerations
This section includes important information.
•To help obtain optimal performance, the detector should be aimed toward the centre of
the hazard or area to be monitored and protected ("detection zone") and have, to the
extent that is required, an unobstructed view of the protected area. Whenever possible,
the detector face should be tilted (aimed) down at an angle to prevent the accumulation
of dust and dirt.
•Do not start an installation until the performance target, system configuration,
installation location and coverage considerations have been defined by the responsible
person.
To ensure optimal performance the following guidelines should be addressed:
Sensitivity
To determine the sensitivity level, the following points should be considered:
•The size of the fire is to be detected at the determined distance.
•The type of flammable fuel.
Spacing and Location
Consider the following factors when determining the number of detectors and their locations in the
protected area:
•The size and shape of the protected area
•The nature of the hazards, including materials stored or used and the protected objects
•The sensitivity of the detectors
•If there are any obstructed lines of sight
•The field of view of the detectors (See Figure 9 and Figure 10)

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FIGURE 9-HORIZONTAL FIELD OF VIEW
FIGURE 10 -VERTICAL FIELD OF VIEW

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Environment
•Environmental conditions including but not limited to dust, snow or rain can reduce the
detector's sensitivity and require additional consideration.
Hot Work
•Arc welding should not be performed within 15 ft. (5m) of the detector. It is
recommended that the system be inhibited during welding operations in situations
where the possibility of a false alarm cannot be tolerated.
•Gas welding requires a system inhibit since the gas torch is an actual fire.
•Arc welding rods can contain organic binder materials in the flux that burn during the
welding operation and are detectable by the device.
•Welding rods with clay binders do not burn and should not be detected. However, a
system inhibit is always recommended, since the material being welded may be
contaminated with organic substances (paint, oil, etc.) that will burn and may be of the
size that should be detected.

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2.2 Preparations for Installation
The installation must comply with national and local regulations and standards applicable to
flame detectors (e.g., NFPA 72) and all local and common engineering practices. It is
recommended to consult with the authority having jurisdiction.
Before installation:
•Make sure that you have all the components and tools required to complete the
detector installation readily available before beginning installation. In cases where you cannot
complete the installation in a single session, secure and seal the detectors and conduits before
leaving the site.
•Use colour-coded conductors or suitable wire markings or labels for the wiring. You may
use 14 to 17 AWG (2.5mm2to 1.0mm2) multi-strand wires for the site wiring. The selection of
wire gauge should be based on the number of detectors used on the same line and the distance
from the control unit, in compliance with specifications.
•Individually screen twisted pair cable is recommended for RS485 terminals.
•Use suitably rating wire for the applicable certification and temperatures.
2.3 Required Tools
The detector can be installed using the following tools:
Tool
Function
Hex. KEY 6 mm
Vertical alignment
Hex. KEY 10 mm
Horizontal alignment
Wrench 13 mm
Mounting the detector
Flat Screwdriver 6 mm
Ground screw connection
Flat screwdriver 3.5mm
Terminal connection
2.4 Certification Instructions
Warnings
•Do not open the detector, even when isolated, when a flammable atmosphere is
present.
•The equipment may be used in hazardous areas with flammable gasses and vapours
with apparatus groups IIC, IIB and IIA and with temperature classes T1, T2, T3, T4 and T5. See
details of the explosion-proof approvals in section 9.6.1.
•The equipment is certified for use in ambient temperatures in the range of -67°F to
+167°F (-55°C to +75°C) or -67°F to +185°F (-55°C to +85°C) and should not be used in
temperatures outside this range.
•Installation shall be carried out per the applicable code of practice by suitably trained
personnel.

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•Inspection and maintenance of this equipment shall be carried out by suitably trained
personnel per the applicable code of practice.
•If the equipment is likely to come into contact with corrosive and/or other harsh
substances, consult with the relevant technical persons to take suitable precautions to prevent
the detector from being adversely affected, thus ensuring that the type of protection is not
compromised.
Harsh substances: For example, acidic liquids, gases, or solvents that may attack the
windows, metals, seals, or polymeric materials.
Suitable precautions: For example, regular checks as part of routine inspections or
establishing from the material’s datasheet that it is resistant to specific chemicals.
Specific conditions for use
•The equipment is not intended to be repaired by the user. Repair of this equipment
shall be carried out by the manufacturer per the applicable code of practice.
•The flame paths are not intended for repair. Contact the manufacturer if the flame
paths are damaged.
•Consult the manufacturer for a genuine replacement cover and housing to connection
box fasteners. M6x1x18 Hexagonal Socket head fasteners with a minimum of ISO 4762 Grade
A4 Class 80 are acceptable alternatives.
•One suitably certified stopping plug is supplied with the detector.
•The external earthing connection consists of a cable lug with an M5x10 stainless steel
screw, the terminals are suitable for connection of a wire of at least 4mm2 /12AWG.
•The internal terminals are suitable for the connection of a wire equal to or greater than
the power input wiring and at a minimum of 1mm2/ 17AWG conductor.

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2.5 Mounting the Tilt Mount
The tilt mount enables the detector to be rotated up to 45 degrees (horizontal/vertical)
in all directions. The following installation instructions show how to use it to support the
detector from below (the preferred method).
To install the tilt mount:
a) Mount the tilt mount base (Figure 11) to a solid structure using four suitable fixings through
the four 7mm (0.28") diameter holes. Four captive screws with spring washers are provided
in the tilt mount.
Figure 11: Tilt Mount Base - Plate View
Figure 12: Tilt mount base – Side View

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2.6 Mounting the detector
Referring to Figure 13, use the following steps to connect the detector to the tilt mount:
a) Place the detector, with its cable/conduit entries pointing down, on the holding plate of
the tilt mount (item 2).
b) Secure the detector to the plate using the two hex screws and spring lock washers
(items 3 and 4).
c) Loosen the locking screws (Items 5 and 6) in such a way that enables you to rotate the
detector.
d) Point the detector towards the detection area and make certain that the view of the
area is unobstructed.
e) Secure the detector in that position by tightening the locking screws (Items 5 and 6) on
the tilt mount. (Make sure the detector is pointing in the correct direction).
The detector is now correctly mounted, aligned, and ready for electrical connection. Please refer
to section 2.7 for wiring instructions and section 3 for a description of the detector’s
configuration settings.
FIGURE 13 -DETECTOR ON TILT MOUNT –SIDE VIEW
ITEM
NO.
ITEM NAME
3, 4
1
6
2
5

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1
TILT MOUNT ASSEMBLY
2
HOLDING PLATE
3,4
MOUNTING HEX SCREWS M8 AND LOCK WASHERS
5
HEX SOCKET LOCKING SCREW M8
6
HEX SOCKET LOCKING SCREW M12