Triple IR (IR3) Flame Detector Model 20/20I User's and Maintenance Manual TM 20/20I, Rev. (6) August 2004 Factory Mutual Approved Class I Div. 1 Groups B, C, D Class II Div. 1 Groups E, F, G ATEX Approved C.S.A. Approved S.A.A Approved Ex II 2G EExd IIB + H2 T5 EExde IIB + H2 T5 Class I Groups B, C, D Class II Groups E, F, G Class 1 Zone 1 Exd IIB T5 218 Little Falls Rd., Cedar Grove, NJ 07009 USA; Phone: +1 (973) 239 8398 Fax: +1 (973) 239 7614 Web-Site: www.spectrex.net; Email: spectrex@spectrex.
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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 TABLE OF CONTENTS 1. Scope .................................................................................................... 1 1.1 PRODUCT OVERVIEW .....................................................................................1 1.2 DOCUMENT OVERVIEW ...................................................................................1 2. Technical Description ...................................................
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 7.4.1 Manual BIT Test .................................................................................35 7.4.2 Testing with fire simulator ...................................................................35 7.5 SAFETY PRECAUTIONS .................................................................................36 8. Maintenance Instructions .................................................................. 37 8.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 LIST OF FIGURES Figure 1: IR3 Flame Detector ............................................................................................ 3 Figure 2: Flame Detector Assembly - Outline Drawing .................................................... 4 Figure 3: Horizontal and Vertical Fields of View .............................................................. 7 Figure 4: Indication LEDs.....................................
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 1. Scope 1.1 Product Overview The Spectrex Model 20/20I is a 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 2. Technical Description • • • • • • • • • • • Detection Range: up to 200 ft (60m) for a 1ft x 1ft (0.3m x 0.3m) 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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 1ft x 1ft (0.3m x 0.3m) 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Other fuels The detector will react to other types of fires as follows: Pan Fire Size: 1ft x 1ft (0.3m x 0.3m) Maximum Wind Speed: 6.5 ft/sec (2 m/sec) Maximum Response Time: 10 sec Table 2: Response Sensitivity Ranges Type Of Fuel % Of Max. Distance at Each Sensitivity Range Gasoline 100% N-Heptane 100% Alcohol 95% 75% JP4 75% Kerosene 75% Diesel Fuel 70% Methane* 30% Propane* 30% * 0.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 3.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 4. Operation 4.1 Visual Indications Two LED-indications are located in the detector front window: i. Power LED (Yellow) Normal - LED ON BIT failure - LED blinks (4 Hz) ii.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 4.2 Output Signals The detector controls the following outputs: • Alarm relay • Accessory relay • Fault relay • 4-20mA current output • RS-485 communication The detector can be in one of the following states. Normal: BIT: Warning: Alarm: Latched Alarm (Optional) Fault: The detector is functioning normally. The detector performs a Built-In-Test. Fire detected - changed to warning – pre-alarm state.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 4.2.1 Optional latching The detector includes a latched alarm output capability, which operates according to the DIPswitch SW1-1 position. Upon the detection of a fire, the detection signal is latched until manually reset (disconnecting the power supply or performing a manual BIT). 4.2.2 Built-In-Test (BIT) Successful Manual BIT will activate the following outputs according to SW1 switches.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 4.3.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 4.3.2 Address switch (SW2) (Optional): The address switch provides 64 alternative addresses that can be used with the RS-485 communication link. See tables 8 and 9. Table 8: Address Switches SW2 SWITCH Description 1 Address bit 0 (LSB) 2 Address bit 1 3 Address bit 2 4 Address bit 3 5 Address bit 4 6 Address bit 5 (MSB) Legend: 0 = OFF 1 = ON LSB = Least Significant Bit MSB = Most Significant Bit.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 4.3.3 Alarm Delay switch (SW3): The detector is equipped with an Alarm Delay option, which provides programmable time delays of 0 to 30 seconds with eight (8) fixed settings at: 0, anti-flare, 3, 5, 10, 15, 20, and 30 seconds, using SW3 switches 1-3. See table 10. When an Alarm (Detection) level condition is encountered, the detector delays the execution of the Alarm output relay by the specified period of time.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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). Figure 5: Switch Locations 4.4 Built In Test A.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 B. Principles If the result of a BIT is the same as the detector’s current status (NORMAL or FAULT), the detector's status will not change. If the result of a BIT differs from the detector’s current status, then a second BIT is executed after a delay of 0.5 seconds. If the result of the second BIT is the same as the previous BIT (and still differs from the current status), the detectors’ status will be changed.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 D. Automatic & Manual BIT (SW1-3 = ON) Manual Bit Functions as described in Para. 4.4.c. In the case of an unsuccessful BIT all outputs will function as described in para. 4.4.c, but the BIT will be automatically executed every 1-minute. This mode of operation will continue until two consecutive successful BIT's that have been encountered. As a result, the detector will resume its normal operation.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 5.Technical Specifications 5.1 Electrical Specifications A. Operating Voltage: 18-32 VDC B. Power Consumption: Max. 150mA in Stand-by Max. 200mA in Alarm C. Electric input protection: The input circuit is protected against voltagereversed polarity, voltage transients, surges and spikes according to MILSTD-1275A.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 D.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 E. Electrical outputs • Dry Contact Relays: Table 11: Contact Ratings Relay Type Normal Maximum Ratings Name position Alarm SPDT N.O. N.C. 2A at 30VDC or 0.5A at 250 VAC Accessory SPST N.O. 5A at 30VDC or 250 VAC Fault SPST N.C.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 5.2 Mechanical Specifications A. Enclosure Aluminum: Chromate coating and Epoxy enamel finish or Stainless Steel 316: Electrochemical passivation coating B. Explosion proof FM approval Class I Div. 1 Groups B, C and D; Class II Div. 1 Groups E, F and G. ATEX Ex II 2G SIRA 00ATEX 1163, 1164 Temp. -40°F (-40 °C) to 160°F (70 °C) EExd IIB + H2 T5 Option: -40°F (-40 °C) to 185°F (85 °C) Per EN 50014 & EN 50018 Temp.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 5.3 Environmental Specifications A. High Temperature Design to meet MIL-STD-810C, method 501.1 procedure II Operating temperature: +160 °F (+70 °C) +185 °F (+85 °C) Optional operating temperature: Storage temperature: +185 °F (+85 °C) B. 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) C.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 6. Installation Instructions 6.1 Scope The "Spectrex" Model 20/20I 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 form part of a more complex system where many detectors and other devices are integrated through a common control unit.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 6.5 Detector Mounting The detector may be mounted on a simple fabricated bracket, or preferably the optional Swivel Mount, Model 20/20-003. The Swivel Mount enables the detector to be rotated up to 40 degrees in all directions. 6.5.1 Swivel Mount Kit: Table 12: Mounting according to US Version Item Qty.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 6.6 Wiring (Refer to Fig. 12) 1 Disconnect power. 2 Remove the four (4) protective set-screws from detector front. (Fig. 8 Item 1) 3 Release the four (4) socket-head screws that secure the detector housing (Item 1) to its back cover (Item 5) Using HEX KEY No. 5. Hold the housing (Item 1) during the removal of the screws. With the screws removed, pull the detector housing (Item 1) from its cover (Item 5).
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 6.7 Terminal wiring (See Fig. No.10 and No.11.) The detector contains a Terminal Board consisting of two (2) terminal blocks (Item 4). The left terminal block is labeled 1 to 7, the right terminal block is labeled 8 to 14. The following describes the function of each electrical terminal of the detector: • Power Supply (Terminal Numbers 1, 2): Input power is supplied to Terminal No. 1.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 • 4-20mA Output (Terminal Numbers 11, 12): Terminal Numbers 11 and 12 are used for analog, 4-20mA current output as specified in paragraph 4.e Terminal No. 11 is used as output Terminal. Terminal No. 12 is used as input Terminal (see appendix B for more details) • RS-485 (Terminal Numbers 13, 14): Terminal Numbers 13 and 14 are used for communication network as specified in appendix C. Terminal No.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 6.8 Mode Selection When wiring is completed the operational mode can be selected. Mode selection is achieved by means of 3 DIPswitches listed below: SW1 - Function switch – Fig. 12 Item 7 (see table 6) SW2 - Address switch – Fig. 12 Item 8 (see table 9) SW3 - Alarm Delay switch – Fig.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 7.4.1 Manual BIT Test Important Note! If SW1 switches 4 and 5 are in their “ON” position the Alarm, Accessory Relays 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 8. Maintenance Instructions 8.1 Scope This chapter 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 8.5 Maintenance Records It is recommended to record maintenance operations performed on a detector in the 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Appendix A - Wire Selection Tables General Instructions For Electrical Wiring 1. Refer to Table 14 to determine the required wire gauge for general wiring, such as relay wiring. Calculate the permitted voltage fall with respect to loads current, wire gauge and length of wires. 2. Refer to Table 15 to select wire gauge for power supply wires. DO NOT connect any circuit or load to detectors’ supply inputs.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Figure 15: Typical wiring diagram for controllers with alarm & fault loops Notes: 1. For EOL Resistors Values See Controller Manual 2.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Figure 16: 4-20mA wiring Notes: The detectors are factory set to isolated 4-20mA sink version. To work at nonisolated 4-20mA version (source), connect Terminal 12 to Terminal 1. The 4-20mA meter are connected between Terminal 11 and Terminal 2.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Appendix C – RS-485 Communication Network Using the RS-485 network capability of the IR3 detector and additional software it is possible to connect up to 32 detectors in an addressable system with 4 wires only (2 for power & 2 for communication). Using repeaters, the number of detectors can be much larger (32 detectors for each repeater) on the same 4 wires.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Appendix D - Mounting the “EExde approved” version The EExde approved version provides an additional EExe terminal box attached below the EExd detector and therefore allows easier access in hazardous areas (see fig. 18). The unit is prewired to the terminals in the additional EExe terminal section ready for field wiring connections 1.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 2. WIRING (REFER TO FIG. 18.) 1 Disconnect power. 2 Release the four (4) slotted-head screws (item 3) that secure the chamber cover (Item 2). The chamber is now revealed. 3 Remove the protective plug mounted on the detector conduit inlet, pull the wires through the detector chamber (Item 7). Use a 3/4"-14NPT or M25x1.5 explosion-proof conduit connection to assemble the conduit to the detector.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Figure 18: Flame Detector Assembly - Wiring Diagram Description 1. Modified Back Cover 5. Ground Terminal 2. EExe Chamber Cover 6. Mounting Thread 3. Slotted Screw 7. EExe Chamber 4. Terminal Block 8.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 2.1 Terminal Wiring The detector contains an EExe chamber consisting of a terminal block (Item 4). The terminal block is labeled 1 to 6. (See Fig. No.18) The following describes the function of each electrical terminal of the detector: There are two options: RS-485 & 4-20mA Version Option A (See Fig. No. 19) Power Supply (Terminal Numbers 1, 2): Alarm & Fault Relays Version Option B (See Fig. No.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Appendix E - Long Range IR3 Fire Simulator Figure 21: Fire Simulator Product Description The SharpEye IR3 Long Range Fire simulator 20/20-310 is designed specifically for use with the IR3 flame detectors. The Fire Simulator emits IR radiation in a unique sequential pattern corresponding and recognizable by the IR3 detector as fire.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 Figure 22: 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 20 inches (50cm) 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.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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 II2G NEMKO 02ATEX255 EExd IIB T5 50˚C per En 50-014 & EN50-018 Electrical Power: 8 VDC Max. 6 x Rechargeable 1.2 VDC NiCd Batteries Current: 2.5A Avg.
Spectrex Inc. - SharpEyeTM IR3 Flame Detector Manual – TM 20/20I, Rev. (6) August 2004 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.net Your Local Office: SPECTREX INC. Texas (USA) Mr. Jay Cooley, Regional Sales Manager 16203 Park Row, Suite 150 Houston, Texas 77084 USA Phone: +1 (832) 321 5229 Email: jay@spectrex.net Europe Mr.
