Msa FL3101H, FL3100H User Manual

Models FL3100H/FL3101H

UV/IR and UV only

Flame Detectors

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 DATE 01-16

General Monitors reserves the right to change
published specifications and designs without
prior notice.

MANFL3100H/3101H

Part No. MANFL3100/3101H
Revision H/01-16

Models FL3100H/3101H

ii

Models FL3100H/3101H

Table of Contents

MODELS FL3100H/FL3101H ........................................................................................................ I

UV/IR AND UV ONLY FLAME DETECTORS ............................................................................... I

TABLE OF FIGURES ................................................................................................................. VII

TABLE OF TABLES .................................................................................................................. VIII

QUICK START GUIDE ................................................................................................................. 1

Mount and Wire the Detector .................................................................................................................. 1

Apply Power to the Detector ................................................................................................................... 4

Testing the Detector Using the TL105 .................................................................................................... 4

1.0INTRODUCTION .................................................................................................................... 5

1.1 Protection for Life ....................................................................................................................... 5

1.2 Special Warnings ....................................................................................................................... 5

1.3 System Integrity Verification ...................................................................................................... 5

2.0PRODUCT DESCRIPTION ..................................................................................................... 7

2.1 General Description ................................................................................................................... 7

3.0INSTALLATION ...................................................................................................................... 8

3.1 Tools Required ........................................................................................................................... 8

3.2 Choosing Product Locations ...................................................................................................... 8

3.2.1 Detector Field of View ................................................................................................... 8

3.2.2 Optical Sensitivity Range .............................................................................................. 8

3.2.3 Environmental Factors .................................................................................................. 8

3.3 Mounting and Wiring ................................................................................................................ 12

3.3.1 Terminal Connections ................................................................................................. 18

3.3.2 Terminal Block TB2 – Alarm Relay Connections ........................................................ 18

3.3.3 Terminal Block TB-2 Warning Relay Connections ...................................................... 19

3.3.4 Fault Relay .................................................................................................................. 19

3.3.5 Alarm Reset Terminal ................................................................................................. 20

3.3.6 Analog Output ............................................................................................................. 20

3.3.7 Cable Requirements ................................................................................................... 21

3.3.8 Power .......................................................................................................................... 21

3.3.9 Modbus Interface ........................................................................................................ 22

3.3.10 Chassis Ground .......................................................................................................... 22

3.3.11 Connection to Fire Cards/Panels ................................................................................ 22

3.3.12 Cable Termination in the Non-Hazardous Area .......................................................... 23

4.0OPERATION ......................................................................................................................... 24

4.1 Checklist ................................................................................................................................... 24

4.2 Start Up .................................................................................................................................... 24

4.3 System Test ............................................................................................................................. 24

4.4 User Selectable Options/Factory Defaults ............................................................................... 24

5.0MODBUS INTERFACE ........................................................................................................ 26

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Models FL3100H/3101H

 Baud Rate ................................................................................................................................ 26

5.1

5.2 Data Format ............................................................................................................................. 26

5.3 Modbus Read Status Protocol (Query/Response) ................................................................... 26

5.3.1 Modbus Read Query Message ................................................................................... 26

5.3.2 Modbus Read Response Message ............................................................................. 27

5.4 Modbus Write Command Protocol (Query/Response) ............................................................ 27

5.4.1 Modbus Write Query Message ................................................................................... 27

5.4.2 Modbus Write Response Message ............................................................................. 28

5.4.3 Function Codes Supported ......................................................................................... 28

5.5 Exception Responses and Exception Codes ........................................................................... 28

5.5.1 Exception Responses ................................................................................................. 29

5.6 Command Register Locations .................................................................................................. 30

5.6.1 Operational Mode Commands .................................................................................... 30

5.7 FL3100H / FL3101H Operational Mode Command Register Details ...................................... 34

5.7.1 Analog (00H) ............................................................................................................... 34

5.7.2 Mode (01H) ................................................................................................................. 34

5.7.3 Status/Error (02H) ....................................................................................................... 34

5.7.4 Faults .......................................................................................................................... 35

5.7.5 UV/IR Only (03H) ........................................................................................................ 35

5.7.6 Model Type (04H) ....................................................................................................... 35

5.7.7 Software Revision (05H) ............................................................................................. 36

5.7.8 COPM Fault (06H) ...................................................................................................... 36

5.7.9 EEPROM Override (07H) ............................................................................................ 36

5.7.10 Options (08H) .............................................................................................................. 36

5.7.11 Comm 1 Address (09H) .............................................................................................. 37

5.7.12 Comm 1 Baud Rate (0BH) .......................................................................................... 37

5.7.13 Comm 1 Data Format (0CH) ....................................................................................... 38

5.7.14 UV Signal Count (0DH) ............................................................................................... 38

5.7.15 IR Signal Count (0EH) ................................................................................................ 38

5.7.16 UV Fault Total (0FH) ................................................................................................... 38

5.7.17 IR Fault Total (10H) ..................................................................................................... 38

5.7.18 Remote Reset (11H) ................................................................................................... 38

5.7.19 Remote Alarm Test (12H) ........................................................................................... 39

5.7.20 Clear COPM Faults (13H) ........................................................................................... 39

5.7.21 Serial Number (15/16H) .............................................................................................. 39

5.7.22 HART Enable (1D) ...................................................................................................... 39

5.7.23 HART Test (1E) ........................................................................................................... 39

5.7.24 Not Used (1F) .............................................................................................................. 40

5.7.25 Comm 1 Total Illegal number of registers Errors (20H) .............................................. 40

5.7.26 Comm 1 Bus Activity Rate % (21H) ............................................................................ 40

5.7.27 Comm 1 Function Code Errors (22H) ......................................................................... 40

5.7.28 Comm 1 Starting Address Errors (23H) ...................................................................... 40

5.7.29 Comm 1 Total Receive Errors (24H) ........................................................................... 40

5.7.30 RXD CRC Errors Hi (25h) ........................................................................................... 40

5.7.31 RXD CRC Errors Lo (Same as Hi) (26h) .................................................................... 40

5.7.32 Comm 1 Overrun Errors (27H) .................................................................................... 40

5.7.33 Comm 1 Parity Errors (28H) ....................................................................................... 40

5.7.34 Comm 1 Framing Errors (29H) ................................................................................... 41

5.7.35 Comm 1 Total UART Receive Errors (2AH) ............................................................... 41

5.7.36 Comm 1 Total Receive Errors (2BH) .......................................................................... 41 

5.7.37 Clear Comm 1 UART Errors (2CH) ............................................................................. 41

5.7.38 Clear Comm 1 Modbus Errors (2DH) .......................................................................... 41

5.7.39 HART Current (2E) ...................................................................................................... 41

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Models FL3100H/3101H

 Comm 2 Address (2FH) .............................................................................................. 41

5.7.40

5.7.41 Comm 2 Baud Rate (30H) .......................................................................................... 42

5.7.42 Comm 2 Data Format (31H) ....................................................................................... 42

5.7.43 Not Used (32H) ........................................................................................................... 42

5.7.44 Input Voltage (33H) ..................................................................................................... 42

5.7.45 Alarm Test Voltage (34H) ........................................................................................... 43

5.7.46 Reset Relays Voltage (35H) ....................................................................................... 43

5.7.47 Dip Switch Settings (36H) ........................................................................................... 43

5.7.48 Not Used (37 – 3FH) ................................................................................................... 43

5.7.49 See Event Logging - Section 6.0 (40H – 67H) ............................................................ 43

5.7.50 User Information (68h to 77h) ..................................................................................... 43

5.7.51 Comm 2 Total Illegal Number of Registers Errors (78H) ............................................ 43

5.7.52 Comm 2 Bus Activity Rate % (79H) ............................................................................ 43

5.7.53 Comm 2 Function Code Errors (7AH) ......................................................................... 43

5.7.54 Comm 2 Starting Address Errors (7BH)...................................................................... 43

5.7.55 Comm 2 Total Receive Errors (7CH) .......................................................................... 43

5.7.56 RXD CRC Errors Hi (7DH) .......................................................................................... 44

5.7.57 RXD CRC Errors Lo (Same as Hi) (7EH) ................................................................... 44

5.7.58 Comm 2 Overrun Errors (7FH) ................................................................................... 44

5.7.59 Comm 2 Parity Errors (80H) ....................................................................................... 44

5.7.60 Comm 2 Framing Errors (81H) ................................................................................... 44

5.7.61 Comm 2 Total UART Receive Errors (82H) ................................................................ 44

5.7.62 Not Used (83H) .......................................................................................................... 44

5.7.63 Clear Comm 2 UART Errors (84H) ............................................................................. 44

5.7.64 Clear Comm 2 Modbus Errors (85H) .......................................................................... 44

6.0EVENT LOGGING ................................................................................................................ 45

6.1.1 Faults .......................................................................................................................... 45

6.1.2 Warning ....................................................................................................................... 45

6.1.3 Alarm ........................................................................................................................... 45

6.1.4 Maintenance ................................................................................................................ 45

6.1.5 Setting Clock ............................................................................................................... 45

7.0MAINTENANCE ................................................................................................................... 48

7.1 General Maintenance ............................................................................................................... 48

7.2 Cleaning the Lenses/Light Rods .............................................................................................. 48

7.3 Sensitivity Check ...................................................................................................................... 49

7.3.1 Alarm Test ................................................................................................................... 49

7.3.2 TL105 Test Lamp ........................................................................................................ 50

7.3.3 TL105 Operating Instructions ...................................................................................... 50

7.3.4 TL105 Recharging Instructions ................................................................................... 50

7.4 Storage ..................................................................................................................................... 51

8.0TROUBLESHOOTING ......................................................................................................... 52

8.1 Troubleshooting ....................................................................................................................... 52

8.1.1 Introduction ................................................................................................................. 52

9.0CUSTOMER SUPPORT ....................................................................................................... 53

9.1 Other Sources of Help .............................................................................................................. 53

10.0 APPENDIX ................................................................................................................ 54

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Models FL3100H/3101H

 Warranty ................................................................................................................................... 54

10.1

10.2 Principle of Operation ............................................................................................................... 54

10.2.1 UV Detector - FL3100H and FL3101H........................................................................ 54

10.2.2 UV/IR Flame Detector - FL3100H ............................................................................... 55

10.2.3 COPM Circuitry ........................................................................................................... 55

10.2.4 Alarm Test ................................................................................................................... 56

10.2.5 Two-color Visual Indicators ......................................................................................... 56

10.2.6 Three-color Visual Indicators ...................................................................................... 56

10.3 Specifications ........................................................................................................................... 57

10.3.1 System Specifications ................................................................................................. 57

10.3.2 Mechanical Specifications ........................................................................................... 58

10.3.3 Electrical Specifications .............................................................................................. 58

10.3.4 Environmental Specifications ...................................................................................... 59

10.4 Approvals ................................................................................................................................. 59

10.5 Accessories .............................................................................................................................. 59

10.5.1 Mounting Swivel/Union ............................................................................................... 59

10.5.2 Mounting Bracket ........................................................................................................ 59

10.6 Storage ..................................................................................................................................... 59

10.7 Final Assembly ......................................................................................................................... 60

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Models FL3100H/3101H

Table of Figures

Figure 1: P/N 961-004 Union Swivel Mounting Hardware ................................................................................. 1

Figure 2: P/N 71172 Side View Bracket Assembly ............................................................................................ 2

Figure 3: P/N 71172 Top View Bracket Assembly ............................................................................................ 2

Figure 4: P/N 71172 Rear View Bracket Assembly ............................................................................................ 3

Figure 5: Field Terminations ............................................................................................................................... 3

Figure 6: Model FL3100H ..................................................................................................................................... 7

Figure 7: Model FL3101H ..................................................................................................................................... 7

Figure 8: FL3100H (UV/IR) Field of View ............................................................................................................ 9

Figure 9: FL3100H (UV/IR) Hydrogen Flame Detector Field of View ............................................................. 10

Figure 10: FL3101H (UV) Field of View ............................................................................................................. 11

Figure 11: P/N 961-004 Swivel Elbow Drawing ................................................................................................ 12

Figure 12: P/N 71072 Side View Mounting Bracket Drawing .......................................................................... 13

Figure 13: P/N 71072 Top View Mounting Bracket Drawing ........................................................................... 13

Figure 14: P/N 71072 Rear View Mounting Bracket Drawing ......................................................................... 14

Figure 15: FL3100H and FL3101H Outline Drawing ........................................................................................ 15

Figure 16: FL3100H and FL3101H Outline Drawing ........................................................................................ 15

Figure 17: FL3100H and FL3101H Field Terminations .................................................................................... 16

Figure 18: Detector Housing and Base ............................................................................................................ 17

Figure 19: Terminal Block Operation ................................................................................................................ 17

Figure 20: Protection Circuits for Relay Contacts .......................................................................................... 18

Figure 21: DIP switch Location ......................................................................................................................... 25

Figure 22: UV and IR Windows .......................................................................................................................... 49

Figure 23: Spectral Response of UV and IR Detectors ................................................................................... 55

Figure 24: P/N 71450 FL3100H (UV/IR), Final Assembly ................................................................................ 60

Figure 25: P/N 71451 FL3101H (UV), Final Assembly .................................................................................... 61

vii

Models FL3100H/3101H

Table of Tables

Table 1: TB2 Alarm Relay Connections ........................................................................................................... 18

Table 2: TB2 Warning Relay Connections ....................................................................................................... 19

Table 3: Fault Relay Connections ..................................................................................................................... 19

Table 4: Alarm Reset Terminal Connections ................................................................................................... 20

Table 5: Maximum Cable Requirements .......................................................................................................... 21

Table 6: Power Connections ............................................................................................................................. 21

Table 7: Maximum Cable Lengths for +24 VDC Supply .................................................................................. 21

Table 8: Connections for the Modbus Interface .............................................................................................. 22

Table 9: Connections for the Second Modbus Interface ................................................................................ 22

Table 10: Chassis Ground Connection ............................................................................................................ 22

Table 11: DIP Switch Options ............................................................................................................................ 25

Table 12: Data Format ........................................................................................................................................ 26

Table 13: Modbus Query Messages .................................................................................................................. 26

Table 14: Modbus Read Response Messages ................................................................................................. 27

Table 15: Modbus Write Query Message.......................................................................................................... 27

Table 16: Modbus Write Response Message ................................................................................................... 28

Table 17: Exception responses ......................................................................................................................... 29

Table 18: Exception Code Field ........................................................................................................................ 29

Table 19: Operational Mode Commands .......................................................................................................... 33

Table 20: Fire Status Mode ................................................................................................................................ 34

Table 21: Status/Error ........................................................................................................................................ 34

Table 22: Model Type ......................................................................................................................................... 35

Table 23: EEPROM Override .............................................................................................................................. 36

Table 24: Setting Options .................................................................................................................................. 37

Table 25: Comm 1 Baud Rate ............................................................................................................................ 37

Table 26: Comm 1 Data Format ......................................................................................................................... 38

Table 27: Remote Reset ..................................................................................................................................... 38

Table 28: Remote Alarm Test ............................................................................................................................ 39

Table 29: Clear COPM Faults Function ............................................................................................................ 39

Table 30: Comm 2 Baud Rate ............................................................................................................................ 42

Table 31: Comm 2 Data Format ......................................................................................................................... 42

Table 32: Event Logging Registry Table ......................................................................................................... 47

Table 33: Troubleshooting Table ...................................................................................................................... 52

Table 34: Locations ............................................................................................................................................ 53

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Models FL3100H/3101H

Quick Start Guide

Mount and Wire the Detector

Pay special attention to the conduit seal entry (Canadian Electrical Code Handbook Part 1,
Section 18-154). Also, lithium based grease is applied to the O-ring seal between the back­plate and housing, as additional protection to avoid water ingression into the housing. Mount
detector using swivel mount or mounting bracket hardware.

Figure 1: P/N 961-004 Union Swivel Mounting Hardware

1

Models FL3100H/3101H

Figure 2: P/N 71172 Side View Bracket Assembly

Figure 3: P/N 71172 Top View Bracket Assembly

2

Models FL3100H/3101H

Figure 4: P/N 71172 Rear View Bracket Assembly

Term #

Terminal Block 2 Terminal Block 1

Term #

10

1
2
3
4
5
6
7
8
9

10

9
8
7
6
5
4
3
2
1

Figure 5: Field Terminations

3

Models FL3100H/3101H

Apply Power to the Detector

Two light emitting diodes (LEDs) are visible through the UV window (the larger window on
UV/IR units). Immediately upon powering up the detector, the LEDs will start blinking alternately

- green and red in the two-color configuration and green, yellow, and red in the three-color
configuration. The flashing pattern lasts 10 seconds. Upon the detector entering the “Ready”
mode, the green LED will flash off 1 second, every 10 seconds. Section 10.2.6 (Three-color
Visual Indicators) describes the flashing scheme of the product configuration with three LEDs.

Testing the Detector Using the TL105

Test the integrity of your system by using the TL105 test lamp. The original configuration (i.e.
sensitivity and relay options) can be changed by using the “Switch Selectable Options” (Table

11) and then changing the dipswitch settings located on the bottom of the power board (SW1).
The instrument is now ready to operate. Please consult the manual for more information on the

instrument’s many features.

NOTE: If you have any problems in the set-up or testing of the detector, please refer to the

“Troubleshooting Section”, or call the factory direct.

Worldwide service is available by calling:

Lake Forest, California
(24 hr. service)

Houston, Texas

Ireland

Singapore

United Arab Emirates

United Kingdom

Toll Free: [phone]
Phone: [phone]
Fax: [phone]

Phone: [phone]
Fax: [phone]

Phone: [phone]
Fax: [phone]

Phone: [phone]
Fax: [phone]

Phone: [phone]
Phone: [phone]

Fax: [phone]

4

Models FL3100H/3101H

1.0 Introduction

1.1 Protection for Life

General Monitors’ mission is to benefit society by providing solutions through industry leading
safety products, services, and systems that save lives and protect capital resources from the
dangers of hazardous flames, gases, and vapors.

This manual provides instruction for installing and operating General Monitors’ Models
FL3100H and FL3101H for UV/IR and UV Only Flame Detection. While the FL3100H/3101H is
easy to install and operate, this manual should be read in full and the information contained
herein understood before attempting to place the system in service.

The safety products you have purchased should be handled carefully and installed, and
maintained in accordance with the respective product instruction manual. Remember these
products are for your safety.

1.2 Special Warnings

Through engineering design, testing, manufacturing techniques, and rigid quality control,
General Monitors supplies the finest flame detection systems available. The user must
recognize his responsibility for maintaining the flame detection system in operational condition.
Installation and maintenance must be carried out by suitably skilled and competent personnel
only.

The FL3100H UV/IR and FL3101H UV only flame detectors contain components, which can be
damaged by static electricity. Special care must be taken when wiring the system, to ensure
that only the connection points are touched.



Special Conditions For Safe Use



 This equipment uses an external non-metallic coating and may therefore generate an

ignition-capable level of electrostatic charge under certain extreme conditions. The
user should ensure that the equipment is not installed in a location where it may be
subjected to external conditions (such as high-pressure steam) which might cause a
build-up of electrostatic charge on non-conducting surfaces. Additionally, cleaning of
the equipment should be done only with a damp cloth.

 In accordance with EN 60079-1:2014/ IEC 60079-1:Ed 7 Clause 11.3, the 4 x M6

housing retaining bolts are Class A2-70 304 Stainless Steel.

 In accordance with EN 60079-1:2014/ IEC 60079-1:Ed 7 Clause 5.1, the flameproof

joints are not intended to be repaired.

1.3 System Integrity Verification

Commissioning Safety Systems

Before power up, verify wiring, terminal connections and stability of mounting for all integral
safety equipment including, but not limited to:

 Power supplies
 Control modules
 Field detection devices

5

Models FL3100H/3101H

 Signaling / output devices
 Accessories connected to field and signaling devices

After the initial application of power (and any factory specified warm-up period) to the safety
system, verify that all signal outputs, to and from devices and modules, are within the
manufacturers’ specifications. Initial testing should be performed per the manufacturers’
recommendations and instructions.

Proper system operation should be verified by performing a full, functional test of all component
devices of the safety system, ensuring that the proper levels of alarming occur.
Fault/Malfunction circuit operation should be verified.

Periodic Testing of Field Devices

Periodic testing should be performed per the manufacturers’ recommendations and
instructions. Testing procedures should include, but not be limited to:

 Verify integrity of all optical surfaces and devices
 For flame detectors, use the appropriate test lamp

When testing produces results outside of the manufacturers’ specifications, replacement of the
suspect device(s) should be performed as necessary.

Periodic System Verification

The following system verifications should be performed at least annually:
Verify wiring, terminal connections and stability of mounting for all integral safety equipment

including, but not limited to:

 Power supplies
 Control modules
 Field detection devices
 Signaling / output devices
 Accessories connected to field and signaling devices

Proper system operation should be verified by performing a full, functional test of all component
devices of the detection system, ensuring that the proper levels of alarming occur.
Fault/Malfunction circuit operation should be verified.

Maintenance intervals should be independently established through a documented procedure,
including a maintenance log maintained by plant personnel or third party testing services.

6

Models FL3100H/3101H

2.0 Product Description

2.1 General Description

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 General Monitors’ Model FL3100H is an ultraviolet/infrared (UV/IR) flame detector (Figure

6). It detects the ultraviolet and infrared spectral regions of 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 Model FL3101H is an ultraviolet (UV) flame detector (Figure 7). It only
responds to UV and has been optimized for speed of response.

Both units may be used with the General Monitors TA402A trip amplifier, FL802 controller, or
with other equipment, which accepts the 4 to 20 mA output. They may also be interfaced
directly with alarm/suppression devices or with switched input modules using integral relays. If
HART is used with the above controllers, you must use the special 1.25 mA to 20 mA mode.

NOTE: The Model FL802 is not CE Marked and, therefore, cannot be supplied to the EU.
The Models FL3100H and FL3101H features include:

 Compact unitized design
 Continuous optical path monitoring (COPM)
 4-20 mA, alarm relays, and Modbus RTU RS-485 standard (Dual Modbus optional)

(HART optional)

 Wide field of view
 High false alarm immunity and visual indicators

Figure 6: Model FL3100H

7

Figure 7: Model FL3101H

Models FL3100H/3101H

3.0 Installation

WARNING: Suitably skilled and competent personnel must carry out installation and

maintenance.

3.1 Tools Required

 “T” Allen head wrench to remove detector head from detector base (included with flame

detector).

 Flat head screwdriver maximum 3/16 in (5 mm) width for terminal block connections.
 Adjustable wrench for conduit, or cable gland connections.

3.2 Choosing Product Locations

Several variables are involved in selecting the locations to install detectors to ensure proper
flame detection. There are no hard and fast rules defining the optimum location. Following are
some general suggestions that should be considered in regard to particular conditions at the
site where the unit(s) are being installed:

3.2.1 Detector Field of View

The FL3100H and FL3101H flame detectors have a maximum cone of vision of 120 and 140
maximum respectively. This cone has its vertex at the center of the detector (Figure 8 and
Figure 10).

3.2.2 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 50ft (15.2m) for a heptane fire with a surface area of 1 sq. ft.
(0.093m2).

3.2.3 Environmental Factors

Mounting should be as free from shock and vibration as possible and convenient for visual
inspection and cleaning.

Detectors mounted in dirty atmospheric conditions will require frequent inspection, cleaning,
and sensitivity checking. Make sure the field-of-view of the detector is not obstructed by the
cover or nearby objects.

Observe the ambient temperature range for the specific model (Section 10.3.4). For outdoor
installations or other areas exposed to intense, direct solar radiation, the detector may reach
temperatures well above specifications. For these installations, a shade or cover may be
required to keep the detector temperature within specifications.

Avoid conditions that would allow ice build-up on the optical detector windows. Complete icing
over of the detector window(s) can result in fault conditions. Mount away from sources of
electrical noise where possible. A constant UV source detected by the unit will cause the
detector to go into FAULT after 9 – 10 minutes of exposure. The source must be removed or
the detector must be repositioned. (UV detectors can pick-up arc welding up to 2–3 miles
away). 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.

8

Models FL3100H/3101H

Figure 8: FL3100H (UV/IR) Field of View

9

Models FL3100H/3101H

Figure 9: FL3100H (UV/IR) Hydrogen Flame Detector Field of View

NOTE: Response Times and Field of View data have been derived by testing the Model

FL3100H flame detector with a flame from a round 6 inch diameter burner. The
hydrogen gas was supplied from a high pressure tank via a reducing regulator, set to
12 psi. This produces a flame 6 inches in height. The FL3100H-Hydrogen detector can
be tested by the TL105 as far as 40 feet. These are typical values and different results
may occur depending on the variation of each fire.

NOTE: The FL3100H-Hydrogen detector is not FM approved.

10

Models FL3100H/3101H

0°

75°

70°

60°

45°

30°

15°

50'

45'

40'

35'

30'

25'

20'

15'

10'

15°

30°

45°

60°

70°

75°

+15°

0°

-15°

+30°

'
0
5

(±5°)

HORIZONTAL

SENSITIVIT Y

100%
75%, 50%

+75°

+70°

+60°

+45°

'

'

'

'

'

'

5

0

0

5

3

3

4

4

'
5
2

'

0

5

0

2

1

1

VERTICAL

0°

- 15°

- 30°

- 45°

- 60°

- 70°

- 75°

100%

50'
50'
50'
50'
50'
25'

<20'

TABLE CHART

50%

75%

40'

45'

40'

45'

40'

45'
45'

40'

45'

<15'

<20'

<15'

<20'

TABLE CHART

0°

100%

50'
50'
50'
50'
50'
25'
20'

100%

50'
50'
50'

50' 30'

<20' <15'

HORIZONTAL

± 15°
± 30°
± 45°
± 60°
± 70°
± 75°

VERTICAL

0°
+ 15°
+ 30°
+ 45°
+ 60°
+ 70°
+ 75°

75%

45'
45'
45'
45'
45'

<15'

75% 50%

45'
45'
45'
45'50'40'

<15'20'

<20'
<20'

50%

45'
45'
45'
45'

45'
<15'
<15'<15'

45'
45'
45'
45'
20'

-30°

-45°

-60°

-70°

(±5°)

VERTICAL

-75°

SENSITIVITY

100%
75%

50%

Figure 10: FL3101H (UV) Field of View

11

Models FL3100H/3101H

3.3 Mounting and Wiring

WARNING: The conduit entries should be sealed per the Canadian Electrical Code

Handbook (Part 1, Section 18-154) or NEC 500-3d. An additional benefit of
conduit seals is the prevention of water entering the housing through the
conduit entry.

WARNING: Unused cable entry holes must be sealed with an approved stopping plug.

Red caps supplied by GM are for dust protection only and must not be left
on the unit when installed.

The FL3100H/FL3101H flame detectors should be mounted pointing downward so that
dust/moisture will not accumulate on the optical window(s). The detector(s) should be
mounted in locations which will inhibit people or objects from obscuring the detector’s
cone of vision.

Detectors should be mounted such that the conduit or cable gland entries are
pointed downward. See above warning for conduit entries. For cable glands and
stopping plugs, the threads should be sealed with Castrol EP and boots fitted over
the cable gland to prevent water ingress at the cable-to-gland junction. Mounting
hardware should be used as shown in Figure 12, and Figure 13.The overall
dimensions of the detector and mounting hardware are shown in Figure 15 and
Figure 16.

NOTE: General Monitors does not recommend the use of cable shoes or crimps on any

junction box or housing wiring terminals. Poor crimping can cause a bad
connection when the unit experiences temperature variations.

Figure 11: P/N 961-004 Swivel Elbow Drawing

12

Models FL3100H/3101H

Figure 12: P/N 71072 Side View Mounting Bracket Drawing

Figure 13: P/N 71072 Top View Mounting Bracket Drawing

13