GasTech F-Guard-IR3-H2 User manual

USER MANUAL
Triple IR Hydrogen Flame Detector
t [phone] e [email protected] w gastech.com
t+61 8 6108 0000 [e-mail] wgastech.com

Information
F-Guard-IR3-H2Triple IR H2Flame Detector User Guide.
Copyright © Gastech.All rights reserved.
The owner or authorized user of a valid copy of this manual may reproduce this publication for the
purpose of learning to use the specified equipment. No part of this publication may be reproduced or
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registered in Australia and other countries.
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GASTECH AUSTRALIA PTY LTD 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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Table of Contents
1. Introduction.................................................................................................................... 1
Features ..............................................................................................................................1
Model Number Description ..................................................................................................2
Internal tests .......................................................................................................................2
Product Overview ................................................................................................................3
Accessories..........................................................................................................................4
2. Installation ..................................................................................................................... 8
General Considerations ........................................................................................................8
Preparations for Installation...............................................................................................11
Required Tools...................................................................................................................11
Certification Instructions....................................................................................................11
Mounting the Tilt Mount....................................................................................................12
Mounting the detector.......................................................................................................14
Electrical Wiring.................................................................................................................15
Current Output (0-20mA) Wiring ........................................................................................17
4 Wire Relay Connection ....................................................................................................19
RS-485 Communication Network........................................................................................19
Cabling Recommendations.................................................................................................20
Earth/Ground Regime ........................................................................................................20
3. Configuration options ................................................................................................... 21
Sensitivity..........................................................................................................................23
Ultra-Fast Detection...........................................................................................................23
Alarm Delay.......................................................................................................................23
Alarm Latch .......................................................................................................................23
Enable Pre-Alarm 0-20mA ..................................................................................................23
Enable dirty window warning 0-20mA ................................................................................24
Auxiliary Relay ...................................................................................................................24
Window Heater .................................................................................................................24
Modbus Address................................................................................................................24

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Manual BIT – Alarm Output Test (Full Loop test).................................................................24
4. Operation ..................................................................................................................... 25
Output Signals ...................................................................................................................25
Testing...............................................................................................................................26
Flame Simulator.................................................................................................................26
5Maintenance ................................................................................................................ 26
Cleaning Procedure............................................................................................................26
6Troubleshooting............................................................................................................ 27
7Servicing ....................................................................................................................... 28
8Communicator Software ............................................................................................... 28
9Specifications................................................................................................................ 29
Fire Detection ....................................................................................................................29
Electrical Specifications ......................................................................................................29
Outputs .............................................................................................................................29
Mechanical Specifications ..................................................................................................30
Environmental Specifications .............................................................................................30
Product Labeling ................................................................................................................31
Approvals ..........................................................................................................................33
Electromagnetic Compatibility ...........................................................................................33
10 Performance.............................................................................................................. 34
F-Guard-IR3-H2-ASX1 (Standard Mode)...............................................................................34
False Alarm Immunity ........................................................................................................35
11 Ordering Information................................................................................................. 36
12 Warranty................................................................................................................... 37
Appendix A.......................................................................................................................... 38

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List of Figures
Figure 1 - Front view of the F-Guard-IR3-H2........................................................................................................3
Figure 2 - Rear view ofthe F-Guard-IR3-H2..........................................................................................................3
Figure 3 - Tilt mount .............................................................................................................................................4
Figure 4 - Weather COVER ....................................................................................................................................4
Figure 5 - Pole Mount ...........................................................................................................................................5
Figure 6 - AirShield............................................................................................................................................... 5
Figure 7 - Flame Simulator Kit............................................................................................................................... 6
Figure 8 - F-Guard-FSIM-IR3-H2 Flame Simulator Front View.............................................................................. 6
Figure 9 - Horizontal Field of View........................................................................................................................ 9
Figure 10- Vertical Field of View ..........................................................................................................................9
Figure 11: Tilt Mount Base - Front View ..............................................................................................................13
Figure 12: Tilt mount base – Side View................................................................................................................13
Figure 13- Detector onTilt Mount – Side View...................................................................................................14
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- 4Wire Relay Connection ...................................................................................................................19
Figure 20: RS-485 Networking .............................................................................................................................20
List of Tables
Table 1: Terminal connections............................................................................................................................16
Table 2: Detector Configuration Options............................................................................................................22
Table 3: Sensitivity levels ....................................................................................................................................23
Table 4: Output Signals .......................................................................................................................................25

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1. Introduction
The F-Guard-IR3-H2 flame detector will detect hydrogen and other “energy transition” fires quickly
allowing actions to be initiated to minimize the extend of the fire. The detector addresses slow growing
fires as well as fast eruptions of fire using improved IR3 technology. The detector operates in all weather
and light conditions.
These features, along with a built-in event logger, provide additional means to study the cause and
development of fire events.
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 either side of the lower part of the detector
housing are for connecting power and outputs to associated signaling equipment.
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.
Features
•High sensitivity - up to 100ft (30m)
•Ultra-fast detection mode - detection within 40 milliseconds for fireballs or explosions.
•Detection of “energy transition” flames, like hydrogen, methane, syngas, and methanol
•Extreme sensitivity: Up to 100 ft. (30m) for a 32” plume, 1.5secs response
•Option: Improved speed of response for standard fires - (0.5s) for enclosed space protection, like spray
paint booths or printing presses
•Built-in-Test (BIT) - Automatic and manual self-test of window cleanliness and detector operation.
•Window heater to avoid condensation and icing.
•Tilt mounting bracket for accurate detector positioning.

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Model Number Description
Model No are defined as follows:
F-Guard-IR3-H2 - 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.
Generally used for enclosed spare protection.
1
M25
2
¾” NPT
1.2.1 Enhanced performance options
Option 5: Design for, but not limited to, enclosed space protection like automotive spray paint applications
where compliance with 0.5 s response (per NFPA 33) is needed
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 Table 4 (in section 4). During “Dirty Window” fault the detection sensitivity is
significantly reduced, while “Fault” refers to critical faults which totally prevent flame detection.

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Product Overview
FIGURE 1-FRONT VIEW OF THE F-GUARD-IR3-H2
FIGURE 2-REAR VIEW OF THE F-GUARD-IR3-H2

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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
section2.5 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 protects the
detector from extreme weather
conditions such
heat, rain, and snow
FIGURE 4-WEATHER COVER
1.5.3 Pole mount

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The pole mount enables the detectors to be
installed with itstilt mount brackets.The pole
mount kit wesupply are suitable for 2-inch or3-
inch poles. Part number F-Guard-PMA-S23.
FIGURE 5-POLE MOUNT
1.5.4 Air shield
The air shield P/N F-Guard-ASD-S01 allows
installation of flame detectors in harsh weather
conditions where they may beexposed to dust,
sand, and other particulate matter. The
connection point can be mounted in the 3, 9or12
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-IR3-H2may be tested using the FLS-
FSIM-IR3-H2-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 canbereduced as
the detectors can be tested insitu without needing
ahot work permit.
F-Guard Flame Simulators emit IR radiation in a
special electromagnetic radiation pattern which
simulates a hydrogen fire to the detectors. The
simulators are lightweight, easy touse, with testing
distances of upto23 ft. (7m) and capable ofmore
than 1000 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-F-Guard-FSIM-IR3-H2FLAME SIMULATOR
FRONT VIEW

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2. Installation
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.
General Considerations
This section includes important information.
•To help obtain optimal performance, the detector should be aimed toward the center 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 to be detected at the determined distance.
•The type of flammable fuel.
•Potential sources of false alarms that may be present (e.g., naked flames, hot process).
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
detectors 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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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.
Prior to 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 color-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 application certification and temperatures.
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
Certification Instructions
Warnings
•Do not open the detector, even when isolated, when flammable atmosphere present.
•The equipment may be used in hazardous areas with flammable gasses and vapors 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 0.
•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 in accordance with the applicable code of practice by
suitably trained personnel.
•Inspection and maintenance of this equipment shall be carried out by suitably trained
personnel in accordance with the applicable code of practice.

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•If the equipment is likely to come into contact with corrosive and 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 data sheet 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 in accordance with 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 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 cable lug with M5x10 stainless steel screw,
the terminals is suitable for connection of a wire of at least 4mm2 /12AWG.
•The internal terminals are suitable for connection of a wire equal to or greater than the
power input wiring and at a minimum of 1mm2/ 17AWG conductor.
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). However, with a designated adapter the tilt mount can hold

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the detector from above. Contact Gastech formore details onmounts suitable forretro
fitofexisting installations.
To install the tilt mount:
a) Mount the tilt mount base (Figure 11: Tilt Mount Base - Front View) 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 - Front View
Figure 12: Tilt mount base – Side View

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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
1
TILT MOUNT ASSEMBLY
3, 4
1
6
2
5

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Electrical Wiring
Warning
•The sensor module in the front half of the detector contains no serviceable components
and should never be opened. Opening will invalidate the warranty of the detector. The
terminal compartment at the back is the only part of the housing that should be opened
by the user.
•The detector has 16 screw terminals as shown in the following figure and table:
2
HOLDING PLATE
3,4
MOUNTING HEX SCREWS M8 AND LOCK WASHERS
5
HEX SOCKET LOCKING SCREW M8
6
HEX SOCKET LOCKING SCREW M12
F
IGURE
14
–
T
ERMINAL
V
IEW