Spectrex SHARPEYE 20 User manual

Model 20/20MI
Mini Triple IR (IR3) Flame Detector
User Guide
Document ref: TM 787100, Rev. (Af), May 2019
8200 Market Blvd, Chanhassen, MN 55317, USA
Phone: [phone] Fax: [phone]
Website: www.spectrex.net; Email: [email protected]

Legal Notice
The SPECTREX SharpEye Optical Flame Detector described in this document is the property of
Rosemount.
No part of the hardware, software or documentation may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any language or computer
language, in any form or by any means, without prior written permission of Rosemount.
While great efforts have been made to assure the accuracy and clarity of this document,
Rosemount assumes no liability resulting from any omissions in this document, or from misuse
of the information obtained herein. The information in this document has been carefully
checked and is believed to be entirely reliable with all of the necessary information included.
Rosemount reserves the right to make changes to any products described herein to improve
reliability, function, or design, and reserves the right to revise this document and make
changes from time to time in content hereof with no obligation to notify any persons of
revisions or changes. Rosemount does not assume any liability arising out of the application or
any use of any product or circuit described herein; neither does it convey license under its
patent rights or the rights of others.
Warning: This manual should be carefully read by all
individuals who have or will have responsibility for using,
maintaining or servicing the product.
The detector is not field-repairable due to the meticulous
alignment and calibration of the sensors and the respective
circuits. Do not attempt to modify or repair the internal circuits
or change their settings, as this will impair the system's
performance and void the SPECTREX product warranty.

Release History
Rev
Date
Revision History
Prepared by
Approved
by
5
May 2017
Sixth Release
Jay Cooley
Shaul Serero
Af
May 2019
Seventh Release
Michal Heller
Udi Tzuri

TM 787100 Rev (Af), May 2019
v
Table of Contents
Model 20/20MI Mini Triple IR (IR3) Flame Detector ........................................ i
Legal Notice ...................................................................................................iii
Release History ..............................................................................................iv
About this Guide .............................................................................................xi
Abbreviations and Acronyms ........................................................................... xii
1Scope...................................................................................................... 13
1.1 Product Overview.................................................................................13
2Technical Description ............................................................................. 15
2.1 Features .............................................................................................15
2.2 Principles of Operation..........................................................................15
2.2.1 Hydrocarbon Fire Detection ............................................................15
2.2.2 Identifying the CO2 Peak................................................................15
2.2.3 Limitations of IR-IR Flame Detectors ...............................................16
2.2.4 Advantages of IR3 Technology ........................................................16
2.2.5 Modbus RS-485 ............................................................................16
2.2.6 Types and Models..........................................................................17
3Performance ........................................................................................... 21
3.1 Detection Sensitivity ............................................................................21
3.1.1 Standard Fire................................................................................21
3.1.2 Sensitivity Ranges .........................................................................21
3.1.3 Other Fuels ..................................................................................22
3.2 Cone of Vision .....................................................................................23
3.3 False Alarms Detection .........................................................................24
4Operation ............................................................................................... 27
4.1 Visual Indications.................................................................................27
4.2 Output Signals.....................................................................................28
4.2.1 Optional Latching ..........................................................................29
4.2.2 Built-In-Test .................................................................................29
4.3 Detector Mode Setup............................................................................29
4.3.1 Detector Setting............................................................................29
4.3.2 Sensitivity Ranges .........................................................................30
4.3.3 Alarm Delay .................................................................................30
4.3.4 Function Setup..............................................................................31

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SharpEyeTM IR3 Flame Detector User Guide
4.3.5 Addresses Setup ...........................................................................31
4.3.6 Detector Default Setup ..................................................................31
4.4 Built-In-Test........................................................................................32
4.4.1 General........................................................................................32
4.4.2 Principles .....................................................................................32
4.4.3 Automatic & Manual BIT.................................................................32
4.4.4 Manual BIT only ............................................................................33
5Technical Specifications ......................................................................... 35
5.1 Electrical Specifications.........................................................................35
5.2 Mechanical Specifications ......................................................................36
5.3 Environmental Specifications .................................................................37
6Installation Instructions......................................................................... 39
6.1 Scope.................................................................................................39
6.2 General Considerations .........................................................................39
6.3 Preparations for Installation ..................................................................40
6.4 Conduit Installation ..............................................................................40
6.4.1 Tilt Kit .........................................................................................40
6.4.2 Tilt installation ..............................................................................41
6.5 Detector Installation.............................................................................44
6.6 Wiring Function ...................................................................................44
6.7 Operation Mode ...................................................................................45
6.7.1 Programmable Function .................................................................45
6.7.2 Address .......................................................................................45
6.7.3 Alarm Delay .................................................................................46
7Operating Instructions ........................................................................... 47
7.1 Scope.................................................................................................47
7.2 Power Up ............................................................................................47
7.3 Reset .................................................................................................48
7.4 Functional Testing................................................................................48
7.4.1 Manual BIT Test ............................................................................48
7.4.2 Testing with Flame Simulator Model FS-1100....................................48
7.5 Safety Precautions ...............................................................................50
8Maintenance Instructions ....................................................................... 51
8.1 Maintenance Instrumentation and Personnel ...........................................51
8.2 Preventive Maintenance Procedures........................................................51
8.3 Periodic Maintenance Procedures ...........................................................51

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8.3.1 Power-Up Procedure ......................................................................51
8.3.2 Functional Test Procedure ..............................................................51
8.4 Maintenance Records............................................................................52
8.5 Troubleshooting...................................................................................52
8.5.1 Fault Indication .............................................................................52
8.5.2 False Alarm or Warning Indication ...................................................52
8.5.3 RS-485 Communications Network ...................................................52
Appendix A Typical Wiring Configurations ................................................ 53
Appendix B IR3 Flame Simulator FS-1100 ................................................ 57
B.1 Description..........................................................................................57
B.2 Operation ...........................................................................................58
B.3 Charging the Battery ............................................................................59
Appendix C FM Report for 20/20MI-3....................................................... 61
Technical Support ..........................................................................................68

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SharpEyeTM IR3 Flame Detector User Guide
List of Figures
Figure 1: Types and Models ................................................................................17
Figure 2: Flame Detector Assembly - Outline Drawing (Cable Output Option)............18
Figure 3: Flame Detector Assembly - Outline Drawing (Connector Output Option) .....19
Figure 4: Horizontal and Vertical Fields of View .....................................................23
Figure 5: Indication LEDs ...................................................................................27
Figure 6: IR3 Detector and Tilt Mount Assembly....................................................42
Figure 7: Tilt Mount Assembly - Outline Drawing ...................................................43
Figure 8: Using FS-1100 with the SharpEye MI-3 ..................................................50
Figure 9: FS-1100 reflector ................................................................................50
Figure 10: Connector Interface Option .................................................................53
Figure 11: Cable Interface Option........................................................................54
Figure 12: RS-485 Networking ............................................................................54
Figure 13: 4–20mA Wiring (Sink Option)..............................................................55
Figure 14: 4–20mA Wiring (Source Option) ..........................................................55
Figure 15: Typical Wiring for 4 Wire Controllers ....................................................56
Figure 16: Flame Simulator ................................................................................57
Figure 17: Mini IR3 Detector Target Point.............................................................58

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List of Tables
Table 1: Alarm Response Time versus Range –20/20MI-1 .....................................21
Table 2: Alarm Response Time versus Range –20/20MI-3 .....................................21
Table 3: Response Sensitivity Ranges ..................................................................22
Table 4: Sensitivity to Other Fire Sizes ................................................................22
Table 5: Immunity to False Alarm Sources ...........................................................24
Table 6: Welding Immunity Distance –20/20MI-1.................................................25
Table 7: Welding Immunity Distance –20/20MI-3.................................................25
Table 8: 20/20MI Status ....................................................................................28
Table 9: 20/20MPI Output Signals .......................................................................28
Table 10: Detector State with Output Signals .......................................................29
Table 11: Sensitivity ranges ...............................................................................30
Table 12: Time Delay.........................................................................................31
Table 13: Function Setup ...................................................................................31
Table 14: Default Function Setup ........................................................................32
Table 15: Contact Ratings ..................................................................................35
Table 16: 0–20mA Current Output ......................................................................35
Table 17: Tilt Kit P/N 787639..............................................................................40
Table 18: Detector Default Setup ........................................................................45

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About this Guide
This guide describes the SharpEye Model 20/20MI Mini Triple IR (IR3) Flame
detector and its features, and provides instructions on how to install,
operate, and maintain the detector.
This guide includes the following chapters and appendices:
•Chapter 1, Introduction, provides a general introduction and overview
of the product.
•Chapter 2, Technical Description, describes the detector’s features
and principles of operation.
•Chapter 3, Performance, describes the detector’s detection sensitivity
and capabilities.
•Chapter 4, Operation, describes the detector’s operation modes, user
interface, and indications.
•Chapter 5, Technical Specifications, lists the detector’s electrical,
mechanical, and environmental specifications.
•Chapter 6,Installation Instructions, describes preparations for
installation, wiring, and mode settings.
•Chapter 7, Operating Instructions, shows how to power up and test
the detector.
•Chapter 8, Maintenance and troubleshooting, describes basic
maintenance and support procedures.
•Appendix A, Typical Wiring Configurations, lists the wiring
instructions for connecting the detector, and provides examples of
typical wiring configurations.
•Appendix B, Long Range IR3 Flame Simulator,describes the flame
simulator that can be specifically used with SharpEye IR3 flame
detectors.
•Appendix C, FM Report for 20/20MI-3, describes the tests that were
performed on 4 sample products.

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SharpEyeTM IR3 Flame Detector User Guide
Abbreviations and Acronyms
Abbreviation
Meaning
AWG
American Wire Gauge
BIT
Built-In-Test
EMC
Electromagnetic Compatibility
EOL
End of Line
FOV
Field of View
IAD
Immune at Any Distance
IPA
Isopropyl Alcohol
IR
Infrared
JP5
Jet Fuel
Latched
Refers to relays remaining in the On state even after
the On condition has been removed
LED
Light Emitting Diode
LPG
Liquefied Petroleum Gas
mA
Milliamps (0.001 amps)
MODBUS
Master-slave messaging structure
N.C.
Normally Closed
N.O.
Normally Open
N/A
Not Applicable
NFPA
National Fire Protection Association
NPT
National Pipe Thread
VAC
Volts Alternating Current

Product Overview
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1Scope
1.1 Product Overview
The SPECTREX Model 20/20MI is a new version of the triple IR spectrum
flame detector designed to provide maximum fire protection. It uses
innovative technology of advanced digital signal processing to analyze the
dynamic characteristics of fire. Three sensitive IR channels process the
signals. Detection performance is controlled by a microprocessor and easily
adapted to all environments, applications, and requirements. The result is a
unique and superior flame detector, which provides excellent detection
sensitivity together with extreme immunity to false alarm.
This version of IR3 is S.M.T. Technology. The programmable functions are
available through an RS-485 port used with a standard PC and software
supplied by SPECTREX, or by a handheld computer.
To use the HOST software and to change the required functions, refer to
Manual TM784050 for instructions.

Principles of Operation
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2Technical Description
2.1 Features
The SharpEye Model 20/20MI Mini Triple IR (IR3) Flame Detector includes
the following features:
•Detection Range: up to 132ft/40m for a 1ft2/0.1m2fire
•Ultra High Immunity to False Alarms (see False Alarms Detection,
page 24)
•Advanced Digital Processing of the Dynamic Characteristics of
Fire: Flickering, Threshold correlation, and Ratio
•3 Separate IR Channels: Between 3–5 microns
•Field Programmable Sensitivity: 4 ranges
•2 Response Levels: Warning and Detection
•Solar Blind
•Microprocessor Based: Digital signal processing
•Built In Test (BIT): Manual and Automatic
•Electrical Interface:
•Dry contact relays
•Communications network RS-485
•4–20mA output
•Certification: EN54-10 approved per VdS
FM approved per FM3260
2.2 Principles of Operation
2.2.1 Hydrocarbon Fire Detection
The triple IR flame detector detects all conceivable types of hydrocarbon
fires, i.e. any fire which emits CO2.
2.2.2 Identifying the CO2 Peak
The hydrocarbon fire is characterized by a typical radiation emission. The
CO2peak emits intense radiation in the spectral band between 4.2µ–4.5µ
and weaker radiation intensity outside this spectral band.

Principles of Operation
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SharpEyeTM IR3 Flame Detector User Guide
2.2.3 Limitations of IR-IR Flame Detectors
CO2in the atmosphere attenuates the radiation in this spectral band.
(Absorption and emission of radiation always occur in the same band.) As a
result, the greater the distance between the detector and the fire, the
weaker the intensity of the radiation reaching the detector is (i.e. the CO2
attenuation increases). This phenomenon explains the limitations of the
existing IR-IR flame detectors in the market:
•Detection distance is restricted to 33ft/10m only.
•Their immunity to false alarm sources is limited.
2.2.4 Advantages of IR3 Technology
To overcome these limitations, SPECTREX devised an innovative concept of
utilizing an additional detection channel. Three channels collect more data
from the environment, providing a more accurate analysis and better
performance.
After careful investigation, 3 channels were selected which, when operating
jointly, provide optimal fire detection characteristics:
•Channel 1: 4.2–4.6µ
Fire - the CO2peak
•Channel 2: 4.0–4.2µ
Eliminates false alarms from high temperature sources
•Channel 3: 4.8–5.2µ
Eliminates false alarms from flickering of background radiation
Most IR sources which create misleading IR alarm stimuli, including the sun,
incandescent, and halogen lamps, electric arc discharges, electrical heaters,
etc., do not possess this unique spectral signature of fire.
The IR sensors of the detector respond only to flickering of radiation signals.
The signals are compared to a predetermined threshold. Processing of the
results from the 3 IR channels is performed by the board microprocessor.
The result is a much greater detection distance and a highly increased
ability to distinguish between fire and false alarms.
This sophisticated technology surpasses all other existing flame detection
techniques on the market today.
2.2.5 Modbus RS-485
For more advanced communication, the 20/20MI has an RS-485 Modbus-
compatible output that provides data communications from a network (up to
247 detectors) to a host computer on universal controller, for central
monitoring. This feature enables easy maintenance, and local or remote
diagnostic tools.

Principles of Operation
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2.2.6 Types and Models
The 20/20MI has 2 models:
•Standard - up to 40m
•Short range - up to 10m
Optional:
The output is via either a connector or a cable tail (up to 2m long).
Figure 1: Types and Models
F- FM and EN54-10 –only 20/20MI-1 is approved per EN54-10
* Cable for connection to junction box
** Mating connector supplied with detector

Principles of Operation
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SharpEyeTM IR3 Flame Detector User Guide
Figure 2: Flame Detector Assembly - Outline Drawing (Cable Output Option)

Principles of Operation
TM 787100 Rev (Af), May 2019
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Figure 3: Flame Detector Assembly - Outline Drawing (Connector Output
Option)