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Summary of Contents for Spectrex SafEye 300 Series
- Page 1 300 Series Open-Path Gas Detection System User Guide Document Ref: TM794200, Rev Ad March 2019 8200 Market Blvd, Chanhassen, MN 55317, USA Phone: +1 (973) 239 8398 Fax: +1 (973) 239 7614 Website: www.spectrex.net Email: spectrex.csc.rmtna@emerson.com...
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Page 3: Legal Notice
Legal Notice The SPECTREX SafEye Open Path Gas Detector described in this document is the property of Rosemount. No part of the hardware, software or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of Rosemount. -
Page 4: Release History
Release History Date Revision History Prepared by Approved by August 2018 First Release Michal Heller Udi Tzuri December 2018 Second Release Michal Heller Udi Tzuri February 2019 Third Release Michal Heller Udi Tzuri March 2019 Fourth Release Michal Heller Udi Tzuri SafEye Open Path Detection System User Guide... -
Page 5: Table Of Contents
Table of Contents Legal Notice ....................iii Warranty ....................iii Release History .................... iv Scope....................11 1.1 Product Overview ................. 11 1.2 Document Overview ................12 Technical Description ................13 2.1 Features ..................... 13 2.2 Applications ..................13 2.3 Principle of Operation ................14 2.3.1 Definitions of Terms ............... - Page 6 3.7.3 RS-485 Interface ................25 3.8 Terminals .................... 26 3.8.1 Detector Terminal ................26 3.8.2 Light Source Terminals ..............28 3.9 System Setup ..................29 3.9.1 Detection Function Programming ............. 29 3.9.2 Detection Setup Function ..............29 3.9.3 Detector Default Setup ..............31 Technical Specifications ..............
- Page 7 5.5.1 Power Supply ................53 5.5.2 Harness Connection ............... 53 5.5.3 Terminal Wiring ................53 Operating Instructions ................ 55 6.1 SafEye Operation ................. 55 6.2 Powering on the System ............... 55 6.3 Safety Precautions ................55 6.4 Zero Calibration ................... 56 6.5 Functional Check of Unit ................
- Page 8 List of Figures Figure 1: P/N Definition for the 300 Series ............. 18 Figure 2: Light Source – Reflector Type ............19 Figure 3: Detector ..................20 Figure 4: Detector Wiring Diagram ..............26 Figure 5: Detector Terminal Board ..............27 Figure 6: Light Source Terminal Board ............
- Page 9 List of Tables Table 1: SafEye 300 IR type Model Information ..........17 Table 2: LED Status Indication..............23 Table 3: Alignment Indication LED Color ............24 Table 4: Standard (Default) 4–20mA Current for the Gas Channel ....25 Table 5: Discrete Reading of 4–20mA at Different Detector Modes ....25 Table 6: Light Source Terminals ..............
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Page 11: Scope
Product Overview Scope 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 11.5ft/3.55m, even in harsh environments where dust, fog, rain, snow, or vibration can cause a high reduction of signal. -
Page 12: Document Overview
Document Overview Document Overview This manual describes the detector and its features and provides instructions on the installation, operation, and maintenance of the detector. This manual is divided into separate chapters as follows: Chapter 1 Scope - a general introduction and overview of the product and the manual, with a brief description of its content. -
Page 13: Technical Description
Applications Technical Description Features • Operating distance from 2ft/0.6m up to 11.5ft/3.5m • Simultaneous detection of C –C flammable gases • High sensitivity and fast response to hydrocarbon gases • Continuous operation in extreme and harsh environmental conditions • Withstands extreme vibration conditions •... -
Page 14: Principle Of Operation
Principle of Operation • LNG-LPG systems • Offshore Floating Production Storage and Shipping vessels (FPSO) and fixed oil rigs 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. -
Page 15: Microprocessor Based
Principle of Operation 2.3.4 Microprocessor Based 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. 2.3.5 Gas Sensitivity The SafEye IR Model uses wavelengths around the 3.4µ... -
Page 16: Gas And Mixture Selection And Setting
Actual selections should be made by the user in consultation with experts to provide for safety requirements. However, for special cases where none of the 4 calibrations are appropriate, SPECTREX, through local agents, can advise on how to calibrate a SafEye detector to any specific gas. -
Page 17: Modbus Rs-485
For more details, refer to Manual TM899050. Product Marking The SafEye 300 Series open path gas detector and source unit are designed to meet: FM per Class I, Div. I, Groups B, C, and D Class II, Div. I, Groups E, F, and G... -
Page 18: Description
Description Figure 1: P/N Definition for the 300 Series Description The system comprises 2 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. SafEye Open Path Detection System User Guide... -
Page 19: Light Source Unit
Description 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- LI0DFAL (Figure 2). Figure 2: Light Source – Reflector Type TM794200 Rev Ad, March 2019... -
Page 20: Detector Unit
Description 2.6.2 Detector Unit The detector’s sensors receive the transmitted pulsed radiation signals from the light source (see Figure 3). 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 a prescribed level, the internal microprocessor will compensate for them. -
Page 21: Operation Mode
Alignment Mode Operation Mode The SafEye system has 3 operation modes: Normal, Alignment, and Zero Calibration. 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. -
Page 22: Zero Calibration Mode (1Ma Output)
Visual Indicator LEDs 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: • No combustible gases present • Clear paths between the light source and detector •... -
Page 23: Table 2: Led Status Indication
Visual Indicator LEDs Table 2: LED Status Indication Status Remarks Left LED Right 4–20mA Status Output Normal Green Warning See Note 4 14mA Alarm See Note 4 19mA Fault 1 Orange Fault 2 Orange Orange Orange Orange Both LEDs Voltage flash at rate of 2Hz Alignment... -
Page 24: Output Signals
Output Signals Table 3: Alignment Indication LED Color Left LED Right LED Gain Orange Orange Green Orange Green Green After 20 minutes at alignment mode the detector will return to normal mode. After zero calibration is finished, the detector will return to normal mode and the signal intensity will be saved for next alignment comparison. -
Page 25: Relays
Output Signals Table 4: Standard (Default) 4–20mA Current for the Gas Channel Current Status and Description 0mA + 0.5mA Fault 2 or low voltage 2mA ± 0.5mA Fault 1 4mA ± 0.5mA Zero reading - no gas detected 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... -
Page 26: Terminals
Terminals Terminals Terminal outputs are described for the detector and the light source. 3.8.1 Detector Terminal Terminal wiring: Figure 4 displays a schematic diagram of the terminals and Figure 5 shows their location. Figure 4: Detector Wiring Diagram SafEye Open Path Detection System User Guide... -
Page 27: Figure 5: Detector Terminal Board
Terminals Description Detector Cover Terminal Board Terminal Screw Securing Cable Figure 5: Detector Terminal Board TM794200 Rev Ad, March 2019... -
Page 28: Light Source Terminals
Terminals 3.8.2 Light Source Terminals Figure 6 shows the terminals board and Table 6 describes their use. Figure 6: Light Source Terminal Board Table 6: Light Source Terminals Light Source Terminal Number Description SafEye Open Path Detection System User Guide... -
Page 29: System Setup
System Setup System Setup 3.9.1 Detection Function Programming The SafEye 300 series incorporates several functions that can be set by the customer using: • Host software: Refer to Manual TM899050 for programming instructions. 3.9.2 Detection Setup Function See Detector Default Setup on page 31 for default settings. -
Page 30: Table 8: Sensitivity Levels Options 301 Sil
System Setup 3.9.2.2 Full Scale Two full scales are available: Table 7: Sensitivity Levels Options 301 SIL Sensitivity Full Scale Warning Level Alarm Level Normal 2.5 LEL*m 1 LEL*m 1.5 LEL*m High 1 LEL*m 0.4 LEL*m 0.6 LEL*m When choosing a full scale, the warning and alarm level will change automatically per the table. -
Page 31: Detector Default Setup
System Setup 3.9.3 Detector Default Setup The detector has 7 functions that can be programmed according to the customer requirement, at the factory or at the customer facility, using a software host or a handheld unit. The standard setup is as follows: Detector Default Setup SafEye 301 Gas type... -
Page 33: Technical Specifications
Electrical Specifications Technical Specifications General Specifications Detected Gases: Simultaneous detection of C –C flammable gases Detection Distance Range: Table 8: Detection Distance Range Model No. Distance (ft) 2–11.5 Distance (m) 0.6–3.5 Response Time Typically, 2 sec., max. 5 sec. Spectral Response: 3.0–4.0 µm Sensitivity Range:... -
Page 34: Electrical Specifications
It enables continuous communication between a single standard Modbus controller (master device) and a serial network of up to 247 detectors. • It enables connection between different types of SPECTREX detectors or other Modbus devices to the same network. SafEye Open Path Detection System User Guide... -
Page 35: Relay Output
Electrical Specifications 4.2.3 Relay Output: The detector may include up to 3 of the following relays depending on the wiring configuration selected. Table 10: Dry Contact Relays Relay Type Normal Maximum Ratings Alarm* SPST N.O. 2A at 30VDC Accessory* SPST N.O. -
Page 36: Mechanical Specifications
Mechanical Specifications Mechanical Specifications Enclosure: The source and detector housings are made of either anodized aluminum with less than 1%mg with an epoxy enamel 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. -
Page 37: Environmental Specifications
Environmental Specifications Table 11: Detector/Source Weight and Dimensions Detector/source Dimensions type and application enclosure Inch Detector for duct 5.2x5.2x4.7 132x132x120 mount Detector for standard 5.2x5.2x9 132x132x230 mount Source for duct mount 5.2x5.2x4.7 132x132x120 Source (reflector) 5.2x5.2x9 132x132x230 Environmental Specifications The SafEye system is designed to withstand harsh environmental conditions. - Page 38 Environmental Specifications Liquids: Protected against immersion between 15cm 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 I.
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Page 39: Installation Instructions
General Considerations 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. Introduction This section does not attempt to cover all of the standard practices and codes of installation. -
Page 40: The Source And Detector
Preparations for Installation 5.2.4 The Source and Detector 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... -
Page 41: Mounting For Duct Installation
Mounting for Duct Installation Mounting for Duct Installation The following instructions are applicable for both the source unit and the detector unit. The detector may be mounted using a specialized duct mount. The duct mount enables the detector to be rotated up to ±3 degrees horizontally and vertically to provide fine alignment. -
Page 42: Duct Installation: Surface Preparation
Mounting for Duct Installation 5.4.3 Duct Installation: Surface Preparation The following instructions are applicable for both the light source unit and the detector unit (see Figure 8): ➢ To prepare the surface: 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. -
Page 43: Figure 7: Drilling Layout Dimensions For Duct Installation
Mounting for Duct Installation Description Air duct installation surface Duct mount screw securing hole Hole for detector/light source Figure 7: Drilling Layout Dimensions for Duct Installation TM794200 Rev Ad, March 2019... -
Page 44: Duct Mount Installation
Mounting for Duct Installation 5.4.4 Duct Mount Installation The following instructions are applicable for both the light source unit and the detector unit. ➢ To install the duct mount (see Figure 8 and Figure 9): Insert the first internal plate (1) through the air duct hole. Hold it by the hand and press the base plate gasket (2) to the installation surface, against the internal plate. -
Page 45: Figure 8: Detector/Light Source And Duct Mount Installation Scheme
Mounting for Duct Installation Description Internal plate Internal vertical alignment nut and flat washer Base plate gasket External alignment nut and flat washer Base plate Horizontal alignment nut and flat washer Base plate securing nut and Detector/light source plate flat washer Window plate Detector/light source Window plate nut and flat... -
Page 46: Figure 9: Duct Mount Installation - Outline Drawing
Mounting for Duct Installation Description Internal plate Internal vertical alignment nut and flat washer External alignment nut and flat Base plate gasket washer Base plate Horizontal alignment nut and flat washer Base plate securing nut and flat Detector/light source plate washer Window plate Detector/light source... -
Page 47: Duct Mount Alignment
Mounting for Duct Installation 5.4.5 Duct Mount Alignment The following instructions are applicable for both the light source unit and the detector unit. ➢ To align the unit (see Figure 9 and Figure 10): Connect the telescope plate (Figure 10, Item 1) to the duct mount alignment plate (Figure 9, Item 8). -
Page 48: Figure 10: Telescope Alignment Set
Mounting for Duct Installation Description Telescope plate Detector/light source securing screw hole Telescope aim Figure 10: Telescope Alignment Set SafEye Open Path Detection System User Guide... -
Page 49: Conduit/Cable Installation
Mounting for Duct Installation 5.4.6 Conduit/Cable Installation • To avoid water condensation in the detector, it should be 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. •... - Page 50 Mounting for Duct Installation Align the 2 connector guide pins in the housing section with the correct openings in the housing section. Carefully slide the housing section onto the floating holes in the female D connector. Using the long handled hex key, tighten the 4M6 1.0Px50 screws (14). Insert the 4 threaded plugs (13).
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Page 51: Figure 11: Detector With Cover (Removed)
Mounting for Duct Installation Description Housing Cover Screw hole Female D connector Terminal board Male D connector Threaded plug Conduit inlet plug Socket head screw (M6x1.0Px50) Ground terminal screw Screw pan head (No. 4-40UNC-2Ax3/8”) Securing cable Cable tie Figure 11: Detector with Cover (removed) TM794200 Rev Ad, March 2019... -
Page 52: Detector Terminal Wiring
Mounting for Duct Installation 5.4.8 Detector Terminal Wiring The detector contains a terminal board consisting of 2 terminal blocks. 5.4.8.1 Power Supply: The input power is supplied to Terminal 1. The return is connected to Terminal 2. Note: Ensure that the detector unit receives a minimum of 18VDC and does not exceed 32VDC. -
Page 53: Light Source Wiring
Light Source Wiring Light Source Wiring 5.5.1 Power Supply Input power is supplied to Terminal 1. The return is connected to Terminal 2 (see Figure 12). Note: Ensure that the light source unit will receive a minimum of 18VDC and does not exceed 32VDC. Pre-wiring requirements and wiring requirements are identical to the appropriate requirements for the detector, as described in Appendix A. -
Page 54: Figure 12: Light Source - Open View
Light Source Wiring Description Housing Grounding wire Cover Securing cable Conduit/cable inlet plugs Screw hole Ground terminal screw Figure 12: Light Source - Open View SafEye Open Path Detection System User Guide... -
Page 55: Operating Instructions
Operating Instructions SafEye Operation Once the system is positioned, it will monitor for possible specified gases, automatically sending signals to a standard control panel or a PC. This chapter describes the alignment, calibration, and operation of the detector. Note: Accurate alignment is essential for proper operation of the SafEye system. -
Page 56: Zero Calibration
Functional Check of Unit 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. Notes: • To change modes, place the magnetic mode selector (see Error! Reference source not found., Item 1) on the detector for 2 seconds and wait for the LED indication. - Page 57 Functional Check of Unit ➢ To perform a functional check of the unit: Position the functional check filter in front of the SafEye detector. The functional check filter window must be centered over the viewing window of the detector. Wait 20 seconds. Read the 4–20mA current.
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Page 59: Maintenance Instructions
Maintenance Instructions 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 a maintenance logbook with a copy of the delivery form inside. -
Page 60: Routine Optical Surface Cleaning
Periodic Maintenance 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: Turn off the power to the SafEye detector and source. Where dust or dirt has accumulated on the optical surface, clean the surface with a small, soft-bristle brush. -
Page 61: Table 15: Led Signal Adjustment
Periodic Maintenance ➢ To check signal intensity: 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 2). Wait 20 seconds, count the number of LED flashes, and note the colors. -
Page 62: Function Check Of Unit
Periodic Maintenance 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 Functional Check of Unit on page 56 for instructions. Caution: Automatic activation, or any external device that should not be activated during the calibration check, should be disconnected. -
Page 63: Troubleshooting
Troubleshooting Problem Cause Solution LEDs are off and fault is Power is not supplied to Supply power to the indicated at 0mA level the detector detector Both LEDs are on at Fault 2 Bring the detector unit for yellow and fault is service indicated at 0mA level Both LEDs are flashing at... -
Page 65: Appendix A: Wire Selection Tables
Appendix A: Wire Selection Tables General Instructions for Electrical Wiring • mA output or relay wiring: Refer to Table 14 to determine the required wire gauge for general wiring and to calculate the permitted voltage fall with respect to loads current, wire gauge, and length of wires. -
Page 66: Table 17: Wiring Length In Feet/Meters
General Instructions for Electrical Wiring Table 15: Wiring Length in Feet/Meters No. of Recommended Wire Diameter Power Supply Detectors Range (VDC) 22–32 22–32 22–32 20–32 20–32 4 and less 20–32 Feet Meters Max. length from power supply to last detector SafEye Open Path Detection System User Guide... -
Page 67: Appendix B: Wiring Option Configurations
Appendix B: Wiring Option Configurations Figure 13: Detector Wiring Diagram TM794200 Rev Ad, March 2019... -
Page 68: Figure 14: 4-20Ma Source Output
Wiring Option Configurations Figure 14: 4–20mA Source Output Figure 15: Typical 4 Wire Controller SafEye Open Path Detection System User Guide... -
Page 69: Rs-485 Communications Network
RS-485 Communications Network RS-485 Communications 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 4 wires only (2 for power and 2 for communication). -
Page 71: Appendix C: Outline Drawings
Appendix C: Outline Drawings TM794200 Rev Ad, March 2019... -
Page 73: Appendix D: Special Conditions To Comply With Sil-2 Requirements
Guidelines for Configuration, Installation, Operation, and Maintenance Appendix D: Special Conditions to Comply with SIL-2 Requirements This appendix details the special conditions to comply with the requirements of EN 61508 for SIL-2. The SafEye 300 can be used in low or high demand mode applications. -
Page 74: Alarm Operation Using The 4-20Ma Signal Current
Special Conditions to Comply with SIL- 2 Requirements A.4.2 Alarm Operation Using the 4–20mA Signal Current • The connected controller has to monitor the 4–20mA signal current for valid values (see Output Signals on page 24). Mode Normal Warning Alarm Continuous current with low 4 mA 7.2 mA... -
Page 80: Technical Support
Technical Support For technical assistance or support, contact: 8200 Market Blvd Chanhassen, MN 55317 Phone: +1 (973) 239 8398 Fax: +1 (973) 239 7614 Email: spectrex.csc.rmtna@emerson.com Website: www.spectrex.net...
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