Honeywell 04230-A-1001 Release Note

Searchline Excel
Infrared Gas Detectors
Technical Handbook

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Ensure that you read and understand these instructions BEFORE operating the equipment.
Please pay particular attention to the Safety Warnings.
WARNINGS
1. TheSearchlineExcelgasdetectoriscertiedforandintendedforuseinpotentially
hazardous areas. Install and use the Searchline Excel gas detector in accordance
with the latest regulations.
2. For installations in the UK, the Code of Practice SELECTION, INSTALLATION
AND MAINTENANCE OF ELECTRICAL APPARATUS FOR USE IN
POTENTIALLY EXPLOSIVE ATMOSPHERES should be strictly observed. General
recommendations are given in BS EN 60079-14 & IEC 60079-14. Refer to BS
EN 60079-29-2 & IEC 60079-29-2 in the UK or the appropriate local or national
regulations.
3. For installations in North America, the national Electrical Code (NFPA 70) or later
issues should be strictly observed.
4. Elsewhere, the appropriate local or national regulations should be used.
5. The Searchline Excel gas detector must be properly earthed to protect against
electrical shock and minimise electrical interference. For electrical installation design
considerations refer to Section 3.
6. Operators must be fully aware of the action to be taken if the gas concentration
exceeds an alarm level.
7. Dismantling or repair of equipment should be carried out in the safe area only.
8. Test gases may be toxic and/or combustible. Refer to Material Safety Sheets for
appropriate warnings.
9. Do not drill holes in any housing as this will invalidate the explosion protection.
10. In order to maintain electrical safety, the unit must not be operated in atmospheres
with more than 21% oxygen.
11. Ensurethattheboltswhichsecureameproofenclosuresarefullytightened.The
securingboltsusedaremadefromaspecialcertiedgradeofsteel.Onlybolts
suppliedbyHoneywellAnalyticsshouldbettedforthispurpose.
12. Do not open the enclosure in the presence of an explosive atmosphere.
13. The transmitter unit contains high voltages when operational. These are discharged
when the unit is removed from its enclosure.
14. TheconduitandcableglandsttedtoSearchlineExcelshouldnotbemodied.If,
however,itbecomesnecessarytomakemodicationstheymustcomplywiththe
relevant national Codes of Practice.
15. The irradiance and power emitted by the Searchline Excel transmitters is less than
5 mW/mm2and 15 mW/mm2respectively.
SAFETY

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CAUTIONS
1. Use only approved parts and accessories with the Searchline Excel gas detector.
2. To maintain safety standards, commissioning and regular maintenance of the Searchline
Excelgasdetectorshouldonlybeperformedbyqualiedpersonnel.
IMPORTANT NOTICES
1. Honeywell Analytics Limited can take no responsibility for installation and/or use of its
equipment if this is not done in accordance with the appropriate issue and/or amendment
of the manual.
2. The user of this manual should ensure that it is appropriate in all details to the exact
equipment to be installed and/or operated. If in doubt, the user should contact Honeywell
Analytics Limited for advice.
3. Effect of explosive atmosphere on materials.
Searchline Excel is made from materials which exhibit good resistance to corrosive and
solvative substances. The Exd enclosures are made from 316 stainless steel and the
explosion protected windows are made from toughened soda lime glass. Honeywell
Analyticsarenotawareofanysignicanteffectsofexplosiveatmospheresuponthese
materials.ContactHoneywellAnalyticsoroneoftheiragentsforspecicqueries.
Honeywell Analytics Limited reserve the right to change or revise the information supplied in
this document without notice and without obligation to notify any person or organisation of such
revision or change.
If further details are required that do not appear in this manual, contact Honeywell Analytics
Limited or one of their agents.
SAFETY
Revision History
Revision Comment Date
Issue 14 A03864 Nov 2016
Issue 15 A05004 July 2017

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CONTENTS
SAFETY 2
1. INTRODUCTION 6
2. OVERVIEW 8
2.1 Introduction 8
2.2 Transmitter 9
2.3 Receiver 10
2.4 Adjustable Mountings 12
3. INSTALLATION AND OPERATION 13
3.1 Introduction 13
3.2 Siting and Mounting 14
3.3 Electrical connections 18
3.4 Power supply 25
3.5 Unpacking 28
3.6 Installation procedure 30
3.7 Alignment and commissioning 36
3.8 System Controller calibration 51
3.9 Installation Checks/Tests 52
4. MAINTENANCE 58
4.1 Inspection and Cleaning 58
4.2 Searchline Excel: Plastic Functional Test Filters – Open
Path 58
4.3 Calibration Check using the Gassing Cell 59
4.4 Display Gas Reading 61
4.5 Alignment Telescope 62
4.6 Operational Maintenance (FM) 62
5. PROBLEM SOLVING 63
6. SPECIFICATIONS 68
6.1 System 68
7. CERTIFICATION 70
7.1 General 70
7.2 ATEX & IECEx 71
7.3 UL 77
7.4 CSA/FM 80
7.5 RoHS - Restriction of Hazardous Substances 85

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CONTENTS
APPENDIX A - HANDHELD INTERROGATOR 86
A.1 Introduction 86
A.2 Overview 86
A.3 Connection to System 87
A.4 Basic User Tasks 88
A.5 Menus 89
A.6 Problem Solving 103
A.7 specication 104
APPENDIX B - GLOSSARY 106
B.1 Terminology 106
B.2 Measurement Units 106
B.3 Abbreviations 107
APPENDIX C - ACCESSORIES & SPARE PARTS 109
C.1 System Units 109
APPENDIX D - MARINE BRACKET 115
D.1 OVERVIEW 115
D.2 INSTALLATION AND OPERATION 116

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Searchline Excel is a hydrocarbon gas detection system that is available in two versions:
• Searchline Excel Open-Path Gas Detector
• Searchline Excel Cross-Duct Gas Detector
For information regarding the Cross-Duct Excel please refer to the Searchline Excel Cross-Duct
Technical Handbook, part number 2104M0520.
Searchline Excel Open-Path Gas Detector (OPGD) consists of aTransmitter unit that sends an
infraredbeamtoaReceiverunitupto200metresaway,andcanbelocatedwhereaammable
hydrocarbon gas cloud is likely to occur.
Thedetectoroperatesontheprincipleofinfrared(IR)absorption.Gasesabsorblightatspecic
wavelengths depending on their molecular composition. Hydrocarbon gases absorb in the
infrared region of the spectrum. If a cloud of hydrocarbon gas is present, part of the infrared
light is absorbed by the gas, causing a reduction in the signal received that is proportional to
the amount of gas in the beam.
The Searchline Excel Transmitter unit produces the infrared light, and the Receiver unit features
optical detectors and signal processing electronics. Each unit is housed in a robust stainless
steel housing. The Receiver produces a 4 - 20mA analogue output equivalent to 0 - 5 LEL.m
(Lower Explosive Limit metres) of gas.
NOTE: THE INFRARED BEAM IS INVISIBLE AND EYE SAFE
Searchline Excel is designed for use in the most demanding environments/applications and
provides a sensitive, fast and reliable response. The sophisticated open-path technology
provides immunity to sunlight and minimises the effects of environmental factors such as rain,
fog, ice, snow and condensation.
The Transmitter and Receiver units incorporate heated optics designed to minimise the build
up of humidity, condensation, snow or ice on the glass windows, that could obscure the optics
in extreme conditions.
The system is microprocessor controlled with integral self-diagnostics and fault nding
facilities.
Local communication between an operator/technician and the gas detector system is made
via an associated Handheld Interrogator that uses the Receiver’s inbuilt RS485 serial link.
The interrogator provides the user with a menu-style interface to select and invoke commands
for commissioning and configuring the system, and for viewing the system state and
measurements.
The interrogator is connected to the Receiver via one of Honeywell Analytics' DX100 (M) series
types of Termination Unit, or via other types of junction box (including the Honeywell OELD
smart junction box) using the optional SHC Protection Device. The DX100(M) Termination Units
feature an active digital interface that allows a remotely located control centre to monitor the
gas detector's signal output and perform basic commands using the Modbus Remote Terminal
Unit (RTU) protocol over an RS485 link.
1. INTRODUCTION

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This handbook consists of the following parts:
• Chapter 1 Introduction
• Chapter 2 System Description
• Chapter 3 Installation And Operation
• Chapter 4 Maintenance
• Chapter 5 Problem Solving
 • Chapter6  Specications
 • Chapter7  Certication
• Appendix A Handheld Interrogator
• Appendix B Glossary
• Appendix C Accessories & Spare Parts
• Appendix D Marine Bracket
Information notices
The types of information notices used throughout this handbook are as follows:
WARNING
Indicates hazardous or unsafe practice that could result in severe injury
or death to personnel.
Caution: Indicates hazardous or unsafe practice which could result in minor injury to
personnel, or product or property damage.
Note: Provides useful/helpful/additional information.
If more information beyond the scope of this technical handbook is required please contact
Honeywell Analytics.
Associated Documents
Searchline Excel Open-Path Infrared Gas Detector
Basic Installation Guide Part No: 2104M0510
DX100 Series Termination Units Technical Handbook Part No: 2104M0701
OELD Operating Instructions Part No: 3011M5001
1. INTRODUCTION

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2.1 INTRODUCTION
Each type of Searchline Excel gas detector consists of two units, a Transmitter and a Receiver.
ThisseparateTransmitter/Receivercongurationprovidesthemostreliablebasisforopenpath
gasdetection.ForMarineCertiedversionsandtoensurecompliancewiththisapproval,please
refer to Appendix D for details of the maritime mounting brackets and associated hardware.
2. OVERVIEW
OELD or DX100(M) (or other
junction box)
Mounting plate
Mounting bracket
Pivot block
Receiver
Flexible conduit
Monitored
path
5 - 200 m
Honeywell Analytics
Junction Box
00780-A-0100 (or
other junction box)
Transmitter

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There are three ranges of Searchline Excel gas detector. These are:
Open-Path Short Range 5 – 40m (15ft – 130ft)
Medium Range 40 – 120m (130ft – 390ft)
Long Range 120 – 200m (390ft – 650ft)
When designing an installation for Searchline Excel it is important that the correct range of the
gasdetectorforeachpathtobemonitoredisselectedandspecied.
The Transmitter and Receiver are each mounted upon robust, adjustable mounting brackets.
These brackets bolt to a mounting plate, which is designed to accommodate a variety of junction
boxes,accessoriesandmechanicalmountingcongurations.Thesmallsizeandexibilityof
Searchline Excel and its mounting arrangements are intended to make correct installation
design as simple as possible. Installation details are given in Chapter 3.
2.2 TRANSMITTER
The Searchline Excel Transmitter produces an intense, collimated infrared beam which is
producedbyaXenonarcashlamp.
Theashlamp’sinfraredoutputiscollimatedusingmirrorswhichenablesamoreuniformbeam
(no chromatic aberrations) to be produced and hence reduces alignment sensitivity. In order
topreventannoyingvisibleashes,thevisibleemissionsfromtheashlampareblockedbya
lter.
TheTransmitter’sashlampispulsedatprecisely4Hz,eachpulselastingforapproximately
one microsecond. The precise timing and extremely short duration of these pulses give the
Transmitter a very distinctive signature. This distinctive signature makes it easy for the Receiver
todistinguishSearchlineExcelTransmitterpulsesfrombothnaturalandarticialsourcesof
infrared radiation.
NOTE: THE INFRARED BEAM IS INVISIBLE AND EYE SAFE.
ThemediumandlongrangeTransmitterscontainahigherpowerashlampandlargeroptics
than the standard short range unit. The resulting infrared beam is many times brighter which
allows for a considerable increase in operating range.
2. OVERVIEW

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The Transmitter window is heated to minimise condensation, frosting and the build up of snow.
During particularly cold operating conditions, the heating of the Transmitter window is increased
to turbo levels. The turbo mode can be disabled if not required.
Electrical connections to the Transmitter are made via wires which run through the protective,
exibleconduit.TherearethreeTransmitterwires,red(+24V),black(0V)andgreenIyellow
(GND).
2.3 RECEIVER
The Searchline Excel Receiver collects infrared radiation from the Transmitter and performs
measurements to enable hydrocarbon gases in the beam path to be detected.
Infrared radiation is collected by a single, silicon lens, which is common to both the sample and
reference measurement channels. This radiation is divided by a beamsplitter and fed to two
ltereddetectors,sampleandreference.
Thesampledetectorinputislteredatwavelengthswherestronginfraredabsorptionisexhibited
bythetargetgas.Thereferencedetectorinputislteredatnearbywavelengths,wherestrong
infrared absorption is not exhibited by the target gas. By calculating the ratio of the sample to
reference signal it is possible to measure the quantity of gas in the beam, whilst compensating
for the effects of rain, fog, dirt etc.
2. OVERVIEW
160mm (SR)
211 (MR/LR)
417mm (SR)
433 (MR/LR)
291mm (SR) 353 (MR/LR)
Approximately
300mm