Fike FIK-IR3-AS25 User manual

FIK-IR3 User Manual Doc. No. 06-929.02
704 SW 10th Street, Blue Springs, MO 64014, USA T: ([phone]
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FIK-IR3 Triple IR Flame Detector

FIK-IR3 User Manual Doc. No. 06-929.02
FIK-IR3 Triple IR Flame Detector User Manual, November 2019
Copyright © Fike Corporation. 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 transmitted for
commercial purposes, such as selling copies of this publication or for providing paid for support services.
The Fike logo is a trademark of Fike Corporation, registered in the U.S. and other countries.
Every effort has been made to ensure that the information in this manual is accurate. However, Fike 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
1.1. Key Features.................................................................................................................................................1
1.2. Model Number Description..........................................................................................................................1
1.3. Internal Tests................................................................................................................................................1
2. Installation ............................................................................................................................................................2
2.1. General Considerations................................................................................................................................2
2.2. Preparations for Installation.............................................................................................................................3
2.3. Required Tools ..................................................................................................................................................4
2.4. Certification Instructions ..................................................................................................................................4
2.4.1. General ................................................................................................................................................4
2.4.2. Specific conditions for use...................................................................................................................4
2.5. Installing the Tilt Mount...............................................................................................................................5
2.6. Installing the detector..................................................................................................................................6
3. Configuration options ...........................................................................................................................................8
3.1. Sensitivity .....................................................................................................................................................8
3.2. Ultra-Fast Detection.....................................................................................................................................9
3.3. Alarm Delay ..................................................................................................................................................9
3.4. Alarm Latch ..................................................................................................................................................9
3.5. Window Heater ............................................................................................................................................9
3.6. Modbus Address ..........................................................................................................................................9
3.7. Manual BIT – Alarm Output Test
..................................................................................................................9
4. Detector Wiring...................................................................................................................................................10
4.1. Wiring Functions: .......................................................................................................................................10
4.2. Current Output (0-20mA) Wiring ...............................................................................................................11
4.3. RS-485 Communication Network...............................................................................................................13

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Table of Contents
5. Operation ............................................................................................................................................................14
5.1. Output Signals............................................................................................................................................14
5.2. Testing........................................................................................................................................................14
5.3. Maintenance ..............................................................................................................................................15
5.3.1. Cleaning Procedure ...........................................................................................................................15
5.4. Troubleshooting .........................................................................................................................................16
6. Specifications ......................................................................................................................................................17
6.1. Fire Detection.............................................................................................................................................17
6.2. Electrical Specifications..............................................................................................................................17
6.3. Outputs ......................................................................................................................................................17
6.4. Mechanical Specifications ..........................................................................................................................18
6.5. Environmental Specifications.....................................................................................................................18
6.6. Label Figures ..............................................................................................................................................19
6.6.1. Ex db ..................................................................................................................................................19
6.7. Approvals ...................................................................................................................................................20
6.8. Electromagnetic Compatibility...................................................................................................................20
7. Warranty.............................................................................................................................................................21
Appendix A Response Characteristics...............................................................................................................22
A.1 Response to different fire scenarios ..........................................................................................................22
A.2 False Alarm Immunity ................................................................................................................................23

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List of Figures
Figure 1: Tilt Mount Base - Rear View ...........................................................................................................................5
Figure 2: Tilt mount base – Side View ...........................................................................................................................6
Figure 3: Detector on Tilt Mount – Side View ...............................................................................................................7
Figure 4: Source 4-Wire Scheme .................................................................................................................................11
Figure 5: Sink 4-Wire Scheme......................................................................................................................................11
Figure 6: Source 3-Wire Scheme .................................................................................................................................12
Figure 7: Sink 3-Wire Scheme......................................................................................................................................12
Figure 8: RS-485 Networking .......................................................................................................................................13
List of Tables
Table 1: DETECTOR CONFIGURATION OPTIONS ............................................................................................................8
TABLE 2: SENSITIVITY LEVELS.........................................................................................................................................8
TABLE 3: TERMINAL CONNECTIONS ............................................................................................................................10
TABLE 4: OUTPUT SIGNALS ..........................................................................................................................................14

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1. Introduction
The FIK-IR3 flame detector provides ultra-fast response, high performance and reliable detection of all types
of hydrocarbon fires (visible and non-visible). The detector addresses slow growing fires as well as fast
eruption of fire using improved Triple IR (IR3) technology. It operates in all weather and light conditions with
highest immunity to false alarms.
•Detection within 40 milliseconds of fireballs or explosions
•Standard fire detected in only 1 second from 100 ft. (30m) and 4 seconds from 260 ft.
(80m).
The integral event recording on top of the proven superior capabilities of Triple IR (IR3) flame detection
provide you with a very powerful safety tool to protect your personnel, plant and process.
1.1. Key Features
•Extreme sensitivity - up to 260ft (80m) for a 1ft2(0.1m2) n-heptane pan fire.
•Ultra-fast detection mode - detection within 40 milliseconds for fireballs or explosions.
•1 second detection time - for 1ft2(0.1m2) n-heptane pan fire at up to 100 ft. (30m) distance.
•Built-in-Test (BIT) - Automatic and manual self-test of window cleanliness and the overall
operation of the detector.
•Window heater to avoid condensation and icing.
•Tilt mounting bracket can be connected either above or below the detector.
1.2. Model Number Description
Model No are defined as follows:
FIK-IR3-AS11 – Detector with M25 conduit openings
FIK-IR3-AS21 – Detector with ¾” NPT conduit openings
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 Table 4 (in section 5.1). 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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2. Installation
The detector is intended for use as part of a complex system where many detectors and other devices are
integrated with different vendors’ systems and interface communication to a variety of different types
and configuration control units and panels including control of instrumentations computers. 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 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 detector task definition, system configuration, installation location
and coverage considerations have been considered and clearly defined by the relevant designers.
To ensure optimal performance and an efficient installation that fits your needs and complies with the
requirements, the following guidelines should be addressed:
Sensitivity
To determine the sensitivity level, the following issues should be considered:
•The size of the fire 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

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Environment
•Environmental conditions including but not limited to dust, snow or rain can reduce the
detectors sensitivity and require additional maintenance.
Welding
•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.
2.2. Preparations for Installation
The installation must comply with 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 a safety
engineer.
The detectors can be installed with the use of general-purpose common tools and equipment.
Prior to installation:
•Verify the appropriate purchase order.
•Record the part and serial numbers of the detectors and the installation date and log.
•Visually inspect the detector prior to installation to make sure it is intact.
•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 12 to
22 AWG (2.5 2to 0.3 2) 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.
•Use wire rated for a temperature of at least 111°C, which is 5°C above the rated service
temperature.

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2.3. Required Tools
The detector can be installed using general purpose common tools as defined in the following table:
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
2.4.1. General
WARNING: 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 6.6.1.
•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 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.
•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 lens,
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.
2.4.2. 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 flameproof joints are not intended for repair. Contact the manufacturer if the
flameproof joints are damaged.

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•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 stopping plug is supplied with the detector and is suitably certified.
•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 4 2.
•The internal terminals are suitable for connection of a wire equal to or greater than the
power input wiring and at a minimum of 1 2conductor.
2.5. Installing 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 the detector from above.
Other designated adapters may be used to connect the detector to some other vendors’ tilt mounts
(useful when replacing an existing detector).
To install the tilt mount:
a) Place the tilt mount (Fig. 1) in its designated location and secure it with four screws through four
0.28" (7mm) diameter holes. There are four captive screws with spring washers in the tilt mount.
The following drawing shows the location of the four holes for the screws and washers.
Figure 1: Tilt Mount Base - Rear View

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The following drawing is a side view of the tilt mount:
Figure 2: Tilt mount base – Side View
2.6. Installing the detector
Use the following steps to connect the detector to the tilt mount, referring to Figure 3:
a) Unpack the detector
b) Place the detector, with its connector or cable pointing down, on the holding plate of the tilt mount
(item 2).
c) Secure the detector by using the two provided screws and spring lock washers (Items 3 and 4).
d) Release the locking screws (Items 5 and 6) in such a way that enables you to rotate the detector.
e) Point the detector towards the detection area and make certain that the view of the area is
unobstructed.
f) Secure the detector in that position by tightening the locking screws (Items 5 and 6) on the tilt
mount. (Make sure the detector is in the correct position).
The detector is now correctly located, aligned and ready to be connected to the system. Please refer to
section 0 for wiring instructions, and section 3 for a description of the detector’s configuration settings.

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Figure 3: Detector on Tilt Mount – Side View
ITEM
NO.
ITEM NAME
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
3
,
4
1
6
2
5

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3. Configuration options
Some functions of the detector can be configured using an RS-485 modem connected to a computer with
the “communicator” software. These configuration options are listed in the following table along with
their factory default values.
Table 1: DETECTOR CONFIGURATION OPTIONS
Function
Options
Default Setting
Sensitivity
Low, Medium, High, Extreme
Medium
Ultra-fast detection
Disabled, Enabled
Disabled
Alarm Delay
0, 5, 10, 20 or 30 seconds
0 seconds (no delay)
Alarm Latch
Disabled, Enabled
Disabled
Window Heater
Disabled, Enabled
Enabled
Modbus address
1 – 247
1
Manual BIT – Alarm Output Test
Disabled, Enabled
Disabled
Note: Medium sensitivity setting allows detection of a 1x1ft2 (0.1m2) N-heptane pan fire at a distance
of 100ft (30m).
3.1. Sensitivity
The detector can be configured to one of four sensitivity levels: low, medium, high and extreme. The
following table lists for each sensitivity setting the maximum distance, in which a standard fire1would be
reliably detected.
TABLE 2:SENSITIVITY LEVELS
Sensitivity level
Detection distance in feet (meters)
Low
50 (15)
Medium
100 (30)
High
200 (60)
Extreme
260 (80)
1A standard fire is defined as a 1x1 ft2(0.1 m2) N-heptane pan fire, with maximum wind speed of 6.5 ft/s
(2 m/s).

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Further details about the response characteristics of the detector at the different sensitivity settings can
be found in Appendix A.
3.2. Ultra-Fast Detection
The ultra-fast detection feature allows detection of fireballs and explosions at 40 milliseconds. This
feature can be disabled or enabled regardless of the alarm delay configuration.
3.3. Alarm Delay
When a flame is detected, the flame detector delays the execution of the alarm outputs by the configured
time period. After this time delay, the detector re-evaluates the situation. If a flame is still detected the
alarm outputs are activated.
3.4. Alarm Latch
If alarm latch is enabled, the detector outputs will remain in alarm mode even after a flame is no longer
detected. To return the detector outputs to normal mode the detector must be powered down and
restarted.
3.5. Window Heater
The detector is equipped with a heater to prevent condensation and icing on the window. If enabled, the
heater is operated automatically depending on temperature.
3.6. Modbus Address
The detector can communicate with the “communicator” software using a Modbus RTU compatible
protocol on RS-485. This protocol allows for a network of detectors to be connected, each with a unique
Modbus address. The address of the detector can be set to any value in the range 1–247.
3.7. Manual BIT – Alarm Output Test
When enabled, the alarm outputs are activated when a Manual BIT is initiated. See section 5.2 –
“Testing” for details.
WARNING: Make sure to disable all fire extinguishing actions or alarms connected to the detector
when the manual BIT is initiated and the “Manual BIT – Alarm Output Test” is enabled as the Manual BIT
will set the 0-20mA terminal to 20mA and close the alarm relay.

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4. Detector Wiring
WARNING: The sensor module in the front half of the detector contains no serviceable
components and should never be opened. The terminal compartment at the back is the only part of the
housing that should be opened by the user.
4.1. Wiring Functions:
The detector has 20 terminals as defined in the following table:
TABLE 3:TERMINAL CONNECTIONS
Pin #
Function
Description
Ground
Ground (earth)
Connected to a screw on the housing exterior.
1
24 VDC (+)
Power supply (18-32 VDC)
2
24 VDC (-)
Power supply return (0V)
3
0-20mA+ (In)
This output is used for analog 0-20 mA current output
4
0-20mA- (out)
5
Fault Relay
A normally open SPST contact relay, that is energized (closed) when the
detector is in normal operation, and opens in case of fault.
6
Fault Relay COM
7
Alarm Relay (NO)
A normally open SPST contact relay that is open in normal operation,
and closed when fire is detected. This relay can be configured to latch
as described in section (3.4).
8
Alarm Relay COM
11
24 VDC (+)
Power supply (18-32 VDC)
12
24 VDC (-)
Power supply return (0V)
13
Manual BIT activation
The manual BIT (built-in test) can be initiated by momentarily short
circuiting this terminal and one of the “24 VDC (-)” terminals (2 or 12).
See 3.7 Manual BIT – Alarm Output Test for more details.
14
Shield
This terminal should be left connected to the housing internal ground
screw.
15
RS 485 (+)
RS-485 Modbus communication (used by the “Communicator”
software)
16
RS485 (-)
17
Fault Relay (NC)
18
Alarm Relay (NC)

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4.2. Current Output (0-20mA) Wiring
The detector’s 0-20mA current output can act as both a source or a sink transmitter and can be 3wire or
4-wire connected.
The following drawing shows how to wire the detector to act as a current source isolated transmitter (4-
wire connection):
Figure 4: Source 4-Wire Scheme
The following drawing shows how to wire the detector to act as a current sink isolated transmitter (4-wire
connection):
Figure 5: Sink 4-Wire Scheme
Detector
1
2
3
4
VDC
24
Return
Return
24
VDC
Controller
Power
Detector
1
2
3
4
Power
VDC
24
Return
Return
VDC
24
Controller

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The following drawing shows how to wire the detector to act as a current source non-isolated transmitter
(3-wire connection):
Figure 6: Source 3-Wire Scheme
The following drawing shows how to wire the detector to act as a current sink non-isolated transmitter (3-
wire connection):
Figure 7: Sink 3-Wire Scheme
Controller
24
VDC
Return
Detector
1
2
3
4
11
Controller
24
VDC
Return
Detector
1
2
3
12
4

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4.3. RS-485 Communication Network
Using the RS-485 network capability of the detector and communicator software, it is possible to connect
up to 32 detectors in an addressable system with 4 wires only (2 for power and 2 for communication).
Using repeaters, the number of detectors can be much larger (32 detectors for each repeater) up to 247
on the same 4 wires. Using the RS-485 network, it is possible to read each detector’s status (fault, alarm)
and to initiate a BIT to each detector individually.
The detector communicates via RS-485 with a Modbus RTU compatible protocol. For more details on the
communication protocol, please consult with FIKE.
Figure 8: RS-485 Networking

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5. Operation
The FIK-IR3 is a triple-IR flame detector ready for detecting fire approximately 30 seconds after power up.
During this startup time the LED flashes Yellow. If the startup is successful, the indication LED turns to green,
the 0-20mA indicates 4mA and the fault relay is closed.
Detector configuration settings can be changed as described in section 3.
To restart the detector, turn off and then turn on the power.
5.1. Output Signals
The detector has the following output signals:
•Current output (0–20mA)
•Relays (Fault and Alarm)
•RS-485
•Tri-color LED
TABLE 4:OUTPUT SIGNALS
Startup
Fault
Dirty
Window
Normal
Fire Alarm
0 – 20mA
1mA
1mA
2mA
4mA
20mA
Fault Relay (NO)
Open
Open
Open
Closed
Closed
Alarm Relay NO
Open
Open
Open
Open
Closed
LED
Flashing
Yellow
Flashing
Yellow
Yellow
Green
Red
5.2. Testing
The detector has a Built-In-Test (BIT) capability to ensure proper operation and to make sure that the window
is not dirty. The BIT process runs automatically at startup and periodically during the operation of the
detector. The BIT can also be initiated manually by short circuiting the “Manual BIT” terminal and the “24
VDC (-)“ terminal for one second (see Table 3) or by using the communicator software (connected through
RS-485).
In case of “Dirty Window” fault the detector may still detect flames but at a lower sensitivity.