SharpEye 20MI Specifications

Mini Triple IR (IR3) Flame Detector
Model 20/20MI
User and Maintenance Manual
TM 787100, Rev. D April 2011
ATEX (Cenelec) Approved
Ex II 1 GD, EEx ia IIC T5 (+65ºC), T4 (+85ºC)
218 Little Falls Rd., Cedar Grove, NJ 07009 USA;
Phone: +1 (973) 239 8398 Fax: +1 (973) 239 7614
Web-Site: www.spectrex-inc.com ; Email: spectrex@spectrex.net
The SharpEye Optical Flame Detector described in this document is the property
of Spectrex, Inc.
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 Spectrex, Inc.
While great efforts have been made to assure the accuracy and clarity of this
document, Spectrex, Inc. 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. Spectrex Inc. 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. Spectrex, Inc. 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, Inc. Product warranty.
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
TABLE OF CONTENTS
1. Scope ..................................................................................................... 1
1.1 PRODUCT OVERVIEW .....................................................................................1
1.2 DOCUMENT OVERVIEW ...................................................................................2
2. Technical Description ............................................................................. 3
2.1 PRINCIPLES OF OPERATION............................................................................3
2.1.1 Hydrocarbon fire detection....................................................................3
2.1.2 Identifying the CO2 peak .......................................................................3
2.1.3 The limitations of IR-IR flame detectors ................................................3
2.1.4 The advantages of IR3 technology .......................................................3
2.1.5 Modbus RS-485....................................................................................4
2.1.6 Use in Hazardous Atmosphere .............................................................4
2.1.7 Types and Models ................................................................................5
3. Performance........................................................................................... 9
3.1 DETECTION SENSITIVITY .................................................................................9
3.2 CONE OF VISION .........................................................................................11
3.3 FALSE ALARMS PREVENTION ........................................................................12
4. Operation ............................................................................................. 14
4.1 VISUAL INDICATIONS ....................................................................................14
4.2 OUTPUT SIGNALS ........................................................................................15
4.2.1 Optional latching .................................................................................16
4.2.2 Built-In-Test ........................................................................................16
4.3 Detector Mode Setup .............................................................................16
4.3.1 Detector setting...................................................................................16
4.3.2. Detector’s various functions...............................................................16
4.3.3. Detector Default Set Up .....................................................................18
4.4 BUILT IN TEST .............................................................................................18
4.4.1. General ..............................................................................................18
4.4.2. Principles ...........................................................................................19
4.4.3. Automatic & Manual BIT ....................................................................19
4.4.4. Manual BIT only.................................................................................19
5.Technical Specifications ........................................................................ 20
5.1 ELECTRICAL SPECIFICATIONS .......................................................................20
5.2 MECHANICAL SPECIFICATIONS ......................................................................21
5.3 ENVIRONMENTAL SPECIFICATIONS.................................................................22
6. Installation Instructions......................................................................... 23
6.1 SCOPE ........................................................................................................23
6.2 GENERAL CONSIDERATIONS .........................................................................23
6.3 PREPARATIONS FOR INSTALLATION ................................................................24
6.4 CERTIFICATION INSTRUCTIONS ......................................................................25
6.5 CONDUIT INSTALLATION ................................................................................26
6.5.1 Tilt Kit P/N 787639 ..............................................................................26
6.5.2 Tilt installation (Figs. No. 6 and 7) ......................................................26
6.6 DETECTOR MOUNTING .................................................................................29
6.7 WIRING FUNCTION .......................................................................................29
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
6.8 OPERATION MODE .......................................................................................30
7. Operating Instructions .......................................................................... 31
7.1 SCOPE ........................................................................................................31
7.2 POWER-UP .................................................................................................31
7.3 RESET (ONLY WHEN OPTIONAL ‘LATCHING’ ALARM HAS BEEN SELECTED)...........31
7.4 FUNCTIONAL TESTING ...................................................................................31
7.4.1 Manual BIT Test .................................................................................32
7.4.2 Testing with Fire Simulator Model 20/20-310 (see Appendix B) ........32
7.5 SAFETY PRECAUTIONS .................................................................................33
8. Maintenance Instructions ..................................................................... 34
8.1 SCOPE ........................................................................................................34
8.2 MAINTENANCE INSTRUMENTATION AND PERSONNEL .......................................34
8.3 PREVENTIVE MAINTENANCE PROCEDURES.....................................................34
8.4 PERIODIC MAINTENANCE PROCEDURES .........................................................34
8.4.1 Power-Up Procedure ..........................................................................34
8.4.2 Functional Test Procedure..................................................................34
8.5 MAINTENANCE RECORDS..............................................................................34
8.6 TROUBLESHOOTING .....................................................................................35
8.6.1 Fault Indication ...................................................................................35
8.6.2 False Alarm or Warning Indication ......................................................35
Appendix A: Typical Wiring Configurations............................................... 37
Appendix B: Intrinsically Safe Connection For 20/20MI-XX-X-C............... 43
Appendix C: Long Range IR3 Fire Simulator............................................ 46
Appendix D: FM Report for 20/20 MI-3..................................................... 49
Appendix E: Ordering Information ............................................................ 53
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
LIST OF FIGURES
Figure 1: IR3 Flame Detector ............................................................................................ 6
Figure 2: Flame Detector Assembly - Outline Drawing (Cable output option)................. 7
Figure 3: Flame Detector Assembly - Outline Drawing (Connector output option) ......... 8
Figure 4: Horizontal and Vertical Fields of View ............................................................ 11
Figure 5: Indication LEDs................................................................................................ 14
Figure 6: IR3 Detector and Tilt Mount Assembly ............................................................ 27
Figure 7: Tilt Mount Assembly - Outline Drawing........................................................... 28
Figure 8: Connector Interface Option.............................................................................. 37
Figure 9: Cable Interface Option ..................................................................................... 38
Figure 10: RS-485 Networking......................................................................................... 39
Figure 11: 4-20mA Wiring (Sink Option)......................................................................... 40
Figure 12: 4-20mA Wiring (Source Option)..................................................................... 40
Figure 13: Typical Wiring For 4 Wire Controllers .......................................................... 41
Figure 14: 4-20 mA (sink) connection for Intrinsically Safe installation......................... 44
Figure 15: RS-485 connection for Intrinsically Safe installation..................................... 45
Figure 16: Fire Simulator................................................................................................. 46
Figure 17: Mini IR3 Detector Target Point...................................................................... 47
LIST OF TABLES
Table 1: Alarm Response Time Versus Range – 20/20MI-1............................................... 9
Table 2: Alarm Response Time Versus Range – 20/20MI-3............................................... 9
Table 3: Response Sensitivity Ranges............................................................................... 10
Table 4: Sensitivity to other fire sizes ............................................................................... 10
Table 5: Immunity To False Alarm Sources ..................................................................... 12
Table 6: Welding Immunity Distance – 20/20MI-1 .......................................................... 13
Table 7: Welding Immunity Distance – 20/20MI-3 .......................................................... 13
Table 8: Output Signals versus Detector State ................................................................. 15
Table 9: Sensitivity range ................................................................................................. 16
Table 10: Time Delay........................................................................................................ 17
Table 11: Function Setup.................................................................................................. 18
Table 12: Default function set up...................................................................................... 18
Table 13: Contact Ratings ................................................................................................ 20
Table 14: Tilt Kit............................................................................................................... 26
Table 15: The detector default set up ............................................................................... 30
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
IV
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
1. Scope
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 with extreme
immunity to false alarm.
This version of IR3 is approved intrinsically safe and manufactured in S.M.T.
Technology. The programmable functions are available through a RS-485 port
used with a standard PC and software supplied by Spectrex or by a handheld
computer.
The detector is ATEX certified to EEx ia IIC T5 (see Appendix B).
To use the HOST software and to change the required functions, refer to manual
TM784050 for instructions.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
1.2 Document Overview
This manual describes the detector and its features and provides instructions on
the installation, operation and maintenance.
This manual is divided into separate Sections as follows:
Section 1.
Scope - a general introduction and overview of the product and the
Manual, with a brief description of its content.
Section 2.
Section 3.
Section 4.
Technical Description - the detector’s theory of operation.
Performance - the detector features and capabilities.
Operation - the detector’s operation modes, user interface and
indications.
Technical Specifications - the Detector’s electrical, mechanical and
environmental specifications.
Section 5.
Section 6.
Section 7.
Section 8.
Appendix A.
Installation Instructions, including wiring and mode setting.
Operating Instructions and power-up procedures.
Maintenance Instructions and support procedures.
Typical Wiring Configurations - wiring diagrams for
installation.
Appendix B. Intrinsically Safe Wiring Configurations For 20/20MI-XX-X-C
Appendix C. Long Range IR3 Fire Simulator
Appendix D. FM Report for 20/20 MI-3
Appendix E. Ordering information
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
2. Technical Description
•
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•
•
•
•
•
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•
•
•
Detection Range: up to 132 ft (40m) for a 1 ft2 (0.1m2) fire.
Ultra High Immunity to False Alarms (see section. 3.3).
Advanced Digital Processing of the Dynamic Characteristics of Fire:
Flickering, Threshold correlation and Ratio.
Three Separate IR Channels: Between 3-5 microns.
Field Programmable Sensitivity: four ranges.
Two Response Levels: Warning & Detection.
Solar Blind
Microprocessor Based: Digital signal processing.
Built In Test (BIT): Manual and Automatic (see section. 4.4).
Electrical Interface:
o Dry contact relays (non-Ex version).
o Communication network RS-485.
o 4-20mA output.
Certification: ATEX (Cenelec)
2.1 Principles Of Operation
2.1.1 Hydrocarbon fire detection
The triple IR flame detector detects all conceivable types of hydrocarbon fires, i.e.
any fire, which emits CO2.
2.1.2 Identifying the CO2 peak
The hydrocarbon fire is characterized by a typical radiation emission. The CO2
peak emits intense radiation in the spectral band between 4.2 µ - 4.5 µ and
weaker radiation intensity outside this spectral band.
2.1.3 The limitations of IR-IR flame detectors
CO2 in 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 (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 (10 m) only.
• Their immunity to false alarm sources is limited.
2.1.4 The advantages of IR3 technology
To overcome these limitations, Spectrex Inc. devised an innovative concept of
utilizing an additional detection channel. Three channels collect more data from
the environment, permitting more accurate analysis and better performance.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
After careful investigation, three channels were selected which, when operating
jointly, provide optimal fire detection characteristics:
Channel 1:
4.2 µ - 4.6 µ
Fire - the CO2 peak
Channel 2:
4.0 µ - 4.2 µ
Eliminates false alarms from high temperature sources.
Channel 3:
4.8 µ - 5.2 µ
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 three 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.
This unique flame analysis capability (patent pending) has been
incorporated into the Triple-IR fire detector manufactured by Spectrex, Inc.
The result is a unique flame detector, which does not produce false alarms
and provides at the same time detection over greatly increased distances.
2.1.5 Modbus RS-485
For more advanced communication 20/20MI has a RS 485 modbus Compatible
output that provides Data communication from a network (up to 247 detectors) to
a host computer on universal controller for central monitoring.
This feature enables easy maintenance local and remote diagnostic tools.
2.1.6 Use in Hazardous Atmosphere
The 20/20MI certified version is intrinsically safe, classified to
ATEX EX II 1GD T 1 23 ºC
per SIRA 04 ATEX 2010 (for St.St housing)
and SIRA 04 ATEX 2011X (for aluminum housing)
EEx ia IIC T4 (Ta= -40ºC to + 85ºC)
EEx ia IIC T5 (Ta= -40ºC to + 65ºC)
The detectors are suitable for use in hazardous zones 0, 1 and 2 where group IIC
gasses and vapor are present.
In order to comply with the intrinsic safety requirement, barriers must be
incorporated (in the safe area) and there will be restrictions on cable types and
lengths. The detailed parameter will be dependent on the type of barrier used.
See Appendix B for I.S. wiring detail
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
2.1.7 Types and Models
The 20/20MI has two 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).
C - ATEX certified Per EX II 1GD, EEx ia IIC T4 or T5 (this model is available with
4-20mA and RS-485 outputs only)
F- FM – functional test only - model 20/20 MI-3.
* Cable for connection to junction box
** Mating connector supplied with detector
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Figure 1: IR3 Flame Detector
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Figure 2: Flame Detector Assembly - Outline Drawing (Cable output option)
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Figure 3: Flame Detector Assembly - Outline Drawing (Connector output option)
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
3. Performance
3.1 Detection Sensitivity
Detection sensitivity is the maximum distance at which the detector will reliably
detect a specific size of fire & typical type of fuel (standard fire).
Standard Fire:
A 1ft2 (0.1m2) Gasoline pan fire with max. wind speed of 6.5 ft/sec (2 m/sec).
Sensitivity Ranges:
The detector has four user selectable sensitivity ranges. For each range there are
two response levels.
1. WARNING (Pre-alarm)
2. ALARM
The detection distance, for the WARNING level, is approximately 10% higher than
the ALARM distance. Alarm response times for a “standard fire” at a specified
range are shown hereunder.
Table 1: Alarm Response Time Versus Range – 20/20MI-1
Sensitivity Range – ft (m)
Response Time (sec)
10
33 (10)
5
20
65 (20)
8
30
100 (30)
10
40
132 (40)
10
Table 2: Alarm Response Time Versus Range – 20/20MI-3
Sensitivity Range – ft (m)
Response Time (sec)
2.5
8.2 (2.5)
1
5
16.5 (5)
1
7.5
24.7 (7.5)
2
10
33 (10)
3
For some typical ambient conditions the Zeta parameter as defined in NFPA 72 for
the detector is 0.005 (1/meter).
Note:
Zeta parameters may vary significantly with changes in temp, air pressure,
humidity, visibility conditions, etc.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Other fuels
The detector will react to other types of fires as follows:
Pan Fire Size: 1ft2 (0.1m2)
Maximum Wind Speed: 6.5 ft/sec (2 m/sec)
Maximum Response Time: 10 sec
Table 3: Response Sensitivity Ranges
Type Of Fuel
Gasoline
N-Heptane
Alcohol 95%
JP4
Kerosene
Diesel Fuel
Methane*
Propane*
% Of Max. Distance at
each Sensitivity Range
100%
100%
75%
75%
75%
70%
30%
30%
* 0.5m plume fire
Table 4: Sensitivity to other fire sizes
Fuel
Fire Size
Jet Fuel
Jet Fuel
2 x 2 ft
2 x 2 ft
Detection Distance
Sensitivity
40
132 ft (40m)
20
65 ft (20m)
10
Maximum Detection Time
20/20MI-1
10 seconds
8 seconds
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
3.2 Cone Of Vision
Horizontal: 100°
Vertical:
100°
Figure 4: Horizontal and Vertical Fields of View
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
3.3 False Alarms Prevention
The detector will not provide an alarm or a warning signal as a reaction to the
radiation sources specified below.
Notes:
IAD = Immune at Any Distance.
All sources are chopped from 0 to 20Hz.
Table 5: Immunity To False Alarm Sources
Radiation Source
Sunlight
Indirect or reflected sunlight
Incandescent frosted glass light, 100 W
Incandescent clear glass light, rough service, 100 W
Fluorescent light with white enamel reflector, standard office or
shop, 40 W (or two 20 W)
Electric arc [12mm (15/32 in) gap at 4000 V alternating current,
60 Hz]
Arc welding [4 mm (5/32 in) rod; 240 A]
Ambient light extremes (darkness to bright light with snow, water,
rain, desert glare and fog)
Bright colored clothing, including red and safety orange.
Electronic flash (180 watt-seconds minimum output)
Movie light, 625 W quartz DWY lamp (Sylvania S.G.-55 or
equivalent)
Flashlight (MX 991/U)
Radiation heater, 1500 W
Radiation heater, 1000 W with fan
Quartz lamp (1000 W)
Mercury vapor lamp
Grinding metal
Lit cigar
Lit cigarette
Match, wood, stick including flare up
12
Immunity
Distance ft(m)
IAD
IAD
IAD
IAD
IAD
IAD
See Table 6, 7
IAD
IAD
IAD
6.5 (2)
IAD
IAD
IAD
10 (3)
IAD
IAD
1 (0.3)
1 (0.3)
10 (3)
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Table 6: Welding Immunity Distance – 20/20MI-1
Sensitivity
10
20
30
40
Detection Range
33 ft (10m)
65 ft (20m)
100 ft (30m)
132 ft (40m)
Immunity Distance
>10 ft (3m)
>15 ft (5m)
>20 ft (7m)
>33 ft (10m)
Table 7: Welding Immunity Distance – 20/20MI-3
Sensitivity
2.5
5
7.5
10
Detection Range
8.2 ft (2.5m)
16.5 ft (5m)
24.7 ft (7.5m)
33 ft (10m)
13
Immunity Distance
>2.5 ft (0.75m)
>5 ft (1.5m)
>7.5 ft (2.25m)
>10 ft (3m)
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
4. Operation
4.1 Visual Indications
One 3-color LED-indication is located in the detector front window:
Detector Status
Fault, BIT Fault
Normal
Warning
Alarm
LED color
Yellow
Green
Red
Red
Figure 5: Indication LEDs
14
LED mode
4 Hz flashing
1 Hz flashing
2 Hz flashing
Steady
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
4.2 Output Signals
The detector controls the following outputs:
• Alarm relay (this output is not available in the ATEX certified model
20/20MI-XX-X-C)
• Fault relay (this output is not available in the ATEX certified model 20/20MIXX-X-C)
• 4-20mA current output
• RS-485 communication
The detector can be in one of the following states.
The detector is functioning normally.
The detector performs a Built In Test.
Fire detected – warming alarm (pre-alarm) state
Fire detected – fire alarm state
The alarm outputs are latched due to the detection of a fire
that has already been extinguished.
A fault is detected during BIT sequence. The detector will
continue to detect fire if the alarm conditions occur.
A fault is detected when the power supply is too low or
during a software fault.
Normal:
BIT:
Warning:
Alarm:
Latched Alarm
(Optional)
BIT Fault:
Fault:
In each state, the detector will activate different outputs as specified in table 8.
Detector
State
Normal
Warning
Alarm (1)
Latch(2)
BIT Fault(3)
Warning at
BIT Fault
Alarm at
BIT Fault
Fault
Table 8: Output Signals versus Detector State
Color LED
Flashing
Alarm
Fault Relay
LED
Relay
Green
1 Hz
Off
On
Red
2 Hz
Off
On
Red
Steady
On
On
Red
Steady
On
On
Yellow
4 Hz
Off
Off
Red
2 Hz
Off
Off
4-20mA
Output
5 mA
10 mA
15 mA
15 mA
2 mA
10 mA
Red
Steady
On
Off
15 mA
Yellow
4 Hz
Off
Off
0 mA
Notes:
1 The alarm outputs will be activated as long as the alarm conditions are present
2 The Alarm state can be latched (optional) according to programmable function
3 The detector will be in its BIT FAULT state until it has passed a successful BIT
and will stop approximately 3 seconds after the fire is no longer detected.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
4.2.1 Optional latching
The detector has an optional latched alarm output capability, which operates
according to the programmable function. If selected, upon the detection of a fire,
the detection signal is latched until manually reset (disconnecting the power supply
or performing a manual BIT). Latching affects the ALARM RELAY, 4-20mA output,
the ALARM LED.
4.2.2 Built-In-Test
When the programmable function “Alarm BIT” at YES successful, Manual BIT will
activate the alarm relay for 3 sec. and the 4-20mA output will provide 15mA for 3
sec.
4.3 Detector Mode Setup
4.3.1 Detector setting
See Section 4.3.3 for default factory settings
The 20/20 MI incorporates several functions that can be set by the customer
using:
Spectrex Host software, which will be supplied for each detector shipment,
refer to manual TM 784050 for programming instructions. The Host software
enables you to change functions as described in 4.3.2.
4.3.2. Detector’s various functions
a. Sensitivity Ranges
The detector offers four (4) sensitivity settings. The settings refer to the
gasoline fire of 1ft2 from
low sensitivity of 33 ft (10 m) to 132 ft (40m) for 20/20MI-1
8.2 ft (2.5m) to 33 ft (10m) for 20/20MI-3
For other types of fuel sensitivity, refer to Table 3.
Table 9: Sensitivity range
Sensitivity
10
20
30
40
20/20MI-1 Detection
Range
Ft
m
30
10
66
20
100
30
132
40
Sensitivity
2.5
5
7.5
10
16
20/20MI-3 Detection
Range ft(m)
ft
m
8.2
2.5
16.5
5
24.7
7.5
33
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
b. Alarm Delay
The detector is equipped with an Alarm Delay option, which provides
programmable time delays of 0 to 30 seconds with eight (8) fixed settings:
0, anti-flare, 3, 5, 10, 15, 20, and 30 seconds.
When an Alarm (Detection) level condition is encountered, the detector
delays the execution of the Alarm output’s relay by the specified period of
time. The detector will then evaluate the condition for 3 seconds. If the
Alarm level is still present, the Alarm outputs will be activated. If this
condition no longer exists, the detector will return to its standby state. The
Alarm delay option will affect the alarm relay and the 4-20mA output. The
LED will indicate warning level during the delay time only if the fire condition
exists.
Anti Flare
Anti Flare mode is selected to prevent false alarm in locations where fast
flares may be present. The Time delay for fire alarm in this mode is from 2.5
to 15 seconds (mostly less than 10 seconds).
Table 10: Time Delay
Delay (seconds)
0
*A – anti-flare
3
5
10
15
20
30
* Default
Note: The FM approval does not allow use of 20, and 30 second setting delay
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
c. Function Setup
The user can select the desired mode of operation by means of host.
Table 11: Function Setup
1
Name
Alarm Latch
Yes
Alarm latching enable
2
Automatic BIT
3
Alarm BIT
Automatic & manual BIT
(default)
Successful Manual BIT
activates the Alarm Relay for
approximately 3 seconds; the
4-20mA will provide 15mA for
3 sec
No
Alarm latching disable
(default)
Manual BIT only
Successful manual BIT
does not activate the
Alarm Relay (default)
d. Addresses Setup
Refer to TM 784050 for instructions for defining the addresses of the
detectors. The detector provides up to 247 addresses (from 1 to 247) that
can be used with RS-485 communication link.
4.3.3. Detector Default Set Up
The detector has five (5) functions that can be programmed according to customer
requirement at factory or at customer facility using software Host. The standard set
up (default) that the detector is programmed to if there are no specific
requirements are as follows:
Table 12: Default function set up
Detector default set up:
Sensitivity
Delay
Alarm Latch
Automatic BIT
Alarm BIT
20/20MI-1
20
A
NO
YES
NO
20/20MI-3
5
A
NO
YES
NO
4.4 Built In Test
4.4.1. General
The detectors’ Built In Test (BIT) checks the following:
• Electronics circuitry
• Sensors
• Window cleanliness
The detector can be set to perform the BIT automatically and manually or
manually only.
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4.4.2. Principles
If the result of a BIT is the same as the current status of the detector (NORMAL or
BIT FAULT), the detector's status is unchanged. If the result of a BIT differs from
the current status of the detector, the detectors’ status is changed (from NORMAL
to BIT FAULT or from BIT FAULT to NORMAL).
Note:
In BIT FAULT status, the detector can continue to detect a fire.
4.4.3. Automatic & Manual BIT
Manual Bit
Functions as described in section 4.4.4. In the case of an unsuccessful BIT all
outputs will function as described in section 4.4.4.but the BIT will be automatically
executed every 1 minute. This mode of operation will continue until successful BIT
has been encountered. As a result, the detector will resume its normal operation.
Automatic BIT
The detector automatically performs a BIT every 15 minutes.
A successful BIT does not activate any indicator.
• The FAULT relay remains CLOSED (NORMAL).
• The LED continues to flash (1 Hz) at green.
• The 4-20mA output continues to indicate 5 mA.
An unsuccessful BIT sequence activates the following:
• The FAULT relay is opened.
• 4-20mA output indicates BIT FAULT (2 mA).
• The LED flashes (4 Hz) at yellow.
• BIT procedure will be performed every 1 minute.
4.4.4. Manual BIT only
The BIT is initiated manually by momentarily connecting PIN No. 3 (or yellow wire)
with PIN No. 2 (or black wire). A successful manual BIT activates the following:
• FAULT relay remains CLOSED.
• ALARM relay is activated for 3 sec (only when Function Alarm BIT at YES)
• 4-20 mA OUTPUT current will be 15mA (only when Function Alarm BIT at
YES).
• The LED will illuminate at red for 3 sec.
Unsuccessful BIT activates the following:
• FAULT relay is opened.
• 4-20 mA output indicates BIT FAULT condition (2mA).
• The LED flashes (4 Hz) at yellow.
Note:
During a MANUAL BIT, if Function Alarm BIT is in YES position, the
ALARM relay will be activated and the 4-20mA outputs will initiate 15mA.
Therefore, automatic extinguishing systems or any external devices that
should be activated under actual alarm conditions should be disconnected
during BIT.
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5.Technical Specifications
5.1 Electrical Specifications
A. Operating Voltage: 18-32 VDC
B. Power Consumption:
Max. 25mA in Stand-by
Max. 50mA in Alarm
C. Electric input protection: The input circuit is protected against voltagereversed polarity, voltage transients, surges and spikes according to
MIL-STD-1275A.
D. Electrical outputs
• Dry Contact Relays:
Table 13: Contact Ratings
Relay
Type Normal
Maximum Ratings
Name
position
Alarm
SPST N.O.
2A at 30VDC or 0.5A at 250 VAC
Fault *
SPST N.C.
2A at 30VDC or 0.5A at 250 VAC
•
•
•
The FAULT relay will normally be energized and the contact will be closed during
normal operation of the detector. The contact will be open at Fault condition or low
voltage.
The relay outputs are not available in the intrinsically safe model 20/20MI-XX-X-C.
4-20mA Current Output:
The 4-20mA is isolated sink option.
The maximum permitted load resistor is 600Ohm.
STATE
FAULT
BIT FAULT
NORMAL
WARNING
ALARM
Output
0 + 0.5mA
2mA±10%
5mA±10%
10mA±5%
15mA±5%
• Communication Network:
The detector is equipped with an RS-485 communication link that can be
used in installations with computerized controllers. The communications
protocol is Modbus compatible.
This protocol is a standard and widely used.
It enables continuous communication between a single standard
Modbus controller (Master device) and a serial Network of up to 247
detectors.
It enables connection between different types of Spectrex detectors or
other Modbus devices to the same Network.
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5.2 Mechanical Specifications
A. Enclosure - St. St. 316L Electro chemical and passivation coating.
B. Hazardous Area approvals
ATEX (Cenelec)*
EX II 1GD T123 ºC
EEx ia IIC T4 (Ta = -40ºC to +85ºC)
EEx ia IIC T5 (Ta = -40ºC to +60ºC)
C. Functional Test
FM functional test Per 3620
for 20/20 MI-3 and 20/20MI-1
D. Water and dust tight
NEMA 250 type 6p.
IP 66 and IP 67 per EN 60529
E. Electronic Modules
Conformal coated.
F. Electrical connection (two options)
1. Connector Interface (mating connector supplied with detector)
2. Cable Interface
G. Dimensions
Base: 4.3 in (110mm) x 3.9 in (100 mm)
Height: 2.6 in (65.5mm)
H. Weight
St. St. 316L Housing
• 20/20MI-11 With Cable Output
• 20/20MI-12 With Plug Output
• 20/20MI-31 With Cable Output
• 20/20MI-32 With Plug Output
3.3lb (1.5kg)
4.2lb (1.9kg)
3.3lb (1.5kg)
4.2lb (1.9kg)
Tilt Mount
0.8 lb. (0.37 kg)
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5.3 Environmental Specifications
•
High Temperature
Design to meet MIL-STD-810C, method 501.1 procedure II
Operating temperature:
+160 °F (+70 °C)
Storage temperature:
+185 °F (+85 °C)
•
Low Temperature
Design to meet MIL-STD-810C, method 502.1, procedure I
Operating temperature:
-40 °F (-40 °C)
Storage temperature:
-65 °F (-55 °C)
•
Humidity
Design to meet MIL-STD-810C, method 507.1, procedure IV
Relative humidity of up to 95% for the operational temperature range.
•
Salt Fog
Design to meet MIL-STD-810C, method 509.1, procedure I
Exposure to a 5% Salt Solution Fog for 48 hours.
•
Dust
Design to meet MIL-STD-810C, method 510.1, procedure I
Exposure to a dust concentration of 0.3 frames/cubic ft. at a velocity of
1750 fpm, for 12 hours.
•
Vibration
Design to meet MIL-STD-810C, method 514.2, procedure VIII
Vibration at an acceleration of 1.1g within the frequency range of 5-30 Hz,
and an acceleration of 3g within the frequency range of 30-500 Hz.
•
Mechanical Shock
Design to meet MIL-STD-810C, method 516.2, procedure I
Mechanical Shock of 30g half-sin wave, for 11 msec.
•
Electromagnetic Compatibility (EMC):
This product is in conformance with EMC directive 89/336/EC.
Radiated Emission
EN61000-6-3
Conducted Emission
EN61000-6-3
Radiated Immunity
EN61000-4-3
Conducted Immunity
EN61000-4-6
ESD
EN61000-4-2
Burst
EN61000-4-4
Surge
EN61000-4-5
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6. Installation Instructions
6.1 Scope
The SharpEye Model 20/20MI is a self-contained Optical Flame Detector designed
to operate as a stand-alone unit directly connected to alarm systems or automatic
fire extinguishing systems. The detector can be a part of a more complex system
where many detectors and other devices are integrated through a common control
unit. This Section does not attempt to cover all of the standard practices and
codes of installation. Rather, it emphasizes specific points of consideration and
provides some general rules for qualified personnel. Wherever applicable, special
safety precautions are stressed.
6.2 General Considerations
Very Important
The detector should be aimed toward the center of the detection zone and
have a completely unobstructed view of the protected area. Whenever
possible, the detector face should be tilted down at a slight angle to prevent
the accumulation of dust and dirt. Do not start an installation unless all
conceivable considerations regarding detector location have been taken into
account.
To ensure optimal performance and an efficient installation, the following
guidelines should be considered:
A. Sensitivity
To determine the level of sensitivity, the following issues should be
considered:
• Size of fire at determined distance to be detected.
• Type of flammable materials.
B. Spacing and Location
The number of detectors and their locations in the protected area are
affected by:
• Size of the protected area
• Sensitivity of the detectors
• Obstructed lines of sight
• Cone of view of the detectors
C. Environment
• Dust, snow or rain can reduce the detectors sensitivity and require
more maintenance activities.
• The presence of high intensity flickering of IR sources may affect
sensitivity.
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6.3 Preparations for Installation
Installation should comply with NFPA 72E, as applicable to flame detectors. The
detectors can be installed with the use of general-purpose common tools and
equipment.
1
Verify the appropriate Purchase Order. Record the Part No. and the Serial No.
of the detectors and the installation date in the appropriate Log-book.
2
Open the container package prior to detector installation and visually inspect
the detector.
3
Verify that all components required for the detector installation are readily
available before commencing the installation. In case that the installation is
not completed in a single session, secure and seal detectors and conduits.
4
For wiring, use color-coded conductors or suitable wire markings or labels.
12 to 20 AWG (0.5 mm² to 3.5 mm²) wires may be used for site wiring. The
selection of wire gauge should be based on the number of detectors used on
the same line and the distance from the control unit, in compliance with
specifications.
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6.4 Certification Instructions
This section refers only for intrinsically safe installation on model 20/20MI-XX-X-C.
The following instructions apply to equipment covered by certificate numbers
Sira 04 ATEX 2010 and Sira 04 ATEX 2011X:
1
2
3
4
5
6
7
8
The equipment may be used in a hazardous area with flammable gasses and
vapors with apparatus groups IIC, IIB and IIA and with temperature classes
T1, T2, T3, T4 and T5.
The equipment is certified for use in ambient temperatures in the range of
-40ºC to +85ºC and should not be used out side the range.
Installation shall be carried out in accordance with the applicable code of
practice by suitably trained personnel.
The equipment is not intended to be repaired by the user. Repair of this
equipment shall be carried out by the manufacturer in accordance with the
applicable code of practice.
If the equipment is likely to come into contact with aggressive substance, then
it is the responsibility of the user to take suitable precautions that prevent it
from being adversely affected, thus ensuring that the type of protection is not
compromised.
Aggressive substances – e.g. acidic liquids or gases that may attack metals or
solvents that may affect polymeric materials.
Suitable Precautions – e.g. regular checks as part of routine inspections or
Establishing from the material’s data sheet that it is resistant to specific
chemicals.
As an option the enclosure may be constructed from wrought alloy with
specified magnesium content of less than 6%. In the event of rare incidents,
ignition source due to impact and friction sparks could occur. This shall be
considered when the equipment is being installed in locations that specifically
require Group II, category 1G equipment this is highlighted as a special
condition for safe use in the certificate Sira04 ATEX 2011X.
The manufacturer should note that, on being put into service, the equipment
must be accompanied by a translation of the instructions in the language of
the country in which the equipment is to be used and by the instructions in the
original language.
The instructions shall contain the certification marking as detailed on the
relevant Certification drawing, number 787831 and 787861.
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6.5 Conduit Installation
The detector can be mounted directly on the wall through 7-mm hole (item 7, Fig.
6) or preferably with the optional Tilt Mount, Model 787640 (item 1, Fig. 6).
The Tilt mount enables the detector to be rotated up to 60 degrees in all directions.
6.5.1 Tilt Kit P/N 787639
Item
Tilt Mount
Screw
Spring Washer
Qty
1
4
4
Table 14: Tilt Kit
Type/Model
787640
10-32 UNF x 7/16”
No. 10
Location
Detector - Holding plate
Detector - Holding plate
6.5.2 Tilt installation (Figs. No. 6 and 7)
1
Place the tilt mount (item 1) in its designated location and secure it with three
(3) fasteners through three (3) holes dia. 5.2mm (Fig. 7).Note: Skip this step if
the Tilt Mount is already installed. Also detector removal for maintenance
purpose does not require Tilt Mount removal.
2
Unpack the detector.
3
Place the detector, with its connector or cable pointing down, on the holding
plate of the tilt mount (item 2). Secure the detector by four (4) 10-32 UNF x
7/16” screws with No. 10 spring washers to the Tilt Mount. Use 5/32 Hex Key
for 10-32 screw (item 5).
4
Release the locking screw (item 4) in such a way that allows rotating the
detector. Point the detector towards the protected area and make certain that
the view of the area is unobstructed. Secure the detector in that position by
tightening the locking screws (item 4) on the tilt mount. (Make sure the detector
is in the right position.)
The detector is now correctly located, aligned and ready to be connected to the
system.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
1
2
3
4
Tilt Mount
Detector Holding Plate
Mounting Plate
Locking Screw
Manual – TM 787100, Rev. D April 2011
Description
5 Holding Screws
6 Washers
7 IR3 Detector Direct Mounting Holes
Figure 6: IR3 Detector and Tilt Mount Assembly
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
1
2
Manual – TM 787100, Rev. D April 2011
Description
Tilt Mount
3
Mounting Plate
Detector Holding Plate
4
Locking Screw
Figure 7: Tilt Mount Assembly - Outline Drawing
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6.6 Detector Mounting
When used in hazardous area, in order to comply with intrinsically safe
requirement, barriers must be incorporated and there will also be restrictions on
cable types and lengths. The detailed parameter will be dependent on the type of
barrier used.
A. Choose the wiring configuration according to Appendix A.
B. Connect the wire to the required PIN on the connector or choose the
required color on the cable, according to your wiring diagram.
C. Connect the grounding wire to general screw outside the detector, (Figs.2
and 3). The detector must be well grounded to earth ground for proper
operation.
6.7 Wiring Function
(See Fig. No. 8 and No.9.)
The following describes the function of each electrical wire of the detector:
Power Supply
PIN No. 1 or red wire - used for Input Power
PIN No. 2 or black wire - used for Return
Manual Bit Activation
PIN No. 11 or yellow wire - used for the Manual BIT activation.
The manual BIT is initiated by a momentary connection of the 11 (yellow wire) to
the power supply Return line.
Fault Relay
The Fault output is a N.C. SPST contact relay:
PIN No. 5 or brown wire
PIN No. 6 or light blue wire
The contact is normally energised closed when the detector is in its normal
operational condition.
This output is not available in the intrinsically safe model 20/20MI-XX-X-C.
Alarm Relay
The Alarm output is a N.O. SPST contact relay.
PIN No. 7 or orange wire
PIN No. 8 or violet wire
This output is not available in the intrinsically safe model 20/20MI-XX-X-C.
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4-20 mA Output
This output is used for analog, 4-20 mA current output as specified in
Paragraph 5.1D
PIN No. 11 or pink wire is used as output (+).
PIN No.12 or blue wire is used as input (-)
See Appendix A for more details.
RS-485
This output is used for communication network as specified in Appendix A.
PIN No. 10 or white wire is the positive (+) lead.
PIN No. 9 or gray wire is the negative (-) lead.
Ground
Pin No. 12 or green wire is used for Ground connection.
6.8 Operation Mode
The detector is supplied with a default function set up as follows:
Table 15: The detector default set up
Function
Sensitivity
Delay
Alarm Latch
Automatic BIT
Alarm BIT
20/20MI-1
20
A
NO
YES
NO
20/20MI-3
5
A
NO
YES
NO
The function set up can be reprogrammed by the user through RS-485 using a PC
with a Spectrex Host or through use of a handheld unit. Refer to TM 784050 for
instructions.
Programmable Function:
Modes of operation are programmable with a PC or Handheld unit according to the
selection table in Paragraph 4.3.2 and Refer to TM 784050.
Address:
The detector has the capability of acting as an addressable device.
The detector provides 247 (1-247) addresses, which can be used by the RS-485
communications link as described in paragraph 4.3.2 d - and Refer to TM 784050.
Alarm Delay:
An Alarm Delay may be required for certain applications. The detector has an
Alarm Delay that permits time delays from 0, anti-flare, 3, 5, 10, 15, 20 and 30
seconds respectively. The delay can be defined by the RS-485.
Refer to TM784050.
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7. Operating Instructions
7.1 Scope
The following instructions are designed to obtain optimal performance from the
detector over its life cycle.
7.2 Power-Up
1 Apply power and wait approximately 60 seconds for the automatic self-test of
the detector.
Note: Applying power initiates the following sequence: the LED flash (4 Hz) in
yellow. BIT is executed, if successful then: LED flash (1 Hz) in green, FAULT
relay contacts close
2 Wiring Inspection: If a short-circuit or line discontinuity exists, indications will
appear on the control unit display panel. Review your wiring.
3 The detector goes into its FAULT state when supply voltage drops under
16.5V. The detector status goes back to NORMAL, when the supply voltage is
above 17.5V.
4 Detector Inspection: Visually inspect the viewing window of the detector. It
should be clean and clear.
• LED should flash (1 Hz) in green
• ALARM relays should be N.O
• FAULT relay should be N.C
• The 4-20mA Output should be 5mA.
5 If any of the outputs or indications are different from the description in step 4,
see paragraph 8.6 for troubleshooting.
The Flame Detector is now ready for Functional Testing.
7.3 Reset (only when optional ‘latching’ alarm has been selected)
To RESET a detector when in its ALARM state, disconnect power, or initiate a
manual BIT.
7.4 Functional testing
Following is a testing procedure for proper functioning of the detector. The
detector can be tested using the Manual Built-in-Test or the Spectrex IR3 Fire
Simulator - 20/20-310
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7.4.1 Manual BIT Test
Momentarily connecting PIN number 11 or yellow wire with PIN 2 or black wire
performs manual BIT.
Important Note!
If the function setup “Alarm BIT” is in YES, then the Alarm and 4-20mA Output will
be activated during a manual BIT, therefore, automatic extinguishing systems or
any external devices that may be activated during BIT must be disconnected.
1
Verify that the detector is operated properly.
2
Initiate manual BIT. After a few seconds the following occurs:
• Alarm Relay will be activated and the 4-20mA output turns to 15mA for 3
seconds (only if “Alarm BIT” at YES).
• The LED should light constant red for 3 seconds.
• Fault Relay should stay N.O during the test.
7.4.2 Testing with Fire Simulator Model 20/20-310 (see Appendix B)
This test simulates an exposure of the detector to a real fire condition. The
detector is exposed to radiation at the required detection level. As a result the
detector must generate a Fire Alarm signal.
Important Note!
If the detector is exposed to a fire simulator, the Alarm Relay and 4-20mA will be
activated during the simulation. Therefore, automatic extinguishing systems or
any external devices, which may be activated during this process, must be
disconnected.
1
Apply power to the system and wait up to 60 seconds for turning of the
detector to normal state. The LED flash (1 Hz) at green. If the detector is on,
skip this step.
2
Aim the Spectrex Fire Simulator Model 20/20-310 at the target point of the
detector (see Fig. 15), in a way that the radiation emitted by it is facing
directly towards the detector. (See appendix B)
3
Press the operation button once. After few seconds,
• The LED should light constant at red for a few seconds.
• The 4-20mA output should turn to 15mA for a few seconds and then
return to 5mA.
• The Alarm Relay should also turn on to this period.
This completes the installation procedure. The detector and system are now ready
for operation.
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7.5 Safety Precautions
After Powering-up, the detector requires hardly any attention in order to function
properly, but the following should be noted:
1
Follow the instructions in the manual and refer to the drawings and
specifications issued by the manufacturer.
2
Do not expose the detector to radiation of any kind unless required for testing
purposes.
3
Do not open the detector housing, while power is supplied.
4
Do not touch internal parts other than the three functional switches.
Interference with internal circuits may impair detector performance and will
invalidate manufacturer's Warranty.
5
Disconnect external devices, such as automatic extinguishing systems before
carrying out any maintenance.
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8. Maintenance Instructions
8.1 Scope
This Section deals with preventive maintenance, describes possible faults in
detector operation and indicates corrective measures. Ignoring these instructions
may cause problems with the detector and may invalidate the warranty. Whenever
a unit requires service, please contact the manufacturer or its authorized
distributor for assistance.
8.2 Maintenance Instrumentation and Personnel
The detectors’ maintenance requires ordinary tools and suitably qualified
personnel, who should be familiar with local codes and practices.
8.3 Preventive Maintenance Procedures
The detector must be kept as clean as possible. The viewing window and the
reflector Flame Detector must be cleaned on a periodic basis. The frequency of
cleaning operations depends upon the environmental conditions and specific
applications. The fire detection system designer will give his recommendations.
1
Disconnect power to the detector before proceeding with any maintenance
including lens cleaning.
2
To clean the detector viewing window and reflector use water and detergent,
rinse with clean water.
3
Where dust, dirt or moisture accumulates on the window, first clean with a soft
optical cloth and detergent, then rinse with clean water.
8.4 Periodic Maintenance Procedures
In addition to preventive cleaning and maintenance, the detector should be
functionally tested every six months. This test should also be carried out for any
reason the detector has been opened.
8.4.1 Power-Up Procedure
Perform Power-Up procedure every time power is restored to the system. Follow
the instructions in paragraph 7.2.
8.4.2 Functional Test Procedure
Perform a functional test of the detector as described in paragraph 7.4.
8.5 Maintenance Records
It is recommended to record maintenance operations performed on a detector in a
system Log-book. The record should include information, which identifies the unit,
the installation date, contractor, and entries for every maintenance operation
performed including the description of the operation, date and personnel ID. If a
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unit is sent to the manufacturer or distributor for service, a copy of the
Maintenance records should accompany it.
8.6 Troubleshooting
8.6.1 Fault Indication
1 Check power supply for correct voltage, polarity and wiring.
2 Check detector window and reflector for cleanness. If necessary clean the
window as indicated in paragraph 8.3 and repeat the test.
3 Disconnect the power supply to the system and check the detector's internal
wiring.
4 Reconnect power supply and wait approximately 60 seconds. Repeat the test.
If the indication LED is still flashing (4 Hz) in yellow, the unit requires service.
8.6.2 False Alarm or Warning Indication
1
Disconnect the power supply from the system and check internal wiring.
2
Reconnect power supply and wait approximately 60 seconds. If indication
remains, the unit requires service.
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Appendix A: Typical Wiring Configurations
Important Note
See Appendix B for Wiring for Intrinsically Safe installation
Figure 8: Connector Interface Option
Note
In the intrinsically safe model 20/20MI-XX-X-C PINs 5,6,7,8 are not connected
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Figure 9: Cable Interface Option
Note
In the intrinsically safe model 20/20MI-XX-X-C wires brown, light blue, orange,
violet are not connected
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RS-485 Communication Network
Using the RS-485 network capability of the IR3 detector and control software, it is
possible to connect up to 32 detectors in an addressable system with 4 wires only
(2 for power and 2 for communication). Using repeaters, the number of detectors
can be much larger (32 detectors for each repeater) up to 247 on the same 4
wires. When using the RS-485 network, it is possible to read each detector status
(FAULT, WARNING, ALARM) and to initiate a BIT to each detector individually.
For more details, consult the factory.
Figure 10: RS-485 Networking
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Figure 11: 4-20mA Wiring (Sink Option)
Figure 12: 4-20mA Wiring (Source Option)
Notes: The detectors are factory set to isolated 4-20mA-sink version. To work at
non-isolated 4-20mA source version, connect PIN 3 or blue wire to PIN 1
or red wire. This can be done on the mating connector or in the junction
box in the cable option. The 4-20mA will be measured between PIN 4 or
pink wire and PIN 2 or black wire.
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Figure 13: Typical Wiring For 4 Wire Controllers
Notes:
1
2
3
In the intrinsically safe model 20/20MI-XX-X-C this wiring configuration is not
relevant
For EOL resistor value see Controller Manual
The color wire refers to the color of the cable output option. The PIN No.
Refer to the connector option.
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Appendix B: Intrinsically Safe Connection For
20/20MI-XX-X-C
The 20/20MI-XX-X-C is intrinsically safe certified per ATEX Ex II 1GD, EEx ia IIC
T4. This model does not include the relay outputs.
In order to comply with the intrinsic safety requirements, barriers/ galvanic
isolators must be incorporated. This section will recommend types of barriers and
connection. To comply with Intrinsic safety requirements, any barriers/isolators
that will comply with parameters of the detector certification or lower and allow
proper operation of the detector will be acceptable.
The attached list is for example only.
a.
b.
c.
For power line
- MTL 5021, MTL5022, P&F KFD2-SL2-EX 1.B
For 4-20mA output - MTL 7787, P&F KFD2-CR-Ex 1.30-300
For RS-485 line
- MTL 7766AC
The Flame Detector limitation parameters, per input/output, are as follows:
Pin Ref
1
2
3
4
5
6
7
8
9
10
11
12
Vin
GND
4-20 mA IN
4-20 mA OUT
RS485A+
RS485BFault relay
Fault relay rtn
Alarm relay
Alarm relay rtn
Shield
EXT_BIT_SW
Ui
Ii
Pi
Ci
Li
30V
200mA
1W
0
0
30V
200mA
0.5W
0
0
±12V
80mA
1W
0
0
30V
X
X
0
0
30V
X
X
0
0
0
0
0
0
0
0
0
0
0
0
43
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Figure 14: 4-20 mA (sink) connection for Intrinsically Safe installation
44
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Figure 15: RS-485 connection for Intrinsically Safe installation
45
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Appendix C: Long Range IR3 Fire Simulator
Figure 16: Fire Simulator
Product Description
The SharpEye IR3 Long Range Fire simulator 20/20-310 is designed specifically
for use with SharpEye IR3 flame detectors. The Fire Simulator emits IR radiation
in a unique sequential pattern corresponding to and recognizable by the IR3
detector as fire. This allows the IR3 detectors to be tested under simulated fire
conditions without the associated risks of an open flame.
There is a specially designed beam collimator model number 20/20-190 used for
extended operating range.
Unpacking
In addition to the delivery form, there should be the following contents:
•
•
•
•
Fire Simulator with built in batteries
Battery charger
Optional Beam Collimator
Storage Case
Operating Instructions
WARNING:
Do not open the Fire Simulator to charge the batteries or for any other reason in a
hazardous area.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
CAUTION:
The following test will simulate a real fire condition and may activate the
extinguishing system or other alarms. If this is not desired, disconnect/inhibit them
before the test and reconnect after the simulation.
Figure 17: Mini IR3 Detector Target Point
Follow these instructions to simulate a fire:
1. Aim the Fire Simulator towards the detector’s “Target Point”.
2. For testing keep a distance of at least 50cm (20 inches) from the detector.
3. Press the operation button once. Fire simulation will last for 20 seconds.
The detector will send an alarm signal (solid red LED).
4. For another fire simulation a 20 second time lapse is required between
tests.
5. Make sure the optical window is clean and keep the Fire Simulator in a safe
place when not in use.
Battery Charging
The Fire Simulator uses NiCad batteries as a rechargeable power source. When
the batteries are fully charged it will operate for at least 60 uses without
recharging. An internal buzzer is sounded when the voltage from the batteries is
lower than the required operational level.
1. Place the Fire Simulator on a table in a safe area.
2. Turn the sealed plug (next to the operation button) counter-clockwise with a
suitable wrench.
3. Connect the battery charger.
4. Charge for a maximum of 14 hours.
5. Disconnect the charger.
6. Tighten the sealed plug clockwise.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Specifications
Mechanical
Explosion Proof Enclosure:
NFPA (designed to meet)
Class I, Division 1 & 2 Groups B, C and D
Class II, Division 1 & 2 Groups E, F, and G
ATEX EX II 2G NEMKO 02ATEX255
EExd IIB T5 50˚C, per En 50-014 & EN50-018
Electrical
Power: 8 VDC Max.
6 x Rechargeable 1.2 VDC NiCad Batteries
Current: 2.5A Avg.
Charge: 400mA for 14 Hours
Environmental
Temperature Range:
Vibration Protection:
Water and Dust:
-4º F (-20º C) to 122º F (50º C)
1g (10-50hz)
IP 67 per EN 60529
Physical
Dimension:
Weight:
11.5 x 10.1 x 3.9 in (292 x 258 x 100 mm)
7.5 lb. (3.4 Kg)
Range*
Sensitivity
33 ft (10m)
65 ft (20m)
100 ft (30m)
132 ft (40m)
8.2 ft (2.5m)
16.4 ft (5m)
24.7 ft (7.5m)
33 ft (10m)
Range
20/20MI-1
2.3 ft (0.7 m)
4 ft (1.2 m)
6.6 ft (2 m)
10 ft (3 m)
20/20MI-3
------1 ft (0.3 m)
1.6 ft (0.5 m)
2.3 ft (0.7 m)
Extended Range
8.2 ft (2.5 m)
13.2 ft (4 m)
20 ft (6 m)
-
* At extreme temperatures - 15% Max. Reduction in range
48
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Appendix D: FM Report for 20/20 MI-3
Examination and Test
Four samples of the model – 20/20 MI-3 flame detector, representative of
production units, were examined and tested at FM Approvals in Norwood,
Massachusetts.
One sample was examined, tested and compared to the manufacturer’s drawings.
All documentation applicable to this program is on file at FM Approvals.
Stability Test
One Model 20/20 MI-3 flame detector was energized and tested to verify proper
operation under normal, standby conditions. Continues operation of this sample
was monitored for 30 days in clean-air (working office type): there was no
evidence of instability or false signal during that period.
Baseline Sensitivity Test
All four samples of the 20/20MI-3 – flame detector were subjected to a small-scale
sensitivity test consisting of a 1.75 in. (4.5 cm.) diameter fire of n-Heptane at a
distance of 3 ft. (1m) from the detector. The average results for all four samples
were as follows:
Model 20/20 MI–3 at 3 ft. (1m): 1.5 seconds.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Flame Response Sensitivity Test
All four samples of the Model 20/20MI-3 were exposed to the standard test
consisting of a 12 in. x 12 in. (0.3m x 0.3m) pan fire with fuels noted below. The
tests were conducted at FM Approvals in Norwood, MA, and the average results
for all four samples are as follows:
Detector
Model
Fuel
Distance to
Fire
Ft.
m
Sensitivity
setting
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
20/20 MI-3
Response
(seconds average
n-heptance
n-heptance
n-heptance
n-heptance
Diesel
Diesel
Diesel
Diesel
Ethyl Alcohol
Ethyl Alcohol
Ethyl Alcohol
33
24.7
16.5
8.2
23.1
17.3
11.5
5.7
24.8
18.5
12.4
10
7.5
5
2.5
7
5.3
3.5
1.7
7.5
5.6
3.8
10
7.5
5
2.5
10
7.5
5
2.5
10
7.5
5
3.0
4.2
4.1
8.2
3.8
5.5
6.4
9.2
4.6
3.2
4.8
Ethyl Alcohol
Jet A
Jet A
Jet A
8 in.(20cm) dia. Pan
polypropylene pellets.
6.1
23.1
17.3
11.5
8
1.8
7
5.3
3.5
2.4
2.5
10
7.5
5
10
3.6
1.9
4.3
6.1
1.9
Field of View Test
One sample of the Model 20/20 MI-1, which has an identical enclosure to the
20/20 MI-3 and is considered representative of the series, was exposed to the 12
in. x 12 in. (0.3 m. x 0.3 m.) N-heptane pan fire during which time the viewing
angle was varied +/-50º from the centerline along the horizontal and vertical axes.
The following results were obtained:
Angle (Approximate)
On centerline
+ 50º horizontal
- 50º horizontal
+ 50º vertical
- 50º vertical
Distance
33 ft. (10m.)
16.5 ft. ( 3 m.)
16.5 ft. ( 3 m.)
16.5 ft. ( 3 m.)
16.5 ft. ( 3 m.)
50
Average Response Time
3 sec.
8.7 sec.
8.1 sec.
8.8 sec.
12 sec.
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
False Stimuli Response Test
All four samples of the Model 20/20 MI-1with sensitivity setting 10, considered
representative of the series, were tested in the presence of modulated and nonmodulated artificial sources of light and other heated bodies, then, in the presence
of each of the false stimuli, were exposed to the standard test consisting of a 12 in.
x 12 in. (0.3m. x 0.3m.) N-heptane pan fire. The false stimuli sources were as
follows:
1.
2.
3.
4.
5.
Resistive Electric Heater (1350w) at 3 ft. (1m.)
Fluorescent light (40 w) at 3 ft. (1m.)
Halogen light (500 w with lens) at 3 ft. (1m.)
Incandescent Light (100 w) at 3 ft. (1m.)
Arc welding with setting at 200 Amperes at 10 ft. (3 m.) using 7011 rod and
steel plate.
The detectors produced no trouble or false alarm signal in the presence of these
false stimuli at the distance specified, and they continued to respond satisfactorily
to the test fire in the presence of these sources.
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Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
52
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Appendix E: Ordering Information
Please define the requested model according to 1.1.5 by filling in the appropriate
squares below.
The detector default set up:
Sensitivity
Delay
Alarm Latch
Automatic BIT
Alarm BIT
20/20MI-1
20
A
NO
YES
NO
53
20/20MI-3
5
A
NO
YES
NO
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
If you need a special set up, please refer to Section 3.2 to complete the following
table:
Orders may be sent to:
Spectrex Inc.
218 Little Falls Road
Cedar Grove, NJ 07009, USA
Fax: +1 (973) 239-7614
E-mail: Spectrex@spectrex.net
Name
Company
Position
Billing Address
Address
City
State
Zip
Country
Zip
Country
Shipping Address
Address
City
State
Phone
Country Code
Area Code
Number
Country Code
Area Code
Number
Fax
E-mail
For additional information about ordering 20/20MI, please call Spectrex Inc.
at: +1 (973) 239-8398.
54
Spectrex Inc. - SharpEyeTM Mini IR3 Flame Detector
Manual – TM 787100, Rev. D April 2011
Technical Support
For all technical assistance or support, contact:
218 Little Falls Road
Cedar Grove, NJ 07009, USA
Tel: +1 (973) 239 8398
Fax: +1 (973) 239 7614
Email: Spectrex@spectrex.net
Web-site: www.spectrex-inc.com
Your Local Authorized Distributor:
SPECTREX INC.
New Jersey (USA)
Key Person: President: Mr. Eric Zinn
218 Little Falls Road.
Cedar Grove, NJ 07009
USA
+1 (973) 239 8398
+1 (800) 452 2107
Toll free within the US only
+1 (973) 239 7614
Spectrex@spectrex.net
Texas (USA)
Key Person: Regional Sales Manager: Mr. Jay Cooley
16203 Park Row, Suite 150
Houston, Texas 77084
USA
+1 (832) 321 5229
jspectrex@aol.com
Europe
Key Person: Regional Manager: Mr. Ian Buchanan
6 Applecross Road
Glasgow G66 3TJ
United Kingdom
+44 (0) 141 578 0693
+44 (0) 141 578 9689
ian@spectrex-inc.com
55