Honeywell Searchpoint Optima Plus User manual

Searchpoint Optima Plus
with optional HART®output
Operating Instructions

MAN0905_Issue 7_07/17 Searchpoint Optima Plus with optional HART®output
Operating Instructions
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Revision History
Revision Comment Date
Issue 6 A04544 May 2015
Issue 7 A05004 July 2017

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1. Safety Warnings and Information
WARNINGS
1. Installation must be in accordance with the recognized standards of the appropriate authority in
the country concerned. For Europe see EN60079-14, EN60079-29-2, and EN61241-14. For
installations in North America, the National Electrical Code (NFPA 70) should be strictly observed.
Elsewhere the appropriate local or national regulations should be used.
2. Searchpoint Optima Plus is designed for installation and use in Zone 1 or 2 hazardous areas
(International) and for Class 1 Division 1 or 2 area applications (North America).
3. Donotmodifyoraltertheconstructionoftheproductasessentialsafetyandcertication
requirements may be invalidated.
4. In order to maintain electrical safety, the product must not be operated in atmospheres with more
than 21% oxygen.
Cautions
During usage, as some test gases may be hazardous, outlets from gassing accessories should exhaust to a
safe area.
UseoftheSearchpointOptimaPlusoutsideofthespeciedrangeofoperatingconditionswillinvalidate
certicationandproductapproval.
CSA performance approval only covers the gas detection function.
Special Conditions of Use
InordertocomplywiththeATEXCertication,thefollowingspecialconditionsofusemustbeadheredto:-
1. The integral supply cables must be mechanically protected and terminated in a suitable terminal or
junction facility.
2. ThecoverxingscrewsshallbestainlesssteelgradeA4-80minimum(onlyuseHoneywellsupplied
screws).

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Contents
Section Page
1. SAFETY WARNINGS AND INFORMATION 2
1.1 HOWTOUSETHISMANUAL 7
1.2 BATTERIES
8
1.3 DISPOSAL
8
  1.3.1 SearchpointOptimaPlus 8
  1.3.2 Packaging 8
1.4 INFORMATION 9
2 INTRODUCTION 9
2.1 SEARCHPOINTOPTIMAPLUS 10
2.2 SEARCHPOINTOPTIMAPLUSOPTIONS 11
2.3 TERMINATION UNIT OPTIONS 12
2.4 COMMISSIONINGANDMAINTENANCETOOLS 13
2.5 WEATHERPROTECTIONACCESSORIES 13
2.6 GASSING ACCESSORIES 14
2.7 MOUNTING ACCESSORIES 15
3 MECHANICALINSTALLATION 17
3.1 SITING 17
3.2 INSTALLATION 17
  3.2.1 StandardInstallation 18
  3.2.2 Installationwithaowhousing(samplingsystem) 19
3.2.3 Sampling system using Remote Gassing Cell (RGC) 20
3.2.4 Installation in a duct 20
3.2.5 Installation of gassing pipes for Remote Gassing Cell 23
4 ELECTRICALINSTALLATION 24
4.1 POWERSUPPLY 24
4.2 CABLINGRECOMMENDATIONS 25
4.3 EARTHREGIMES 25
4.4 CONNECTIONS 27
5 OPERATION 29
5.1 DEFAULTCONFIGURATION 29
5.2 HART®OPERATIONDURINGFAULT 29
6 COMMISSIONING 30
6.1 FIRSTTIMESWITCHON 30
7 MAINTENANCE 31
7.1 INTRODUCTION 31
7.2 INSPECTION 31
7.3 INSPECTIONOFAUNITFITTEDWITHAFLOWHOUSING 31
7.4 BUMPTEST(GASCHALLENGE) 32
7.5 BUMPTEST(GASCHALLENGE)WITHREMOTEGASSINGCELL(RGC) 33

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8 USEOFTHESHC1HANDHELDINTERROGATOR 34
 8.1 INTRODUCTION 34
 8.2 SHC1CONNECTION 34
 8.3 SHC1OPERATION 36
 8.4 STATUS INDICATION 37
 8.5 SHC1BATTERYREPLACEMENT 37
9 COMMISSIONINGUSINGSHC1HANDHELDINTERROGATOR 38
9.1 INTRODUCTION 38
9.2 FIRSTTIMESWITCHON 38
9.3 CLEARFAULTSORWARNINGS 39
9.4 FIXTHE4-20MAOUTPUT 39
9.5 TEST4-20MALOOPINTEGRITY 40
10 MAINTENANCEUSINGSHC1HANDHELDINTERROGATOR 41
10.1 INTRODUCTION 41
10.2 INSPECTION 41
10.3 INSPECTIONOFAUNITFITTEDWITHAFLOWHOUSING 42
10.4 BUMPTEST(GASCHALLENGE) 43
10.5 BUMPTEST(GASCHALLENGE)WITHREMOTEGASSINGCELL(RGC) 43
10.6 RE-ZEROSEARCHPOINTOPTIMAPLUS 44
10.7 CALIBRATION 45
 10.8 INVESTIGATIONOFFAULTSORWARNINGS 46
11 USEOFTHEHART®COMMUNICATIONS 47
11.1 GENERAL 47
11.2 CONNECTION 47
11.3 SEARCHPOINTOPTIMAPLUS USER INTERFACE 47
  11.3.1 AccessLevelsandPasswordProtection 47
  11.3.2 MenuStructure 48
11.3.3 Menu Navigation 50
11.3.4 Error Reporting 50
12 COMMISSIONINGUSINGHART®COMMUNICATIONS 51
12.1 INTRODUCTION 51
12.2 FIRSTTIMESWITCHON 52
12.3 USER CONFIGURATION 52
12.3.1 Change the Password 52
  12.3.2 CongureHART®Operation during Fault 53
12.3.3 Set the Time and Date 53
  12.3.4 CongureWarning,InhibitandOverrangeSignalLevels 54
12.4 CONFIGURE DEVICE IDENTIFICATION INFORMATION 54
12.5 FIXTHE4-20MAOUTPUT 55
12.6 TEST4-20MALOOPINTEGRITY 56
12.7 CALIBRATETHE4-20MALOOP 56
 12.8 CONFIGUREINTERNALALARMTHRESHOLD 57
12.9 SIMULATION 57
12.10 CLEARFAULTSORWARNINGS 58
Contents

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13 MAINTENANCEUSINGHART®COMMUNICATIONS 60
13.1 INTRODUCTION 60
13.2 INSPECTION 60
13.3 INSPECTIONOFAUNITFITTEDWITHAFLOWHOUSING 61
13.4 BUMPTEST(GASCHALLENGE) 62
13.5 BUMPTEST(GASCHALLENGE)WITHREMOTEGASSINGCELL(RGC) 63
13.6 RE-ZEROSEARCHPOINTOPTIMAPLUS 64
13.7 CALIBRATION 64
 13.8 STORECALIBRATIONINFORMATION 65
13.9 INVESTIGATIONOFFAULTSORWARNINGS 66
14 PROBLEMSOLVING 67
14.1 TROUBLESHOOTING 67
14.2 WARNINGANDFAULTMESSAGES 71
14.3 FURTHERASSISTANCE 72
15 SPECIFICATIONS 73
15.1 SPECIFICATIONS 73
15.2 AVAILABLEGASCALIBRATIONS 74
  15.2.1 HydrocarbonversionofSearchpointOptimaPlus 74
15.2.2 Ethylene version of Searchpoint Optima Plus 77
 15.3 CROSSINTERFERENCETOOTHERGASESANDVAPOURS 78
16 ORDERING INFORMATION 79
17 WARRANTY SUMMARY 82
18 CERTIFICATIONANDAPPROVALS 83
 18.1 ECDECLARATIONOFCONFORMITY 83
 18.2 HAZARDOUSAREACERTIFICATION 83
  18.2.1 ATEX 83
  18.2.2 UL 83
  18.2.3 InMetro(Brazil) 83
  18.2.4 CSA 84
  18.2.5 FM 84
  18.2.6 CU-TREx(Eurasian)Approval–XTCVersion 84
  18.2.7 CCCF(China) 84
  18.2.8 IECEx 84
 18.3 PERFORMANCEAPPROVALS 84
  18.3.1 ATEX 84
  18.3.2 FM 85
  18.3.3 RussianPatternApproval(Metrology)-XTCVersion 85
 18.4 MARINEAPPROVALS 86
 18.5 SHC1HANDHELDINTERROGATORHAZARDOUSAREACERTIFICATION 86
  18.5.1 ATEX 86
  18.5.2 IECEx 86
19 APPENDIX1–SHC1ADDITIONALFUNCTIONS 87
19.1 CHANGINGTHETARGETGAS 87
19.2 SELFTEST 88
Contents

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20 APPENDIX2–HART®ADDITIONALFUNCTIONS 89
20.1 CHANGINGTHETARGETGAS 89
20.2 SETHART®LOOPCURRENTMODE 91
21 APPENDIX3–SPECIALNOTESFORHONEYWELLMCTOOLKITUSERS 92
22 APPENDIX4–ENDOFLIFEBATTERYREMOVAL 93
23 APPENDIX5-HART®COMMANDS USED 94
23.1 UNIVERSALCOMMANDS 94
23.2 COMMON-PRACTICE COMMANDS 94
23.2.1 Supported Commands 94
23.2.2 Burst Mode 94
23.2.3 Catch Device Variable 94
23.3 DEVICE-SPECIFIC COMMANDS 95
Contents

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1.1 How to use this manual
This manual contains three sets of instructions for Searchpoint Optima Plus - as a stand alone unit, when
usingtheSHC1HandheldInterrogatorandwhenusingtheHART®communications. Use the guide below to
ndtherelevantchapters:-
Stand alone unit
Chapters 1-5 Introduction, Installation and Operation
Chapters 6-7 Commissioning and Maintenance
 Chapters14-16 ProblemSolving,SpecicationandCertication
With SHC1 Handheld Interrogator
Chapters 1-5 Introduction, Installation and Operation
 Chapters8-10 UseofSHC1,CommissioningandMaintenance
 Chapters14-16 ProblemSolving,SpecicationandCertication
Appendix 1 Additional Functions
With HART®communications
Chapters 1-5 Introduction, Installation and Operation
 Chapters11-13 UseofHART®, Commissioning and Maintenance
 Chapters14-16 ProblemSolving,SpecicationandCertication
Appendix 2 Additional Functions
Searchpoint Optima Plus with XNX Universal Transmitter
When using Searchpoint Optima Plus with the XNX Universal Transmitter, this manual and the
XNXUniversalTransmittermanualarerequired.Therelevantchaptersofthismanualare:-
Chapters 1-4 Introduction and Installation
Chapter 7 Maintenance
 Chapters14-16 ProblemSolving,SpecicationandCertication
For Commissioning and Operation please use the XNX Universal Transmitter manual (part number
1998M0738).
TheXNXUniversalTransmitterhasitsownintegralHART®communications and will not re-transmit the
Searchpoint Optima Plus communications. Please refer to the XNX Universal Transmitter manual for the
appropriateHART®commands and menu structure.
Note:ThismanualisforusewithSearchpointOptimaPlusunitsofmodstate9andabove.
Note:Translationsofthismanualinvariouslanguagesareavailable,eitherontheCDaccompanyingthe
product or at our website. Navigate to www.honeywellanalytics.com and use the Document Download
utility. It may be necessary to register to view all of the available documents.
1. Safety Warnings and Information

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1.2 Batteries
Belowisalistingofbatteriespresentintheproductscoveredbythismanual:
Battery Description Battery Type Location Replaceable
Size 6LR61 (PP3) Alkaline SHC1 Handheld Interrogator Yes
Size CR2032 Lithium Manganese Dioxide Searchpoint Optima Plus No
Batteries contain various active ingredients which store electrochemical energy and can be dangerous if
they contact your skin.
Removal and Disposal Information:
The product documentation includes instructional information of the proper removal of
thebatteriesusedintheseproducts(Section8.5andAppendix4).Thesymbolleftmeans
that according to local laws and regulations the battery installed within your product
should be disposed of separately from household waste. When the battery reaches its
end of life, take it to a collection point designated by local authorities.
1.3 Disposal
1.3.1 Searchpoint Optima Plus
When Searchpoint Optima Plus reaches the end of its life it should be disposed of in accordance with local
regulations.
SearchpointOptimaPlusconsistsofthefollowingtypesofmaterials:-
• Stainless steel
• Various epoxy resins
• Various glasses
• Various engineering plastics
• Various rubbers
• Printed circuit boards
See Appendix 4 for instructions on battery removal.
1.3.2 Packaging
Searchpoint Optima Plus packaging is made from cardboard. Facilities for recycling are widely available.
1. Safety Warnings and Information

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1.4 Information
This manual is for use with Searchpoint Optima Plus, Searchpoint Optima Plus XTC, Searchpoint Optima
X and Searchpoint Optima Z units of mod state 9 and above. For Searchpoint Optima X and Searchpoint
Optima Z please also refer to the supplementary information sent with the product.
HoneywellAnalyticscantakenoresponsibilityforinstallationand/oruseofitsequipmentifnotdonein
accordancewiththeappropriateissueand/oramendmentoftheOperatingManual.
The reader of this Operating Manual should ensure that it is appropriate in all details for the exact
equipmenttobeinstalledand/oroperated.Ifindoubt,contactHoneywellAnalyticsforadvice.
ThefollowingtypesofnoticesareusedthroughoutthisOperatingManual:
WARNING
Identiesahazardousorunsafepracticewhichcouldresultinsevereinjuryordeathtopersonnel.
Caution: Identies a hazardous or unsafe practice which could result in minor injury to personnel, or
product or property damage.
Note:Identiesuseful/additionalinformation.
Everyefforthasbeenmadetoensuretheaccuracyofthisdocument,however,HoneywellAnalyticscan
assume no responsibility for any errors or omissions in this document or their consequences.
HoneywellAnalyticswouldgreatlyappreciatebeinginformedofanyerrorsoromissionsthatmaybefound
in the content of this document.
Forinformationnotcoveredinthisdocument,orifthereisarequirementtosendcomments/corrections
aboutthisdocument,pleasecontactHoneywellAnalyticsusingthecontactdetailsgivenonthebackpage.
Honeywell Analytics reserve the right to change or revise the information supplied in this document
without notice and without obligation to notify any person or organization of such revision or change.
If information is required that does not appear in this document, contact the local distributor/agent
or Honeywell Analytics.
1. Safety Warnings and Information

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2. Introduction
2.1 Searchpoint Optima Plus
Searchpoint Optima Plus is an infrared hydrocarbon gas detector suitable for use in hazardous areas. It has
worldwidecerticationapprovalsincludingIECEx,ATEX,ULandCSA.
It uses the principle of infrared absorption to detect hydrocarbon gases and vapours in various
concentration ranges.
Standard weather
protection
Certification label
Gas measuring path
Inlet / outlet for
remote gassing
cell
Optional remote gassing cell (use for
gas testing or % v/v monitoring)
Mounting thread
(M25 or ¾ NPT)
Searchpoint Optima Plus has a robust
stainless steel enclosure with an ingress
protection level of IP66 and IP67.
Dependingonthecerticationoption,it
has an M25 or ¾ NPT mounting thread.
Searchpoint Optima Plus has a 4-20 mA
signal output that corresponds to 0-100
%FSD. Output values below 4 mA
indicate fault, warning and inhibit.
Searchpoint Optima Plus is supplied
calibratedandlinearisedforaspecic
target gas. A wide selection of gases
isavailablein0–100%LELrange,as
well as some ppm range options. The
range0–100%v/vmethaneisavailable
exclusively for use in sampling systems.
SearchpointOptimaPluscancommunicatewiththeSHC1HandheldInterrogator,whichcanbeusedto
accesscomprehensivediagnosticinformation,andtocarryoutcalibrationandconguration.Asanoption,
HART®communicationsareavailabletoperformthesamefunctionseitherusingaHART®handheld device
or from a central control room.
Note:SearchpointOptimaPluscanbeinstalled,commissionedandfunctionallytestedusingonlythe
4-20mAoutput.However,conguration,calibrationandfaultdiagnosisrequireeithertheSHC1Handheld
Interrogator,HART®communications or the XNX Universal Transmitter.

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2. Introduction
2.2 Searchpoint Optima Plus Options
Searchpoint Optima Plus is available in an ethylene version which is optimised for the detection of certain
solvents.
Searchpoint Optima X is a variant of Searchpoint Optima Plus exclusively for use in sampling systems.
A fast speed of response is made possible by minimising the volume of the sample cell. Please contact
HoneywellAnalyticsforfurtherdetailsofthisvariant.
Searchpoint Optima Z is a variant of Searchpoint Optima Plus optimised for the detection of the solvents
ethanolandethylacetate.Itisexclusivelyforuseinsamplingsystems.PleasecontactHoneywellAnalytics
for further details of this variant.
AllversionsofSearchpointOptimaPluscanbesuppliedwithHART®over 4-20 mA communications.

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2.3 Termination unit options
ThereareseveralterminationunitoptionsforSearchpointOptimaPlus,dependingonthecertication
required, whether digital communications will be used and additional features such as a local display.
HALO Junction Box*
• ATEX, IECEx approvals
• Ex e enclosure
• One M25 and three M20 cable entries
• Visual status indication (Normal, Warning, Fault, Alarm, Inhibit)
• Non-intrusiveconnectionforHART®handheld device (optional)
XNX Universal Transmitter
• ATEX,IECEx,UL,CSAapprovals
• Five ¾ NPT or M25 cable entries
• Localdisplay
• Non-intrusive access using magnetic switches
• HART®communications
• Non-intrusiveconnectionforHART®handheld device (optional)
• Modbus communications (optional)
• Relays (optional)
DVC 100 Series Termination Unit
• ATEX, IECEx approvals
• Ex e enclosure
• One M25 and two M20 cable entries
• Non-intrusiveconnectionforSHC1HandheldInterrogator
• Modbus communications (optional)
Honeywell Analytics Junction Box
• ATEX, IECEx approvals
• Ex e enclosure
• One M25 and three M20 cable entries
• SHC1HandheldInterrogatorconnectionusingSHCProtectionDevice(intrusive)
UL/CSA Aluminium Junction Box
• UL,CSAapprovals
• Two ¾ NPT cable entries
• SHC1HandheldInterrogatorconnectionusingSHCProtectionDevice(intrusive)
*ContactHoneywellAnalyticsforavailability
2. Introduction

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2. Introduction
2.4 Commissioning and Maintenance Tools
SHC1 Handheld Interrogator
TheSHC1HandheldInterrogatorisacommissioningandmaintenancetoolwhichcommunicateswith
Searchpoint Optima Plus. It can be connected directly to a DVC100 series termination unit (non-intrusive),
orusedwithothertypesofjunctionboxprovidedtheSHCProtectionDeviceisused(hotworkpermit
required).
• Useforconguration,commissioning,testandmaintenance
• Portable
• Intrinsically safe
• DedicatedcommunicationdeviceforHoneywellAnalyticsopticaldetectors
HART®communication option
SearchpointOptimaPluscanbesuppliedwithHART®over 4-20 mA communication.
• Useforconguration,commissioning,testandmaintenance
• CommunicateswithlocalHART®handhelddeviceorremoteHART®host
• Conformstoversion7oftheHART®protocol
2.5 Weather protection accessories
Searchpoint Optima Plus has a range of weather protection accessories designed to protect the optical
surfacesfromenvironmentalconditionswithoutcompromisingperformance.PleasecontactHoneywell
Analytics to discuss the most suitable weather protection for a particular application.
As standard, Searchpoint Optima Plus is supplied with Standard Weather Protection, Dust Barrier and
Sunshade/DelugeProtection.
Standard Weather Protection Sunshade/Deluge Protection
(2108B0276) (2108D0275) 
Provides the best compromise
between response time and
protection. Suitable for indoor,
outdoor and duct mounting
applications
Provides additional protection against
heavy rainfall, wash downs and direct
sunlight.

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2. Introduction
Storm Bafe(2108B0280)      Dust Barrier(2108B0259)
Provides increased protection
against torrential rain and driven
sea-spray. Recommended for
exposed installations in maritime
locations or areas where monsoon
or tropical rain conditions are
experienced. Also provides protection
against steam and can be used in
unlteredducts.
This accessory will increase the
detector’s response time.
Used to achieve accurate calibration
of Searchpoint Optima Plus. Requires
all weather protection to be removed
except dust barrier.
Used to apply gas to Searchpoint
OptimaPlusintheeld.Suitablefor
functional checking. Fits over the
standard weather protection. (For
calibration, use the Calibration Cap).
Prevents the ingress of dust or oil
mist and protects the optics in very
wet or exposed locations. Fits under
the Standard Weather Protection.
This accessory will increase the
detector’s response time.
2.6 Gassing Accessories
Searchpoint Optima Plus has a range of accessories designed to assist with gas testing.
Calibration Cap(2108B0272)  Gassing Cover(2108D0258)
Caution: The Calibration Cap and the Gassing Cover must be removed after use.
Inlet
Outlet

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2. Introduction
Flow Housing(2108B0282)Remote Gassing Cell ( 2 1 0 8 B 0 2 4 0 ) 
Inlet
Outlet
For use in sampling system applications.
Material:solventresistantanodised
aluminium, with stainless steel nozzles,
outside diameter 6 mm. Searchpoint
OptimaZisonlysuppliedwithaow
housing.
Enableshigh%v/vconcentrationgas
to be applied remotely for performing
bump tests. Useful for units installed in
ducts or inaccessible areas. Required for
0–100%v/vmethanerange(sampling
system only). Searchpoint Optima X has
a special version of the RGC.
The RGC is a factory tted option.
2.7 Mounting Accessories
Junction Box Adaptor Plate (04200-A-1040)
The Junction Box Adaptor Plate enables low
gland clearance junction boxes to be used without
the Searchpoint Optima Plus fouling on the wall
/mountingsurface,forexampletheHoneywell
AnalyticsJunctionBox(00780-A-0100).Italso
has mounting points for the DVC100 and DVC100
MK2terminationunits.

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2. Introduction
European Duct Mounting Kit – Metric Threads (2104B0349)
US Duct Mounting Kit – NPT Threads (2442-0016)
This kit enables M25 versions of Searchpoint
Optima Plus to be conveniently mounted inside
a duct. Electrical connections are made to the
detector via a junction box which is mounted
outside of the duct. Test gas can be applied to the
detector via the gassing points provided.
Note:thedetectormusthavetheRemoteGassing
Celloptionfactorytted.
This kit enables ¾ NPT versions of Searchpoint Optima Plus to be conveniently mounted inside a duct.
Electrical connections are made to the detector via a junction box which is mounted outside of the duct.
Test gas can be applied to the detector via the gassing points provided.
Note:thedetectormusthavetheRemoteGassingCelloptionfactorytted.
Gassing
Points
Searchpoint
Optima
Duct
Mounting
Plate
Junction
Box
Bracket
Junction
Box

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3. Mechanical Installation
WARNING
Installation must be in accordance with the recognized standards of the appropriate authority in the
country concerned. For Europe see EN60079-14, EN60079-29-2, and EN61241-14. For installations
in North America, the National Electrical Code (NFPA 70) should be strictly observed. Elsewhere the
appropriate local or national regulations should be used.
3.1 Siting
The placement of gas detectors should be determined following the advice of experts having specialist
knowledge of gas dispersion, experts having knowledge of the process plant system and equipment
involved, safety personnel and engineering personnel. The agreement reached on the location of detectors
should be recorded.
Guidance on the positioning of gas detectors to provide the best detection coverage is contained in
IEC/EN60079-29-2andothernationalCodesofPractice.Itisrecommendedthattheinstallationdesigner
consults these Codes of Practice when determining where detectors are to be located.
Inaddition,considerthefollowingpoints:-
1. Searchpoint Optima Plus must be mounted horizontally to reduce the risk of contamination building up
on the optical surfaces.
2. SearchpointOptimaPlusiscertiedandspeciedforoperationinambienttemperaturesfrom-40°C
 to+65°C.Operationoftheunitoutsideofthistemperaturerangeinvalidatesthecerticationandthe
warranty.
3. SearchpointOptimaPlusisspeciedforoperationinenvironmentswheretherateofchangeofunit
 temperatureislessthan3°C/minute.Exceedingthisrateofchangeoftemperaturewillcausetheunit
to report a fault and may cause permanent damage.
4. SearchpointOptimaPlushasbeenvibrationtestedtothelevelsspeciedinEN60079-29-1.Donot
install units in locations where the vibration exceeds this level.
5. Wherepossible,locatedetectorsawayfromsourcesofairbornecontaminantsandsteam/
condensation, which could build up on the optical surfaces.
6. In extreme environmental conditions, consider the use of additional weather protection options
(see Introduction, Weather Protection Accessories).
PleasecontactHoneywellAnalyticsforfurtheradviceifrequired.
3.2 Installation
Note:SearchpointOptimaPlusmustbemountedhorizontallytoreducetheriskofcontaminationbuilding
up on the optical surfaces.
The Standard Installation section describes general mounting and installation. Additional information is
provided for using Searchpoint Optima Plus in a sampling system or a duct, and for the use of the Remote
Gassing Cell.

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3.2.1 Standard Installation
1. Select a suitable entry in the junction box - Searchpoint Optima Plus must be mounted horizontally.
 ThemountingthreadsizeiseitherM25or¾NPT(certicationdependent).
2. Secure the junction box to the mounting surface in the required orientation. Refer to individual junction
box instructions for mounting information.
3. Remove the junction box lid.
4. Fit the Searchpoint Optima Plus detector to the junction box.
Ensure that the junction box thread is compatible with the Searchpoint Optima Plus thread.
FeedtheSearchpointOptimaPluscablesthroughtheentryandscrewthedetectorinrmly.Becarefulto
avoid cross-threading.
Note:M25versionshaveanylonsealingwasherwhichisrequiredtomaintaintheIPrating.
Note:M25versionsshouldbesecuredusingalocknut.Seediagrambelow.
Enclosure / Junction Box
Lock Nut
Sealing Washer
Ensure that the Standard Weather Protection is in the correct orientation, with the semi-circle of holes at the
bottomasshown.Ifnecessary,unscrewthedetectoralittle,and/orremovetheWeatherProtectionand
rotateitthrough180°tothecorrectorientation.ForM25versions,ensurethatthenylonwasherremains
compressed to maintain the IP rating.
3. Mechanical Installation

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5. FittheSunshade/Delugeprotection.
TheSunshade/DelugeprotectionshouldbeclampedaroundthebaseoftheStandardWeatherProtection
with the longer overhang extending beyond the Standard Weather Protection. Ensure the clamp does not
cover the gas venting slot of the Standard Weather Protection.
6. Fitapprovedcableglandstothejunctionboxcableentriesasrequiredtomaintainthecerticationand
IP rating.
7. Fit approved blanking plugs to the unused junction box cable entries as required to maintain the
 certicationandIPrating.
8. Fittheexternaleldwiringthroughthecableglandsandsecure.
9. TerminatethegasdetectorandeldwiringinaccordancewithChapter4(ElectricalInstallation).
10.Replace the junction box lid.
3.2.2 Installation with a ow housing (sampling system)
6mm o/d
Outlet
Inlet
Sampling systems should be designed to comply with the Searchpoint Optima Plus operating conditions,
for example, sample temperature, cleanliness, water content, dust content etc.
Inaddition,considerthefollowingpoints:-
1. Flow rate should be between 0.7 litres per minute and 2 litres per minute.
2. Aowfailureindicatorshouldbeincludedinthesystem.
3. If possible, use negative pressure to avoid the risk of pressurisation affecting the gas reading.
4. The choice of sampling lines should be appropriate to the application.
3. Mechanical Installation