SafEye 300 Series
Contents
1. eere 32 5 5 5 Duct Mount Alignment Figures 11 12 seen 35 5 6 Detector Wiring see appendix D if EExde version used 37 5 6 1 Conduit Cable Installation 37 5 62 Harress Connection Figure 1 users dad Smed 38 5 6 3 Detector Terminal WINNE aeo sas 40 5 7 Light Source WIEBWIB 41 5 71 Power Supply MR 41 5 7 2 Harness Connection Figure o 25 Cea 41 5 7 3 Terminal Wiring Table 41 6 43 43 6 2 Alignment of Unit Figures 15 through 16 Using Swivel Mount 43 6 3 Alignment of Unit Figure 7 8 Using Tilt Mount eeeesesssesvvenssesveenssesseenesensseneee 46 6 4 Powering on the 47 6 5 5 5 47 6 6 Zero OE ERE 47 6 7 Functional Check of Unit 48 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 7 Maintenance InstructiOnS srsrsvsvrnvnvnvnvnnnnnnvnvnnnnnnnnnnennnnnnnnnnennnnnnnnenenenenenennnnnnennen 492. SatEye LIGHT SOURCE Figure 1 Light Source Reflector Type Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 2 6 2 Detector Unit Figure 2 The detector s sensors receive the transmitted pulsed radiation signals from the Light Source The signals are then amplified and fed into an analog to digital signal converter to be processed by the internal microprocessor When the signals drop below prescribed level the internal microprocessor will compensate for them This will allow the signal to be maintained even in severe weather conditions The data is sent to the output interface section The signals can be sent to standard control panel or to central computer The Series 300 Detector is available in two basic types 1 Model OP ILOOOX for short range installation 2 Model OP IL100X for medium range installation TELESCOPE BASE ASSY IR GAS SENSORS INDICATION LEDS Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 3 Operation Mode The SafEye system has three operation modes Normal Alignment and Zero Calibration 3 1 Normal Mode This mode is used for gas detection The following status signals are possible see Table 2 for visual indications Normal Signal received from gas detection is at safe levels Warning Gases have been detected at warning levels Alarm Gases have been detected at alarm levels 3 2 Fault Mode The
3. 2 lt can be a discrete indication according to the detector mode or the Warning or Alarm signal at a defined gas concentration Setting of this method can be done by SW3 2 selection see Table 5 The 4 20mA functions as current source The maximum permitted load resistance for the 4 20mA output is 600 ohms The minimum permitted load resistance is 100 ohms 10 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Table 4 Standard default 4 20mA Current for the Gas Channel Curen Status and Description 4 20mA Continuous measuring of gas concentration at a range between 0 and 5 LEL m or full scale 21mA Concentration is over the range limit more than full scale concentration Table 5 Discrete reading of 4 20mA at different detector s modes Faul2orLow Voltage 7250544 Fa 4 05mA Sandy 305m 06 302 Ep 3 7 2 Relays The detector includes three relays e Fault relay e Alarm relay e Accessory relay Fault Relay contacts are normally energized closed and opened when in Fault condition 3 7 3 RS 485 Interface The RS 485 input output sends complete data information to a PC and receives data or control commands from the PC The communication with the PC is operated through this interface is executed only when used with appropriate host software The following PC minimal hardware requirements are as follows e 386 PC using DOS Ver
4. Series 300 Open Path Gas Detection System User and Maintenance Manual TM 794100 Rev D June 2004 UL Approved ATEX Cenelec Approved E209870 Class I Group C and D Ex II 2G EExd H T5 EExde H2T5 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 inc com The SafEye monitoring system 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
5. 5 0 or higher 1 MB RAM 2 MB free hard disk space 1 2 or 1 44 MB floppy drive Color VGA RS 485 Interface Card to be defined as COM1 or COM2 Isolated Adapter is preferred 11 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 3 8 Terminals Terminal outputs are described for the Detector and the Light Source For EExde version with separate EExe terminal section see Appendix D 3 8 1 Detector Terminal Terminal Wiring Figure 3 displays schematic diagram of the terminals and Figure 4 shows their location 1 Power 18 32VDC Alignment Strobe N 0 Fault Relay Closed Contact When Detector Activated Accessory Relay N 0 4 20mA OUT 4 20mA IN 8 485 iod Figure 3 Detector s Wiring Diagram 12 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Terminal Board 4 5 Figure 4 Detector Terminal Board Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 3 8 2 Light Source Terminals Figure 5 shows the terminal board and Table 6 describes their use Figure 5 Light Source Terminal Board Table 6 Light Source Terminals ight Source D Terminal Number 14 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 3 9 System Setup 3 9 1 Detector Setting The detector consists of the following DIPswitches which enable the use
6. and press the Base Plate Gasket 2 to the Installation Surface against the Internal Plate The Internal Plate Screws should be inserted into the Gasket holes and hold it from falling Then remove your hand and repeat the process for the second Internal Plate Attach the Base Plate 3 to the Gasket 2 carefully The Intemal Plate screws should be inserted slightly to the Base Plate holes Secure the Base Plate to the Installation Surface using four Nuts and Flat Washers 4 Attach the Window Plate 5 by threading its holes on the Base Plate Screws The Window 7 Protection Ring of the plate should be directed outside Secure it by four Nuts and Flat Washers 6 Alignment Plate installation Screw together the Internal Vertical Alignment Nut and the Washer 9 to the Base Plate Screws Then thread the Alignment plate 8 on the screws Connect the two External Alignment Nuts and Flat Washers 10 without fastening The Plate is now connected Connect the Horizontal Alignment Screw with the Nut and Flat Washer 11 directed according the illustration The Alignment Plate should be held but set free for alignment At this point the Duct Mount is ready for alignment 32 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 ai 2 14 2 PLACES s 4 PLACES 1 Internal Plate Internal Vertical Alignment Nut and 2 Base Plate Gasket 10 External Alignment Nut and Fl
7. gt 2 6 D ScriptiO ee HQ 2 61 Light Source NS d Utd en ded vL 6 2062 Detector Unit E19 Ule sa pads eu aoa e tipa taa ud 7 3 Operation 8 3 2 Falt 3 3 Alignment S 3 4 Zero Calibration Mode 1mA Output essesoessesocscssossocscsoosscsocsossocsosocesosscsoeesesse 3 5 5 52 cL 3 6 Visual Indications I SES IDE pec LO 3 7 1 4 20 Current OUQULE itecto tte e ast dads emet D ee se ES 10 SEU OL CM E oL NN 11 3 7 3 RS 485 Interface hes hans 11 35 2 3 01 Detector Terma esta dyreste 12 3 8 2 Light Source Terminals 14 3 9 System LO Detector NN 15 4 Technical Specifications nennnnvnvnvnvnnvnvnvnennnnnnvnnnnnnnnnnnnnnnnnnnnnenennnnnnnnenennnnnnnnenennnen 19 4 1 General Specifications esssesesesnsesnesnessneennesnenessesnensnnesnnssnnesnnennnesnennsnesserssnesess rere 19 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 4 2 Electrical Specifications 20 4 3 Mechanical Specifications eessesssvssvessevssesesessnenseessersssesnessnesssssnness
8. 794100 Rev D May 2004 6 4 Powering on the system Important Prior to any operation or maintenance follow the Safety Precautions given at section 6 5 Make sure that the source and detector are connected to the power Make sure that the 4 20mA meter is connected to the detector Power up the system 18 32VDC After 60 seconds the left LED lights at green the current meter will indicate 4mA Note If it is the first operation after installation the LED may indicate any status Zero calibration should be performed after powering the system see section 6 5 6 5 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 open the detector housing while power is supplied Do not touch internal parts other than the two functional switches Interference with internal circuits may impair detector performance and will invalidate manufacturers warranty 4 Disconnect external devices such as automatic extinguishing systems before carrying out any maintenance task 6 6 Zero Calibration Precise alignment must be performed prior to the calibration procedure Calibration should be performed in nice weather conditions with insignificant gas concentrations in the surrounding environment or indoors N
9. D 2004 none of the four calibrations are appropriate Spectrex through local agents can advise how to calibrate a SafEye Detector to any specific gas 2 4 Product Marking The SafEye 300 Series open path gas Detector and source unit are certified to 1 ATEX Ex II 2 per SIRA 00 ATEX 1161 amp 1165 EExd IIB H T5 and EExde IIB H T5 Amb Temp 40 C to 70 C 2 UL E209870 Class Group C and D 2 5 Models and Types This manual includes information for SafEye Series 300 models Table 1 identifies the detector model options in reference to the required gas type and detection range Table 1 Model Selection Guideline for SafEye Series 300 IR Type Option Option for for Duct St St Mount Enclosure 2 115 0 63 5 OP IL000x OPS Llox 98 49 OP ILT00x OPS LICx Notes For standard installation add 5 suffix For duct installation add D suffix For St St version add St suffix after the D or the 5 suffix Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 2 6 Description The system comprises two main units the Light Source and the Detector The SafEye system detects gases over an open path transmitted from the Light Source to the Detector 2 6 1 Light Source Unit The Light Source unit emits IR radiation pulses in a collimated beam for maximum intensity to the detector unit The model number is OPS LIOx Figure 1 TELESCOPE BASE COVER
10. Locate the Telescope Aim Figure 12 item 3 to be in vertical to the Installation surface Look at the Aim view and locate the Aim Cross in the middle of Installation Surface Hole on the opposite side Rotate the Vertical and Horizontal Nuts Figure 11 items 10 14 to achieve best result Provide stability of the plate by securing and releasing the opposite nuts or screws gently Repeat step 3 until best result is achieved Provide final Screws and Nuts securing Figure 11 items 9 11 Remove the Alignment set carefully by unscrewing The Nuts and Screws from the Hole Figure 12 item 2 Perform detector wiring according to section 5 6 Note that in case of Air Duct installation the Detector is mounted at the front side Therefore it must be removed from its mounting before any cover opening Install the Detector Light Source on the Alignment Plate Figure 11 item 8 Secure the Detector Light Source with Nuts and Flat Washers Figure 11 item 15 35 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 Description Telescope Plate Detector Light Source Securing Screw Hole Telescope Aim Figure 12 Telescope Alignment Set 36 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 6 Detector Wiring see appendix D if EExde version used This section does not attempt to cover all of the standard practices and codes
11. Section 1 Scope a general introduction and overview of the product and the Manual with a brief description of its content Section 2 Technical Description the Detector s theory of operation Section 3 Operation Mode the Detector s operation modes user interface and indications Section 4 Technical Specifications the Detector s electrical mechanical and environmental specifications Section 5 Installation Instructions including wiring and mode setting Section 6 Operating Instructions and power up procedures Section 7 Maintenance Instructions and support procedures Section 8 Troubleshooting Appendix A Wiring Selection Tables for electrical wire selection according to installation configuration Appendix B Wiring option Configurations wiring diagrams for installation Appendix C Detector and Source Outline Drawing Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 2 Technical Description 2 1 Features Operating distance from 2ft 0 6 up to 49 ft 15m Simultaneous detection of C1 Cg flammable gases High Sensitivity and fast response to Hydrocarbon gases Continuous operation in extreme and harsh environmental Conditions Withstands extreme vibration conditions Interfaces with most commonly used control panels Standard 4 20mA and Dry Contact Relays Outputs RS 485 Output for PC Communication Network for a maximum of 64 systems Simple one person installation alignm
12. TM 794100 Rev D May 2004 J 2 0we 6 Securing Cable Condut cableiniePlups 7 ScewHoe 4 Ground Terminal Screw 8 DlPsWiohes Figure 14 Light Source Open View 42 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 6 Operating Instructions 6 1 SafEye Operation Once the system is positioned it will monitor for possible specified gases automatically sending signals to a standard control panel or a This chapter describes the alignment calibration and operation mportant Accurate Alignment is essential for proper operation of the SafEye system 6 2 Alignment of Unit Figures 15 through 16 Using Swivel Mount See 6 3 for Alignment using Tilt mounts This section applies to open path installation only For duct mount applications the alignment is performed according to section 5 5 5 Therefore skip steps 1 through 10 when duct mount installation is performed The Telescope is used for full alignment Alignment procedure should be performed in two stages Crude alignment then fine adjustment The Telescope includes a Periscope that consists of a prism and an ocular located vertical to the Telescope assembly This allows the user to observe the opposite unit perpendicular to the alignment when access from the rear of the unit is difficult impossible In installations where rear access is possible the Periscope is not necessary In this case it can be remove
13. The incoming signals are analyzed by the built in microprocessor A sophisticated mathematical algorithm calculates between the various functions of the detected signal thresholds Statistics ratio algorithms data communications diagnostics and other functions are performed Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 2 3 5 Gas Sensitivity The SafEye IR Model uses wavelengths around 3 4u spectral band to measure air flammability potential between the source and detector At this wavelength all hydrocarbon materials have a strong absorption peak This peak enables the detector to achieve both regular sensitivity of 0 5 LEL m or highsensitivity of 0 2 LEL m according to functions set up In the short range duct Model 301 the standard full scale is 2 5 LEL m or 1 LEL m by DIPSwitch However since the desired detection information is air flammability and the actual measurement is radiation absorption around the 3 4u spectral band the detector has a different sensitivity to different gases or gas combinations This difference in sensitivity is irrelevant if in the protected area the gas composition is known However if in a protected area the gas composition can vary substantially then the difference in sensitivity should be considered in determining the Detector calibration 2 3 6 Gas and Mixture Selection and Setting At the 3 4 spectral band of the SafEye the least sensitive gas is pure 100 v
14. e Discrete reading See Table 5 B Communication Network The Detector is equipped with an RS 485 communication link that can be used in installations with computerized controllers It enables continuous communication with up to 64 Detectors C Relays Output The Detector include up to three relays Table 13 Dry Contact Relays Relay Type Normal MaximumRatings 0 SPDT NO NC 2A at 30VDC or 0 5 at 250 VAC S at 30VDC or 250 VAC SPST 5A at 30VDC or 250 VAC Fault Relay is normally energized the contact will be closed and when it is in Fault situation the relay is opened 20 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 4 3 Mechanical Specifications Enclosure The source and detector housings are made of either anodized aluminum with less than 1 Mg with an epoxy enamel finish or St St 316L enclosure with electro polish finish The back covers are all sealed with special O rings to prevent intrusions such as dust salt and sprays The circuit boards are conformal coated and protected from mechanical vibrations and a slight impact Alignment Base is Stainless Steel 316L for all models Explosion Proof ATEX Cenelec Exll2G EExd IIB T5 EExde IIB H2 T5 Temp 40 F 40 C to 158 70 UL E209870 Class Group C and D hazardous Location FM Class I Div 1 Group B C and D Designed to meet Class II Div 1 Groups E F and G Electrical Modules Conformal c
15. gases present e Clear path between the Light Source and Detector e Clear weather conditions Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Zero calibration must be done after installation re alignment and window cleaning using magnetic mode selection 3 5 Mode Selection A Magnetic Mode Selector is used to change to alignment and calibration modes by placing the magnet on the side of the detector Figure 16 3 6 Visual Indications LEDs There are two indicators LEDs located in the detector s front window referred to as the right and left LEDs They display red orange and green light that can be either On steady or flashing or Off Table 2 LED Status Indication Right D 4 20 ME RED status output Normal Green o On Waming SeeNote4 Of On i4mA SeeNote4 _ Hed On 19 DNE NUN NA Fault 2 222222 Orange On Om Low Orange Orange LEDs 0 Voltage flash at rate of 2Hz Alignment First receives the Mode intensity compared to the last calibration The intensity is min 80 of the last calibration intensity Green Green 0 mA 80 60 Orange Gren 60 or less Red Orange 0 After 20 seconds Note 0 mA the color represents the signal intensity See Note 2 Standby Green Green Both LEDs mode flash alternately at a rate of 2Hz Calibration See Note 3 0 m
16. of installation It emphasizes specific points providing the basic concept for qualified wiring installation personnel arning Do not separate or close the housing section from the cover while the power is at on position It is very important that the Cover and Housing sections be exposed to the environment for the least amount of time due to the internal circuitry Proper planning of the wiring is required in order to reduce the amount of time the Cover and Housing sections are apart 5 6 1 Conduit Cable Installation 1 2 To avoid water condensation the detector it should installed with the conduits electrical entries facing downward When using the Swivel Mount or Duct Mount use flexible conduits for the last portion connecting to the detector When pulling the cables through the conduits ensure that they are not tangled or stressed Extend the cables about 12 in 30cm beyond the detector location to accommodate wiring after installation After the conductor cables have been pulled through the conduits perform a continuity test 37 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 6 2 Harness Connection Figure 13 T 2 8 9 Remove the four Threaded Plugs 13 from detector front Release the four Socket Head Screws 14 that secure the detector housing 1 to its back cover 2 using No 5 Hex Key for M6 screw Hold the housing during the r
17. off open impedance matching 18 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 4 Technical Specifications 4 1 General Specifications Detected Gases Simultaneous detection of C1 Cs flammable gases Detection Distance range Table 11 Detection Distance Range Distance f 2115 98 49 Distance 06351 375 Spectral Response 3 0 4 0 micron Sensitivity Range Table 12 Sensitivity Range 302 0 25LELm 0 5 LEL m DiPswitch 0 1 LEL m 0 2 LEL m Field of View Line of Sight Alignment Tolerance 22 Drift Long term 5 of full scale Temperature Range 40 F 40 C to 158 F 70 C Immunity to false alarm Does not produce false alarm by Hydrocarbon Flames and must of IR Radiation Sources 19 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 4 2 Electrical Specifications Operating Voltage 18 32 VDC e Power Consumption Detector 150 mA 24 VDC 200 mA Peak Source 100 mA 24 VDC 220 mA Peak e Electrical input protection The input circuit is protected against voltage reversed polarity voltage transients surges and spikes according to MIL STD 1275A e Electrical Interface see figure 4 e Electrical outputs A 4 20mA Current Output The 4 20mA is source configuration The maximum permitted load resistance is 600 Ohm Two 4 20mA options Continuous reading default See Table 4
18. 7 1 General Maintenance A 49 7 2 Periodic Maintenance 49 7 2 1 Routine Optical Surface Cleaning 50 T2 2 St nal Verification a aee tai 1 a R R ES 50 Check or E DRE 51 724 Maintenance Records as rinine aa aS 51 8 52 Appendix A Wire Selection Tables rennes 53 Appendix B Wiring Option configurations ceres 55 Appendix C Outline Drawing rsrarnennnnvnvnvnnnnnnnnvnnnnnnnnnnnnnnennnnnnnnenennnnnnenenenennnnnnnnnnnnnenen 59 Appendix D Mounting the EExde approved version 63 LisT OF FIGURES Figure I Light Source Reflector Type Mune 6 Figure 2 Detector Tee E 7 Figure 3 Detector s Wiring Digi uiu 12 Figure 4 Detector Terminal Board 13 Figure 5 Light Source Terminal Board SENT 14 Figure 6 Detector Light Source and Swivel Mount Assembly for Standard Installation 26 Figure 7 Tit Mount Assemblyus uiu diens io 27 Figure 8 Detector Source and Mount Assembly sse 28 Figure 9 Drilling Layout Dimensions for Duct Installation eese 31 Figure 10 Detector Light
19. A mode Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Notes 1 The number of flashes shows the intensity of the received signals while the color represents the gain see Table 3 The left LED shows the tens unit of the number while the right LED displays the unit of the number of the signal intensity Each LED will flash 0 to 9 times 9 being the maximum possible signal intensity When the left LED has reached its highest signal look at the right LED for fine adjustment Table 3 Alignment Indication LED Color RightLED 3 Orange Orange Orange 2 1 Green Orange Green Green 2 After 20 minutes at alignment mode the detector will return to normal mode 3 After zero calibration is finished the detector will return to normal mode and the signal intensity will be saved for next alignment comparison 4 The 4 20mA level in this Table refers to discrete indication option A different continuous reading option is described later in section 3 7 1 3 7 Output Signals The SafEye system provides the following outputs e Standard 4 20mA port e Three dry contact relays e Optional RS 485 Output for PC Communications 3 7 1 4 20mA Current Output The 4 20 output can provide the detector status measurement in one of the two following methods 1 It can be measured proportionally default showing a continuous reading of the exact gas concentration see Table 4
20. Eye 300 Gas Detector Manual TM 794100 Rev D May 2004 Figure 23 Detector and Tilt Mount Outline Drawing 61 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 Figure 24 Source and Tilt Mount Outline Drawing 62 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 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 25 The unit is prewired to the terminals in the additional EExe terminal section ready for field wiring connections 1 Detector Source Mounting The detector should be mounted by one of the following options a Swivel mount refers to paragraph 5 4 1 b Tilt mount refers to paragraph 5 4 3 c Duct mount refers to paragraph 5 5 1 1 Installation All the installation instructions are the same as defined in Paragraph 5 4 1 5 4 3 and 5 5 On swivel mount option there are two options of detector source install on the swivel mount You can use the thread on the de cover marked either Triangle Symbol or a Square Symbol Figure 25 b On tilt mount option you must use the Triangle Symbol c On duct mount the detector is installed from the front of the detector 2 WIRING REFER TO FIG 25 1 Disconnect power 2 Release the four 4 slotted head screws item 3 that sec
21. HORROR 53 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 1 Scope 1 1 Product Overview The SafEye 300 Series is an IR Open Path Gas Detector that detects ambient combustible gases at LEL m concentrations over a path length from 2ft 0 6m up to 49 ft 15 m even in harsh environments where dust fog rain snow or vibration can cause a high reduction of signal The shorter path lengths are usually associate with application in ducts air intakes to provide fast response to ingress of flammable gases Due to its unique combination of triple optics and duakspectrum reference sensor the SafEye can maintain operation in up to 90 signal obscuration and 2 degree of misalignment SafEye has a fast response detection time of no more than 2 10 seconds This feature enables an adequate time to take appropriate safety measures The SafEye Source and Detector unit enclosures are ATEX certified EExd flameproof or EExde with additional separate EExe terminal box connected to the unit This manual consists of a full description of the Detector and its features It contains instructions on the installation operation and maintenance The system is intended to be operated by qualified personnel 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
22. Screw mportant Notes Prior to Telescope Installation verify that the Telescope and its Sight Mounting are free from any dirt to ensure proper alignment according to factory calibration Donot attempt to change any factory calibration at the Telescope or its mounting This may prevent optimal alignment Alignment procedure refer to Figure 8 1 Make sure that the Detector and the Light Source are installed properly Installation instructions are described in section 5 of this document 2 Install the Telescope Assembly 9 on the Telescope Site Mounting of the Source according to the drawing Fasten the Telescope with Fastening Screw 10 3 Crude Alignment Source Use 1 4 Allen screwdriver for all alignment screws Loosen screws 5 6 Approximately aim the Source horizontally toward the Detector Tighten screw 5 Loosen screws 3 4 Approximately aim the Source vertically toward the Detector Tighten screw 3 4 Repeat 3 for the Detector 5 Fine Alignment Source a Aim the source at the Detector within horizontal axis using screws 7 Aim the cross to the upper level of the telescope site of the detector Tighten screw 6 Aim within the vertical axis using screw 8 Tighten screw 4 Make sure the telescope cross is pointing at the top of the telescope site of the detector 4 Repeat 5 for the Detector fine alignment o 7o200c0p9 46 Spectrex Inc SafEye 300 Gas Detector Manual TM
23. Screw 2 4 Periscope 9 Horizontal Adjustment Screw 2 Periscope Fastening Screw Adjustment Screw Securing Nut Figure 16 SafEye Light Source Detector Alignment 44 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 4 Detector Crude Alignment Refer to Figure 16 for all the following instructions a Use 3 16 Allen screwdriver to loosen up the 3 socket set screws 7 b Tiltthe Light Source in the general direction of the Detector Rotate the Periscope 4 until its ocular is positioned in front of your aiming eye for most conveniert observation d Observe through the Periscope 4 and locate the Detector in the center of view of source unit e Tighten three socket set screws 7 of the Detector s Swivel Mount 5 Release the Fastening Screw 3 and remove the Telescope from the Detector 6 Light Source Crude Alignment Repeat Steps 3 through 4 for the Light Source 7 Light Source Fine Adjustment a Release the Adjustment Screw Securing Nuts 10 from all Adjustment Screws 8 9 to enable fine alignment b Watch through the Periscope 4 The cross midpoint inside the Telescope Lens should be aimed to the opposite unit Light Source such that it is observed in the Periscope Rotate the Vertical Adjustment Screws 8 and the Horizontal Adjustment Screws 9 This should be performed until the cross midpoint is combined with the center of the top of the Light Source Tel
24. Source and Duct Mount Installation scheme 33 Figure 11 Duct Mount Installation Outline Drawing sse 34 Figure 12 Telescope Alignment se ooo peek tot 36 Figure 13 Detector with Cover removed uiu 39 Figure 14 Light Source Open View 42 Figure 15 Alignment and Mode Selection 44 Figure 16 SafEye Light Source Detector Alignment esee 44 Figure 7 Detector s Wiring Diagram uices ipii reete decre pira awn 55 Figure 18 4 20 Source Output 56 Figure 19 Typical 4 Wire 56 Figure 20 RS 485 te eitis RH RAIN Atta 57 Figure 21 Detector Outline Drawing With Swivel Mount esses 59 Figure 22 Source Outline Drawing Reflector Type With Swivel Mount 60 Figure 23 Detector and Tilt Mount Outline Drawing 61 Figure 24 Source and Tilt Mount Outline Drawing essen 62 Figure 25 Flame Detector Assembly Wiring Diagram 64 Figure 26 OPTION A Detector Assembly Wiring Diagram essen 65 Figure 27 OPTION B Detector Assembly Wiring Diagram 65 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 LIST OF TABLES Table 1 Model Selection Guideline for S
25. activated during the calibration check should be disconnected 1 This functional verification procedure is for a standard 4 20mA output 2 Prior to starting the functional check verify that the power to the units is on and that the current of the 4 20mA channel is stable Record the reading 1 Position the Functional Check filter in front of the SafEye Detector 2 The functional check filter s window must be centered over the viewing window of the Detector 3 Wait 20 seconds 4 Readthe 4 20mA current Determine the difference between the reading taken with and without the Functional Check Filter This difference is the 4 20mA current variance 5 Record the 4 20mA current variance in a Maintenance Logbook If the variance is more than a 3096 change when compared to the previous check see delivery form repeat the alignment 48 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 7 Maintenance Instructions 7 1 General Maintenance The SafEye system requires only simple periodic maintenance to provide satisfactory service and achieve maximum performance The Detector and Source units can be maintained with the use of common tools and equipment Record the periodic test results in Maintenance Logbook with copy of the delivery form inside Note The maintenance can be performed through RS 485 for more details refer to TM792050 7 2 Periodic Maintenance Recommended cleaning of op
26. afEye Series 300 IR Type 5 Table 2 LED Status Indication bb 9 Table 3 Alignment Indication LED Color eese eene 10 Table 4 Standard default 4 20mA Current for the Gas Channel 11 Table 5 Discrete reading of 4 20mA at different detector s 11 Table 6 Light Source Terminals oe t ee eio ot Pa 14 Table 7 SWI DIPswitches Configuration 15 Table o Gas Type GalibratiomnmSellpi s deleti eerte e reckon 16 Table 9 SW2 DIPswitches Configuration uode tre 17 Table 10 SW3 DIPswitches Configuration eese eese eene nennen 18 Table 11 Detection Distance Range uso tetti itte eie dit Dex uence 19 Table 12 Sensitivity Range eta at ro diis e ec ap p eG Sle ata 19 Toe DA GORE vasre rier 20 Table 14 Detector Source Weight amp Dimensions eese 21 Te TD 25 Table Jo Tilt Mount Kit sos Nei UNES 27 Table T7 Duet MOUIT Kit cane and 29 Table 18 LED Signal e a ie dea eue na o Y ean 50 Table 19 Maximum DC resistance at 68 F for copper wire esses 53 Table 20 Wiring length in feet meter 2 eiie ee
27. all a technician for service if the SIC is less than 66 with both LED s flash in red color Table 18 LED Signal Adjustment olor left right Number to be added Red Red MESEN Orange Orange 50 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 At a hypothetical installation the LEDs Green Orange with 3 green flashes left LED and 6 orange flashes right LED The number is 36 124 160 The next periodic maintenance reading has Orange Orange LEDs with 8 orange blinks left LED and 8 orange flashes right LED The number is 88 62 150 The variance is 160 150 10 Units The percentage of variance will be 10 160 100 6 25 less then previous alignment 7 2 3 Function Check of Unit The SafEye system has been calibrated at the factory per the user s specific gas or vapor detection requirements This procedure validates the functional operation The functional check must be done periodically Refer to 6 7 for instructions Caution Automatic activation or any external device that should not be activated during the calibration check should be disconnected 7 2 4 Maintenance Records Record every maintenance operation performed on the Source and or Detector in a Maintenance Log book The logs should include but not be restricted to the following e The information identifying the measurement units e The date of installation and contractor e E
28. 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 Source and Detector are not field repairable due to the meticulous internal 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 SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 TABLE OF CONTENTS 1 1 Product OVOePVIEW ose erant ba cess eR a S APEEN VEN ERU Deed vla d saec ve ta epo pP E eina due 12 Document A 2 Technical DescrpNhkuunanaaautmmuasanannnusummaideundseegtniinn ike 2 PA LR EH Eten dE 2 3 Principle of Oper a Gm RD Dermitomns of Terms 25i a decise dee 3 2 32 Spectral Finger s 3 235 PP ane 3 2 3 4 Microprocessor Based 3 2 9 9 G s SES IN ve 4 2 3 6 Gas and Mixture Selection and 4 TTE TI UE 2 5 Models and
29. at Me 3 Base Plate 11 Horizontal Alignment Nut and Flat ether e and Flat Washer Window Plate Detector Light Source Window Plate Nut and Flat 14 Horizontal Adjustment Locking Screw Washer 7 Window 15 Detector Light Source Securing Nut and Flat Washer 8 Alignment Plate Window Nut Figure 10 Detector Light Source and Duct Mount Installation scheme 33 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 14 11 12 D Seere ana rit Washer and Flat Washer 2 Base Plate Gasket 10 External Alignment Nut and Flat Washer Washer Base Plate Securing Nut and Flat Washer Window Plate Detector Light Source Window Plate Nut and Flat Washer Horizontal Adjustment Locking Screw 7 Window 15 Detector Light Source Securing Nut and Flat Washer 8 Alignment Plate Window Nut Figure 11 Duct Mount Installation Outline Drawing 34 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 5 5 Duct Mount Alignment Figures 11 12 The following instructions are applicable for both the Light Source unit and the Detector unit 1 Connect the Telescope Plate Figure 12 item 1 to the Duct Mount Alignment Plate Figure 11 item 8 Insert each one of four Screws Figure 11 item 15 from the Duct Mount side through the Hole Figure 12 item 2 and secure it with Nut and Flat Washer Figure 11 item 15
30. clean the surface with a small soft bristle brush The surfaces must then be washed thoroughly with water and a mild non abrasive detergent Thoroughly rinse the glass surface with clean water ensuring no residue is left behind Dry the glass with a clean dry soft cloth Enter in the Maintenance Logbook Date name of person and company who performed the maintenance service Turn on power to the SafEye detector and source Perform signal verification section 7 2 2 Perform zero calibration see section 6 6 0 Perform functional check see section 6 7 7 2 2 Signal Verification The Signal Intensity Check determines if there is a misalignment or if the Light Source signal is wearing over a period of time Clean the optical surfaces prior to performing this check see 7 2 1 This procedure should be performed in clear weather 1 2 3 Enter Alignment Mode by placing the mode selector on the side of the detector for 2 seconds Within the first 20 seconds the Detector indicates 3 different indication levels See Table 1 Wait 20 seconds and count the number of LED flashes with the color and adjust the value see Table 18 Record the new results in the maintenance log book Determine the absolute variance compared with the previous alignment reading in the maintenance logbook If the variance is more than 30 perform alignment see section 6 and zero Calibration see section 6 6 C
31. curate alignment capability 29 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 5 2 Duct Alignment Set Figure 12 and Accessories Air Duct Installation has a limitation which is the disability of viewing the Detector s front and performing fine alignment through detector aiming such as performed in standard installation As a result fine alignment of the Detector s Mount should be performed before the detector assembly is mounted to it The Alignment Set solves this problem by enabling the installer to align the Detector Mount first and then to install the Detector The Alignment Set includes a Mount that is identical to the Detector Mount Surface and a telescope that is installed in the middle of the Mount Surface The Telescope is centered in the Duct mount in a way that it is located in the same optical axis as the detector that will be mounted later in the same location The Accessories supplied with the kit includes one No 10 Key for installation and for alignment One Accessories Set is supplied for each installation 5 5 3 Duct Installation Surface Preparation Figure 9 The following instructions are applicable for both the Light Source unit and the Detector unit 1 Check the Air Duct Installation Surface 1 stability It should be as near as possible to a rigid girder connection in order to assure proper support to the mounting and the unit Also the surface must be stable and free
32. d by releasing the Periscope Fastening Screw item 5 at figure 16 mportant Notes a Prior to Telescope Installation verify that the Telescope and Its Sight Mounting are free from any dirt to ensure proper alignment according to factory calibration b Do not Attempt to change any factory calibration of the Telescope or its mounting This may prevent optimal alignment 1 Make sure that the Detector and the Light Source are installed properly Installation instructions are described in section 5 of this document 2 Refer to Figure 15 Slightly release four Protective Sight Covers screws Figure 15 item 6 from the Detector and the Light Source Do not remove the screws from the Covers Remove the Protective Sight Covers Figure 15 item 7 from the Detector Light Source Assembly Store the Cover in a clean place for reinstallation after alignment is completed 3 Refer to Figure 17 Install the Telescope Assembly 1 on the Telescope Sight Mounting 2 of the Detector according to the drawing Fasten the Telescope with Fastening Screw 3 43 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 2 DeledorHousng 6 Sight Cover 74 Vertical Adjustment Screw 8 _ Adjustment Screw Securing Nut Figure 15 Alignment and Mode Selection Telescope Assembly 6 Light Source Detector Housing Sight Mounting Socket Set Screws 3 2 Telescope Fastening Screw 8 Vertical Adjustment
33. d practices trained for gas detection maintenance should be employed Wiring should only be performed or supervised by someone with knowledge of electronics and in particular wiring installation 5 2 2 Tools Required The SafEye system requires the following tools Set of screwdrivers Set of hex keys Allan wrenches supply with commissioning kit e Voltage Multimeter 5 2 3 Site Requirements The installation position of the SafEye system must take into account if the gas being monitored is heavier or lighter than air the prevailing wind directions and the individual site requirements The site selected must give the Detector a direct view to the Source The mounting point for each item should be secure and stable with minimal vibrations Equipment should be either mounted in a position where it cannot be knocked out of alignment or guarded from physical impact 5 2 4 The Source and Detector The appropriate Detector should be selected for the length of open path to be monitored To allow for ageing of the Source and a reduction of the IR signal due to adverse weather we recommend using a Detector that is not at the limit of its operating range As a guide select a Detector that is installed at a distance from the Source of not more than 75 of the specified operating distance In severe weather conditions such as offshore oil production and exploration this should be reduced to 50 23 Spectrex Inc SafEye 300 Gas Det
34. ector Manual TM 794100 Rev D May 2004 The open path between the Source and Detector and the immediate surroundings should be kept clear of obscuration that might hinder the free movement of air in the protected area or block the infrared beam 5 2 5 Guidance Tips for Gas Detector Locations Guidance Tips for Gas Detector locations in order to provide the best detection coverage 1 Below potential leak source for heavier than airgases 2 Above potential leak sources for lighter than air gases Near to leak sources along the expected leak trajectory taking into account prevailing wind directions 4 Between leak source and potential ignition sources 5 area with expected heavy fog rain or snow consider the effect of long range installation and install the detector at shorter range with the maximum intensity model available 5 3 Preparations for Installation 1 Upon receipt verify the appropriate Purchase Order and record the Part Number and Serial Number of the Source and Detector units in the appropriate Log Book 2 Carefully unpack the following equipment observing any instructions printed on or contained in the packaging list Check the contents for any possible damage caused from shipping and handling In the event of damage or loss in transit notify the carrier and your Supplier immediately The System should include the following in addition to this manual Detector unit e Source unit Two tilt
35. eessnesseesssnssenenee 21 4 4 Environmental Specifications eseseseervessvesnsensennneensennsesnsensensnsensennnsensennssnseseesseenee 22 5 Installation 61 23 ER 23 5 2 General Considerations 23 32 PENE TSN 23 5 2 2 Tools is pee e una ea OPEP dan 23 532 SLE gea a OO S ENER 23 5244 The Source ADELENS snevre 23 5 2 5 Guidance Tips for Gas Detector 2 24 5 3 Preparations for Installation eessesssesseessevsseesssvsvessssssnessnessesssvesserseessssssnesseessnesee 24 5 4 Mounting for Standard Open Path Installation eere 25 54l Swivel Mont NRS 25 5 4 2 Swivel Installation Figure 23 TT MT Luca 27 5 4 4 Detector Source Installation Figure No 7 29 5 5 Mounting for Duct 1 1 29 5 5 1 Duet Mount Set Figure 10 11 29 5 5 2 Duct Alignment Set Figure 12 and 30 5 5 3 Duct Installation Surface Preparation Figure 9 sess 30 5 5 4 Duct Mount Installation Figures 10 11
36. elMout 1 Swivel Mount 1 Screw 1 4 20UNC or M6 x 1P Detector Holding plate 1 4 Spring Washer Detector Holding plate 5 4 2 Swivel Installation Figure 6 1 Place the swivel mount Securing Plate 2 in its designated location and secure it with four M6 or 1 4 20UNC screws 9 placed 3 in 76 2 mm apart Note Skip this step if the mounting is already installed Also detector removal for maintenance purpose does not require Swivel Mount removal 2 Unpack the detector carefully 3 Place the detector with its conduit inlets electrical entries pointing down on the holding plate of the swivel mount 10 Secure the detector by four 1 4 20UNC allen screws or M6 x 1P 8 with 1 4 spring washers from the swivel mount kit use No 5 Hex Key for screws or 3 16 Hex Key for 1 4 20UNC screws 4 Tighten the three locking 3 8 24UNF screws 5 of the swivel mount ring until the friction in the ball joint holds the detector in its position Yet still permits it to be moved by hand applied force use 3 16 Hex Key 5 Point the detector towards the Light Source and make certain that the view of the area is not obstructed Secure the detector in that position by tightening the locking screws of the swivel mount ring 6 Repeat mounting and Swivel Mount installation described in this chapter for installing the Light Source The detector is now correctly located and ready for the electrical connection to the system pr
37. electric motors sirens etc connect an appropriate varistor over these contacts 4 20mA Output Terminals 11 and 12 are used for 4 20mA current output as specified in section 3 7 1 See Appendix B RS 485 Output Terminal 13 and 14 are used for the communication network See Appendix B 40 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 7 Light Source Wiring 5 7 1 Power Supply Input power is supplied to terminal 1 The return is connected to terminal 2 see figure 14 Note Ensure that the Light Source unit will receive minimum of 18 Volts DC and does not exceed 32 Volts DC Pre wiring requirements and wiring requirements are identical to the appropriate requirements for the detector as described in appendix A 5 7 2 Harness Connection Figure 13 The instructions for this are identical to the detector Refer to section 5 6 2 5 7 3 Terminal Wiring Table 6 The Light Source contains a terminal board Terminal Wiring Instructions are identical to the Detector Wiring instructions The Light Source consists of two wires only The Positive supply power connected to terminal 1 and the common return connected to terminal 2 Connect the Grounding Cable to the Ground Terminal Figure 14 item 4 outside the Light Source cover Figure 14 item 2 The detector must be well grounded to Earth Ground for proper operation 41 Spectrex Inc SafEye 300 Gas Detector Manual
38. emoval of the screws Pull the detector housing from its cover The cover remains attached to the detector swivel mount The housing slides under the cover and remains attached to it by a securing cable 8 Do not let cover simply drop but rather support it until it hangs The terminal board 12 inside the detector cover is now revealed Remove the protective plug 6 mounted on the detector conduit inlet Pull the wires through the detector cover 2 and secure them firmly to the cover using the cable tie 16 attached to it Use a 3 4 14NPT or M25 x 1 5P explosion proof conduit electrical entry connection to assemble the conduit cable to the detector Connect the wires to the required terminals 12 according to the wiring diagram See Appendix B Connect a Grounding Cable to the Ground Terminal 7 outside the detector cover 2 The detector must be well grounded to Earth Ground for proper operation Verify the wiring Improper wiring may damage the detector Check the wires for secure mechanical connection and press them neatly against the Terminal Board 12 to prevent them from interfering while closing the detector s housing Dress all wires so they will not interfere with the closure of the unit Seal the conduit inlet and outlet 10 Align the two connectors guide pins in the Housing section with the correct openings in the housing section 11 Carefully slide the Housing section onto the floating hol
39. ent and calibration ATEX Approved EX II 2 EExd IIB H2 T5 EExde IIB H2 T5 UL Approved E209870 Class I Group C and D Programmable configuration 2 2 Applications The SafEye system may be used to monitor flammable gas concentration in various applications such as fence line monitoring and area monitoring in processing facilities air intakes and duct installations in various industries including Petrochemical pharmaceutical and other chemical storage and production areas Flammable and toxic chemical storage sites and hazardous waste disposal areas Refineries oil platforms pipelines refueling stations and fuel storage facilities Hazardous loading docks transportation depots and shipping warehouses Engine rooms Compressor and pumping stations Hazardous enclosures and test cells LNG LPG Systems Offshore Floating Production Storage and Shipping vessels FPSO and fixed oil rigs 2 3 Principle of Operation The SafEye system detects gases through a dual spectral range monitoring analyzing the absorption of radiation caused by gases in the atmosphere and comparing it ratio to background atmospheric absorption Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 2 3 1 Definitions of Terms The following list defines gas concentrations measurement terms that are used in this manual LEL Lower Explosive Limit The minimum concentration of a substance gas vapor in air mixtu
40. es in the Female D Connector 12 Using the long handled Hex key tighten the four M6 1 0PX50 screws 14 13 Insert the four Threaded Plugs 13 38 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 6 Ground Terminal Screw 15 Screw Pan Head a 4 40UNC Sn 8 Securing Cable 16 Cable Tie Figure 13 Detector with Cover removed 39 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 6 3 Detector Terminal Wiring The detector contains a terminal board consisting of two terminal blocks Power Supply The input power is supplied to terminal 1 The Return is connected to 2 Note Ensure that the detector unit receives a minimum of 18 Volts DC and does not exceed 32 Volts DC Fault Relay The Fault Relay is normally open The SPST relay is at terminal 4 and 5 The contacts are normally energised closed when the detector is in normal operation Alarm Relay The Alarm Relay is SPDT Relay Terminals 6 and 7 are Normally Open and the contacts are closed when the detector is in the Alarm status Terminals 7 and 8 are Normally Closed and the contacts are open when the detector is in the Alarm status Accessory Relay The Accessory output is Normally Open SPST relay Its contacts are at terminals 9 and 10 It can be defined per user requirements See Appendix B Note To protect the dry contacts from voltage surges when connected to reactive loads
41. escope Sight Mounting Figure 16 item 2 d Carefully secure the four Adjustment Screw Securing Nuts 10 Release the Fastening Screw 3 and remove the Telescope 1 from the unit 8 Detector Fine Adjustment Repeat Steps 3 and 7 for the Detector 9 Repeat steps 3 7 and 8 if additional Adjustment is required 10 Upon alignment completion perform the following a Reinstall Protective Sight Covers on the Detector and the Light Source by screwing four Sight Cover screws Figure 16 item 6 b Return the Telescope to its Original case 11 Power on the system according to section 6 4 12 Perform zero calibration according to section 6 6 13 Perform Signal Intensity Check SIC according to section 7 2 2 14 Perform Functional Check FC according to section 6 7 45 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 6 3 Alignment of Unit Figure 7 8 Using Tilt Mount Using the Telescope performs full alignment Alignment procedure should be performed in two stages Crude alignment then fine adjustment The Telescope includes a Periscope that consists of a prism and an ocular located vertical to the Telescope assembly This allows the user to observe the opposite unit perpendicular to the alignment when access from the rear of the unit is impossible For installations where rear access is possible the Periscope is not necessary In this case it can be removed by releasing the Periscope Fastening
42. for 48 hours Water and Dust IP67 per En60529 IP66 per En60529 Dust Totally protected against dust Liquids Protected against immersion between 15 cm and 1m in depth Protected against all water jets from all directions Shock and Vibration Vibration Designed to meet MIL STD 810C method 514 2 procedure VIII Mechanical Shock Designed to meet MIL STD 810C method 516 1 procedure Electromagnetic Compatibility EMC The detector is designed and approved according to the following EMC requirements Electrostatic Discharge ESD IEC1000 4 2 1995 1 Conducted emission EN55011 Class B Radiated emission EN55011 Class B Radiated immunity ENV50140 1994 80 1000 MHz EFT B IEC801 4 1988 22 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 Installation Instructions The Detector and Light Source units can be installed and maintained with the use of general purpose common tools and equipment The installation procedure has to be performed by suitably qualified personnel 5 1 Introduction 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 suitably qualified personnel Special safety precautions are stressed wherever applicable 5 2 General Considerations 5 2 1 Personnel Only suitably qualified personnel familiar with the local codes an
43. ior to fine alignment Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 Description 1 Detector Light 2 Swivel Mount 4 Swivel Mount 5 Swivel Mount Locking Screws 7 Horizontal Adjustment 8 DetectorScrews Swivel Mount Plate 2 Securing Sorens 10 Swivel Mount Holding ME RN Figure 6 Detector Light Source and Swivel Mount Assembly for Standard Installation 26 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 4 3 Tilt Mount Kit The Tilt Mount kit includes the items listed in Table 16 as follows Table 16 Tilt Mount Kit DW em Tay Tilt Mount Spring washer EE SERE Base i5 Holding Plate 000 Figure 7 Tilt Mount Assembly 27 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 2 Detector base Horizontal fine alignment eee 3 Horizontal crude alignment tighten 9 Telescope je 4 Horizontal fine alignment tighten screw 10 Telescope tightening bolt 6 Vertical crude alignment tighten screw Figure 8 Detector Source and Tilt Mount Assembly 28 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 4 4 Detector Source Installation Figure No 7 and 8 1 Place the Tilt Mount holding plate Item 1 in its designated location and secure it with 4 fasteners through fou
44. ntries for every maintenance operation performed to include at least the description of the operation date and personnel ID e Signal intensity records with SIC results e Calibration check CC results If the unit s is are sent to the authorized Supplier a copy of the Maintenance Records must accompany the unit concerned 51 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 8 Troubleshooting Problem Cause Soluton LEDs are off and Fault is Power is not supplied to Supply power to the Both LEDs are on at Fault 2 Bring the detector unit for yellow and fault is service Both LEDs are flashing at Low voltage is supplied Check the voltage level indicated at OmA level One LED is on at yellow Dirt has accumulated on Clean the optical and 4 20mA indication the detector s window or windows See Section level is 2 on the Light Source s 7 2 1 window One unit at least has Perform Realignment Power is not supplied to power to the Light beam i is blocked been moved or tilted See section 6 Electrical problem atthe Perform SIC in order to Light Source measure signal intensity Bring the Light Source to a technician for service if itis not flashing 52 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Appendix A Wire Selection Tables General Instructions For Electrical Wiring 1 mA output or relay wiring refer to Table 20 to de
45. oated Electrical connection Two options specified at time of order 2 X M25 ISO or 2 X 3 4 14NPT conduits Water and dust tight 66 and IP 67 NEMA 250 type 6p Weight amp Dimensions See Table 15 Table 14 Detector Source Weight amp Dimensions Detector Source t St D type and enclosure application Lb Kg Lb Lb Kg Inch mm Detector for Duct 8 1 3 7 13 4 6 1 5 2x5 2x4 7 132x132x120 Mount 5 Detector for 8 8 4 0 144 6 55 5 2x5 2x9 132x132x230 Standard Mount ff Mount Source reflector 9 5 43 14 9 68 52x52x9 132x132x230 21 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 4 4 Environmental Specifications The SafEye system is designed to withstand harsh environmental conditions The Source and Detector units compensate for adverse conditions while maintaining accuracy High Temperature Designed to meet MIL STD 810C method 501 1 procedure II Operating temperature 158 F 70 C Storage temperature 158 F 70 C Low Temperature Designed to meet MIL STD 810C method 502 1 procedure Operating temperature 4 F 20 C Storage temperature 40 F 40 C Humidity Designed to meet MIL STD 810C method 507 1 procedure IV Relative humidity of up to 95 for the operational temperature range Salt and Fog Designed to meet MIL STD 810C method 509 1 procedure I Exposure to a 5 Salt solution
46. of vibrations 2 Locate the best installation surface for the Detector Light Source The location of the central point of each Duct Hole 3 should be at the same distance from the surface edge This will provide that both Detector and Source optical axis will be in parallel to the Air Duct wall lines such that any blocking in the interior area will be prevented 3 Preparation of the surface Prior to hole drilling it should be verified that the Installation surface is straight clean and free of corrosion Drilling and cutting Mark the Location and dimensions of the Installation Figure 9 show surface drilling dimensions Drill the Duct Hole 3 and the Screw Holes 2 carefully Since the installation is done in a potentially explosive any workmanship in the installation area should be performed under the appropriate rules and regulations 30 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 DIA 6 6 0 2 Description Air Duct Installation Surface Duct Mount Screw Securing Hole Hole for Detector Light Source Figure 9 Drilling Layout Dimensions for Duct Installation 31 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 5 4 Duct Mount Installation Figures 10 11 The following instructions are applicable for both the Light Source unit and the Detector unit 1 Insert the first Internal Plate 1 through the Air Duct Hole Hold it by hand
47. ol methane and the most sensitive gases are various mixtures of Methane with heavier alkanes where the Methane percentage is less than 9096 For pure Ethane the sensitivity is close to the high sensitivity gases and for pure Propane it lies somewhere between the two extremes Every SafEye has 4 built in gas calibration settings that can be changed by function set up The setting for each Safeye is detailed on the calibration datasheet provided with each unit The calibration settings are designed for use in various applications Gas 1 Pure methane and is for use in methane storage and piping applications Gas 2 92 methane 4 propane and 4 ethane default Universal oil and gas production mixture to be used in all cases where methane concentration in the mixture does not exceed 98 It can also be used for pure Ethane applications Gas 3 Pure propane and is good for propane butane detection Gas 4 99 methane and 1 propane and is for use in detecting methane mixture with heavier gases where the methane component can vary between 10096 to 9596 It is also good for protecting areas where a leak can be either pure methane or pure propane The four internal gas calibrations cover most of the flammable gas detection applications Actual selections should be made by the user in consultation with experts to provide for safety requirements However for special cases where Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev
48. or swivel Mounting Bases one for the Detector and one for the Light Source e Telescope Kit e Functional Filter e Magnetic Mode Selector Notes 1 The Magnetic Mode Selector the Calibration Filter and the Telescope Kit are used during each SafEye s installation and then removed They can be reused for all other SafEye installations on the site Therefore only one set is provided for several detectors There are two different Telescope Kits For standard installation P N 794110 For Duct installation P N 794245 There are two different types of Functional Filter One for standard mount and the other for Duct Mount Each type has five different models for different gas reading For standard installation P N 794260 1 to 5 For Duct installation P N 794220 1 t0 5 24 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 5 4 Mounting for Standard Open Path Installation The following instructions are applicable for both the Light Source unit and the Detector unit The detector may be mounted on special Swivel Mounts see 5 4 1 or 1 Tilt Mounts see 5 4 3 ii Duct mounts see5 5 iii Also see appendix D if EExde version used 5 4 1 Swivel Mount Kit Note For Aluminum and St St detector enclosure use Swivel Mount e P N 794765 for inches measure e P N 794765 1 for metric measure The Swivel Mounts models are made of St St 316L Table 15 Swivel Mount Kit Swv
49. ote To change modes place the Magnetic Mode Selector see Figure 15 item 1 on the detector for 2 seconds and wait for the LED indication After mode change allow a time lapse of 5 seconds before changing mode again Standby mode is a temporary mode lasting about 20 seconds used to facilitate Zero Calibration mode selection If the mode selector is not placed during this 20 seconds period the detector will be switched to Normal mode 1 Switch from Normal to Alignment mode See Table 2 for LED status indication 47 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 2 Switch from Alignment to Standby mode The LEDs will flash alternately with a green color 3 Switch from Standby to Calibration mode The LEDs will turn off 4 Wait up to 60 seconds until it switches to Normal mode right LED green The detector reading is now set to normal The 4 20mA output should indicate 4mA 6 7 Functional Check of Unit The SafEye system has been calibrated at the factory for the User s specific gas or vapor detection requirements The following procedure validates the functional operation of the system The Functional Check Filter is a convenient operational check used to confirm that response has not changed from previous readings The filter is not used for calibration which is unnecessary nor does it equate to a particular quantity of gas Automatic activation or any external device that should not be
50. r 4 holes dia 8 5mm 2 Install the Detector Base Assy Item 2 on the Tilt Mount use cap socket screw Item 3 and Spring Washer Item 4 Notes 1 Skip steps 1 and 2 if the Tilt Mount is already installed 2 Detector removal for maintenance purpose does not require Tilt Mount removal 3 Place the detector with its conduit cable inlets pointing downwards on the detector base assy of the Tilt Mount Item 2 Secure the detector with four 1 4 20 UNC 3A x 1 2 screw with No 1 4 spring washers to the Tilt Mount Use 1 4 Hex Key for 3 16 screw 4 Repeat 1 2 to install the Source 5 5 Mounting for Duct Installation The following instructions are applicable for both the Source unit and the Detector unit The detector may be mounted on a special Duct Mount The Duct Mount enables the detector to be rotated up to 3 degrees in the X Y directions in order to provide fine alignment For duct installation use Duct Mount P N 794716 The Duct Mount Kit supplied with the item listed in Table 17 as follows Table 17 Duct Mount Kit EE Duct Mount Set 1 Open amp closed Wrench No 10 key 1 per installation Closed No 10 Key 1 per installation 5 5 1 Duct Mount Set Figure 10 11 The Duct Mount set consists of Fitting Plates Sealing Rings Windowed plate and securing elements combined with appropriate screws and nuts It provides a reliable attachment of the detector to the air intake as well as good sealing and ac
51. r to adapt the detector operation to specific application SW1 Function Selection Switch Contains 8 DIPswitches Used for Calibration of different gas selection response time control and Relays response configuration see table 7 SW2 Adaress Selection Switch Contains 8 DIPswitches Used for Detector s address setting and 4 20mA output configuration setting see table 9 SW3 Alarm Options Selection Switch Contains 4 DIPswitches Used for Detector s Alarm Latching configuration and 4 20mA level reading configuration see table 10 Function Selection Switch Table 7 describes SW1 DIPswitches position and the required function for setting the detector according to the necessary configuration Table 7 SW1 DIPswitches eibi ed setting Not sed 4 4 2 NotUsed 1 of LT Gas type control bit 0 at 0 Gas type control bit 0 at 1 see note 1 below see note 1 below Gas type control bit 1 at 0 type control bit 1 at 1 see note1 below see note 1 below E ps sensitivity is 0 5 Full En sensitivity is 0 2 E m see note 2 below LEL m see note 2 below Zero calibration is Gas level detection performed according to performed without background background Zero calibration Accessory Relay is Accessory Relay is activated activated at Warning level at Alarm level with the Alarm Relay Accessory Relay is Accessory Relay is Activated off activated according to SW1 at Power on continuously 7 posi
52. rce Output Controller Detector Power Supply Relay Loop Figure 19 Typical 4 Wire Controller 56 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 RS 485 Communication Network By using the RS 485 network capability of the SafEye Detector and additional software it is possible to connect up to 32 Detectors in an addressable system with four 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 64 on the same four 4 wires When using the RS 485 network it is possible to read each Detector status FAULT WARNING and ALARM For more details consult the factory First Last Detector Detector Controller Figure 20 RS 485 Networking 57 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 58 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 Appendix Outline Drawing HORIZONTAL ADJUSTMENT SCREW VERTICAL ADJUSTMENT SCREW SOCKET SET SCREW 3 8 240 2 1 2 Figure 21 Detector Outline Drawing With Swivel Mount 59 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 HORIZONTAL ADJUSTMENT SCREW VERTICAL ADJUSTMENT SCREW SOCKET SET SCREW 3 8 24UNF 2Ax1 2 Figure 22 Source Outline Drawing Reflector Type With Swivel Mount 60 Spectrex Inc Saf
53. rdered The terminal block is labeled 1 to 6 See Fig No 25 The following describes the function of each electrical terminal of the detector Alarm amp Fault Relays Version ply pply Terminal Numbers 1 2 Terminal Numbers 1 2 Input power Terminal No 1 Input power Terminal No 1 RETURN Terminal No 2 HEN Terminal No 2 485 as specified appendix y Terminal Numbers 3 4 The Alarm output is a NO SPST Terminal No 3 positive lead contact at Terminal Numbers 3 and 4 Terminal No 4 negative lead The contacts are closed at Alarm y 6 as specified in paragraph 5 e The Fault output is N C SPST contact Terminal No 5 output Terminal at Terminal Numbers 5 and 6 The Terminal No 6 input Terminal contacts are open at Fault condition see appendix B for more details POWER 18 32VDC RETURN R S 485 R 8 485 5 I 4 20ma OUTPUT s 4 20mA INPUT EARTH GROUND 7 Figure 26 OPTION A Figure 27 OPTION B Detector Assembly Wiring Diagram Detector Assembly Wiring Diagram 65 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 For additional details or assistance please contact ZPELTREX INL 218 Little Falls Road Cedar Grove NJ 07009 USA Tel 1 973 239 8398 Fax 1 973 239 7614 Email spectrexQspectrex inc com Web site www spectrex inc com Your Local Authorized Distributor 66
54. re are three fault types Fault 1 2mA Output Non critical If this occurs it is due to blockage poor alignment very low signal or in the case of partial obscuration or full beam block anddetection is no longer possible The Detector s proper operation will be restored Auto reset during operation if the condition causing the problem is removed or resolved This mode will occur after a delay of 60 sec from the moment of the fault This delay is important to eliminate momentary obscuration due to objects people passing through the beam Low Voltage Fault 0mA Output In this case detection is disabled due to low voltage being supplied to the Detector The Detector returns to proper operation only when proper voltage level restored Fault 2 0mA Output Critical In this case the detection is disabled due to electrical software operational failure or central device memory processor fault Such fault causes the Detector to cease operation 3 3 Alignment Mode This mode is used when the received signal needs to be measured i e Installation amp Periodic Maintenance LED indications represent the received signal strength for precise alignment There is a temporary Standby Mode to give the option of switching from Alignment Mode to Calibration Mode 3 4 Zero Calibration Mode 1mA Output This mode zeros the base level from which the Detector will read gas It should only be performed when there are combustible
55. re that be ignited This mixture is different for every gas vapor measured in of LEL LEL m Integral of Concentration in LEL units 1 LEL 100 LEL and the operation distance or path length in meters m 2 3 2 Spectral Finger Print Each hazardous material is detected at a specific wavelength selected according to its specific spectral absorption or finger print There are three IR sensors two signals and one reference The detection process involves two separate filters one transmitting radiation that is absorbed by a particular gas and one that is not sensitive to it 2 3 3 Optical Path The presence of hazardous airborne vapors gases or aerosols in a monitored area is detected when the defined substance crosses enters the optical path between the radiation source unit and the detector Hazardous gases vapors present in the atmosphere cause absorption of the radiation pulse in the optical path between the radiating source and the detector unit at some specific wavelengths This causes a change in the signal intensity received by the detector which is translated into an output related to the detector s measuring scale The system analyzes the defined open path at the spectral bands specific to the materials being monitored The Automatic Gain Control AGC unit compensates for environmental disturbances such as fog rain etc through a constant comparison with its dual spectral beam 2 3 4 Microprocessor Based
56. reci ee HERO caput ara su at source 4 20mA direction 4 20mA output at source eso ur irem jo Alarm Options Selection Switch This switch is used for the following function setting e Selection of the Alarm status to be latched or to auto reset after the Alarm disappears e Selection between two different 4 20mA reading modes continuous analog reading or discrete level reading which appropriate to the detector s status This switch also enables impedance matching to the serial link by providing a connection to a loading resistor through the switch 17 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Table 10 describes SW3 DIPswitches position and the required function for setting the detector according to the necessary configuration Table 10 SW3 DiPswitches Configuration Off position On position Default setting Non latching Alarm Alarm Relay latches Latching reset off Relay can be provided by momentarily power disconnection or when the detector is set to alignment mode Continuous reading Discrete Reading of the 4 20mA output off of the 4 20mA according to the detector status see output reading table 5 Non latching Alarm Alarm indications are latched when the indications during detector turns to Blocking Mode from Blocking Mode Alarm position Latching reset can be provided only if the detector turns to Normal Mode Normal Position Communication line termination for
57. termine the required wire gauge for general wiring Calculate the permitted voltage fall with respect to loads current wire gauge and length of wires 2 Power supply wires refer to Table 21 to select wire gauge DO NOT connect any circuit or load to Detectors supply inputs Table 19 Maximum DC resistance at 68 F for copper wire AWG mm Ohm per 100 ft Ohm 100 meter 0 12 0 15 24 016 024 342 22 0 30 0 38 171 M 20 1051 06 1 Select Number of Detectors connected in one circuit 2 Select wiring length per your installation requirements Refer to power supply range for voltage extreme applied Table 20 Wiring length in feet meter No o Hecommended Wire Diameter Power Supply Detectors Range VDC 24 4 and less Feet 1 eo 328 492 656 820 Meters 100 150 200 250 Detector 53 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 54 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Appendix B Wiring Option configurations 1 Power 18 32VDC oe pa Alignment Strobe N 0 Fault Relay Closed Contact When Detector is Activated Accessory Relay N 0 4 20mA OUT 4 20mA IN 8 485 Figure 17 Detector s Wiring Diagram 55 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D 2004 Detector Controler Figure 18 4 20mA Sou
58. tical surfaces to be performed periodically Note The frequency of cleaning operations is ultimately dependent upon the existing environmental conditions and the applications used 1 Proper maintenance will allow the SafEye system to retain maximum performance and reliability 2 The optical surfaces of the Source and Detector viewing windows should be kept as clean as possible as it is an active device 3 Alignment procedures must be performed each time that the Source or the Detector unit has been opened or moved for any reason 4 The Signal Verification Check corroborates the current signals from the Light Source compared to that of previous alignments It is recommended to perform this check every 6 12 months The signal should be checked according to threshold levels see 7 2 2 5 The functional check should be performed every 6 months see 6 7 6 Zero calibration see 6 6 must be done every time the Detector or Source is realigned or windows cleaned 49 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 7 2 1 Routine Optical Surface Cleaning The SafEye system being an optical device must be kept as clean as possible The optical surfaces concerned are the Source and Detector viewing windows To clean the optical window proceed as follows lig 2 C1 ON Turn off the power to the SafEye detector and source Where dust or dirt has accumulated on the optical surface
59. tion used as End of Line 15 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Notes 1 Four Gas types be selected for maximum compatibility to Gas spectral properties The selection of the appropriate type is defined by pre setting of SW1 3 SW1 4 according to the following table Table 8 Gas Type Calibration Setup bit 4 0 position bit 1 position Detected Gas as type as SW1 3 SW1 4 Type defined in Section 2 3 6 off 2 Model 301 the standard full scale is 2 5 LEL m and 1 LEL m by DIPSwitch Address Selection Switch The Address selection Switch provides up to 64 different addresses for the detector upon network installation Each detector can be recognized at its specific address in RS485 network The address should be determined by a pre setting of SW2 1 to SW2 6 switches SW2 7 SW2 8 should be always at on Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 Table 9 describes SW2 DIPswitches position and the required function for setting the detector according to the necessary configuration Table 9 SW2 DIPswitches Configuration Ne eT postion TNT Setting position setting 1 fAddressbitO LSB 0 T Jof 2 J Addressbitt 0 4 Adress Biz off 4 jAdwesbt3 0 1 5 Address bit 4 I 5 188 6 Address bit 5 MSB bit 5 MSB EE 34 gt g
60. ure 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 4 Connect the wires to the required terminals Item 4 according to the wiring diagram See paragraph 2 1 and figures no 26 and no 27 5 Connect the grounding wire to the ground screw outside the detector cover Item 5 The detector must be well grounded to Earth Groundfor proper operation 6 Verify the wiring Improper wiring may damage the detector 7 Check the wires for secure mechanical connection and press them neatly against the terminal to prevent them from interfering while closing the cover Item 2 8 Place and secure the cover chamber Item 2 using four 4 slotted head screws Item 3 63 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 1 4 20UNC 28 OR 6 1 0 Description Figure 25 Flame Detector Assembly Wiring Diagram 64 Spectrex Inc SafEye 300 Gas Detector Manual TM 794100 Rev D May 2004 2 1 Terminal Wiring Each detector and source unit has a separate EExe terminal box directly attached assembled to it and prewired to the terminal strip in the EExe box Item 4 There are two possible wiring options please follow the wiring scheme below which is appropriate to that o
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