UV Flame Detector Model 20/20U, 20/20UB User's and Maintenance Manual TM20/20UB Rev E, August 2004 Factory Mutual Approved ATEX Approved Class I Div. 1 Groups B, C, D Class II Div. 1 Groups E, F, G Ex II 2G EExd IIB + H2 T5 EExde IIB + H2 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. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 TABLE OF CONTENTS 1. Scope................................................................................................................1 1.1 Product Overview ........................................................................................1 1.2 Document Overview ....................................................................................1 2. Technical Description...........................................
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 7.5 Testing With Fire Simulator (See Appendix D) ..........................................32 7.6 Safety Precautions ....................................................................................33 8. Maintenance Instructions ................................................................................34 8.1 Scope .....................................................................................................
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 LIST OF FIGURES Figure 1. Flame Detector Assembly - Outline Drawing..................................................... 4 Figure 2. Flame Detector Assembly - Schematic Section................................................... 5 Figure 3. Horizontal and Vertical Fields of View .............................................................. 7 Figure 4.a. UV Detector and Swivel Mount Assembly ................................
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 1. Scope 1.1 Product Overview The Spectrex Model 20/20U, 20/20UB is a UV Flame Detector. It is designed to sense the occurrence of fire and flames and subsequently activate an alarm or an extinguishing system directly or through a control circuit for maximum fire protection. It uses innovative technology of advanced digital signal processing to analyze the dynamic characteristics of fire.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 2. Technical Description • • • • • • • • Detection Range: Up to 50 ft (15m) for a 1ft x 1ft (0.3m x 0.3m) Gasoline fire. Advanced Digital Processing Of The Dynamic Characteristics Of Fire.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 2.4 Alarm Signal Delay The detector is adapted with an Alarm Signal delay selector, providing a user to set a different delay between 0 to 30 seconds, mandatory for several specific applications. When Alarm level detection conditions are met, an internal time delay is initiated as preset on the selector. Once the preset time delay has elapsed, detection conditions are evaluated for 3 seconds.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 2.8 Detector Types This manual covers two types of detectors. Model 20/20UB and model 20/20U, the difference is that Model 20/20UB includes a BIT and 20/20U does not include this feature. The two Models are available in Aluminum (Al.) housing, or Stainless Steel (St.St.) housing. They also include an option for higher ambient temperature 185°F (+85°C) upon requirement. Figure 1.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Figure 2. Flame Detector Assembly - Schematic Section Note 1: Note 2: This figure describes the Detector, which includes Ground Terminal for ATEX installation. For FM installation device, external grounding screw mounting.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, 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: Standard fire is defined as a 1ft x 1ft (0.3m x 0.3m) Gasoline pan fire with max. Wind speed of 6.5ft/sec (2m/sec). Sensitivity Ranges: The detector has two response levels: 1. Warning (Pre-alarm) 2.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 3.2 Cone Of Vision Horizontal: 90° Vertical: 90° Figure 3 illustrates the relative range as a function of the incidence angle. Figure 3.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 3.3 False Alarms The detector does not provide an alarm or a warning signal as a reaction to the radiation sources specified at Table 2 below. Notes: IAD = Immune at any distance. All sources are chopped from 0 to 20 Hz. Table 2.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 4. Operation 4.1 Visual Indications Two indications LEDs are located in the detector’s front window. Yellow LED Red LED - Provides indication of Normal or Fault state. - Provides indication of Warning or Alarm state. Table 3. LED indications within different detector states Detector State Yellow LED Red LED Normal Blink at 0.5Hz Rate Off Fault or BIT Fault Blink at 2Hz Rate Off Warning Blink at 0.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 4.3 Mode Selection The detector has 2 DIPswitches, which enables the user to adapt the detector’s operation to specific applications: • Function switch (SW1) • Alarm Delay Switch (SW2) 4.3.1 Function switch (SW1) The user can select the desired mode of operation by means of this switch according to Table 4. SW 1 2 3 4 5 6 7 8 Table 4. Function Switch SW1 ON Position OFF Position Alarm Signal Latching enabled.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Optional Latching (default is non-latching): The detector includes a latched alarm output capability, which operates according to the DIP-switch SW1-1 position. Upon the detection of a fire, the detection signal is latched until manually reset (disconnecting the power supply or upon performing a manual BIT).
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 4.3.2 Alarm Delay Switch (SW2) – default 5 sec. The detector is equipped with different Alarm Delay options. It provides programmable time delays of 0 to 30 seconds with eight (8) fixed settings at: 0, 3, 5, 10, 15, 20, 25 and 30 seconds, using SW2 switches 1-3. (See Table 5.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 4.4 Detector States The detector can be in one of the following states: Normal: The detector is functioning. BIT: The detector performs a BIT. Warning: Fire detected - changes to its Warning pre-alarm state. Alarm: Fire detected - changes to Alarm state.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 4.5 Built-In-Test (refer to 2.5) a. Principles The detector’s Built In Test (BIT) checks the following: • Electric circuitry • Sensor • Window cleanliness The detector can be set to perform the BIT automatically and manually (SW1-2 = ON) or manually only (SW1-2 = OFF). b. Principles If the BIT succeeds, the detector’s status turns to Normal. If the BIT fails, a second BIT is executed after a delay of 6 seconds.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 d. Automatic & Manual BIT (only when SW1-2 = ON): Manual BIT: Functions as described in section 4.5.c. In the case of an unsuccessful BIT, all outputs will function as described in section. 4.5.c., however, automatic BIT will be automatically executed every 1 minute. This mode of operation continues until successful BIT have been encountered. As such result, the detector resumes its normal operation.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 5. Technical Specifications 5.1 Electrical Specifications a. Operating Voltage: 18-32 VDC b. Power Consumption: Max. 80mA in Stand-by Max. 120mA in Alarm c. Electric input protection: The input circuit is protected against voltage reversed polarity voltage transients, surges and spikes according to MIL-STD-1275A. d.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 e. Electrical Outputs: • Output Relays: Relay Name Alarm Accessory Fault • Table 7. Dry Contacts Relays Ratings Type Normal position Maximum Ratings SPDT SPST SPST N.O. N.C. N.O. N.C. 2A at 30VDC or 0.5A at 250 VAC 5A at 30VDC or 250VAC 5A at 30VDC or 250 VAC 4-20mA Current Output stepped Levels at different detector states (on terminals 11 and 12): Fault: Bit Fault: Normal: Warning: Alarm: 0mA 2mA 4mA 16mA 20mA +0.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, 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 ATEX Class I Div. 1 Groups B, C and D; Class II Div. 1 Groups E, F and G. Ex II 2G SIRA 00ATEX 1160, 1162 T5 Temp.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 5.3 Environmental Specifications a. High Temperature: Design to MIL-STD-810C, method 501.1 procedure II Operating temperature: +70 °C (+160 °F) Optional operating temperature: +85 °C (+185 °F) Storage temperature: +85 °C (+185 °F) b. Low Temperature: Design to MIL-STD-810C, method 502.1, procedure I Operating temperature: -40 °C (-40 °F) Storage temperature: -55 °C (-65 °F) c.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 6. Installation Instructions 6.1 Introduction This chapter 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. Special safety precautions are stressed wherever applicable. 6.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, 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 number and Serial number of the detectors and the installation date in the appropriate Logbook.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 6.5 Detector Mounting The detector may be mounted on a simple fabricated bracket, or preferably the optional Swivel Mount, Model No. 20/20-003. The Swivel Mount enables the detector to be rotated up to 40 degrees in all directions. 6.5.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Figure 4.a.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Description 1 Protective Set Screws 2 Ground Terminal (for ATEX) or Ground Thread (for FM) 3 Back Cover 4 Housing 5 Swivel Mount Screw Hole 6 Swivel Mount 7 Holding Plate 8 Locking Screws 9 Detector Mounting Screws 10 Swivel Mount Plate 11 Swivel mounting screws Figure 4.b.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 6.6 Wiring (Refer to Fig. 5) 1 2 Disconnect power. Remove the four protective set-screws (Fig 4a, item 1) from detector front. 3 Release the four socket-head screws that secure the detector housing (Item 6) to its back cover (Item 3) using No. 5 Hex Key for M6 screw. Hold the housing during the removal of the screws. With the screws removed, pull the detector housing from its cover.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 6.7 Terminal Wiring (Figures 6,7) The detector contains a terminal board consisting of two terminal blocks. The left terminal block is labeled 1 to 6; the right terminal block is labeled 7 to 12. See Figure 6. The following describes the function of each electrical terminal of the detectors. Power Supply: (Terminals 1, 2) Input power is supplied to terminal No. 1. The RETURN is connected to terminal No.2.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Legend: 1 Alarm Delay Switch (SW2) 2 Function Switch (SW1) 3 Housing 4 Earth (Ground) Terminal (for ATEX) or Earth Thread (for FM) 5 Grounding Wires 6 Back Cover 7 Terminal Board 8 Securing Cable 9 Terminal Screws 10 Conduit Inlet 11 Cable Tie Figure 5.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Figure 6. Terminal Board Configuration Legend: 1. Function Switch (SW1) 2. Alarm Delay Switch (SW2) 3. Ground Cable 4.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Figure 7.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 6.8 Selection Of Operating Modes When wiring is completed the operational mode can be selected. Mode selection is achieved by means of two DIPswitches listed below: SW1 - Function switch SW2 - Alarm Delay switch Function switch (SW1) Modes of operation are selected by DIPswitch (SW1) according to the selection table (Table 4 at section 4.3.1).
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, 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 up to 40 seconds for the automatic self-test of the detector. Note: Applying power initiates the following sequence: • The yellow LED blink (2 Hz) BIT is executed. If successful then: • The yellow LED blink (0.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 7.4 Functional Testing Following is a testing procedure for proper wiring and functioning of the detector. Important Note! If SW1 switches 7 or 6 are in their “ON” position the Alarm and Accessory Relays 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.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 7.6 Safety Precautions After powering-up, the detector requires minimal 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. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, 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 any invalidate the warranty. Whenever a unit requires service, please contact the manufacturer or its authorized distributor for assistance. 8.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, 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, installation date, contractor, and entries for every maintenance operation performed including the description of the operation, date and personnel ID.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Appendix A - Wire Selection Tables GENERAL INSTRUCTION FOR ELECTRICAL WIRING: 1. Refer to Table 10 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, length of wires. 2. Refer to Table 11 to select wire gauge for detectors power supply wires. DO NOT connect any device or load to detectors supply inputs. Table 10.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Appendix B. Typical Wiring Configurations Wiring for Four Wire Controllers: Figure 8. Typical Wiring Diagram for Four-Wire Controller 4-20mA Interface Wiring: Figure 9.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Appendix C. 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. 10). The unit is prewired to the terminals in the additional EExe terminal section ready for field wiring connections 1.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 2. Wiring Refer to Fig. 10. 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 M25x1.5 explosion-proof conduit connection to assemble the conduit to the detector.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Figure 10: Flame Detector Assembly - Wiring Diagram 1 2 3 4 Description Modified Back Cover 5 Ground Terminal Chamber Cover 6 Mounting Thread Slotted Screw 7 Chamber Terminal Block 8 Conduit Inlet (M25 x 1.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 2.1 Terminal Wiring The detector contains a chamber consisting of a terminal block (Item 4). The terminal block is labeled 1 to 6. (See Fig. No.10.) Table 12. Terminals wiring options of the detector Alarm Relay & 4-20mA Version Alarm & Fault Relays Version Option A (See Fig. No. 11) Option B (See Fig. No.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Appendix D. Long Range UV/IR Fire Simulator Figure 13: Fire Simulator Product Description The SharpEye UV/IR Long-Range Fire simulator 20/20-311 is designed specifically for use with the UV/IR or UV flame detectors. The Fire Simulator emits UV/IR radiation in a unique sequential pattern corresponding and recognizable by the detector as fire.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Figure 14: UV Detector Target Point Caution: 1 The following test will simulate a real fire condition and may activate the extinguishing system or other alarms. If this is not desired, disconnect them before the test and reconnect after the simulation. 2 Please note that if your flame detector mode is in “High UV protection enabled” - switch SW1-3 ON, a beam collimator should be used.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004 Battery Charging 1 The Fire Simulator uses NiCd 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. 2 Place the Fire Simulator into the storage case on a table in a safe area.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, 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 Rechargeable1.2 VDC NiCd Batteries Current: 2.5A Avg.
Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, 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.
