Spectrex Xenon 700 SIL User Manual

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Xenon 700 SIL

Open-Path Gas Detection System

User's and Maintenance Manual

ATEX, IECEx Approved

Ex II 2(1) G, Ex d e ia [ia Ga] IIC T5 Gb Ta

Document Ref: TM 799200, Rev. C January 2014

218 Little Falls Rd., Cedar Grove, NJ 07009 USA;

Phone: +1 (973) 239 8398 Fax: +1 (973) 239 7614

Web-Site: www.spectrex.net; Email: spectrex@spectrex.net

SafEyeTM Xenon 700S SIL Gas Detector

Legal Notice

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 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.

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 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.

Legal Notice iii

SafEyeTM Xenon 700S SIL Gas Detector

Rev

Date

Revision History

Prepared by

Approved by

June 2011

First Release

Ian Buchanan

Eric Zinn

August 2013

Second Release

Ian Buchanan

Eric Zinn

January 2014

Third Release

Ian Buchanan

Eric Zinn

Release History

iv Release History

About this Guide

This guide describes the SafEyeTM Xenon 700S SIL Gas Detection System and its features and provides instructions on how to install, operate and maintain the detector.

This guide includes the following chapters and appendixes:  Chapter 1, Scope, provides a general introduction and overview of the

product and the guide, with a brief description of its content.

 Chapter 2, Technical Description, describes the Detector’s theory of

operation.

 Chapter 3, Operation Mode, describes the Detector’s operation

modes, user interface and indications.

 Chapter 4, Technical Specifications, describes the Detector’s

electrical, mechanical and environmental specifications.

 Chapter 5, Installation Instructions, describes how to install the

Detector, including wiring and mode settings.

 Chapter 6, Operating Instructions, describes the operating

instructions and power-up procedures.

 Chapter 7, Maintenance Instructions, contains the maintenance and

support procedures.

 Chapter 8, Troubleshooting, describes the solutions to problems that

may arise with the Detector.

 Appendix A, Wiring Selection Tables, describes the electrical wire

selection according to the installation configuration.

 Appendix B, Wiring Option Configurations, provides wiring diagrams

for installation.

 Appendix C, Special Condition to Comply to SIL-2 Requirements,

describes the special conditions in order to comply with SIL-2 requirements.

About this Guide v

SafEyeTM Xenon 700S SIL Gas Detector

Abbreviation

Meaning

ATEX

Atmosphere Explosives

AWG

American Wire Gauge

BIT

Built In Test

EMC

Electromagnetic Compatibility

EOL

End of Line

FOV

Field of View

HART

Highway Addressable Remote Transducercommunication protocol

IAD

Immune at Any Distance

IECEx

International Electrotechnical Commission Explosion

IPA

Isopropyl Alcohol

Infrared

JP5

Jet Fuel

Latching

Refers to relays remaining in the ON state even after the ON condition has been removed

LED

Light Emitting Diode

LPG

Liquefied Petroleum Gas

MilliAmps (0.001 amps)

MODBUS

Master-slave messaging structure

N.C.

Normally Closed

N.O.

Normally Open

N/A

Not Applicable

NFPA

National Fire Protection Association

NPT

National Pipe Thread

SIL

Safety Integrity Level

UNC

Unified Coarse Thread

VAC

Volts Alternating Current

Abbreviations and Acronyms

vi Abbreviations and Acronyms

Table of Contents

Xenon 700 SIL Open-Path Gas Detection System

User's and Maintenance Manual ....................................................................... i

Legal Notice .................................................................................................... iii

Release History ............................................................................................... iv

About this Guide .............................................................................................. v

Abbreviations and Acronyms ............................................................................. vi

1 Scope ......................................................................................................... 1

1.1 Product Overview ................................................................................... 1

2 Technical Description ................................................................................ 3

2.1 Features ............................................................................................... 3

2.2 Applications ........................................................................................... 4

2.3 Principle of Operation ............................................................................. 4

2.3.1 Definitions of Terms ......................................................................... 4

2.3.2 Spectral Finger Print ......................................................................... 5

2.3.3 Optical Path .................................................................................... 5

2.3.4 Microprocessor Based ....................................................................... 5

2.3.5 Gas Sensitivity ................................................................................ 5

2.3.6 Gas and Mixture Selection and Setting ................................................ 6

2.3.7 Flash Source ................................................................................... 6

2.3.8 Heated Optics .................................................................................. 7

2.3.9 HART Protocol ................................................................................. 7

2.3.10 Handheld Unit ................................................................................. 8

2.3.11 Modbus RS-485 ............................................................................... 8

2.3.12 Tilt Mount ....................................................................................... 8

2.4 Product Marking ..................................................................................... 8

2.5 Models and Types .................................................................................. 9

2.6 Description ........................................................................................... 10

2.6.1 Flash Source Unit ............................................................................ 11

2.6.2 Detector Unit .................................................................................. 12

3 Operational Modes ................................................................................... 15

3.1 Operation Modes ................................................................................... 15

3.1.1 Normal Mode .................................................................................. 15

3.1.2 Maintenance Call Mode (3mA Output) ................................................ 15

3.1.3 Fault Mode ..................................................................................... 16

Table of Contents vii

SafEyeTM Xenon 700S SIL Gas Detector

3.1.4 Zero Calibration Mode (1mA Output) ................................................. 16

3.2 Output Signals ...................................................................................... 17

3.2.1 Standard 0-20mA Current Output ..................................................... 17

3.2.2 Dry Contact Relays ......................................................................... 18

3.2.3 RS-485 Interface ............................................................................ 18

3.3 System Set Up ..................................................................................... 18

3.3.1 Detection Function Programming ...................................................... 19

3.3.2 Detection Set-Up Function ............................................................... 19

3.3.3 Default Detector Set up ................................................................... 21

4 Technical Specifications ........................................................................... 23

4.1 General Specifications ........................................................................... 23

4.2 Electrical Specifications .......................................................................... 24

4.2.1 Power Consumption ........................................................................ 24

4.2.2 Electrical Input Protection ................................................................ 24

4.2.3 Electrical Interface .......................................................................... 24

4.2.4 Electrical outputs ............................................................................ 24

4.3 Mechanical Specifications ....................................................................... 26

4.4 Environmental Specifications .................................................................. 26

4.4.1 High Temperature ........................................................................... 26

4.4.2 Low Temperature ............................................................................ 26

4.4.3 Humidity ........................................................................................ 27

4.4.4 Salt and Fog ................................................................................... 27

4.4.5 Water and Dust .............................................................................. 27

4.4.6 Shock and Vibration ........................................................................ 27

4.4.7 Electromagnetic Compatibility (EMC): ................................................ 27

5 Installation Instructions .......................................................................... 29

5.1 Introduction ......................................................................................... 29

5.2 General Considerations .......................................................................... 29

5.2.1 Personnel ....................................................................................... 29

5.2.2 Tools Required................................................................................ 29

5.2.3 Site Requirements .......................................................................... 30

5.2.4 The Source and Detector ................................................................. 30

5.2.5 Guidance Tips for Gas Detector Locations........................................... 30

5.3 Preparations for Installation ................................................................... 30

5.3.1 Preparing for the Installation ............................................................ 31

viii Table of Contents

TM 799200 Rev (C), January 2014

5.4 Certification Instructions ........................................................................ 32

5.5 Conduit/Cable Installation ...................................................................... 33

5.6 Detector/Source Mounting ...................................................................... 33

5.6.1 Tilt Kit P/N 799640.......................................................................... 33

5.6.2 Detector/Source Installation ............................................................. 33

5.7 Detector Wiring .................................................................................... 34

5.8 Detector Terminal Wiring ....................................................................... 38

5.9 Flash Source Wiring............................................................................... 39

5.9.1 Wiring ........................................................................................... 39

5.9.2 Terminal Wiring .............................................................................. 39

6 Operating Instructions ............................................................................ 41

6.1 SafEye Operation .................................................................................. 41

6.2 Alignment of Unit .................................................................................. 41

6.3 Powering up the System ........................................................................ 42

6.4 Safety Precautions ................................................................................ 43

6.5 Signal Verification ................................................................................. 43

6.5.1 Signal Values Limitation ................................................................... 43

6.6 Zero Calibration .................................................................................... 44

6.7 Functional Check of Unit ........................................................................ 45

7 Maintenance Instructions ........................................................................ 47

7.1 General Maintenance ............................................................................. 47

7.2 Periodic Maintenance ............................................................................. 47

7.2.1 Routine Optical Surface Cleaning ...................................................... 48

7.2.2 Signal Verification ........................................................................... 48

7.2.3 Function Check of Unit ..................................................................... 48

8 Troubleshooting ...................................................................................... 49

8.1 Troubleshooting Problems ...................................................................... 49

Appendices .................................................................................................... 51

A Wire Selection Tables .............................................................................. 53

A.1 General Instructions For Electrical Wiring ................................................. 53

B Wiring Option Configurations .................................................................. 55

B.1 RS-485 Communication Network ............................................................. 60

Table of Contents ix

SafEyeTM Xenon 700S SIL Gas Detector

C Special Conditions to Comply to SIL-2 Requirements .............................. 61

C.1 Safety relevant parameters (700S) ......................................................... 61

C.2 Guidelines for Configuration, Installation, Operation and Maintenance ......... 61

C.2.1 Conditions for Safe Operation ........................................................... 61

C.2.2 Alarm Operation using the 0-20mA Signal Current .............................. 62

C.2.3 Relay Outputs ................................................................................ 62

C.3 Miscellaneous ....................................................................................... 62

Technical Support ......................................................................................... 63

x Table of Contents

TM 799200 Rev (C), January 2014

List of Figures

Figure 1: Wiring Options .................................................................................... 10

Figure 2: Flash Source Unit ................................................................................ 11

Figure 3: Detector Unit ...................................................................................... 13

Figure 4: Tilt Mount ........................................................................................... 35

Figure 5: Detector and Tilt Mount Assembly .......................................................... 36

Figure 6: Detector with Cover Removed ............................................................... 37

Figure 7: Source with Cover Removed ................................................................. 40

Figure 8: Magnetic Mode Selector ........................................................................ 44

Figure 9: Wiring Option 1 ................................................................................... 55

Figure 10: Wiring Option 2 ................................................................................. 56

Figure 11: Wiring Option 3 (Default) .................................................................... 57

Figure 12: 0-20mA Wiring (Sink) For Wiring Option 1 and 3 ................................... 58

Figure 13: 0-20mA Wiring (Source) For Wiring Option 1 and 3 ................................ 58

Figure 14: 0-20mA 3 Wire Connection for Option 1 and 3 ....................................... 59

Figure 15: RS-485 Networking for Wiring Option 3 ................................................ 60

List of Figures xi

SafEyeTM Xenon 700S SIL Gas Detector

List of Tables

Table 1: Gas Concentrations Measurement Terms .................................................. 4

Table 2: Gas Calibrations .................................................................................... 6

Table 3: Model Numbers and Installation Distances ................................................ 9

Table 4: Detector Types ..................................................................................... 12

Table 5: Standard (default) 0-20mA Current for the Gas Channel ............................ 17

Table 6: Optional - Discrete Reading of 0-20mA at Different Detector Modes ............ 18

Table 7: Sensitivity Levels Options ...................................................................... 19

Table 8: Other Functions .................................................................................... 20

Table 9: Detector Default Set Up ......................................................................... 21

Table 10: Source Default Set-Up ......................................................................... 21

Table 11: Detection Distance Range .................................................................... 23

Table 12: Detector and Source Maximum Power Consumption ................................ 24

Table 13: Dry Contact Relays.............................................................................. 25

Table 14: Tilt Mount Kit ...................................................................................... 33

Table 15: Tilt Mount Description .......................................................................... 35

Table 16: Detector and Tilt Mount Assembly Description ........................................ 36

Table 17: Detector with Cover Removed Description .............................................. 37

Table 18: Wiring Options .................................................................................... 38

Table 19: Source with Cover Removed Description ................................................ 40

Table 20: Maintenance Channels Limited Values .................................................... 43

Table 21: Troubleshooting Problems .................................................................... 49

Table 22: Maximum DC resistance at 68˚F for copper wire ..................................... 53

Table 23: Wiring length in feet (meter) ................................................................ 54

xii List of Tables

1 Scope

Product Overview

page 1

➣ In this chapter…

1.1 Product Overview

The SafEye ‘Xenon’ IR Open-Path Gas Detector 700S employs an advanced Xenon Flash Source and integrated electronics package, both housed in improved, low-profile stainless steel housings to provide high quality and performance, fast response, line of sight gas monitoring. This high quality is backed by 3 years warranty for the complete SafEye system and 10 years for the Xenon Flash source bulb.

SafEye ‘Xenon’ detects ambient combustible gases over a path length of up

to 459 ft. (140 m), even in harsh environments where dust, fog, rain, snow or vibration can cause a high reduction of signal. Due to its unique combination of triple optics, dual-spectrum reference sensor, and heated optics, the SafEye Xenon can maintain operation in up to 90% signal obscuration and ±1 degree of misalignment.

SafEye Xenon is manufactured only in stainless steel with heated optical window to improve performance in icing, snow, and condensation conditions. The programmable functions are available through a RS-485 port used with Host software supplied by Spectrex and a standard PC or an I.S handheld unit.

The SafEye Source and Detector unit enclosures are ATEX and IECEx certified Exd flameproof with an integral segregated rear, Exe terminal compartment (which avoids exposure of the sensors and electronics to surrounding environment), and an internal Exia intrinsically safe circuit power for the heating of the window. The Detector also has a plug interface for connection to handheld PC, which is intrinsically safe. Hence the combined approval - Ex d e ia [ia Ga] IIC T5 Gb Ta.

This manual consists of a full description of the Detector and its features. It contains instructions on the installation, operation and maintenance.

 To use the Host software with the harness USB RS-485 converter change

the required functions and for maintenance, refer to Manual TM 899050 for instructions

 To use the I.S Handheld Unit to change the required functions and for

maintenance, refer to Manual TM 799060 for instructions.

 To use the non I.S Mini laptop Unit, refer to Manual TM777070 for

instructions.

 To use HART Protocol to change the required functions and for

maintenance refer to Manual TM 899030.

Product Overview 1

SafEyeTM Xenon 700S SIL Gas Detector

2 Product Overview

2 Technical Description

Features

page 3

Applications

page 4

Principle of Operation

page 4

Product Marking

page 8

Models and Types

page 9

Description

page 10

➣ In this chapter…

2.1 Features

 Long Range Gas Detection up to 459ft (140m)  Simultaneous detection of C1-C8 flammable gases  High Sensitivity and fast response to Hydrocarbon gases  Heated optics to improve performance in icing, condensation and snow

conditions

 Continuous operation in extreme and harsh environmental  Conditions  Solar blind and immune to industrial environments  Withstands extreme vibration conditions  Interfaces with most commonly used control panels  Standard 0-20 mA and Dry Contact Relays Outputs  HART Protocol: Communication Protocol (see HART Protocol, p. 6)  RS-485 Output Modbus compatible for PC Communication Network for a

maximum of 247 systems

 Simple one person installation, alignment, and calibration  ATEX & IECEx approved per Ex II 2(1) G, Ex d e ia [ia Ga] IIC T5 Gb Ta

 SIL-2 Approved by TUV per SIL-2 Requirement  Programmable configuration via the handheld unit  Fast connection to I.S. approved handheld diagnostic/calibration unit  New operation mode (3mA) “maintenance call”  Warranty 3 years for the complete SafEye system  Warranty 10 years for Xenon Flash bulb

Features 3

SafEyeTM Xenon 700S SIL Gas Detector

Term

Description

LEL

Lower Explosive Limit: The minimum concentration of a substance (gas/vapor) in air mixture that can 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 in meters (m).

2.2 Applications

The SafEye Xenon system may be used to monitor flammable gas concentration in various applications, such as:

 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  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.

2.3.1 Definitions of Terms

Table 1 defines gas concentrations measurement terms that are used in this manual.

Table 1: Gas Concentrations Measurement Terms

4 Principle of Operation

TM 799200 Rev (C), January 2014

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

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 3.4µ 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 high sensitivity of 0-2 LEL.m according to functions set up. However, since the desired detection information is air flammability and the actual measurement is radiation absorption around the 3.4μ 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.

Principle of Operation 5

SafEyeTM Xenon 700S SIL Gas Detector

Gas Type

Description

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

LPG - 60% Propane and 40% Butane.

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 100% to 95%. It is also good for protecting areas where a leak can be either pure methane or pure propane.

2.3.6 Gas and Mixture Selection and Setting

At the 3.4µ spectral band of the SafEye, the least sensitive gas is pure (100% vol) methane and the most sensitive gases are various mixtures of Methane with heavier alkanes where the Methane percentage is less than 90%. 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. Models 701, 702, 703 are calibrated to 4 different gases as follows:

Table 2: Gas Calibrations

Model 721, 722, 723 are calibrated to one gas only Gas 1 – Ethylene 100%. 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 none of the four calibrations are appropriate, Spectrex, through local agents can advise how to calibrate a SafEye Detector to any specific gas.

2.3.7 Flash Source

The Xenon Flash Source was originally introduced in the first SafEye development and was designed to overcome false alarms, which were experienced by early generations of the open path system. The new SafEye Xenon 700S employs the latest generation of flash bulbs to provide even more power and extended operation life (10 years).

6 Principle of Operation

TM 799200 Rev (C), January 2014

2.3.8 Heated Optics

SafEye Xenon includes heated optics for the Detector and source. The heater increases the temperature of the optical surface by 5-8°F (3-5°C) above the ambient temperature to improve performance in icing, condensation and snow conditions. The heated optics is configured to automatically operate when the change in temperature requires the heating (default).

However, the heated optics can be defined as one of the following modes:

1 Not operated (not an option on source unit) 2 On continuously 3 Automatic, per temperature change (default)

See System Set Up, on page 18. When operated ‘per temperature change’, the user can define the start

temperature below which the window will be heated (default 41°F (5°C)). This temperature can be defined between 32°F (0°C) to 122°F (50°C). The heating will stop when the temperature is 27°F (15°C) above the start temperature.

2.3.9 HART Protocol

The Xenon 700S uses the HART Protocol. HART Communication is a bi-directional industrial field communication

protocol used to communicate between intelligent field instruments and host systems. HART is the global standard for smart instrumentation and the majority of smart field devices installed in plants worldwide are HARTenabled.

HART technology is easy to use and very reliable. Through the HART connection, the SafEye is able to perform:

 Detector set-up  Detector troubleshooting  Detector health and status

For more details, refer to the HART Manual TM 899030.

Principle of Operation 7

SafEyeTM Xenon 700S SIL Gas Detector

2.3.10 Handheld Unit

The new I.S.-approved handheld diagnostics unit (Part no. 799810) is available to make installation and maintenance easier. This is an all-on-one diagnostic / calibration / interrogation plug-in unit that allows for oneperson installation and maintenance.

The handheld unit can be used:

 For on-site function programming and set up changes to the Detector.  During installation, the handheld unit will display all the detector’s

parameters and confirm that the installation has been completed successfully. It is also required to perform the necessary Zero calibration function.

 For Maintenance and Trouble Shooting – The handheld unit will provide

recommendation of maintenance action to overcome and optimize the Detector’s performance.

For more details, refer to Manual TM 799060.

2.3.11 Modbus RS-485

For more advanced communications, the SafEye Xenon has a RS-485 Modbus-compatible output that provides data communication from a network (up to 247 Detectors) to a host computer or universal controller for central monitoring. This feature enables easy maintenance, local and remote diagnostic tools.

2.3.12 Tilt Mount

The new design stainless steel tilt mount provides a smaller installation footprint that can conform to limited space constraints, while the sturdy construction maintains alignment even in constant vibration. The improved ‘X’ and ‘Y’ axis worm-gear adjustments provide quick and easy alignment for installation and maintenance procedures.

2.4 Product Marking

The Xenon 700S open path gas Detector and source unit are certified to:  ATEX Ex II 2(1) G per SIRA 03ATEX1406X

Ex d e ia [ia Ga] IIC T5 Gb Ta = -40°C to +55°C

 IECEx per IECEx SIR 10.0003X

Ex d e ia [ia Ga] IIC T5 Gb Ta = -40°C to +55°C

This product is suitable to use in hazardous zones 1 and 2 with IIC gas group vapors present.

8 Product Marking

TM 799200 Rev (C), January 2014

Model

No.

Detector

Source

Min.

Installation

Distance

Max.

Installation

Distance

701S

XDSS-C-111XX

XSS-C-11X

13 ft. (4 m)

65 ft. (20 m)

702S

XDSS-C-112XX

XSS-C-11X

50 ft. (15 m)

230 ft. (70 m)

703S

XDSS-C-113XX

XSS-C-12X

165 ft. (50 m)

459 ft. (140m)

721S

XDSS-C-121XX

XSS-C-11X

13 ft. (4 m)

65 ft. (20 m)

722S

XDSS-C-122XX

XSS-C-11X

50 ft. (15 m)

230 ft. (70 m)

723S

XDSS-C-123XX

XSS-C-12X

165 ft. (50 m)

459 ft. (140m)

2.5 Models and Types

Series 700S offers 2 families of detected gases:  Models 701S, 702S and 703S used for methane, LPG and gases mixture

for most offshore and onshore applications.  Models 721S, 722S and 723S used for ethylene only. Table 3 describes the installation distances for each of the Series 700S

models.

Table 3: Model Numbers and Installation Distances

The 700S Series has 3 wiring options:

 Option 1: Power, Alarm Relay, Fault Relays, 0-20mA  Option 2: Power, Alarm Relays, Fault Relays, Accessory Relay  Option 3: Power, Alarm Relay, RS-485, 0-20mA, RS-485 RTN (default)

Note: SIL2 covers only 0-20mA outputs. The wiring option must be set at the factory; cannot be changed at

customer facility.

Models and Types 9

SafEyeTM Xenon 700S SIL Gas Detector

Figure 1: Wiring Options

2.6 Description

The SafEye is comprised of two main units:

 Flash Source Unit, page 11  Detector Unit, page 12

Xenon 700S detects gases over an open path transmitted from the Flash Source to the Detector.

10 Description

TM 799200 Rev (C), January 2014

Main Housing

Telescope Site

Junction Box

N/A

Back Cover

Earth Terminal

Cable Inlet

Front Window/Lens Section

Holding Plate

2.6.1 Flash Source Unit

The Flash Source unit emits IR radiation pulses at the rate of two pulses per second. The pulse width (5-10msec) is very powerful. The front of the source SafEye has a coated lens that collimates the IR beam for maximum intensity. The coated lens blocks all the UV and visible lights from passing through the lens and prevents the flash pulse being visible to the eye. The lens is heated to improve performance in icing, condensation and snow conditions.

There are two source types:  Short and Medium Range: For use in models 701S, 702S, 721S, and

722S  Long Range: For use in models 703S and 723S

Description 11

Figure 2: Flash Source Unit

SafEyeTM Xenon 700S SIL Gas Detector

Detector Type

Range

(in ft.)

Range

(in meters)

Short range

13 - 65 ft.

4 – 20 m

Mid-range

50 - 230 ft.

15 – 70 m

Long range

165 - 459 ft.

50 – 140 m

2.6.2 Detector Unit

The Detector receives the transmitted pulsed radiation signals from the Flash 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 a 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 a standard control panel or to a central computer.

The front window of the Detector is heated to improve performance in icing, condensation and snow conditions.

Table 4 describes the detector types and their ranges.

Table 4: Detector Types

12 Description

TM 799200 Rev (C), January 2014

Main Housing

Telescope Site

Junction Box

Handheld Fast Connection

Back Cover

Earth Terminal

Cable Inlet

Front Window/Window Section

Holding Plate

Figure 3: Detector Unit

Description 13

SafEyeTM Xenon 700S SIL Gas Detector

14 Description

3 Operational Modes

Operation Modes

page 15

Output Signals

page 17

System Set Up

page 18

➣ In this chapter…

3.1 Operation Modes

The SafEye 700S has four operational modes:

 Normal Mode, page 15  Maintenance Call Mode (3mA Output), page 15  Fault Mode, page 16  Zero Calibration Mode (1mA Output), page 16

3.1.1 Normal Mode

This mode is used for gas detection. In normal mode, the following statuses are possible:

 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

Note: For the standard 0-20mA output, the Warning and Alarm levels are not relevant. The user chooses these alarm levels at the controller. The output Detector will be 4mA at zero reading and 20mA for full-scale reading.

Warning and Alarm states are relevant where the stepped 0-20mA output is used and will energize the warning and alarm relays.

If the RS485 output is used, the Detector changes its status from ‘N’ to ‘W’ at Warning level and to ‘A’ at Alarm.

3.1.2 Maintenance Call Mode (3mA Output)

This mode indicates low signal or low signal ratio that may be caused by a dirty window; misalignment; poor source or that one of the Detectors parameters is at the ‘limit’ value.

The Detector continues to function and reads any gas present, but provides a (3mA) pre-warning signal that a maintenance procedure is required.

Operation Modes 15

SafEyeTM Xenon 700S SIL Gas Detector

3.1.3 Fault Mode

In the Fault status, there 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 and detection is no longer possible.

The Detector’s proper operation can 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

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.

3.1.4 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:

 No combustible gases present  Clear path between the Flash Source and Detector  Clear weather conditions

Zero calibration must be done after installation, re-alignment and window cleaning, using the handheld unit (or Host software on PC)

16 Operation Modes

TM 799200 Rev (C), January 2014

Current Reading

Status and Description

0mA +0.3mA

Fault 2 or Low Voltage (Critical)

1mA ±0.3mA

Zero Calibration (In Progress)

2mA ±0.3mA

Fault 1 (non-Critical)

3mA ±0.3mA

“Maintenance Call”

4mA±0.5mA

No gas present

0-20mA

Continuous measuring of gas concentration at a range between 0 and full scale

21mA

Concentration is over the range limit (more than full-scale concentration).

3.2 Output Signals

The SafEye system provides the following outputs depending upon the wiring option selected (see Models and Types, page 9):

 Standard 0-20mA Current Output, page 18  Dry Contact Relays, page 18  RS-485 Interface, page 18

3.2.1 Standard 0-20mA Current Output

The 0-20mA output can provide the Detector status measurement in one of the two following methods:

 Default - It can be measured proportionally showing a continuous

reading of the exact gas concentration (see Table 1).  Option - It can be a discrete indication according to the Detector mode

or the warning or alarm signal at a defined gas concentration (see Table

2). Setting of this method can be done by maintenance host or Handheld

unit. The 0-20mA functions as current sink but can be configured as Source – see

Appendix B. The maximum permitted load resistance for the 0-20mA output is 600Ω

Table 5: Standard (default) 0-20mA Current for the Gas Channel

Output Signals 17

SafEyeTM Xenon 700S SIL Gas Detector

Current Reading

Status and Description

LEL.m Setting

0+0.3mA

Fault 2 or Low Voltage

1±0.3mA

Zero Calibration

2±0.3mA

Fault 1 - 3±0.3mA

“Maintenance Call”

4±0.5mA

Standby

14±0.5mA

Warning

19±0.5mA

Alarm

21mA

Concentration is over the range limit (more than full-scale concentration).

Table 6: Optional - Discrete Reading of 0-20mA at Different Detector Modes

3.2.2 Dry Contact Relays

The detector may include up to three of the following relays depending on the wiring configuration:

 Fault relay  Alarm relay  Accessory relay

Alarm and Accessory relays are normally non-energized open. When in the alarm or warning status the appropriate relay is closed.

Fault relay is normally energized closed, and when it is in the fault condition the relay is opened.

3.2.3 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 protocol is Modbus compatible. The communication with the PC that is operated through the interface is executed only when used with appropriate host software.

3.3 System Set Up

This section includes the following options:

 Detection Function Programming, page 19  Detection Set-Up Function, page 19

18 System Set Up

TM 799200 Rev (C), January 2014

Sensitivity

Full Scale

Warning Level

Alarm Level

Normal

5 LEL.m

1 LEL.m

3 LEL.m

High

2 LEL.m

0.4 LEL.m

1 LEL.m

3.3.1 Detection Function Programming

The SafEye 700S series incorporates several functions that can be set by the customer using:

 Handheld unit (P/N 799810). Refer to manual TM 799060 for

programming instructions. The connection of the handheld to the

detector is fast and intrinsically safe and allows function change with no

need to open the detector.  To use the non I.S mini laptop Unit, refer to Manual TM 777070 for

instructions.  Host software with harness USB RS-485 converter, refer to manual

TM 899050 for programming instructions.

3.3.2 Detection Set-Up Function

For the default settings see Default Detector Set up, page 21

3.3.2.1 Gas Calibration

Four gas types can be selected for maximum compatibility to the required measured gas(es).

Gas Types for Models 701S, 702S, 703S:

 Methane  Mixture 92% methane 4% ethane 4% propane (default)  LPG – 60% Propane, 40% Butane  Mixture 99% methane 1% propane

Gas Type for Models 721S, 722S, 723S:  Ethylene 100% These four calibrations are standard calibrations. The Detector can be

calibrated up to eight (8) different types of gases or mixtures upon special request.

Each Detector will be supplied with a calibration sheet that will define the calibrated gas set up, full-scale, alarm and warning level.

3.3.2.2 Full Scale

Two full scales are available:

Table 7: Sensitivity Levels Options

When choosing a full scale, the warning and alarm level will change automatically per the table.

System Set Up 19

SafEyeTM Xenon 700S SIL Gas Detector

Function

Accessory Relay

Accessory Relay is activated at warning level

Accessory Relay is activated at alarm level

Alarm Latching

No latching function at alarm relay

Alarm relay is latched. Latching reset can be performed by momentary power disconnection or when Detectors are set to alignment mode

4-20 mA mode

Continue reading of the 0-20mA per the gas concentration level (see Table 1)

Discrete reading of the 0-20mA output according to the Detector status (see Table 2)

Beam Block During Alarm

Non latching of alarm indication during blocking mode

Alarm outputs are latched when the Detector turns to blocking mode from alarm position. Latching reset can be provided only if the Detector turn to normal mode

3.3.2.3 Zero Calibration

Zero Calibration can be enabled or disabled as follows:

 Enable – Zero calibration is performed according to background  Disable – The Detectors are not updated due to change of background

3.3.2.4 Other Functions

Table 8: Other Functions

3.3.2.5 Address Setup

The Detector provides up to 247 addresses that can be used in RS-485 communication link.

3.3.2.6 Heated Optic Operation

The heated optics for the Detector unit can be defined as one of the following modes:

 OFF – Not operated  ON – Operated continuously  AUTO – On, per temperature change (default)

When operated per temperature change, the user can define the start temperature below which the window will be heated between 0 to 50°C. The Detector will stop heating the window when the temperature will be 15°C above the defined temperature.

This feature relates to the Detector only.

20 System Set Up

TM 799200 Rev (C), January 2014

Function

Setting

Gas Type

Full scale sensitivity

5 LEL.m

BG Zero Calibration

Enabled

Accessory Relay

Warning*

Alarm Latching

0-20mA

Continuous**

Beam block during alarm

No latch

Heat mode

Auto

Heat on

Function

Setting

Heat mode

Auto

Heat on

The Source heated optic must be defined with the order in two options:

 Heated continuously  Start heating below 41°F (5°C). (default)

3.3.3 Default Detector Set up

The Detector has 8 functions that can be programmed according to the customer requirement at factory or at customer facility using a software Host or a handheld unit. The standard set up is as follows:

Table 9: Detector Default Set Up

* Only refers to wiring option with Accessory relay output ** Only refer to the wiring options with 0-20mA

Table 10: Source Default Set-Up

The Source default can be changed only at the factory.

System Set Up 21

SafEyeTM Xenon 700S SIL Gas Detector

22 System Set Up

4 Technical Specifications

General Specifications

page 23

Electrical Specifications

page 24

Mechanical Specifications

page 26

Environmental Specifications

page 26

Detected Gases:

Simultaneous detection of C1-C8 flammable gases

Detection Distance range:

Table 11

Model

No.

Detector

Source

Min.

Installation

Distance

Max.

Installation

Distance

701S

XDSS-C-111XX

XSS-C-11X

13 ft. (4 m)

65 ft. (20 m)

702S

XDSS-C-112XX

XSS-C-11X

50 ft. (15 m)

230 ft. (70 m)

703S

XDSS-C-113XX

XSS-C-12X

165 ft. (50 m)

459 ft. (140m)

721S

XDSS-C-121XX

XSS-C-11X

13 ft. (4 m)

65 ft. (20 m)

722S

XDSS-C-122XX

XSS-C-11X

50 ft. (15 m)

230 ft. (70 m)

723S

XDSS-C-123XX

XSS-C-12X

165 ft. (50 m)

459 ft. (140m)

Response Time:

23 sec to T 90

Spectral Response:

3.0 - 4.0 micron

Sensitivity Range:

0-5 LEL.m

0-2 LEL.m

Field of View:

Line of Sight

Alignment Tolerance:

± 1°

Drift:

Long term ± 5% of full scale

Temperature Range:

-40°F (-40°C) to +131°F (+55°C)

Immunity to false alarm:

Does not produce false alarm and is not influenced by Solar Radiation, Hydrocarbon Flames and other external IR Radiation Sources.

➣ In this chapter…

4.1 General Specifications

Table 11: Detection Distance Range

General Specifications 23

SafEyeTM Xenon 700S SIL Gas Detector

Operating Voltage:

18-32 VDC

Without Heated Optic (Max.)

With Heated Optic (Max.)

Detector

220mA

300mA

Source

220mA

300mA

4.2 Electrical Specifications

4.2.1 Power Consumption

Table 12: Detector and Source Maximum Power Consumption

4.2.2 Electrical Input Protection

The input circuit is protected against voltage-reversed polarity, voltage transients, surges and spikes according to MIL-STD-1275B.

4.2.3 Electrical Interface

There are three output-wiring options. These options must be defined at factory per the customer order. See Appendix B for wiring/terminal diagram for each option.

Note: Option 3 is the default unless otherwise specified at time of order.

 Option 1:Power, Alarm Fault Relay, 0-20mA (Figure 9).  Option 2:Power, Alarm, Fault & Accessory Relay(Figure 10)  Option 3: Power, Alarm Relay, RS 485, 0-20mA, RS-485 RTN (Figure 11)

Note: SIL2 covers only 0-20mA outputs.

4.2.4 Electrical outputs

4.2.4.1 0-20mA Current Output

The 0-20mA is isolated sink option. This output can be configured as Source – see Appendix B.

The maximum permitted load resistance is 600 ohm. Two 0-20mA options:

 Continuous reading – default (see Table 2)  Discrete reading (see Table 3)

4.2.4.2 Communication Network

The Detector is equipped with an RS-485 communication link that can be used in installations with computerized controllers.

24 Electrical Specifications

Communication is compatible with the Modbus protocol:  This protocol is a standard and is widely used.

TM 799200 Rev (C), January 2014

Relay

Type

Normal

Maximum Ratings

Alarm

SPST

5A at 30VDC

Accessory

SPST

5A at 30VDC

Fault

SPST

5A at 30VDC

 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.

4.2.4.3 Relays Output

The Detector may include up to three of the following relays depending on the wiring configuration selected.

Table 13: Dry Contact Relays

Alarm and accessory relays are normally de-energized open. When in the alarm or warning status the appropriate relay is closed.

Fault Relay is normally energized closed, the contact will be closed, and when it is in Fault situation, the relay is opened.

4.2.4.4 HART Protocol

The HART Protocol is a digital communication signal at low level on top of the 0-20mA.

This is a bi-directional field communications protocol used to communicate between intelligent field instruments and the Host System.

Through the HART Protocol the detector can:

 Display set-up  Reconfigure set-up  Display detector status and definition  Perform detector diagnostic  Troubleshooting

Electrical Specifications 25

SafEyeTM Xenon 700S SIL Gas Detector

Enclosure:

The Detector, Source and tilt mount are St. St. 316 Electro chemical and passivized coating.

Explosion Proof:

ATEX

Ex II 2(1) G, Ex d e ia [ia Ga] IIC T5 Gb Ta

Temp -40°F (-40°C) to 131°F (55°C)

IECEx

Ex II 2(1) G, Ex d e ia [ia Ga] IIC T5 Gb Ta

Temp -40°F (-40°C) to 131°F (55°C)

Water and Dust Tight:

IP 66 and IP 67

NEMA 250 type 6p

Electrical Modules:

Conformal coated

Electrical Connection:

(Two options - specified at time of order)

2 X M25 (ISO)

2 X 3/4” - 14NPT conduits

Dimensions:

Detector

8.2 x 5.7 x 6 in

(210 x 145 x 154mm)

Source

10 x 5.3 x 6.9 in

(255 x 135 x 175mm)

Tilt Mount

4.7 x 4.7 x 5.5 in

(120 x 120 x 140mm)

Weight:

Detector

9.2 lb.

(4.2 kg)

Source

10.1 lb.

(4.6 kg)

Tilt Mount

4.2 lb.

(1.9 kg)

Operating Temperature:

+131 ºF (+55 ºC)

Storage Temperature:

+149 ºF (+65 ºC)

Operating Temperature:

-4 ºF (-20 ºC)

Storage Temperature:

-40 ºF (-40 ºC)

4.3 Mechanical Specifications

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.

4.4.1 High Temperature

Designed to meet MIL-STD-810C, method 501.1 procedure II

4.4.2 Low Temperature

Designed to meet MIL-STD-810C, method 502.1, procedure I

26 Environmental Specifications

TM 799200 Rev (C), January 2014

Dust:

Totally protected against dust

Liquids:

Protected against immersion between 15 cm and 1m in depth. Protected against all water jets from all directions.

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.

Radiated Emission:

EN61000-6-3

Conducted Emission:

EN61000-6-3

Radiated Immunity:

EN61000-4-3

Conducted Immunity:

EN61000-4-6

ESD:

EN61000-4-2

Burst:

EN61000-4-4

Surge:

EN61000-4-5

4.4.3 Humidity

Designed to meet MIL-STD-810C, method 507.1, procedure IV relative humidity of up to 95% for the operational temperature range.

4.4.4 Salt and Fog

Designed to meet MIL-STD-810C, method 509.1 procedure I. Exposure to a 5% salt solution for 48 hours.

4.4.5 Water and Dust

 IP67 per EN60529  IP66 per EN60529

4.4.6 Shock and Vibration

4.4.7 Electromagnetic Compatibility (EMC):

This product is in conformance with EMC directive 89/336/EC.

Environmental Specifications 27

SafEyeTM Xenon 700S SIL Gas Detector

28 Environmental Specifications

5 Installation Instructions

Introduction

page 29

General Considerations

page 29

Preparations for Installation

page 30

Certification Instructions

page 32

Conduit/Cable Installation

page 33

Detector/Source Mounting

page 33

Detector Wiring

page 34

Detector Terminal Wiring

page 38

Flash Source Wiring

page 39

➣ In this chapter…

5.1 Introduction

The Detector and Flash 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.

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 and 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)  Voltage Multimeter

General Considerations 29

SafEyeTM Xenon 700S SIL Gas Detector

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, 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%.

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:

 Below potential leak source for heavier than air gases  Above potential leak sources for lighter than air gases  Near to leak sources along the expected leak trajectory, taking into

account prevailing wind directions

 Between leak source and potential ignition sources  In 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

Installation should comply with local, national and international regulations and norms as applicable to gas Detectors and approved electrical devices installed in hazardous areas. The Detectors can be installed with generalpurpose common tools and equipment.

The System should include the following (in addition to this manual):

 Detector unit: XDSS-C-11XXX (See Models and Types on page 9)  Source unit: XSS-C-XX (See Models and Types on page 9)

30 Preparations for Installation

TM 799200 Rev (C), January 2014

 Two Tilt Mount Bases P/N 799640

 1 base is used for the Detector

 1 base is used for the Flash Source.  The Commissioning kit includes Function Check Filter and the Telescope

Kit, which is used during each SafEye 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.

 Telescope Kit P/N 799210  Function Check Filter P/N 792260 (1-5)*  Handheld Unit P/N 799810

* There are 5 options depending on full scale and type of calibrated gas.

5.3.1 Preparing for the Installation

The following procedure is used for preparing the installation of the 700S Gas Detector:

1 Verify the appropriate Purchase Order. Record the Part No. and the

Serial No. of the detectors and source units and the installation date in

the appropriate log book.

2 Open the container package immediately prior to detector installation

and visually inspect the detectors; sources and accessories.

3 Verify that all components required for the detector installation are

readily available before commencing the installation. In the event that

the installation is not completed in a single session, secure and seal

detectors and conduits.

4 For wiring, use color-coded conductors or suitable wire markings or

labels. 12 to 20 AWG (0.5 mm² to 3.5 mm²) wires may be used for site

wiring. The selection of wire gauge should be based on the number of

detectors used on the same loop and the distance from the control unit,

in compliance with specifications (See Appendix A, page 53)

Preparations for Installation 31

SafEyeTM Xenon 700S SIL Gas Detector

Warning: Do not open the detector, even when isolated, when flammable atmosphere is present.

5.4 Certification Instructions

Use the following certification instructions:  The cable entry point may exceed 158°F (70°C) suitable precautions

should be taken when selecting the cable.  The equipment may be used with flammable gases and vapors with

apparatus groups IIA, IIB and IIC T5 in the ambient temperature

range -40°F (-40°C) to +131°F (+55°C).  Installation shall be carried out by suitably trained personnel in

accordance with the applicable code of practice e.g. EN 60079-14:1997.  Inspection and maintenance of this equipment shall be carried out by

suitably trained personnel in accordance with the applicable code of

practice e.g. EN 60079-17.  Repair of this equipment shall be carried out by suitably trained

personnel in accordance with the applicable code of practice

e.g. EN 60079-19.  The certification of this equipment relies upon the following materials

used in its construction:

 Enclosure: 316L Stainless Steel

 Window: Sapphire Glass

 Window Cement: Ciba Geigy epoxy putty AV 138M & HV 998

 Seals: Buna-n  If the equipment is likely to come into contact with aggressive

substances, then it is the responsibility of the user to take suitable

precautions that prevent it from being adversely affected, thus ensuring

that the type of protection provided by the equipment is not

compromised.

 Aggressive substances: For example. acidic liquids or gases that may

attack metals, or solvents that may affect polymeric materials.

 Suitable precautions: For example, regular checks as part of routine

inspections or establishing from the material’s data sheets that it is resistant to specific chemicals.

 Special conditions for safe use: The series 700S Open Path Gas

Detectors and Flash Source units shall not be used as safety related

devices in accordance with directive 94/9/EC.

32 Certification Instructions

TM 799200 Rev (C), January 2014

Item

Qty

Type/Model

Tilt Mount

799220

Screw

5/16” – 18 UNC x 3/4”

Spring Washer

No. 5/16”

5.5 Conduit/Cable Installation

The conduit and cable installation must comply with the following guidelines:

1 To avoid water condensation in the detector, install the Detector with the

conduits/cable entries facing downwards

2 Use flexible conduits/cables for the last portion connecting to the

detector

3 When pulling the cables through the conduits, ensure that they are not

tangled or stressed. Extend the cables about 12 inches (30cm) beyond

the Detector location to accommodate wiring after installation.

4 After the conductor cables have been pulled through the conduits,

perform a continuity test

5.6 Detector/Source Mounting

The Detector Source should be mounted with the Tilt Mount Kit, Model

799640. The Tilt enables the Detector to be rotated up to 45º in all directions and fine alignment of up to 3º.

5.6.1 Tilt Kit P/N 799640

The following contents are included with the Tilt Mount Kit:

Table 14: Tilt Mount Kit

5.6.2 Detector/Source Installation

(Figure 4 and Figure 5)

➣ To install the Detector/Source:

1 Place the Tilt Mount holding plate (item 1) in its designated location and

secure it with (4) fasteners through four (4) holes dia. 8.5mm.

Notes:

1. Skip this step if the Tilt Mount is already installed.

2. Detector removal for maintenance purpose does not require Tilt Mount

removal.

2 Place the Detector, with its conduit/cable inlets pointing downwards on

the Detector holding plate of the Tilt Mount (item 2). Secure the

Detector with 5/16”-18UNC x 3/4" screw with No. 5/16” spring washers

(9,10) to the Tilt Mount. Use ¼” Hex Key for 5/16” screw (item 9).

Conduit/Cable Installation 33

3 Repeat 1 – 2 to install the Source.

SafEyeTM Xenon 700S SIL Gas Detector

5.7 Detector Wiring

(Figure 5 and Figure 6)

➣ To install the Detector wiring:

1 Remove the four (4) socket-head-screws (item 14, Figure 5) that secure

the Detector back cover (item 15, fig. 4). The chamber is now revealed.

2 Remove the protective plug mounted on the Detector conduit/cable

entry inlet; pull the wires through the Detector inlet (item 4, Figure 6).

Use a 3/4” – 14NPT or M25x1.5 explosion-proof conduit connection /

cable gland to assemble the cable / explosion-proof conduit to the

Detector.

3 Connect the wires to the required terminals (item 2, Figure 6) according

to the wiring diagram. See Detector Terminal Wiring, page 38 and

Figure 9, Figure 10,Figure 11 Appendix B.

4 Connect the grounding wire to the ground screw outside Detector

(item 3. Figure 6). The Detector must be well grounded to Earth Ground.

5 Check the wires for secure mechanical connection and press them neatly

against the terminal to prevent them from interfering while closing the

cover (item 15, Figure 5)

6 Place and secure the Detector back cover using four (4) socket-head-

screws (item 14, Figure 5)

34 Detector Wiring

TM 799200 Rev (C), January 2014

Tilt Mount Holding Plate

Vertical Fine Alignment Tightening Screw

Detector/Source Holding Plate

Vertical Crude Alignment Tightening Screw

Horizontal Crude Alignment Tightening Screw

Vertical Fine Alignment Screw

Horizontal Fine Alignment Tightening Screw

Horizontal Fine Alignment Screw

Figure 4: Tilt Mount

Table 15: Tilt Mount Description

Detector Wiring 35

SafEyeTM Xenon 700S SIL Gas Detector

Tilt Mount Holding Plate

Detector Tightening Screw

Detector/Source Holding Plate

Detector Tightening Washer

Horizontal Crude Alignment Tightening Screw

Detector

Horizontal Fine Alignment Tightening Screw

Telescope

Vertical Fine Alignment Tightening Screw

Telescope Tightening Bolt

Vertical Crude Alignment Tightening Screw

Back Cover Tightening Bolt

Vertical Fine Alignment Screw

Detector Back Cover

Horizontal Fine Alignment Screw

Figure 5: Detector and Tilt Mount Assembly

Table 16: Detector and Tilt Mount Assembly Description

36 Detector Wiring

TM 799200 Rev (C), January 2014

Housing

Internal Earth Connection

Terminal Board

Connection to Handheld Unit

Earth Terminal

Detector Holding Plate

Inlet Conduit

Detector Telescope Site

Detector Wiring 37

Figure 6: Detector with Cover Removed

Table 17: Detector with Cover Removed Description

SafEyeTM Xenon 700S SIL Gas Detector

Wiring

Option

Terminal Number

1 2 3 4 5 6 7 8 9

Figure

(Default)

24Vdc

0Vdc

Alarm Relay

(1)

RS-485+

(3)

RS-485-

(3)

0-20mA +

(4)

0-20mA -

(4)

RS-485

RTN

(6)

Figure

24Vdc

0Vdc

Alarm Relay

(1)

Fault Relay

(2)

Accessory Relay

(5)

not used

Figure 9

24Vdc

0Vdc

Alarm Relay

(1)

Fault Relay

(2)

0-20mA +

(4)

0-20mA -

(4)

not used

5.8 Detector Terminal Wiring

The Detector has three output wiring options in the rear, segregated, “Exde“

terminal section, with 9 Terminals, labeled 1-9.

Option 3 is the default unless otherwise specified at time of order

The following describes the function of each electrical terminal of the Detectors for all wiring options:

Table 18: Wiring Options

Notes:

1 The Alarm output is a N.O. contact relay (SPST).

The contacts are closed in Gas Alarm state.

2 The Fault output is N.C. SPST relay. The contacts are closed when the

Detector is in its normal operational condition.

3 Used for communication network as specified in Appendix B. 4 See Appendix B for more details 5 The Accessory output is N.O. (SPST) relay. The Accessory Relay may act

in parallel with the ALARM relay to activate another external device or it

may provide a warning signal, depending on Function Set Up.

6 Used as RTN to the RS-485 communication port.

38 Detector Terminal Wiring

TM 799200 Rev (C), January 2014

5.9 Flash Source Wiring

5.9.1 Wiring

➣ To install the wiring:

1 Remove the four (4) socket-head-screws (item 14, Figure 5) that secure

the Source back cover (item 15, Figure 5). The chamber is now open.

2 Remove the protective plug mounted on the source conduit/cable entry

inlet; pull the wires through the source inlet (item 4, Figure 7). Use a

3/4” – 14NPT or M25x1.5 explosion-proof conduit connection / cable

gland to assemble the cable / explosion-proof conduit to the source.

3 Connect the wires to the required terminals (item 2, Figure 7) (See

Terminal Wiring, page 39)

4 Connect the ground wire to the ground screw outside the source (item 3,

Figure 7). The source must be well grounded to earth ground.

5 Check wires for secure mechanical connection and press them neatly

against the terminal to prevent them from interfering while closing the

cover (item 15, Figure 5)

6 Place and secure the source back cover using four (4) socket-head-

screws (item 14, Figure 5)

5.9.2 Terminal Wiring

The Flash Source contains a three-wire strip terminal:

 Terminal 1 – positive (+) power supply  Terminal 2 – common return  Terminal 3 – GND (ground)

Flash Source Wiring 39

SafEyeTM Xenon 700S SIL Gas Detector

Housing

Internal Earth Connection

Terminal Board

N/A

Earth Terminal

Detector Holding Plate

Inlet Conduit

Detector Telescope Site

40 Flash Source Wiring

Figure 7: Source with Cover Removed

Table 19: Source with Cover Removed Description

6 Operating Instructions

SafEye Operation

page 41

Alignment of Unit

page 41

Powering up the System

page 42

Safety Precautions

page 43

Signal Verification

page 43

Zero Calibration

page 44

Functional Check of Unit

page 45

➣ In this chapter…

6.1 SafEye Operation

After the system is positioned, it will monitor for possible specified gases automatically sending signals to a standard control panel or to a PC. This section describes the alignment, calibration and operation.

Important! Accurate Alignment is essential for proper operation of the SafEye system.

6.2 Alignment of Unit

Using the Telescope performs full alignment. Alignment procedure should be performed in two stages: Crude alignment

and 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 into the opposite unit perpendicularly 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 Screw.

Important Notes

1 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.

2 Do not attempt to change any factory calibration at the Telescope or its

mounting. This may prevent optimal alignment.

➣ To align the unit (see Figure 10):

1 Make sure that the Detector and the Flash Source are installed properly.

Installation instructions are described in section 5 of this document.

Alignment of Unit 41

SafEyeTM Xenon 700S SIL Gas Detector

2 Install the Telescope Assembly (12) on the Telescope Site Mounting of

the Source according to the drawing. Fasten the Telescope with

Fastening Screw (13).

3 Crude Alignment:

a. Use ¼” Allen screw driver for all alignment screws.

b. Loosen screws 5, 6.

c. Approximately aim the source horizontally toward the detector.

d. Tighten screw 6.

e. Loosen screws 3 and 4.

f. Approximately aim the source vertically toward the detector.

g. Tighten screw 3.

4 Repeat step 3 for the Detector. 5 Fine Alignment:

a. Aim the Source to the Detector within horizontal axis using screws 7.

Aim the cross to the upper level of the telescope site or the Detector.

b. Tighten screw 5.

c. Aim within the vertical axis using screw 8.

d. Tighten screw 4.

e. Make sure the telescope cross is pointing at the top of the telescope

site of the Detector.

6 Repeat step 5 for the Detector alignment.

6.3 Powering up the System

Important! Prior to any operation or maintenance, follow the Safety Precautions in Safety Precautions, page 43 .

➣ To power up the system:

1 Make sure that the Source and Detector are connected to power. 2 Make sure that the 0-20mA meter is connected to the Detector. 3 Power up the system 18-32VDC. 4 After 60 seconds, the current meter will indicate 4mA.

Note: Zero calibration should be performed after powering up the system

(see Zero Calibration, page 44).

42 Powering up the System

TM 799200 Rev (C), January 2014

Channel

Installation Distance

Maintenance

Min

Med

Max

Reference

1V Gain1

1V Gain2

1V Gain3

The minimum signal allowed is 2.5V at Gain4

Signal 1

1V Gain1

1V Gain2

1V Gain3

The minimum signal allowed is 2.5V at Gain4

Signal 2

1V Gain1

1V Gain2

1V Gain3

The minimum signal allowed is 2.5V at Gain4

Ratio 1

0.6-2

0.5-3

Ratio 2

0.6-2

0.5-3

NQRat 1

0.95 – 1.05

Must be 0.95 – 1.05

NQRat 2

0.95 – 1.05

Must be 0.95 – 1.05

LEL

0 LEL x m

Temp.

Up to 25° C beyond room temp.

Voltage

32VDC > V > 17VDC

Ref/Noise

More than 80

More than 30

Sig 1/Noise

More than 80

More than 30

Sig 2/Noise

More than 80

More than 30

6.4 Safety Precautions

After powering up the system, the Detector requires minimal attention in order to function properly, but the following should be noted:

1 Follow the instructions in the Manual; refer to the drawings and

specifications issued by the manufacturer.

2 Do not open the detector/source housing while power is supplied. 3 Disconnect external devices, such as automatic extinguishing systems

before carrying out any maintenance task warranty.

6.5 Signal Verification

The signal verification can be done through Host software supplied by Spectrex (see Detection Function Programming, page 19).

6.5.1 Signal Values Limitation

Table 20 describes the maintenance data channels limitation values.

Table 20: Maintenance Channels Limited Values

Note: The installation information refers to the installation distance.

Safety Precautions 43

 Min: The minimum distance as defined on the model no.  Med: Half of the maximum distance as defined on the model no.  Max: The maximum distance as defined on the model no.

SafEyeTM Xenon 700S SIL Gas Detector

6.6 Zero Calibration

Zero calibration must be done after:

 Installation  Realignment  Window Cleaning  Any change in Detector or Source position

Precise alignment must be performed prior to the zero calibration procedure. Zero calibration should be performed in good weather conditions with insignificant gas concentrations in the surrounding environment or indoors.

➣ To perform the zero calibration procedure:

1 Switch from Normal to Alignment mode indication. 2 Switch from Alignment to Standby mode. 3 Switch from Standby to Zero Calibration mode.

The 0-20mA output should now be at 1mA.

4 Wait up to 60 seconds until it switches to Normal mode. The Detector

reading is now set to normal. The 0-20mA output should now indicate

4mA.

Switching from each position (above first three instructions) can be done

by HOST HART (refer to TM888030) or RS485 (refer to TM888050 or

TM799060), or by moving the magnetic mode selector above the

magnetic switch (see Figure 8).

Figure 8: Magnetic Mode Selector

44 Zero Calibration

TM 799200 Rev (C), January 2014

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.

Caution: Automatic activation or any external device that should not be activated during the calibration check should be disconnected.

Notes:

1 This functional verification procedure is for a standard 0-20mA output. 2 Prior to starting the functional check, verify that the power to the units is

on and that the current of the 0-20mA channel is stable. Record the

reading.

➣ To perform the functional check:

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 Read the 0-20mA current. Determine the difference between the reading

taken with and without the Functional Check Filter. This difference is the

0-20mA current variance.

5 Record the 0-20mA current variance in the Maintenance Logbook. If the

variance is more than a 30% change when compared to the previous

check (see delivery form), repeat the alignment.

Functional Check of Unit 45

SafEyeTM Xenon 700S SIL Gas Detector

46 Functional Check of Unit

7 Maintenance Instructions

General Maintenance

page 47

Periodic Maintenance

page 47

➣ In this chapter…

7.1 General Maintenance

The SafEye Xenon 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 a copy of the delivery form inside.

7.2 Periodic Maintenance

Recommended cleaning of optical surfaces to be performed periodically. Note: The frequency of cleaning operations is ultimately dependent upon

the existing environmental conditions and the applications used.

➣ To perform periodic maintenance:

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

Flash 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. Signal Verification,

page 43).

5 The functional check should be performed every 6 months (see

Functional Check of Unit, page 45).

6 Alignment procedure should be performed only if the signals are below

Threshold value (see Signal Verification, page 43).

7 Zero calibration (see Zero Calibration, page 44) must be done every

time the Detector or Source is realigned or windows cleaned.

Periodic Maintenance 47

SafEyeTM Xenon 700S SIL Gas Detector

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:

1 Turn off the power to the SafEye detector and source. 2 In places where dust or dirt has accumulated on the optical surface,

clean the surface with a small, soft-bristle brush.

3 The surfaces must then be washed thoroughly with water and a mild

non-abrasive detergent.

4 Thoroughly rinse the glass surface with clean water; ensuring no residue

is left behind.

5 Dry the glass with a clean dry soft cloth. 6 Enter in the Maintenance Logbook: Date, name of person and company

who performed the maintenance service.

7 Turn on power to the SafEye detector and source. 8 Perform signal verification (see Signal Verification, page 43). 9 Perform zero calibration (see Zero Calibration, page 44). 10 Perform functional check (see Functional Check of Unit, page 45)

7.2.2 Signal Verification

The signal verification check determines the proper operation of the open path. It checks the alignment and cleanliness of the window or any problem in Source or Detector. Use the PC Host software to measure the signal verification.

Refer to Manual TM 799060 or use I.S handheld unit. Refer to Manual TM 777070 for non I.S Mini laptop Unit.

7.2.3 Function Check of Unit

The SafEye Xenon 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, page 45 for instructions.

Caution: Automatic activation or any external device that should not be activated during the calibration check should be disconnected.

48 Periodic Maintenance

8 Troubleshooting

Troubleshooting Problems

page 49

Problem

Cause

Solution

“Maintenance call”

status or R, S1 and S2 are below 2.5V DC at Gain 4

Poor alignment

Perform alignment

Dirt on the window

Clean the window Poor light source

Replace the light source

Detector fault

Replace/repair Detector

NQRat1 and NQRat2 below the permitted limit

Gas in the path

Make sure that the path is clean and the weather conditions are good

NQRat1 and NQRat2 above the permitted limit

Poor alignment

Perform alignment

R/N, S1/N, S2/N below 50

Poor alignment

Perform alignment

Dirt on the window

Clean the window Poor light source

Replace the light source

Detector fault

Replace/repair Detector

Temperature higher than 25° C beyond the room temperature

Electronic problem

Replace/repair Detector

Ratio1 and Ratio2 out of the limit

Poor alignment

Perform alignment

Dirt on the window

Clean the window Detector fault

Replace/repair Detector

Voltage less than 16V DC. The Detector at “V” fault

Low input voltage

Check the power supply and installation

➣ In this chapter…

8.1 Troubleshooting Problems

Table 21: Troubleshooting Problems

Troubleshooting Problems 49

SafEyeTM Xenon 700S SIL Gas Detector

50 Troubleshooting Problems

Appendices

Appendices 51

SafEyeTM Xenon 700S SIL Gas Detector

52 Appendices

A Wire Selection Tables

General Instructions For Electrical Wiring

page 53

AWG #

mm2

Ohm per 100 ft.

Ohm/100 meter

0.12 - 0.15

4.32

14.15

0.16 - 0.24

3.42

11.22

0.30 - 0.38

1.71

5.60

0.51 - 0.61

1.07

3.50

0.81 - 0.96

0.67

2.20

1.22 - 1.43

0.43

1.40

1.94 - 2.28

0.27

0.88

3.09 - 3.40

0.17

0.55

4.56 - 6.64

0.11

0.35

➣ In this appendix…

A.1 General Instructions For Electrical Wiring

Refer to Table 22 to determine the required wire gauge for general wiring, such as relay wiring. Calculate the permitted voltage fall with respect to loads current, wire gauge and length of wires.

Refer to Table 23 to select wire gauge for power supply wires. DO NOT connect any circuit or load to Detectors’ supply inputs.

Table 22: Maximum DC resistance at 68˚F for copper wire

1 Select "Number of Detectors" connected in one circuit. 2 Select "wiring length" per your installation requirements. 3 Refer to "power supply range" for voltage extreme applied.

General Instructions For Electrical Wiring 53

SafEyeTM Xenon 700S SIL Gas Detector

No. of Detectors

Recommended Wire Diameter

Power Supply Range (VDC)

14 - -

22-32

14 - -

22-32

14 - 22-32

14 - 20-32

4 and less

20-32

Feet

164

328

492

656

820

(Meters)

(50)

(100)

(150)

(200)

(250)

Max. Length from Power Supply to Last Detector

Table 23: Wiring length in feet (meter)

54 General Instructions For Electrical Wiring

B Wiring Option Configurations

RS-485 Communication Network

page 60

➣ In this appendix…

Figure 9: Wiring Option 1

Note: Only 0-20mA is SIL2 approved.

Wiring Option Configurations 55

SafEyeTM Xenon 700S SIL Gas Detector

Figure 10: Wiring Option 2

Note: This option does not comply with SIL2 requirements.

56 General Instructions For Electrical Wiring

TM 799200 Rev (C), January 2014

Figure 11: Wiring Option 3 (Default)

Note: Only 0-20mA is SIL2 approved.

Wiring Option Configurations 57

SafEyeTM Xenon 700S SIL Gas Detector

Figure 12: 0-20mA Wiring (Sink) For Wiring Option 1 and 3

Figure 13: 0-20mA Wiring (Source) For Wiring Option 1 and 3 Notes:

 The Detectors are factory set to isolated 0-20mA-sink version.  For non-isolated 0-20mA version (Source), connect Terminal 8 to

Terminal 1. The 0-20mA meter is connected between Terminal 7 and

Terminal 2.

58 General Instructions For Electrical Wiring

TM 799200 Rev (C), January 2014

Figure 14: 0-20mA 3 Wire Connection for Option 1 and 3

Wiring Option Configurations 59

SafEyeTM Xenon 700S SIL Gas Detector

B.1 RS-485 Communication Network

By using the RS-485 network capability of the SafEye Xenon 700S 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 247 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.

Figure 15: RS-485 Networking for Wiring Option 3

60 RS-485 Communication Network

C Special Conditions to Comply to SIL-2

Safety relevant parameters (700S)

page 61

Guidelines for Configuration, Installation, Operation and Maintenance

page 61 Miscellaneous

page 62

Requirements

➣ In this appendix…

Special conditions to comply with the requirements of EN 61508 for SIL-2 This appendix details the special conditions to comply with the requirements

of EN 61508 for SIL-2. The SafEye 700S can be used in low or high demand mode applications, see IEC 61508.4, Chapter 3.5.12.

C.1 Safety relevant parameters (700S)

Perform the following functional check of the detector half yearly: (see chapters Periodic Maintenance and Function Check of Unit)

 HFT: 0  PFD: 3.3 x 10 -4 (3.3% of SIL-2)  PFH: 1.5 x 10  SFF: Fulfills the conditions of EN 61508 for SIL-2.

-4

(15% of SIL-2) - For 0-20mA signal current application.

C.2 Guidelines for Configuration, Installation,

Operation and Maintenance

Alarm conditions complying with SIL-2 can be implemented only with 0-20mA outputs.

C.2.1 Conditions for Safe Operation

 The SafEye 700S shall consist only of the approved hardware and

software modules

 The 24C power supply must comply with the conditions for “safe low

voltage” according to EN 60950 (PELV / SELV).

 After installation and configuration the set-up parameters must be

verified and the function of the SafEye 700S (gas detection, function of

the 0-20mA interface, relay functions) must be checked completely.

Safety relevant parameters (700S) 61

SafEyeTM Xenon 700S SIL Gas Detector

Mode

Normal

Warning

Alarm

Continuous current with low sensitivity (Full Scale: 5 LEL.m)

4 mA (0 LEL.m)

7.2 mA (1 LEL.m)

13.6 mA (3 LEL.m)

Continuous current with high sensitivity (Full Scale: 2 LEL.m)

4 mA (0 LEL.m)

7.2 mA (0.4 LEL.m)

12 mA (1 LEL.m) Discrete current

4 mA

14 mA

19 mA

C.2.2 Alarm Operation using the 0-20mA Signal Current

The connected controller has to monitor the 0-20mA signal current for valid values: (see cap. Output Signals)

The connected controller has to monitor the 0-20mA signal current for values below 4mA and above 20mA.

C.2.3 Relay Outputs

Relay outputs don’t comply with SIL2 requirements.

C.3 Miscellaneous

The complete functional performance of the gas detector has to be verified half-yearly (gas detection, fault detection, performance of the 0-20mA signal current and the relays), gas alarms ON and OFF.

The HART® and RS 485 interface are not allowed to be used for the transmission of safety related data.

62 Miscellaneous

Technical Support

For all technical assistance or support, contact:

218 Little Falls Road Cedar Grove, NJ 07009, USA Tel: +1 (973) 239 8398 Fax: +1 (973) 239 7614

Email: spectrex@spectrex.net Web-site: www.spectrex.net

Your Local Office:

SPECTREX INC.

Texas (USA)

Mr. Jay Cooley, Regional Sales Manager: 16203 Park Row, Suite 150 Houston, Texas 77084 USA

Phone: +1 (832) 321 5229 Email: jay@spectrex.net

Europe

Mr. Ian Buchanan, Regional Manager: 6 Applecross Road Glasgow G66 3TJ United Kingdom

Phone: +44 (0) 141 578 0693 Email: ian@spectrex.net

Far East

Mr. Deryk Walker, Regional Sales Manager 59 Fen Ji Hu, Danshui Taipei County 25163 Taiwan (ROC)

Phone: +886 2 8626 2893 Mobile: +886 926 664 232 Email: deryk@spectrex.net

Technical Support 63

SafEyeTM Xenon 700S SIL Gas Detector

64 Technical Support

Spectrex Xenon 700 SIL User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Legal Notice

Release History

About this Guide

Abbreviations and Acronyms

1 Scope

1.1 Product Overview

2 Technical Description

2.1 Features

2.2 Applications

2.3 Principle of Operation

2.3.1 Definitions of Terms

2.3.2 Spectral Finger Print

2.3.3 Optical Path

2.3.4 Microprocessor Based

2.3.5 Gas Sensitivity

2.3.6 Gas and Mixture Selection and Setting

2.3.7 Flash Source

2.3.8 Heated Optics

2.3.9 HART Protocol

2.3.10 Handheld Unit

2.3.11 Modbus RS-485

2.3.12 Tilt Mount

2.4 Product Marking

2.5 Models and Types

2.6 Description

2.6.1 Flash Source Unit

2.6.2 Detector Unit

3 Operational Modes

3.1 Operation Modes

3.1.1 Normal Mode

3.1.2 Maintenance Call Mode (3mA Output)

3.1.3 Fault Mode

3.1.4 Zero Calibration Mode (1mA Output)

3.2 Output Signals

3.2.1 Standard 0-20mA Current Output

3.2.2 Dry Contact Relays

3.2.3 RS-485 Interface

3.3 System Set Up

3.3.1 Detection Function Programming

3.3.2 Detection Set-Up Function

3.3.2.1 Gas Calibration

3.3.2.2 Full Scale

3.3.2.3 Zero Calibration

3.3.2.4 Other Functions

3.3.2.5 Address Setup

3.3.2.6 Heated Optic Operation

3.3.3 Default Detector Set up

4 Technical Specifications

4.1 General Specifications

4.2 Electrical Specifications

4.2.1 Power Consumption

4.2.2 Electrical Input Protection

4.2.3 Electrical Interface

4.2.4 Electrical outputs

4.2.4.1 0-20mA Current Output

4.2.4.2 Communication Network

4.2.4.3 Relays Output

4.2.4.4 HART Protocol

4.3 Mechanical Specifications

4.4 Environmental Specifications

4.4.1 High Temperature

4.4.2 Low Temperature

4.4.3 Humidity

4.4.4 Salt and Fog

4.4.5 Water and Dust

4.4.6 Shock and Vibration

4.4.7 Electromagnetic Compatibility (EMC):

5 Installation Instructions

5.1 Introduction

5.2 General Considerations

5.2.1 Personnel

5.2.2 Tools Required

5.2.3 Site Requirements

5.2.4 The Source and Detector

5.2.5 Guidance Tips for Gas Detector Locations

5.3 Preparations for Installation