MSA FL500 Operating Manual

Operating Manual

FL500 UV/IR Flame Detector

Order No.: 10193213/00

CR 800000028862

MSAsafety.com

WARNING!

Read this manual carefully before using and maintaining the device. The device will perform as designed
only if it is used and maintained in accordance with the manufacturer's instructions. Otherwise, it can fail to
perform as designed and persons who rely on this device for their safety could sustain serious injury or
death.

The warranties made by General Monitors with respect to the product are voided if the product is not
installed, used and serviced in accordance with the instructions in this manual. Protect yourself and your
employees by following the instructions.

Read and observe the WARNINGS and CAUTIONS inside. For any additional information relative to use or
repair, call 1-800-MSA-2222 during regular working hours.

1000 Cranberry Woods Drive
Cranberry Township, PA 16066
USA
Phone 1-800-MSA-2222
Fax [phone]

For your local MSA contacts please go to our website www.MSAsafety.com

©

MSA 2018. All rights reserved

Contents

1 Safety Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Correct Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Liability Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3.1 Limited Express Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3.2 Sole Remedy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3.3 Exclusion of Consequential Damage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Continuous Optical Path Monitoring (COPM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3 LED Operation Mode Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2 Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.1 Field of View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.2.2 Environmental Factors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.3 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.4 Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.5 Terminal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.5.1 TB2, Alarm High Relay Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.5.2 TB2, Alarm Low Relay Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.5.3 TB1, Fault Relay Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.5.4 Alarm Reset Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.5.5 Analog Output, Modbus and HART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.6 Cable Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.7 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.8 Chassis Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.9 Fire Cards or Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.10 Cable Termination in a Nonhazardous Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

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4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.1 Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.2 Changing Device Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.2.1 Using the DIP Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.2.2 Using Modbus or HART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.3 Sensitivity Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.3.1 TL105 Test Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.3.2 Alarm Test Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.1 Regular Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.2 Cleaning the Optical Window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.3 Annual Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

FL500 UV/IR Flame Detector

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7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.1 Troubleshooting Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.2 Returning the Device for Repairs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.3 Removing the Device from Service Permanently . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.4 References and Other Sources of Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.1 System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.2 Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

8.3 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

8.4 Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

9 Approvals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

FL500 UV/IR Flame Detector

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Safety Regulations

1 Safety Regulations

1.1 Correct Use

WARNING!

 Do NOT install or operate the device until you read and understand the instructions in this manual.

Only qualified personnel are approved to operate and do maintenance on the device.
NE PAS INSTALLER NI UTILISER CET ÉQUIPEMENT SANS AVOIR D'AVOIR LU ET COMPRIS
TOUTES LES DIRECTIVES, TOUS LES AVERTISSEMENTS ET TOUTES LES MISES EN
GARDE DANS LE MANUEL D’INSTRUCTIONS.

 Do NOT remove the cover from the device when the device is in operation or in an explosive atmo-

sphere.
NE PAS OUVRIR LORSQUE SOUS TENSION OU EN PRÉSENCE D’UNE ATMOSPHÈRE
EXPLOSIVE.

 Install a conduit seal within 18 in. (46 cm) of the device enclosure.

INSTALLER LE JOINT DU CONDUIT DANS UN INTERVALLE DE 18 PO DU BOÎTIER.

 Repair or alteration of the device beyond the scope of the maintenance instructions in this manual

or by anyone other than General Monitors or General Monitors-approved service personnel can
cause incorrect operation of the device and put persons who use this device for their safety at risk
of serious injury or death.

 An approved electrician must do electrical wiring.
 All wiring must satisfy the requirements of the applicable National Electrical Code (NEC), Canadian

Electrical Code (CEC), and local electrical safety codes.

 Make sure that field connections to the FL500 are applicable for the location and obey the wiring

requirements of the NEC, CEC, and local electrical safety codes.

 Do not install or operate a device that is damaged.
 Install the device in a location away from conditions (such as high-pressure steam) where electro-

static charge can collect on nonconducting surfaces. This equipment uses an external nonmetallic
coating. If extreme levels of electrostatic charge collect, ignition can occur.

 Make sure that there is no physical blockage from permanent objects such as structures and

equipment or temporary objects such as personnel and vehicles in the sensor's field of view. If
there is physical blockage in the sensor's field of view, the device cannot accurately monitor the
area for flame.

 Make sure that there is no ice, dirt, or debris on the optical window. Blockage of the optical window

can result in a Fault condition.

 During a Fault condition, the device does not monitor the area for flame.
 Keep the device safe from vibration and mechanical shock, which can cause damage.
 Do NOT connect or disconnect equipment when power is supplied to the device. Doing so can

result in serious damage to the equipment. The warranty does not apply to equipment that is
damaged in this way.

 The device has components that can be damaged by electrostatic discharge (ESD). When you do

work with the device wiring, be careful to touch only the connection points. The warranty does not
supply coverage for components that are damaged by ESD.

 Use ONLY a damp cloth to clean the device. Otherwise, electrical shock or ignition from ESD can

occur.
Failure to obey these warnings can result in serious injury or death.

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For dimensional information about the flameproof joints, contact General Monitors.

FL500 UV/IR Flame Detector

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Safety Regulations

1.2 Liability Information

General Monitors accepts no liability in cases where the product has been used inappropriately or not
as intended.

The selection and use of this product must be under the direction of a qualified safety professional
who has carefully evaluated the specific hazards of the jobsite where it will be used and who is
completely familiar with the product and its limitations. The selection and use of this product and its
incorporation into the safety scheme of the jobsite is the exclusive responsibility of the employer.

Changes and modifications not expressly approved by the manufacturer will void the user's authority
to operate the equipment.

1.3 Warranty

1.3.1 Limited Express Warranty

General Monitors warrants the product to be free from mechanical defects and faulty workmanship for
a period of two (2) years from the date of sale by General Monitors, provided that the product is main­tained and used in accordance with General Monitors' instructions and/or recommendations. General
Monitors makes no warranty concerning components or accessories not manufactured by General
Monitors, but will pass on to the Purchaser all warranties of manufacturer.

This warranty is valid only if the product is maintained and used in accordance with General Monitors'
instructions and/or recommendations. General Monitors shall be released from all obligations under
this warranty in the event that repairs or modifications are made by persons other than its own or
authorized service personnel, or if the warranty claim results from accident, alteration, misuse, or
abuse.

No agent, employee or representative of General Monitors has authority to bind General Monitors to
any affirmation, representation or modification of the warranty concerning the product.

THIS WARRANTY IS STRICTLY LIMITED TO THE TERMS HEREOF AND IN LIEU OF ALL OTHER
WARRANTEES, EXPRESSED, IMPLIED, OR STATUTORY INCLUDING, BUT NOT LIMITED TO,
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE.

1.3.2 Sole Remedy

It is expressly agreed that Purchaser's sole and exclusive remedy for breach of the above warranty,
for any tortious conduct of General Monitors, or for any other cause of action, shall be the repair or
replacement, at General Monitors' option, of any equipment or parts thereof, which after examination
by General Monitors is proven to be defective. Replacement equipment and/or parts will be provided
at no cost to Purchaser, F.O.B. Seller's Plant. Failure of General Monitors to successfully replace any
nonconforming equipment or parts shall not cause the remedy established hereby to fail of its essen­tial purpose.

1.3.3 Exclusion of Consequential Damage

Purchaser specifically understands and agrees that under no circumstances will General Monitors be
liable to Purchaser for economic, special, incidental, or consequential damages or losses of any kind
whatsoever, including but not limited to, loss of anticipated profits and any other loss caused by reason
of non-operation of the goods. This exclusion is applicable to claims for breach of warranty, tortious
conduct or any other cause of action against General Monitors.

FL500 UV/IR Flame Detector

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6

2 Description

2.1 Overview

The FL500 ultraviolet/infrared (UV/IR) flame detector, referred to hereafter as the "FL500" or "device,"
uses a UV radiation-sensitive phototube and an IR detector to sense specific wavelengths in the UV
and IR spectral regions. The UV and IR detectors send signals about changes in the intensity of UV
and IR radiation to a microcomputer to activate Alarm Low, Alarm High, and Fault output. A flicker
discrimination circuit in the IR circuitry prevents false alarms caused by lightning, arc-welding, hot
objects, and other sources of radiation. The inherent flickering of a flame supplies the necessary
modulation to activate the IR circuit.

Description

Ultraviolet Region Infrared Region

UV Detector’s

Spectral

Sensitivity

Visible Region

Sun’s Radiation
Reaching Earth

IR Detector’s

Spectral

Sensitivity

Relative Energy

185 nm 260 nm

Fig. 1 Spectral Response of UV and IR Radiation Detectors

Wavelength

2.95 μm

(Hydrogen Detector)

If the device senses only UV radiation (such as arc welding) or only IR radiation (such as a large
modulating hot object), an alarm does not occur. If the device senses both UV and IR radiation in the
correct combination and intensity, as set by an algorithm in the microcomputer, the device identifies a
fire and sends the following output:

• 4 - 20 mA signal

• Immediate Alarm Low output

• Time-delayed Alarm High output

• RS-485 Modbus RTU output

• HART communication

4.35 μm

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The FL500 has the following features:

• Compact unitized design

• Wide field of view

• Continuous optical path monitoring (COPM)

• 4 - 20 mA source or sink, alarm relays, and Modbus RTU RS-485 standard

• HART 7 communication

• False alarm prevention

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Description

Fig. 2 FL500 UV/IR Flame Detector

The FL500 is compatible with the General Monitors TA402A trip amplifier, FL802 controller, and other
equipment that accepts 4 - 20 mA output. The device can be connected directly with alarm and
suppression devices or switched input modules through integral relays. If the HART protocol is used
with the FL802 controller, it is necessary to use the special HART signal (1.25 - 20 mA).

Because the FL802 controller is not CE marked, it cannot be supplied to the European
Union (EU).

2.2 Continuous Optical Path Monitoring (COPM)

COPM does a check of the device's optical path (from the internal UV and IR detectors through an air
gap then the optical window) and related electronic circuitry every 2 minutes. If the optical window is
blocked by unwanted objects such as ice, dirt, or debris for two consecutive checks, the device acti­vates the following Fault output:

• 2.0 mA signal

• Fault relay de-energizes

• Modbus signal

After a COPM Fault occurs, COPM occurs every 30 seconds until the Fault condition is removed.
When the Fault condition is removed, COPM continues every 2 minutes.

Because COPM does a check of the optical path every 2 minutes and two consecutive
checks must fail before a Fault occurs, it can be up to 3 minutes before the device iden­tifies a blockage.

Refer to Section 5.2 "Cleaning the Optical Window" for maintenance instructions.

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FL500 UV/IR Flame Detector

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2.3 LED Operation Mode Definitions

The LEDs show the following modes of operation for the device.

Device Status Alternate Mode Standard Mode

No Power All LEDs OFF
Initial Power On All LEDs blink alternately for 10 s

Green LED = ON

Ready/Normal

Fault - COPM

Fault - Other

Alarm Low

Alarm High

Yellow LED = OFF
Red LED = OFF
Green LED = ON Green LED = OFF
Yellow LED = Blinking slowly (1 Hz)
Red LED = OFF
Green LED = ON Green LED = OFF
Yellow LED = ON
Red LED = OFF
Green LED = ON Green LED = OFF
Yellow LED = OFF
Red LED = Blinking slowly (1 Hz)
Green LED = ON Green LED = OFF
Yellow LED = OFF
Red LED = ON

Description

Green LED = ON with heartbeat
(5 s ON, 0.5 s OFF)

FL500 UV/IR Flame Detector

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3 Installation

WARNING!

 Do not install or operate a device that is damaged.
 Install the device in a location away from conditions (such as high-pressure steam) where electro-

static charge can collect on nonconducting surfaces. This equipment uses an external nonmetallic
coating. If extreme levels of electrostatic charge collect, ignition can occur.

 Make sure that there is no physical blockage from permanent objects such as structures and

equipment or temporary objects such as personnel and vehicles in the sensor's field of view. If
there is physical blockage in the sensor's field of view, the device cannot accurately monitor the
area for flame.

 Keep the device safe from vibration and mechanical shock, which can cause damage.

Failure to obey these warnings can result in serious injury or death.

3.1 Required Tools

• 5 mm Allen wrench (included with the device)

• Flat-blade screwdriver, maximum 1/8 in. width

• No. 2 Philips screwdriver

• 10 mm Allen wrench

• Adjustable wrench

Installation

3.2 Locations

Use the information in Section 3.2.1 "Field of View" and Section 3.2.2 "Environmental Factors" to
select the best location to install the device.

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3.2.1 Field of View

Gas Performance:
HEPTANE

65°

60°

55°

45°

30°

15°

0°

20’

25’

30’

35’

40’

45’

50’

55’

60’

65’

70’

75’

80’

85’

90’

15°

30°

45°

55°

60°

65°

65°

60°

55°

45°

30°

15°

0°

20’25’30’35’

40’

45’50’

55’60’

65’70’

75’80’

85’90’

15°

30°

45°

55°

60°

65°

HorizontalHigh MedLow

HorizontalHigh MedLow

Gas Performance:
HEPTANE

90’ 55’ 45’

55’ 45’

55’ 45’

90’

90’

75’

0°

± 15°

30°

- 30°

45°

75’- 60°

50’ 40’ 30’65°

50’ 40’ 30’- 65°

- 45°

60°

90’ 55’ 45’

55’ 45’

55’ 45’

90’

90’

75’

0°

± 15°

30°

- 30°

45°

60’- 60°

50’ 40’ 30’65°

50’ 40’ 30’- 65°

- 45°

60°

Installation

Fig. 3 Heptane Field of View

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Installation

Gas Performance:
METHANE

65°

60°

55°

45°

30°

15°

0°

20’

25’

30’

35’

40’

45’

50’

55’

60’

65’

70’

75’

80’

15°

30°

45°

55°

60°

65°

65°

60°

55°

50°

45°

30°

15°

0°

20’

25’

30’

35’

40’45’

50’

55’60’

65’

70’75’

80’

15°

30°

45°

55°

50°

60°

65°

HorizontalHigh MedLow

Gas Performance:

METHANE

VerticalHigh MedLow

80’ 60’ 45’

80’

0°

± 15°

30°

- 30°

40°

80’- 45°

65’ 50’ 45’ 55°

65’ 50’ 45’- 55°

40’ 35’60°

35’ 35’- 60°

- 40°

45°

80’ 60’ 45’

80’ 50’

80’ 50’

35’

35’

65’ 45’

65’ 45’

0°

± 15°

30°

− 30°

40°

− 40°

45°

− 45°

50°

− 50°

55°

− 55°

50’ 35’

60°

60’ 35’

− 60°

Fig. 4 Methane Field of View

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Installation

45°

50°

55°

0°

40’

35’

30’

25’

20’

15’

10’

60°

15°

30°

40°

30°

15°

25’

0°

30’35’40’

15’20’

15°

30°

40°

45°

50°

55°

60°

Fig. 5 Methanol Field of View

15°

30°

40°40°

45°45°

50°50°

55°55°

60°60°

Gas Performance:
METHANOL

HorizontalHigh MedLow

40’ 30’ 25’0°

± 15°

30°

− 30°

± 40°

45°

− 45°

40’ 30’ 25’50°

40’ 30’ 25’− 50°

20’55°

20’− 55°

25’ 20’60°

25’ 20’− 60°

Gas Performance:
METHANOL

HorizontalHigh MedLow

10’

40’ 30’ 25’0°

± 15°

30°

− 30°

40°

− 40°

50° 40’ 30’ 25’

− 50° 40’ 30’ 25’

55° 20’

− 55° 20’

60°

30’ 20’

30’ 20’

− 60°

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Installation

45°

50°

55°

0°

60’

55’

50’

45’

40’

35’

30’

25’

20’

15’

10’

60°

15°

30°

40°

30°

15°

50’55’60’

0°

25’

30’35’40’45’

15°

30°

40°

45°

50°

55°

60°

Fig. 6 Propane Field of View

15°

30°

40°40°

45°45°

50°50°

55°55°

60°60°

Gas Performance:
PROPAN E

HorizontalHigh MedLow

± 15°

30°

− 30°

40°

− 40°

− 45°

55°

60’ 45’ 25’0°

60’ 45’ 20’

60’ 45’ 20’− 55°

45’ 25’60°

45’ 30’− 60°

25’45°

25’

Gas Performance:
PROPAN E

HorizontalHigh MedLow

10’

15’20’

± 15°

− 30°

− 40°

− 45°

60’ 45’ 25’0°

30°

40°

55°

35’

25’

35’

25’

25’

20’45°

25’

60’

60’− 55°

50’60°

50’− 60°

20’

FL500 UV/IR Flame Detector

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Installation

45°

50°

55°

0°

60’

55’

50’

45’

40’

35’

30’

25’

20’

15’

10’

60°

15°

30°

40°

30°

15°

0°

15°

30°

40°

45°

50°

55°

60°

Fig. 7 Ethane Field of View

15°

30°

40°40°

45°45°

50°50°

55°55°

60°60°

Gas Performance:
ETHANE

HorizontalHigh MedLow

± 15°

− 30°

40°

− 40°

− 45°

− 50°

− 60°

60’ 40’ 30’0°

30°

40’ 30’

45°

50°

60°

40’ 30’

30’ 25’

30’ 25’

60’

60’

55’

55’

Gas Performance:
ETHANE

HorizontalHigh MedLow

10’15’20’25’30’35’40’45’50’55’60’

± 15°

− 30°

40°

− 40°

− 45°

− 50°

− 60°

60’ 40’ 30’0°

30°

40’ 30’

45°

50°

60°

40’ 30’

30’ 25’

30’ 25’

60’

60’

55’

55’

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Installation

45°

50°

55°

0°

55’

50’

45’

40’

35’

30’

25’

20’

15’

10’

60°

15°

30°

40°

30°

15°

0°

15°

30°

40°

45°

50°

55°

60°

Fig. 8 Butane Field of View

15°

30°

40°40°

45°45°

50°50°

55°55°

60°60°

Gas Performance:
BUTAN E

HorizontalHigh MedLow

± 15°

− 30°

40°

− 40°

− 45°

− 50°

− 55°

− 60°

55’ 35’ 25’0°

30°

45°

50°

55°

60°

25’ 20’

25’ 20’

20’

20’

55’

55’

45’

45’

25’

25’

Gas Performance:
BUTAN E

HorizontalHigh MedLow

10’15’20’25’30’35’40’45’50’55’

± 15°

− 30°

40°

− 40°

− 45°

− 55°

− 60°

55’ 35’ 25’0°

30°

25’

25’

45°

55°

60°

25’ 20’

25’ 20’

55’

55’

45’

45’

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3.2.2 Environmental Factors

WARNING!

Do NOT install the device in an area where temperatures will be more than 185°F (85°C).
Failure to obey this warning can result in serious injury or death.

The operating temperature range for the device is -67°F to 185°F (-55°C to 85°C). For outdoor instal­lations or other areas that are exposed to intense, direct solar radiation, the device may reach
temperatures well above specifications.

Make sure that the device is in an area where ice, dirt, or debris cannot collect on the optical window.
If ice, dirt, or debris collects on the optical window, a COPM Fault occurs.

To maintain the device enclosure's IP66/IP67 and Type 6P ingress ratings, use a nonhardening
sealant to install stopping plugs on conduit/cable entries that are not used.

3.3 Mounting

Use the mounting bracket (PN 71370-1) and hardware to install the device on a wall, pole, or other
surface. The design of the mounting bracket lets you adjust optical alignment while keeping the device
in a fixed position.

To attach the mounting bracket to drywall, install at least two fasteners to the stud behind the drywall
to give support for the weight of the device. The recommended fastener is a 3-in. #12 screw.

Use the dimensions shown in Figures 10 through 14 to install the device correctly. Make sure that the
device:

• Is in a location where personnel and objects cannot cause a blockage of the field of view

• Is in a location that is convenient for visual inspection and cleaning

• Is in a location where ice, dirt, or debris cannot collect on the optical window

• Points downward to prevent dust and moisture from collecting on the optical window

Installation

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
temperature variations occur.

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Installation

Fig. 9 FL500 Outline Drawing, Front View

Fig. 10 FL500 Outline Drawing, Side View

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Fig. 11 FL500 and Mounting Bracket, Side View

Installation

Fig. 12 FL500 and Mounting Bracket, Top View

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Fig. 13 FL500 and Mounting Bracket, Rear View

Installation

3.4 Wiring

WARNING!

 An approved electrician must do electrical wiring.
 All wiring must satisfy the requirements of the applicable NEC, CEC, and local electrical safety

codes.

 Install a conduit seal within 18 in. (46 cm) of the device enclosure.
 Make sure that all wiring is applicable for use at an ambient temperature of 199.6ºF (93.1°C).
 Before installing the wiring for the device, disconnect the power source.
 Read all electrical warnings and wiring requirements before connecting power to the device.
 The device wiring can be damaged by electrostatic discharge (ESD). When you do work with the

device wiring, be careful to touch only the connection points. The warranty does not supply
coverage for components that are damaged by ESD.

 Do NOT install wiring in a hazardous atmosphere. Otherwise, electrical shock or ignition can occur.

Failure to obey these warnings can result in serious injury or death.

Install all wiring connections through the base entries to the terminal block (TB). The terminal block
accepts 14 - 22 AWG (2.1 - 0.3 mm

2

) stranded or solid-core wire.

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FL500 UV/IR Flame Detector

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Fig. 14 FL500 Housing and Base

Remove the insulation from each wire to 0.25 in. (0.64 cm).
Use the correct cables for the ambient temperature where the device is installed.

Installation

Fault 2 Alarm Reset

Fault C

Fault 1

Data −

RS485

Control Device

PLC, DCS, ETC

COM (24 V-return)

+−

Power Supply

Fig. 15 Wiring Diagram

Data +

No Connection

0-20 mA

+ 24 VDC

Chassis Ground

Protection Circuits for Relay Contacts

WARNING!

12345678910

11 12 13 14 15 16 17 18 19 20

TB2TB1

No Connection

No Connection

Alarm Test

Alarm Low 2

Alarm Low 1 Alarm Low Relay

Alarm Low C

Alarm High C

Alarm High 1

Alarm High 2

Normally

Open Switch

Normally

Open Switch

Alarm High Relay

US

Protect relay contacts from transient and over-voltage conditions. Attach a clamp to all inductive loads
(bells, buzzers, relays) on dry relay contacts as shown. Inductive loads that do not have a clamp
attached can cause voltage spikes of more than 1000 Volts. Voltage spikes of this magnitude can
cause false alarms and damage to the contacts.

Failure to obey this warning can result in serious injury or death.

(1) To connect the wire to the terminal block, install the conductor in the connection space as shown.

(2) Use a flat-blade screwdriver to tighten the related screw terminal.

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3.5 Terminal Connections

TERM#TERM#

TB2TB1

11 12 13 14 15 16 17 18 19 20

12345678910

Chassis

COM (24 V - Return)

+ 24 VDC

0-20 mA

No Connection

Data +

Data −

Fault 1

Fault C

Fault 2

Alarm Low 2

Alarm Low 1

Alarm Low C

Alarm High C

Alarm High 1

Alarm High 2

Alarm Test

No Connection

No Connection

Alarm Reset

There are 20 terminal connections. The following sections give descriptions and specifications for
each connection.

Installation

3.5.1 TB2, Alarm High Relay Connection

Fig. 16 Field Terminations

The output for the SPDT Alarm High relay has a time delay that can be set for 2, 4, 8, or 10 seconds.
Alarm High output can be normally energized or normally de-energized, latching or non-latching.

All options can be set through Modbus, HART, or the DIP switch. Refer to Section 4.2 "Changing
Device Settings" for instructions.

TB2
Position

7 C Common Common
6 1 Normally Closed Normally Open
5 2 Normally Open Normally Closed

Alarm High
Relay

Relay Contact
(De-Energized)

Relay Contact
(Energized)

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3.5.2 TB2, Alarm Low Relay Connection

The output for the SPDT Alarm Low relay is immediate. Alarm Low output can be normally energized
or normally de-energized, latching or non-latching.

All options can be set through Modbus, HART, or the DIP switch. Refer to Section 4.2 "Changing
Device Settings" for instructions.

Installation

TB2
Position

Alarm Low
Relay

Relay Contact
(De-Energized)

Relay Contact
(Energized)

8 C Common Common
9 1 Normally Closed Normally Open
10 2 Normally Open Normally Closed

3.5.3 TB1, Fault Relay Connection

The standard configuration for the SPDT Fault relay is normally energized and non-latching. This
configuration cannot be changed.

The Fault relay is activated during the time-out function, a low-power or loss-of-power condition, and
a COPM Fault. For the duration of these conditions, the Fault relay de-energizes and the signal for
analog output decreases to 0 mA (2 mA for a COPM Fault).

TB1
Position

Fault Relay

Relay Contact
(De-Energized)

Relay Contact
(Energized)

9C C C
8 1 Normally Closed Normally Open
10 2 Normally Open Normally Closed

3.5.4 Alarm Reset Switch

Use the Alarm Reset switch to set latched Alarm High or Alarm Low output that is no longer applicable
back to its initial condition.

Do the following:

(1) Connect one contact of a normally open momentary switch to TB1 Terminal 3.

(2) Connect the other contact to COM (device Common).

(3) Push and release the Alarm Reset switch.

Position Function

TB2 POS 11 RESET
TB2 POS 14 TEST

Multiple devices cannot be put in a daisy-chain configuration to use the Alarm Reset
switch. Each latching Alarm Low and Alarm High output must be reset manually.

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3.5.5 Analog Output, Modbus and HART

The 0 - 20 mA output is equivalent to the following analog output:

Condition Modbus HART (Normal) HART (Special)

Startup 0 - 0.2 mA 3.5 ±0.2 mA 1.25 ±0.2 mA
Fault 0 - 0.2 mA 3.5 ±0.2 mA 1.25 ±0.2 mA
COPM Fault 2.0 ±0.2 mA 3.5 ±0.2 mA 2.0 ±0.2 mA
Ready 4.05 ±0.2 mA 4.05 ±0.2 mA 4.05 ±0.2 mA
IR 8.0 ±0.2 mA 8.0 ±0.2 mA 8.0 ±0.2 mA
UV 12.0 ±0.2 mA 12.0 ±0.2 mA 12.0 ±0.2 mA
Alarm Low 16.0 ±0.2 mA 16.0 ±0.2 mA 16.0 ±0.2 mA
Alarm High 20.0 ±0.2 mA 20.0 ±0.2 mA 20.0 ±0.2 mA

The maximum analog output load, including wiring, is 600 ohms.

In normal HART mode, the current output does not go below 3.5 mA. Modbus sends 2.0 mA output
for COPM (as if HART was not there) to make a constant Modbus program available. The digital HART
protocol sends the actual current output. When the Alarm High or Alarm Low relays are latched, the
highest output current is also latched. The output current goes back to 4.0 mA when the Alarm Reset
switch relay is activated.

The special HART mode lets the current decrease to 1.25 mA. The HART protocol continues to
operate. Use the special HART mode with products that require 2 mA output for COPM, 1.5 mA output
when the device is offline, and 0 mA output for a Fault condition.

The Modbus protocol is used to configure the device or to find the status of the device.
For information about Modbus, refer to the FL500 Modbus Communication Operating Manual

(PN 10193214).
For information about HART, refer to the FL500 HART Communication Operating Manual

(PN 10193215).

TB1 Position Connection

6DATA +
7DATA -

Installation

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FL500 UV/IR Flame Detector

24

3.6 Cable Lengths

Use the following cable lengths (maximum 50-ohm loop) for interfaces with impedance devices that
have 250-ohm input.

Installation

Cable AWG Run (ft) Cable (mm

2

) Run (m)

14 9000 2.50 2750
16 5800 1.50 1770
18 3800 1.00 1160
20 2400 0.75 730
22 1700 0.50 520

Use the following cable lengths (maximum 20-ohm loop) for a 24 Vdc power supply.

Cable AWG Run (ft) Cable (mm

2

) Run (m)

14 6588 2.08 2013
16 4146 1.31 1266
18 2608 0.823 796
20 1642 0.519 501
22 1055 0.33 321

3.7 Power Supply

The voltage range for the power supply is 20 - 36 Vdc at the device. Low voltage occurs at approxi­mately 18.5 Vdc.

TB1 Position Connection

324 Vdc
2COM

3.8 Chassis Ground

Use this connection to ground the device when you do any work with the wiring. General Monitors
recommends that the chassis be grounded at all times.

TB1 Position Connection

1 CHAS GND

3.9 Fire Cards or Panels

General Monitors factory-fits end-of-life (EOL) and Alarm High resistors for devices that are wired
together to do monitoring through standard fire cards.

When the FL500 is used with a General Monitors Model IN042 card, the Alarm High resistor is set to
470 ohm and the EOL resistor is set to 5.6K. The EOL resistor is onboard the Model IN042 card and
can be selected through the DIP switch.

European Union (EU) approved applications: Make sure that interconnecting cables
have an overall screen, or screen and armor. Cables BS5308 Part 2, Type 2, or equiv­alent are approved for use. To make a positive electrical connection, make sure that the
cable armor connects to an applicable cable gland at the device.

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FL500 UV/IR Flame Detector

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3.10 Cable Termination in a Nonhazardous Area

WARNING!

Do NOT connect or disconnect equipment when power is supplied to the device. Doing so can result
in serious damage to the equipment. The warranty does not supply coverage for equipment that is
damaged in this way.

Failure to obey this warning can result in serious injury or death.

Connect the cable armor to safety earth in a nonhazardous area.
Connect the cable screen (drain wire) to instrument earth in a nonhazardous area.
Connect the power supply OV return to instrument earth in a nonhazardous area.
Keep interconnecting cables isolated from the power cable and other noisy cables, such as cables for

radio transmitters, welders, switch mode power supplies, inverters, battery chargers, ignition systems,
generators, switch gear, arc lights, and other high-frequency or high-power switching process equip­ment. Keep a separation of at least 3 ft (1 m) between instrument and other cables. An increased
separation is necessary for long, parallel cable runs. Do not put instrument cable trenches close to
lightning conductor earthing pits.

Installation

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4 Operation

WARNING!

 Make sure that there is no physical blockage from permanent objects such as structures and

equipment or temporary objects such as personnel and vehicles in the sensor's field of view. If
there is physical blockage in the sensor's field of view, the device cannot accurately monitor the
area for flame.

 Make sure that there is no ice, dirt, or debris on the optical window. Blockage of the optical window

can result in a Fault condition.

 During a Fault condition, the device does not monitor the area for flame.

Failure to obey these warnings can result in serious injury or death.

4.1 Start-Up

Before you supply power to the device, do the following:

• Replace the red dust cap with an applicable cable gland.

• Disconnect external devices such as automatic extinguishing fire suppression systems to prevent
activation.

• Make sure that the settings for the DIP switch are in the correct configuration. Refer to Section

4.2.1 "Using the DIP Switch" for instructions.

• Make sure that the device is mounted and wired correctly.

• Make sure that there is no blockage of the field of view for each device.

• Make sure that the optical window and reflectors are clean. Refer to Section 5.2 "Cleaning the
Optical Window" for cleaning instructions.

• Make sure that the power supply is connected correctly.

Apply power to the device. Each device starts a self-test start-up sequence. For the first 10 seconds,
the device sends 0 mA output, the Fault relay stays de-energized, and the green, yellow, and red
LEDs flash. After this 10-second period, the device sends 4 mA output, the Fault relay is energized,
the red LED goes off, and the green LED comes on and flashes every 5 seconds.

After the start-up sequence is complete, do a sensitivity check. Refer to Section 4.3 "Sensitivity
Check" for instructions.

Operation

US

4.2 Changing Device Settings

All device settings can be changed through Modbus, HART, or the DIP switch. Settings made through
Modbus and HART override settings made through the DIP switch.

4.2.1 Using the DIP Switch

To change device settings through the DIP switch, do the following:

(1) Use a flat-blade screwdriver to remove the screws that attach the detector head to the base

assembly.

(2) Find the DIP switch.

(3) Make the applicable switch assignments.

(4) Cycle power to the device.

FL500 UV/IR Flame Detector

27

Operation

Fig. 17 DIP Switch Location

On the DIP switch, the nomenclature "ON/CLOSED" is used when the switch is pushed in on the side
labeled "ON" or "CLOSED" (opposite the side labeled "OPEN"). The nomenclature "OFF/OPEN" is
used when the switch is pushed in on the side with the number related to the switch position or the
side labeled "OPEN".

The time delay is the amount of time an Alarm Low condition continues before an Alarm High condition
occurs.

Option

Position 12345678910

High Sensitivity OFFOFF-------­Medium Sensitivity ONOFF-------­Low Sensitivity OFFON-------­2-second Alarm Time Delay--OFFON-----­4-second Alarm Time Delay--OFFOFF-----­8-second Alarm Time Delay--ONOFF-----­10-second Alarm Time Delay--ONON-----­Alarm High Non-Latching ----OFF----­Alarm High Latching ----ON----­Alarm Low Non-Latching -----OFF---­Alarm Low Latching -----ON---­Alarm High Normal Energized------ON--­Alarm High Normal

De-Energized
Alarm Low Normal Energized-------ON-­Alarm Low Normal

De-Energized
Alternate LED ---------ON
HART Enabled --------ON-

------OFF---

-------OFF--

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FL500 UV/IR Flame Detector

28

4.2.2 Using Modbus or HART

To use the HART protocol, it is necessary to select the applicable current (1.25 mA or 3.5 mA). The
factory default setting is 3.5 - 20 mA. This setting can only be changed through HART or Modbus.

Settings for Modbus and HART can be changed through the DIP switch.
For information about changing device settings through Modbus, refer to the FL500 Modbus Commu-

nication Operating Manual (PN 10193214).
For information about changing device settings through HART, refer to the FL500 HART Communica-

tion Operating Manual (PN 10193215).

4.3 Sensitivity Check

Use the TL105 Test Lamp or the Alarm Test feature to make sure that each device operates correctly.
If the device does not operate correctly, refer to Section 7 "Troubleshooting" for instructions.

4.3.1 TL105 Test Lamp

The TL105 test lamp is a battery operated, rechargeable test source used to make sure that operation
of the device is correct. The test lamp has a high-energy broadband radiation source that emits suffi­cient energy in both the UV and IR spectra to activate the UV and IR detectors. To simulate a fire, the
TL105 test lamp automatically flashes at the correct rate for different models. When fully charged, the
internal batteries operate continuously for 30 minutes. When the battery charge goes below the level
necessary to supply the correct intensity, an internal low-voltage circuit stops operation of the test
lamp until the batteries are recharged. For recharging instructions, refer to the TL105 Instruction
Manual (PN MANTL105).

Operation

Fig. 18 TL105 Test Lamp

(1) Make sure that the batteries are fully charged.

(2) Stand 15 - 20 ft (5 - 6 m) away from the device.

(3) Point the TL105 test lamp directly at the front of the device.

(4) Shake the test lamp from side to side or up and down. Motion increases the simulation of flames

flickering and increases the response of the device to the test lamp.
If device operation is correct, after a few flashes of the test lamp, an Alarm Low condition occurs.
If the test lamp stays pointed at the device for the period of the time-delay setting, an Alarm High

condition occurs.

To conserve the battery charge, operate the test lamp only as long as necessary to do
a test of each device.

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4.3.2 Alarm Test Feature

To use the Alarm Test feature, do the following:

(1) Connect one contact of a normally open, momentary switch to TB1 Terminal 4.

(2) Connect the other contact to TB1 Terminals 9 and 10 (COM).

(3) Activate the switch for the period set for the time delay (2 - 10 seconds).

• If the device senses the source, it immediately sends Alarm Low output, then the time-delayed

Alarm High ouput. After 1 to 8 seconds, the device resets the non-latching Alarm Low and Alarm
High conditions. Latching Alarm Low and Alarm High conditions stay latched until they are reset
manually. Refer to Section 3.5.4 "Alarm Reset Switch" for instructions.

• If the device does not sense the source, it sends Fault output and does the test again every

10 seconds.

The Alarm Test feature can be used through Modbus and HART.

Multiple devices cannot be put in a daisy-chain configuration to do testing for Alarm High
output.

Operation

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5 Maintenance

WARNING!

 Repair or alteration of the device beyond the scope of the maintenance instructions in this manual

or by anyone other than General Monitors or General Monitors-approved service personnel can
cause incorrect operation of the device and put persons who use this device for their safety at risk
of serious injury or death.

 The device has components that can be damaged by electrostatic discharge (ESD). When you do

work with the device wiring, be careful to touch only the connection points. The warranty does not
supply coverage for components that are damaged by ESD.
Failure to obey these warnings can result in serious injury or death.

General Monitors recommends that maintenance intervals be set through a documented procedure
that includes a maintenance log kept by plant personnel or third-party testing services.

5.1 Regular Maintenance

WARNING!

Maintenance

Use ONLY a damp cloth to clean the device. Otherwise, electrical shock or ignition from ESD can
occur.

Failure to obey this warning can result in serious injury or death.

Clean the optical window every 30 days at a minimum. Refer to Section 5.2 "Cleaning the Optical
Window" for instructions. Do sensitivity checks regularly. Refer to Section 4.3 "Sensitivity Check" for
instructions.

Examine, clean the optical window, and do sensitivity checks more frequently for
devices that are installed in dirty areas.

5.2 Cleaning the Optical Window

WARNING!

Use ONLY Industrial Strength Windex® with Ammonia D (General Monitors PN 10272-1) to clean the
optical window. The optical window material is sapphire, not glass. Using any other commercial glass
cleaner will cause damage to the optical window. The warranty does not supply coverage for optical
windows that are damaged in this way.

Failure to obey this warning can result in serious injury or death.

Remove debris and film buildup on the optical window and reflectors regularly to make sure that the
device has the correct sensitivity and to prevent COPM Faults. General Monitors recommends that
you clean the optical window and reflectors every 30 days at a minimum. Clean the optical window
and reflectors more frequently for devices that are installed in dirty areas.

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FL500 UV/IR Flame Detector

31

(1) Use a clean, soft, lint-free cloth, tissue, or cotton swab soaked with Industrial Strength Windex

with Ammonia D to clean the optical window.

(2) Use a clean, dry, cloth to rub the optical window until it is clean. Do NOT touch the lens with your

fingers.

(3) Let the optical window air-dry fully.

5.3 Annual Maintenance

Make sure that all wiring and terminal connections are connected correctly.
Make sure that the mounting for all integral safety equipment, including but not limited to following

components, is stable:

• Power supplies

• Control modules

• Field detection devices

• Signaling devices

• Accessories connected to field and signaling devices

Maintenance

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32

6Storage

WARNING!

Keep the device safe from vibration and mechanical shock, which can cause damage.
Failure to obey this warning can result in serious injury or death.

Keep the device in a clean area with an ambient temperature of -40°F to 185°F (-40°C to 85°C) and
a humidity range of 0% to 95% RH noncondensing.

For extended storage, do the following:

(1) If possible, keep the device in the mold as shipped by the manufacturer.

(2) Install the red dust caps in the cable entry holes.

(3) Seal the device and a desiccant in a plastic bag.

(4) Seal the plastic bag inside another plastic bag.

Storage

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Troubleshooting

7 Troubleshooting

WARNING!

Repair or alteration of the device beyond the scope of the maintenance instructions in this manual or
by anyone other than General Monitors or General Monitors-approved service personnel can cause
incorrect operation of the device and put persons who use this device for their safety at risk of serious
injury or death.

During a Fault condition, the device does not monitor the area for flame.

7.1 Troubleshooting Table

The troubleshooting table gives information about common faults that occur during commissioning
and operation. These common faults can be repaired by a competent operator.

Before you do the following corrective actions, inhibit or disconnect the external alarm wiring to
prevent an accidental Alarm High condition.

Problem Possible Cause Corrective Action

No output signal and all LEDs
are off

2 mA signal, green LED is off,
yellow LED is blinking

0 mA, 1.25 mA, or 3.5 mA
signal, and yellow LED is on

Constant 8 mA signal with no
known radiation to device

Constant 12 mA signal with no
known radiation to device

Constant 16 mA or 20 mA
signal (Alarm Low or Alarm
High) with no known radiation
at device

No dc power to the device

Device is in COPM Fault

Low supply voltage or other
fault

Background IR radiation at
device

Background UV radiation at
device

Background UV radiation at
device

Make sure that 24 Vdc is
applied with the correct polarity.

Clean the optical window and
reflectors. Refer to Section 5.2
"Cleaning the Optical Window"
for instructions.

Make sure that the supply
voltage is ≥20 Vdc at the
device. If it is, cycle the power
to see if the fault is removed.

Put a cover over the optical
window for 10 seconds. If the
device senses background IR,
and the analog output still
shows 8 mA, contact technical
support for more trouble­shooting.

Put a cover over the UV part of
the optical window for 10
seconds. If the device senses
background UV, and the analog
output still shows 12 mA,
contact technical support for
more troubleshooting.

Put a cover over the optical
window for 10 seconds. If the
analog output still shows
16 mA or 20 mA, contact tech­nical support for more trouble­shooting.

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FL500 UV/IR Flame Detector

34

Troubleshooting

If the corrective actions recommended in the troubleshooting table do not correct operation of the
device, return the device to General Monitors for repair.

7.2 Returning the Device for Repairs

Use the following contact information to return a device to General Monitors for repair. Include a
detailed written description of the problem.

UNITED STATES

26776 Simpatica Circle
Lake Forest, CA 92630

IRELAND

Ballybrit Business Park
Galway
Republic of Ireland

MIDDLE EAST

P.O. Box 54910
Dubai Airport Freezone
United Arab Emirates

SINGAPORE

35 Marsiling Industrial Estate, Road 3
#04-01
Singapore 739257

Additional locations are available at www.MSAsafety.com.

7.3 Removing the Device from Service Permanently

EU member states must discard devices in accordance with the Waste Electrical and Electronic
Equipment (WEEE) Directive. All other countries or states must discard devices in accordance with
existing federal, state, and local environmental control regulations.

Phone: [phone]
Email: [e-mail]

Phone: [phone]
Email: [e-mail]

Phone: [phone]
Email: [e-mail]

Phone: [phone]

US

7.4 References and Other Sources of Help

Look for documentation, white papers, and product literature for our complete line of safety products
at http://www.MSAsafety.com/detection.

For more information about the use and performance standards for the device, refer to the following
publications:

• BS EN 54-10:2002, Fire detection and fire alarm systems - Flame detectors - Point detectors.

British Standards Institute, London, United Kingdom, 2002.

• BS EN 50130-4, Electromagnetic compatibility. Product family standard: Immunity requirements

for components of fire, intruder, hold up, CCTV, access control and social alarm systems. British
Standards Institute, London, United Kingdom, 2011.

• BS EN 61000-6-4:2007+A1:2011, Electromagnetic compatibility (EMC). Generic standards. Emis-

sion standard for industrial environments. British Standards Institute, London, United Kingdom,

2007.

FL500 UV/IR Flame Detector

35

8 Specifications

8.1 System Specifications

Specifications

Application

Device location

Environmental ratings Type 6P, IP66/IP67
UV Detector pass band 185 - 260 nanometers

IR Detector center wave­length

Typical alarm activation
response times

Zeta value

Field of view Refer to Section 3.2.1 "Field of View" for information.

UV/IR Flame
Detection

Class I, Division 1, Groups A*, B, C, and D
Class II, Division 1, Groups E, F, and G
Class III
Ex db IIC T5 Gb
Ex tb IIIC T100°C Db
II 2 G D

-50°C to 85°C under FM, -55°C to 85°C under
CSA/ATEX/IECEx

4.35 mm

Fuel Distance (ft)

n-Heptane

Methane 80 <10
Methanol 40 12
Propane 60 <7
Ethane 60 <3
Butane 55 <3

Zeta = -0.001
The margin of error in the range measurement is esti-

mated at ±5 ft (±1.5 m) due to wind conditions and flame
turbulence.

90
60

Response Time
(s)

6
<3

US

* Applicable to FM approvals only.

Notes:
Response times and field of view data were derived by testing the device with a 1 ft

cup of heptane on top of a 1-in. layer of water was ignited for each test. These are typical values. The
variation of each fire can cause different results.

BS EN 54-10 identifies the limit of the field of view to ±25 degrees because of the requirements of the
Directional Dependence test. This result is from indoor benchtop testing with a Bunsen burner as the
fire source, rather than the outdoor flame testing used to identify the field of view in Section 3.2.1
"Field of View".

FL500 UV/IR Flame Detector

2

heptane fire. One

36

8.2 Mechanical Specifications

Enclosure material 316 Stainless Steel
Color Red
Finish TGIC polyester powder coat
Height 6.4 in. (16.2 cm)
Width 5.0 in. (12.7 cm)
Depth 4.3 in. (11.0 cm)
Weight 9.4 lb (4.3 kg)

Cable Entry

Earth Terminals

8.3 Electrical Specifications

2 x ¾ in. NPT (M25 adapters included for some config­urations)

8-32 x 3/8 Philips pan-head screw, stainless steel,
zinc-plated, green dye; external stainless steel tooth
lock washer included. Applicable for connection of

2

4mm

or smaller.

Specifications

Nominal supply voltage 24 Vdc
Supply voltage range 20 to 36 Vdc (measured at device)
Maximum supply current 200 mA during COPM only
Typical current 80 to 150 mA
Maximum output signal load 600 ohms
Output signal range 0 to 20 mA *
Fault signal 0 to 0.2 mA *
COPM fault signal 2.0 ±0.2 mA *
Ready signal 4.0 ±0.2 mA
IR only signal 8.0 ±0.2 mA
UV only signal 12.0 ±0.2 mA
Alarm Low signal 16.0 ±0.2 mA
Alarm High signal 20.0 ±0.2 mA

North American Approved Applications:
SPDT, 5A @ 250 Vac, or 5A @ 30 Vdc resistive max.

Relay contact ratings

European Union (EU) Approved Applications:
SPDT, 5A 30V RMS/42.4V Peak, or 5A @ 30 Vdc

resistive max.
Modbus RTU

RS-485 output

128 devices in series max.
(247 devices with repeaters)
Baud rate: 2400, 4800, 9600, or 19200 bps
Fully HART 7 FieldComm compliant. Refer to the

HART

FL500 HART Communication Operating Manual
(PN 10193215).

HART impedance RX = 50 K CX = 5 nF

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FL500 UV/IR Flame Detector

37

RFI/EMI protection Complies with BS EN 50130-4 and BS EN 61000-6-4
Status indicator Three LEDs identify status, fault, and alarm conditions

8.4 Environmental Specifications

Specifications

Operating temperature
range

Storage temperature range -40°F to 185°F (-40°C to 85°C)
Humidity range 0% to 95% RH noncondensing

False Alarm Source Distance from FL500 (ft) Trouble / False Alarm
Direct sunlight 3N
Reflected sunlight 3N

Arc weld dc 190A,
7014 rod

Arc weld ac 90A, 7014 rod 15 N
1500W electrical heater 2N
6000W electrical heater 2N
100W incandescent light 1N
300W incandescent light 1N
Two 34W fluorescent light 1N
500W halogen light 2N
100W UV backlight 3N
250W vapor lamp 3N

Two 25W tungsten incan­descent lamps

-67°F to 185°F (-55°C to 85°C)

15 N

3N

FL500 UV/IR Flame Detector

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38

9 Approvals

CSA (CSA 18.70180732X), FM, ATEX (Sira 18ATEX1073X), IECEx (SIR 18.0026X), HART Regis­tered, SIL 3 suitable.

Approvals

FL500 UV/IR Flame Detector

US

39

For local MSA contacts, please visit us at MSAsafety.com

Because every life has a purpose...