APPLICATIONS (EXAMPLES)• OffshoreandOnshoreOilandGasInstallations• PetrochemicalProcessingPlants• GasPipelineCompressorStations• GasStorageFacilities• Hydrogengasleakdetection

FEATURES• Explosionproof,EEXddesign• Instantdetectionofpressurizedgasleaks(fromØ2mm)• Notsensitivetochangingwinddirectionsandgasdilution• Senssonic™selftesttechnologyensuringfailsafeoperation• Advancedmicrophonetechnologyensuringwell-definedandwidedetection

coverage(upto20meterradiusataleakrateof0.1kg/s)• Versatileinterfaceoutputssuchas4-20mAanalogue,alarm/faultrelay,andRS485• FullAISI316Lstainlesssteelenclosureensuringcorrosionresistanceinharsh

environmentalconditions• ATEX,UL/ULC,IECEx,andGGTNK(Kasakhstan)certified

SENSSONIC™ – INTEgRATEd ACOUSTIC INTEgRITy TEST Toeliminatetheriskofun-revealedfailures,GassonicA/ShasdevelopedthepatentedacousticintegritytestSenssonic™.Inintervals,anexternalpiezotransducertransmitsanacoustictestsignaltoverifythatthemicrophoneiswithinthecorrecttolerances.

INTROdUCTIONTheGassonicObserveristhemostadvancedfixedultrasonicgasleakdetector in themarket. It isbasedon robustandprovenmicrophone technology and designed for long and failsafeoperation in extreme environmental conditions. The detectordetects gas leaks by sensing the airborne ultrasound emittedfromleakinggasathighpressure.

Traditionalgasdetectionsystems(infraredandcatalyticpointandopenpathgasdetection)relyonaconcentrationbuildupoftheleakinggastoenabledetection.Thesesystemsworkfairlywellinclosedorindoorinstallations,butinoutdoor,ventilatedareassuchasoffshoreplatforms,manygasleakscangoundetectedforlongperiodsoftime.Theproblemis,thatduetothenatureofthesesystems,thegasneedstobeinphysicalcontactwith

thesensororwithinthepathofaninfraredlightbeambeforeitcanbedetected.Inoutdoorinstallations,thisisverydifficulttoensureas the leakinggasesare rapidlydilutedorblownawaybythewind.

Insteadof”sniffing”thegasandrelyingonanLELconcentrationlevel, the Gassonic Observer instantly detects the distinctultrasonicnoiseemittedbytheleakinggas.Ultrasoundemittedfromagasleakisnotaffectedbythewinddirectionordilutedasisagascloud.ThismakestheGassonicObservertheoptimalchoiceforinstantandreliablefixedgasleakdetectioninoutdoorapplications.

UL

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OR GASSONIC ObSERvER

ULTRASONIC GAS LEAK DETECTOR

gASSONIC A/SEnergivej42ADK-2750BallerupDenmarkTel +4544700910Fax+4544700911mail@gassonic.comwww.gassonic.com

bASIC SpECIfICATIONS fOR ThE GASSONIC ObSERvER

gENERAL dESCRIPTIONDetectortype . . . . . . . . . . . UltrasonicGasLeakDetector forfixedinstallationsSensortechnology . . . . . . . . . SSMicrophonetechnologyAcousticself-test . . . . . . IntegratedSenssonic™technologyDetectorfrequencyrange . . . . . . . . . . . 25kHz–70kHzDynamicrange . . . . . . . . . . . . . . 58dB–104dBSPLResponsetime . . . . . . . . . . . . . . . . . . . . . InstantDetectioncoverage(leakrate0.1kg/s). . . 5-20meterradius

Test sound sourceTestfrequency . . . . . . . . . . . . . . . . . 40kHz±3kHzSoundpressure . . . . . . . . . . . . . 100dB±7dB,60mm fromthesoundsource

CERTIFICATIONS ATEX . . . . . . . . . . . . . . ExII2GEExdeibIIB+H2T6UL/ULC . . . Flameproofenclosure.CLASS1DIV1GroupsBCDIEC . . . . . . . . . . IECExULD06.0010XExdeibIIB+H2T6GGTNK(Kasakhstan). . . . . . . . . . . . . . . PermittouseGOSTR(Russia). . . . . . . . . . . . . . . . . . . . . Pending

ENvIRONMENTAL dATA Ingressprotection . . . . . . . . . . . . . . . . . . . . . IP66Operationaltemperaturerange . . . . . . . . . -40°Cto60°CHumidity . . . . . . . . . . . . . 0to100%relativehumidity

POwER REqUIREMENTS Inputvoltage . . . . . . . . . . . . . . . . . . . 15–30VDCMaximumcurrentconsumption . . . . . . . . . . . . 250mA

OUTPUT SIgNALS Analogue interface0mA . . . . . . . . . . . . . . Nopower/Lowsupplyvoltage1mA . . . . . . . . . . . . . . . . . . . . . . Acousticerror3mA . . . . . . . . . . . . . . . . . . . . . . . . Unitinhibit4–20mA . . . . . . . . . . . . . . . . 58dB–104dBSPL

Relay1 . . . . . . . . . . . . . . . . . . Error/faultindicationRelay2 . . . . . . . . . . . . . IndicationofalarmtriggerlevelDigitalinterface . . . . . . . . RS485halfduplexaddressable.

RF EMISSION ANd IMMUNITy Tested according to Generalelectricalsafety. . . . . . . . . . . . . . . EN61010-1RFemission . . . . . . . . . . . . . . . . . . . EN61000-6-4RFimmunity . . . . . . . . . . . . . . . . . . . EN61000-6-2

MTBF GB(GroundBenign) . . . . . . . . 477167hoursor54yearsGF(GroundFixed) . . . . . . . . . . 148019hoursor17yearsNS(NavalSheltered). . . . . . . . . 92301hoursor11years

dIMENSIONS Ø202x189mm(7.95x7.44in)Twogland/conduitentries:M20x1.5

CONSTRUCTION StainlesssteelAISI316LWeight:7.5Kg

PATENT PatentedinEuropePatentpendingintheU.S.

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INSTALL ATION pRAC TICE

MAINTENANCE TheGassonicObserverispracticallymaintenancefreeanddoesnotrequireregularcalibration.However,mostplantregulationsrequireregulartestsoftheequipment.TheGassonic1701isacustomizedportabletestandcalibrationunit,whichcanbeusedforonsitetestingandcalibrationoftheGassonicdetectors.Besides,theintegratedSenssonic™self-testtechnologywillindicateifthemicrophonesensorstatusisincorrect.

FEATURE gassonic MM0100 gassonic Surveyor gassonic Observer

design philosophy EEXi EEXi EEXd

Hazardous area certification ATEX,UL/ULC ATEX,IECEx ATEX,UL/ULC,IECEx,GGTN

Acoustic self-test (Senssonic™) 3

digital communication RS485 3

Interface 4 – 20 mA 3 3

Interface: Fault relay 3 3

Interface: Alarm relay 3 3 3

Alarm trigger level steps 10dB 5dB 5dB

Internal alarm delay setting15,30,60,120,240,480

sec.0to150sec.

in10sec.steps0to600sec.

in10sec.steps

User interface LEDindications Fullinteractivedisplay

Cable connectionFixed6metres

flyingleadcableIntegratedcable

connectioncompartmentIntegratedcable

connectioncompartment

detector set up Internal Internal External

Coverage @ 0.1 kg/sec 5-20metres 5-20metres 5-20metres

Field testing (w/ gassonic 1701) 3 3 3

Field calibration (w/ gassonic 1701) 3 3

dynamic range 44-104dB 44-104dB 58-104dB

MaterialFiberglas

reinforcedduroplasticStainlesssteel Stainlesssteel

Temperature range -40to+55 -40to+75 -40to+60

GASSONIC pRODUCT RANGE – COmpARISON Of ULTRASONIC GAS LEAK DETEC TOR mODELS

SAFEAREA

DCS/SCADAorPLC

HAzARDOUSAREA

TheGassonicObservercanbeinstalledonitsownorinconjunctionwithotherdetectionequipment.Thedetectorcanbeconnecteddirectlytotheplantcontrolsystem(DCS,PL/PLC,Fire&Gas,SCADA).Thisisillustratedbelow.TheGassonicObserverisexplosionproofbydesignanddoesthereforenotrequirecurrentlimitingsafetybarriers.Itcanbeinstalledina3-wireconfigurationasaminimum.

ORDERING INfORmATION

ACCESSORIESPortabletestandcalibrationunit:Gassonic1701Magnetstick:UC5352Mountingbracket:UA1352AWindscreen:DS0592ATorquewrench:Ez1000

FIELd REPLACEABLE SPAREPARTSSparemicrophone:MM4190Sparetransducertower:UD0131

CONSULTINg SERvICESOnsitesoundmappingsurveyanddetectorallocationOnsitecommissioningandpersonneltraining

TheGassonicObserverwillensuregasleakdetectionatthespeedofsound.Thedetectordoesnotneedgastoaccumulateorcomeintophysicalcontactwiththedetector.Asaconsequence,itmayreduceriskandpreventhazardsfromescalatingintocatastrophicscenarios.TheGassonicObserverisafailsafeultrasonicgasleakdetectorwithintegratedSenssonic™self-testtechnologytoavoidun-revealedfailuresfromoccurring.Thisadvancedultrasonicgasleakdetectorisdesignedforlongandreliableinstallationinextremeenvironmentalconditions.

ThE GASSONIC ObSERvER

4 ROBUST MICROPHONE TECHNOLOgy Themicrophoneisprotectedbyawindscreen.TheGassonicObserverisbasedoncustomizedstainlesssteelmicrophones

designedtowithstandroughhandlingandcorrosiveenvironments.Theyaremanufacturedwiththehighestprecisiontoensuretolerancesoflessthanonemicron.Themicrophonetechnologyhasdemonstratedextraordinarylongtermstabilityinallweatherconditions.Thisconclusionisbasedonmorethan10yearsoffieldexperienceswithinstallationofGassonicdetectorsinenvironmentallychallengingsurroundings,includinginstallationsinremotedesertareas(Oman)andArcticlocations(Russia).Themicrophoneisprotectedbyawindscreen.

dETECTION COvERAgETheGassonicObserverwill instantlyraiseanalarmwhenitpicksupthenoisegeneratedbyleakingpressurizedgas.TheGassonicObserverwillnotwaitforthegastoaccumulateintoapotentiallydangerouscloud,butreactsimmediatelyuponagasrelease.

UnlikeothergasdetectiontechnologiestheGassonicObserverofferstheabilitytocalculatethedetectioncoverage.WhencalculatingthecoverageoftheGassonicObserver,threefactorsmustbeconsidered:1)Leaksize2)Gaspressure3)Ultrasonicbackgroundnoiselevel

gAS LEAk RATEThegasleakrateisanindicatoroftheamountofgasthatwillescapethroughaleak.Thisisveryimportantasitisameasureofhowrapidlyapotentiallydangerousgascloudwillaccumulatefromtheleak.Thegasleakrateisinfluencedbytheleaksizeandthegaspressure.Forahydrocarbongasleak,0.1kg/sistypicallyusedastheperformancestandardforleakdetection.Thisisconsideredasmallleak.

ULTRASONIC BACkgROUNd NOISE LEvELThe Gassonic Observer filters out low-frequency background noisebelow25kHz.However,afewnoisesourcesmaygenerateultrasonic

noise above 25 kHz. To prevent this from triggering the detector, abackgroundnoisesurveyof theplantshouldbeperformedusinganultrasonicmappingmeter.

Abackgroundnoisesurveymakesitpossibletoadjustthesensitivityoftheindividualdetectorensuringthatitisnotaffectedbytheultrasonicbackgroundnoiseintheareaitiscovering.

COMMISSIONINg ANd vERIFICATIONDuringcommissioning realgas leaksimulationcanbeperformedtoverify theactualdetectioncoveragearea. This isdonebymeansofnitrogengas.

COvERAgE CHARACTERISTICSThedetectioncoverageoftheGassonicObserverisdeterminedbytheultrasonicnoiselevelsintheareaofinstallation.Experiencehasshownthatmostprocessenvironmentscanbedividedintothreeoverallnoiselevels.Thisisillustratedintheimageonthenextpage.

The detection coverage characteristics are based on live tests andshow the minimum coverage of the Gassonic Observer detector inareaswithoutsolidphysicalobstructionsbetweenthedetectorandtheleak.GassonicA/Scanbeconsultedonfurtherinstructionsrelatedtoinstallation.

DETEC TION COvERAGE ChARAC TERISTICS

HIgH-NOISE AREAS

LOw-NOISE AREAS

vERy LOw-NOISE AREAS

HIgH-NOISE AREASIn”high-noiseareas”(backgroundnoise<78dB),thetriggerlevelmustbesetat84dB.Thiscorrespondstoadetectionradiusof5-8metres.

Typical areas:•Turbocompressorareas•Completelyopenoffshoreweatherdeck•Nexttoverynoisymachinery

LOw-NOISE AREASIn”low-noiseareas”(backgroundnoise<68dB),thetriggerlevelmustbesetat74dB.Thiscorrespondstoadetectionradiusof9-12metres.

Typical areas:•Areaswithnomachinery•Areaswithlowfrequencymachinemadenoise

vERy LOw-NOISE AREASIn”verylow-noiseareas”(backgroundnoise<58dB),thetriggerlevelmustbesetat64dB.Thiscorrespondstoadetectionradiusof13-20metres.

Typical areas:•Onshorewellheadareasincalmenvironment•Saltdomegasstoragefacilitiesincalmenvironment

1

1 ELECTRICAL INTERFACES •Analogue4–20mAforreal-timereadoutofultrasonicsoundlevelanderror/faultconditions •DigitalRS485interfacewithfulltwo-wayaddressablecommunication •Separatealarmrelayandfault/errorrelayoutput

3 INTEgRATEd INTERACTIvE dISPLAy •Real-timereadoutofultrasonicsoundlevel •Readoutofalarmanderrorconditions •Externallyoperatedwithmagnetstickfordetectorset-upinEEXhazardousareas

5 INTEgRATEd CABLE TERMINATION Integratedcabletermination.Noextrajunctionboxneeded.

2 SENSSONIC™ ACOUSTIC INTEgRITy TEST Senssonic™integratedacousticintegritytestforcontinuousself-testofthedetector.Inintervalsthetest

soundsourceemitsanacoustictestsignal,whichispickedupbythemicrophoneandverifiedbythedetector.Ifthetestsignalfails,anerrorwillberaisedinthedetector’selectricalinterfaces.Senssonic™istheonlytechnologytoensureregularself-testwithinwell-definedtolerances.

3

5

4

2

TheGassonicObserverwillensuregasleakdetectionatthespeedofsound.Thedetectordoesnotneedgastoaccumulateorcomeintophysicalcontactwiththedetector.Asaconsequence,itmayreduceriskandpreventhazardsfromescalatingintocatastrophicscenarios.TheGassonicObserverisafailsafeultrasonicgasleakdetectorwithintegratedSenssonic™self-testtechnologytoavoidun-revealedfailuresfromoccurring.Thisadvancedultrasonicgasleakdetectorisdesignedforlongandreliableinstallationinextremeenvironmentalconditions.

ThE GASSONIC ObSERvER

4 ROBUST MICROPHONE TECHNOLOgy Themicrophoneisprotectedbyawindscreen.TheGassonicObserverisbasedoncustomizedstainlesssteelmicrophones

designedtowithstandroughhandlingandcorrosiveenvironments.Theyaremanufacturedwiththehighestprecisiontoensuretolerancesoflessthanonemicron.Themicrophonetechnologyhasdemonstratedextraordinarylongtermstabilityinallweatherconditions.Thisconclusionisbasedonmorethan10yearsoffieldexperienceswithinstallationofGassonicdetectorsinenvironmentallychallengingsurroundings,includinginstallationsinremotedesertareas(Oman)andArcticlocations(Russia).Themicrophoneisprotectedbyawindscreen.

dETECTION COvERAgETheGassonicObserverwill instantlyraiseanalarmwhenitpicksupthenoisegeneratedbyleakingpressurizedgas.TheGassonicObserverwillnotwaitforthegastoaccumulateintoapotentiallydangerouscloud,butreactsimmediatelyuponagasrelease.

UnlikeothergasdetectiontechnologiestheGassonicObserverofferstheabilitytocalculatethedetectioncoverage.WhencalculatingthecoverageoftheGassonicObserver,threefactorsmustbeconsidered:1)Leaksize2)Gaspressure3)Ultrasonicbackgroundnoiselevel

gAS LEAk RATEThegasleakrateisanindicatoroftheamountofgasthatwillescapethroughaleak.Thisisveryimportantasitisameasureofhowrapidlyapotentiallydangerousgascloudwillaccumulatefromtheleak.Thegasleakrateisinfluencedbytheleaksizeandthegaspressure.Forahydrocarbongasleak,0.1kg/sistypicallyusedastheperformancestandardforleakdetection.Thisisconsideredasmallleak.

ULTRASONIC BACkgROUNd NOISE LEvELThe Gassonic Observer filters out low-frequency background noisebelow25kHz.However,afewnoisesourcesmaygenerateultrasonic

noise above 25 kHz. To prevent this from triggering the detector, abackgroundnoisesurveyof theplantshouldbeperformedusinganultrasonicmappingmeter.

Abackgroundnoisesurveymakesitpossibletoadjustthesensitivityoftheindividualdetectorensuringthatitisnotaffectedbytheultrasonicbackgroundnoiseintheareaitiscovering.

COMMISSIONINg ANd vERIFICATIONDuringcommissioning realgas leaksimulationcanbeperformedtoverify theactualdetectioncoveragearea. This isdonebymeansofnitrogengas.

COvERAgE CHARACTERISTICSThedetectioncoverageoftheGassonicObserverisdeterminedbytheultrasonicnoiselevelsintheareaofinstallation.Experiencehasshownthatmostprocessenvironmentscanbedividedintothreeoverallnoiselevels.Thisisillustratedintheimageonthenextpage.

The detection coverage characteristics are based on live tests andshow the minimum coverage of the Gassonic Observer detector inareaswithoutsolidphysicalobstructionsbetweenthedetectorandtheleak.GassonicA/Scanbeconsultedonfurtherinstructionsrelatedtoinstallation.

DETEC TION COvERAGE ChARAC TERISTICS

HIgH-NOISE AREAS

LOw-NOISE AREAS

vERy LOw-NOISE AREAS

HIgH-NOISE AREASIn”high-noiseareas”(backgroundnoise<78dB),thetriggerlevelmustbesetat84dB.Thiscorrespondstoadetectionradiusof5-8metres.

Typical areas:•Turbocompressorareas•Completelyopenoffshoreweatherdeck•Nexttoverynoisymachinery

LOw-NOISE AREASIn”low-noiseareas”(backgroundnoise<68dB),thetriggerlevelmustbesetat74dB.Thiscorrespondstoadetectionradiusof9-12metres.

Typical areas:•Areaswithnomachinery•Areaswithlowfrequencymachinemadenoise

vERy LOw-NOISE AREASIn”verylow-noiseareas”(backgroundnoise<58dB),thetriggerlevelmustbesetat64dB.Thiscorrespondstoadetectionradiusof13-20metres.

Typical areas:•Onshorewellheadareasincalmenvironment•Saltdomegasstoragefacilitiesincalmenvironment

1

1 ELECTRICAL INTERFACES •Analogue4–20mAforreal-timereadoutofultrasonicsoundlevelanderror/faultconditions •DigitalRS485interfacewithfulltwo-wayaddressablecommunication •Separatealarmrelayandfault/errorrelayoutput

3 INTEgRATEd INTERACTIvE dISPLAy •Real-timereadoutofultrasonicsoundlevel •Readoutofalarmanderrorconditions •Externallyoperatedwithmagnetstickfordetectorset-upinEEXhazardousareas

5 INTEgRATEd CABLE TERMINATION Integratedcabletermination.Noextrajunctionboxneeded.

2 SENSSONIC™ ACOUSTIC INTEgRITy TEST Senssonic™integratedacousticintegritytestforcontinuousself-testofthedetector.Inintervalsthetest

soundsourceemitsanacoustictestsignal,whichispickedupbythemicrophoneandverifiedbythedetector.Ifthetestsignalfails,anerrorwillberaisedinthedetector’selectricalinterfaces.Senssonic™istheonlytechnologytoensureregularself-testwithinwell-definedtolerances.

3

5

4

2

TheGassonicObserverwillensuregasleakdetectionatthespeedofsound.Thedetectordoesnotneedgastoaccumulateorcomeintophysicalcontactwiththedetector.Asaconsequence,itmayreduceriskandpreventhazardsfromescalatingintocatastrophicscenarios.TheGassonicObserverisafailsafeultrasonicgasleakdetectorwithintegratedSenssonic™self-testtechnologytoavoidun-revealedfailuresfromoccurring.Thisadvancedultrasonicgasleakdetectorisdesignedforlongandreliableinstallationinextremeenvironmentalconditions.

ThE GASSONIC ObSERvER

4 ROBUST MICROPHONE TECHNOLOgy Themicrophoneisprotectedbyawindscreen.TheGassonicObserverisbasedoncustomizedstainlesssteelmicrophones

designedtowithstandroughhandlingandcorrosiveenvironments.Theyaremanufacturedwiththehighestprecisiontoensuretolerancesoflessthanonemicron.Themicrophonetechnologyhasdemonstratedextraordinarylongtermstabilityinallweatherconditions.Thisconclusionisbasedonmorethan10yearsoffieldexperienceswithinstallationofGassonicdetectorsinenvironmentallychallengingsurroundings,includinginstallationsinremotedesertareas(Oman)andArcticlocations(Russia).Themicrophoneisprotectedbyawindscreen.

dETECTION COvERAgETheGassonicObserverwill instantlyraiseanalarmwhenitpicksupthenoisegeneratedbyleakingpressurizedgas.TheGassonicObserverwillnotwaitforthegastoaccumulateintoapotentiallydangerouscloud,butreactsimmediatelyuponagasrelease.

UnlikeothergasdetectiontechnologiestheGassonicObserverofferstheabilitytocalculatethedetectioncoverage.WhencalculatingthecoverageoftheGassonicObserver,threefactorsmustbeconsidered:1)Leaksize2)Gaspressure3)Ultrasonicbackgroundnoiselevel

gAS LEAk RATEThegasleakrateisanindicatoroftheamountofgasthatwillescapethroughaleak.Thisisveryimportantasitisameasureofhowrapidlyapotentiallydangerousgascloudwillaccumulatefromtheleak.Thegasleakrateisinfluencedbytheleaksizeandthegaspressure.Forahydrocarbongasleak,0.1kg/sistypicallyusedastheperformancestandardforleakdetection.Thisisconsideredasmallleak.

ULTRASONIC BACkgROUNd NOISE LEvELThe Gassonic Observer filters out low-frequency background noisebelow25kHz.However,afewnoisesourcesmaygenerateultrasonic

noise above 25 kHz. To prevent this from triggering the detector, abackgroundnoisesurveyof theplantshouldbeperformedusinganultrasonicmappingmeter.

Abackgroundnoisesurveymakesitpossibletoadjustthesensitivityoftheindividualdetectorensuringthatitisnotaffectedbytheultrasonicbackgroundnoiseintheareaitiscovering.

COMMISSIONINg ANd vERIFICATIONDuringcommissioning realgas leaksimulationcanbeperformedtoverify theactualdetectioncoveragearea. This isdonebymeansofnitrogengas.

COvERAgE CHARACTERISTICSThedetectioncoverageoftheGassonicObserverisdeterminedbytheultrasonicnoiselevelsintheareaofinstallation.Experiencehasshownthatmostprocessenvironmentscanbedividedintothreeoverallnoiselevels.Thisisillustratedintheimageonthenextpage.

The detection coverage characteristics are based on live tests andshow the minimum coverage of the Gassonic Observer detector inareaswithoutsolidphysicalobstructionsbetweenthedetectorandtheleak.GassonicA/Scanbeconsultedonfurtherinstructionsrelatedtoinstallation.

DETEC TION COvERAGE ChARAC TERISTICS

HIgH-NOISE AREAS

LOw-NOISE AREAS

vERy LOw-NOISE AREAS

HIgH-NOISE AREASIn”high-noiseareas”(backgroundnoise<78dB),thetriggerlevelmustbesetat84dB.Thiscorrespondstoadetectionradiusof5-8metres.

Typical areas:•Turbocompressorareas•Completelyopenoffshoreweatherdeck•Nexttoverynoisymachinery

LOw-NOISE AREASIn”low-noiseareas”(backgroundnoise<68dB),thetriggerlevelmustbesetat74dB.Thiscorrespondstoadetectionradiusof9-12metres.

Typical areas:•Areaswithnomachinery•Areaswithlowfrequencymachinemadenoise

vERy LOw-NOISE AREASIn”verylow-noiseareas”(backgroundnoise<58dB),thetriggerlevelmustbesetat64dB.Thiscorrespondstoadetectionradiusof13-20metres.

Typical areas:•Onshorewellheadareasincalmenvironment•Saltdomegasstoragefacilitiesincalmenvironment

1

1 ELECTRICAL INTERFACES •Analogue4–20mAforreal-timereadoutofultrasonicsoundlevelanderror/faultconditions •DigitalRS485interfacewithfulltwo-wayaddressablecommunication •Separatealarmrelayandfault/errorrelayoutput

3 INTEgRATEd INTERACTIvE dISPLAy •Real-timereadoutofultrasonicsoundlevel •Readoutofalarmanderrorconditions •Externallyoperatedwithmagnetstickfordetectorset-upinEEXhazardousareas

5 INTEgRATEd CABLE TERMINATION Integratedcabletermination.Noextrajunctionboxneeded.

2 SENSSONIC™ ACOUSTIC INTEgRITy TEST Senssonic™integratedacousticintegritytestforcontinuousself-testofthedetector.Inintervalsthetest

soundsourceemitsanacoustictestsignal,whichispickedupbythemicrophoneandverifiedbythedetector.Ifthetestsignalfails,anerrorwillberaisedinthedetector’selectricalinterfaces.Senssonic™istheonlytechnologytoensureregularself-testwithinwell-definedtolerances.

3

5

4

2

APPLICATIONS (EXAMPLES)• OffshoreandOnshoreOilandGasInstallations• PetrochemicalProcessingPlants• GasPipelineCompressorStations• GasStorageFacilities• Hydrogengasleakdetection

FEATURES• Explosionproof,EEXddesign• Instantdetectionofpressurizedgasleaks(fromØ2mm)• Notsensitivetochangingwinddirectionsandgasdilution• Senssonic™selftesttechnologyensuringfailsafeoperation• Advancedmicrophonetechnologyensuringwell-definedandwidedetection

coverage(upto20meterradiusataleakrateof0.1kg/s)• Versatileinterfaceoutputssuchas4-20mAanalogue,alarm/faultrelay,andRS485• FullAISI316Lstainlesssteelenclosureensuringcorrosionresistanceinharsh

environmentalconditions• ATEX,UL/ULC,IECEx,andGGTNK(Kasakhstan)certified

SENSSONIC™ – INTEgRATEd ACOUSTIC INTEgRITy TEST Toeliminatetheriskofun-revealedfailures,GassonicA/ShasdevelopedthepatentedacousticintegritytestSenssonic™.Inintervals,anexternalpiezotransducertransmitsanacoustictestsignaltoverifythatthemicrophoneiswithinthecorrecttolerances.

INTROdUCTIONTheGassonicObserveristhemostadvancedfixedultrasonicgasleakdetector in themarket. It isbasedon robustandprovenmicrophone technology and designed for long and failsafeoperation in extreme environmental conditions. The detectordetects gas leaks by sensing the airborne ultrasound emittedfromleakinggasathighpressure.

Traditionalgasdetectionsystems(infraredandcatalyticpointandopenpathgasdetection)relyonaconcentrationbuildupoftheleakinggastoenabledetection.Thesesystemsworkfairlywellinclosedorindoorinstallations,butinoutdoor,ventilatedareassuchasoffshoreplatforms,manygasleakscangoundetectedforlongperiodsoftime.Theproblemis,thatduetothenatureofthesesystems,thegasneedstobeinphysicalcontactwith

thesensororwithinthepathofaninfraredlightbeambeforeitcanbedetected.Inoutdoorinstallations,thisisverydifficulttoensureas the leakinggasesare rapidlydilutedorblownawaybythewind.

Insteadof”sniffing”thegasandrelyingonanLELconcentrationlevel, the Gassonic Observer instantly detects the distinctultrasonicnoiseemittedbytheleakinggas.Ultrasoundemittedfromagasleakisnotaffectedbythewinddirectionordilutedasisagascloud.ThismakestheGassonicObservertheoptimalchoiceforinstantandreliablefixedgasleakdetectioninoutdoorapplications.

UL

TR

AS

ON

IC

G

AS

L

EA

K

DE

TE

CT

OR GASSONIC ObSERvER

ULTRASONIC GAS LEAK DETECTOR

gASSONIC A/SEnergivej42ADK-2750BallerupDenmarkTel +4544700910Fax+4544700911mail@gassonic.comwww.gassonic.com

bASIC SpECIfICATIONS fOR ThE GASSONIC ObSERvER

gENERAL dESCRIPTIONDetectortype . . . . . . . . . . . UltrasonicGasLeakDetector forfixedinstallationsSensortechnology . . . . . . . . . SSMicrophonetechnologyAcousticself-test . . . . . . IntegratedSenssonic™technologyDetectorfrequencyrange . . . . . . . . . . . 25kHz–70kHzDynamicrange . . . . . . . . . . . . . . 58dB–104dBSPLResponsetime . . . . . . . . . . . . . . . . . . . . . InstantDetectioncoverage(leakrate0.1kg/s). . . 5-20meterradius

Test sound sourceTestfrequency . . . . . . . . . . . . . . . . . 40kHz±3kHzSoundpressure . . . . . . . . . . . . . 100dB±7dB,60mm fromthesoundsource

CERTIFICATIONS ATEX . . . . . . . . . . . . . . ExII2GEExdeibIIB+H2T6UL/ULC . . . Flameproofenclosure.CLASS1DIV1GroupsBCDIEC . . . . . . . . . . IECExULD06.0010XExdeibIIB+H2T6GGTNK(Kasakhstan). . . . . . . . . . . . . . . PermittouseGOSTR(Russia). . . . . . . . . . . . . . . . . . . . . Pending

ENvIRONMENTAL dATA Ingressprotection . . . . . . . . . . . . . . . . . . . . . IP66Operationaltemperaturerange . . . . . . . . . -40°Cto60°CHumidity . . . . . . . . . . . . . 0to100%relativehumidity

POwER REqUIREMENTS Inputvoltage . . . . . . . . . . . . . . . . . . . 15–30VDCMaximumcurrentconsumption . . . . . . . . . . . . 250mA

OUTPUT SIgNALS Analogue interface0mA . . . . . . . . . . . . . . Nopower/Lowsupplyvoltage1mA . . . . . . . . . . . . . . . . . . . . . . Acousticerror3mA . . . . . . . . . . . . . . . . . . . . . . . . Unitinhibit4–20mA . . . . . . . . . . . . . . . . 58dB–104dBSPL

Relay1 . . . . . . . . . . . . . . . . . . Error/faultindicationRelay2 . . . . . . . . . . . . . IndicationofalarmtriggerlevelDigitalinterface . . . . . . . . RS485halfduplexaddressable.

RF EMISSION ANd IMMUNITy Tested according to Generalelectricalsafety. . . . . . . . . . . . . . . EN61010-1RFemission . . . . . . . . . . . . . . . . . . . EN61000-6-4RFimmunity . . . . . . . . . . . . . . . . . . . EN61000-6-2

MTBF GB(GroundBenign) . . . . . . . . 477167hoursor54yearsGF(GroundFixed) . . . . . . . . . . 148019hoursor17yearsNS(NavalSheltered). . . . . . . . . 92301hoursor11years

dIMENSIONS Ø202x189mm(7.95x7.44in)Twogland/conduitentries:M20x1.5

CONSTRUCTION StainlesssteelAISI316LWeight:7.5Kg

PATENT PatentedinEuropePatentpendingintheU.S.

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Ø202mm

189

mm

INSTALL ATION pRAC TICE

MAINTENANCE TheGassonicObserverispracticallymaintenancefreeanddoesnotrequireregularcalibration.However,mostplantregulationsrequireregulartestsoftheequipment.TheGassonic1701isacustomizedportabletestandcalibrationunit,whichcanbeusedforonsitetestingandcalibrationoftheGassonicdetectors.Besides,theintegratedSenssonic™self-testtechnologywillindicateifthemicrophonesensorstatusisincorrect.

FEATURE gassonic MM0100 gassonic Surveyor gassonic Observer

design philosophy EEXi EEXi EEXd

Hazardous area certification ATEX,UL/ULC ATEX,IECEx ATEX,UL/ULC,IECEx,GGTN

Acoustic self-test (Senssonic™) 3

digital communication RS485 3

Interface 4 – 20 mA 3 3

Interface: Fault relay 3 3

Interface: Alarm relay 3 3 3

Alarm trigger level steps 10dB 5dB 5dB

Internal alarm delay setting15,30,60,120,240,480

sec.0to150sec.

in10sec.steps0to600sec.

in10sec.steps

User interface LEDindications Fullinteractivedisplay

Cable connectionFixed6metres

flyingleadcableIntegratedcable

connectioncompartmentIntegratedcable

connectioncompartment

detector set up Internal Internal External

Coverage @ 0.1 kg/sec 5-20metres 5-20metres 5-20metres

Field testing (w/ gassonic 1701) 3 3 3

Field calibration (w/ gassonic 1701) 3 3

dynamic range 44-104dB 44-104dB 58-104dB

MaterialFiberglas

reinforcedduroplasticStainlesssteel Stainlesssteel

Temperature range -40to+55 -40to+75 -40to+60

GASSONIC pRODUCT RANGE – COmpARISON Of ULTRASONIC GAS LEAK DETEC TOR mODELS

SAFEAREA

DCS/SCADAorPLC

HAzARDOUSAREA

TheGassonicObservercanbeinstalledonitsownorinconjunctionwithotherdetectionequipment.Thedetectorcanbeconnecteddirectlytotheplantcontrolsystem(DCS,PL/PLC,Fire&Gas,SCADA).Thisisillustratedbelow.TheGassonicObserverisexplosionproofbydesignanddoesthereforenotrequirecurrentlimitingsafetybarriers.Itcanbeinstalledina3-wireconfigurationasaminimum.

ORDERING INfORmATION

ACCESSORIESPortabletestandcalibrationunit:Gassonic1701Magnetstick:UC5352Mountingbracket:UA1352AWindscreen:DS0592ATorquewrench:Ez1000

FIELd REPLACEABLE SPAREPARTSSparemicrophone:MM4190Sparetransducertower:UD0131

CONSULTINg SERvICESOnsitesoundmappingsurveyanddetectorallocationOnsitecommissioningandpersonneltraining

APPLICATIONS (EXAMPLES)• OffshoreandOnshoreOilandGasInstallations• PetrochemicalProcessingPlants• GasPipelineCompressorStations• GasStorageFacilities• Hydrogengasleakdetection

FEATURES• Explosionproof,EEXddesign• Instantdetectionofpressurizedgasleaks(fromØ2mm)• Notsensitivetochangingwinddirectionsandgasdilution• Senssonic™selftesttechnologyensuringfailsafeoperation• Advancedmicrophonetechnologyensuringwell-definedandwidedetection

coverage(upto20meterradiusataleakrateof0.1kg/s)• Versatileinterfaceoutputssuchas4-20mAanalogue,alarm/faultrelay,andRS485• FullAISI316Lstainlesssteelenclosureensuringcorrosionresistanceinharsh

environmentalconditions• ATEX,UL/ULC,IECEx,andGGTNK(Kasakhstan)certified

SENSSONIC™ – INTEgRATEd ACOUSTIC INTEgRITy TEST Toeliminatetheriskofun-revealedfailures,GassonicA/ShasdevelopedthepatentedacousticintegritytestSenssonic™.Inintervals,anexternalpiezotransducertransmitsanacoustictestsignaltoverifythatthemicrophoneiswithinthecorrecttolerances.

INTROdUCTIONTheGassonicObserveristhemostadvancedfixedultrasonicgasleakdetector in themarket. It isbasedon robustandprovenmicrophone technology and designed for long and failsafeoperation in extreme environmental conditions. The detectordetects gas leaks by sensing the airborne ultrasound emittedfromleakinggasathighpressure.

Traditionalgasdetectionsystems(infraredandcatalyticpointandopenpathgasdetection)relyonaconcentrationbuildupoftheleakinggastoenabledetection.Thesesystemsworkfairlywellinclosedorindoorinstallations,butinoutdoor,ventilatedareassuchasoffshoreplatforms,manygasleakscangoundetectedforlongperiodsoftime.Theproblemis,thatduetothenatureofthesesystems,thegasneedstobeinphysicalcontactwith

thesensororwithinthepathofaninfraredlightbeambeforeitcanbedetected.Inoutdoorinstallations,thisisverydifficulttoensureas the leakinggasesare rapidlydilutedorblownawaybythewind.

Insteadof”sniffing”thegasandrelyingonanLELconcentrationlevel, the Gassonic Observer instantly detects the distinctultrasonicnoiseemittedbytheleakinggas.Ultrasoundemittedfromagasleakisnotaffectedbythewinddirectionordilutedasisagascloud.ThismakestheGassonicObservertheoptimalchoiceforinstantandreliablefixedgasleakdetectioninoutdoorapplications.

UL

TR

AS

ON

IC

G

AS

L

EA

K

DE

TE

CT

OR GASSONIC ObSERvER

ULTRASONIC GAS LEAK DETECTOR

gASSONIC A/SEnergivej42ADK-2750BallerupDenmarkTel +4544700910Fax+4544700911mail@gassonic.comwww.gassonic.com

bASIC SpECIfICATIONS fOR ThE GASSONIC ObSERvER

gENERAL dESCRIPTIONDetectortype . . . . . . . . . . . UltrasonicGasLeakDetector forfixedinstallationsSensortechnology . . . . . . . . . SSMicrophonetechnologyAcousticself-test . . . . . . IntegratedSenssonic™technologyDetectorfrequencyrange . . . . . . . . . . . 25kHz–70kHzDynamicrange . . . . . . . . . . . . . . 58dB–104dBSPLResponsetime . . . . . . . . . . . . . . . . . . . . . InstantDetectioncoverage(leakrate0.1kg/s). . . 5-20meterradius

Test sound sourceTestfrequency . . . . . . . . . . . . . . . . . 40kHz±3kHzSoundpressure . . . . . . . . . . . . . 100dB±7dB,60mm fromthesoundsource

CERTIFICATIONS ATEX . . . . . . . . . . . . . . ExII2GEExdeibIIB+H2T6UL/ULC . . . Flameproofenclosure.CLASS1DIV1GroupsBCDIEC . . . . . . . . . . IECExULD06.0010XExdeibIIB+H2T6GGTNK(Kasakhstan). . . . . . . . . . . . . . . PermittouseGOSTR(Russia). . . . . . . . . . . . . . . . . . . . . Pending

ENvIRONMENTAL dATA Ingressprotection . . . . . . . . . . . . . . . . . . . . . IP66Operationaltemperaturerange . . . . . . . . . -40°Cto60°CHumidity . . . . . . . . . . . . . 0to100%relativehumidity

POwER REqUIREMENTS Inputvoltage . . . . . . . . . . . . . . . . . . . 15–30VDCMaximumcurrentconsumption . . . . . . . . . . . . 250mA

OUTPUT SIgNALS Analogue interface0mA . . . . . . . . . . . . . . Nopower/Lowsupplyvoltage1mA . . . . . . . . . . . . . . . . . . . . . . Acousticerror3mA . . . . . . . . . . . . . . . . . . . . . . . . Unitinhibit4–20mA . . . . . . . . . . . . . . . . 58dB–104dBSPL

Relay1 . . . . . . . . . . . . . . . . . . Error/faultindicationRelay2 . . . . . . . . . . . . . IndicationofalarmtriggerlevelDigitalinterface . . . . . . . . RS485halfduplexaddressable.

RF EMISSION ANd IMMUNITy Tested according to Generalelectricalsafety. . . . . . . . . . . . . . . EN61010-1RFemission . . . . . . . . . . . . . . . . . . . EN61000-6-4RFimmunity . . . . . . . . . . . . . . . . . . . EN61000-6-2

MTBF GB(GroundBenign) . . . . . . . . 477167hoursor54yearsGF(GroundFixed) . . . . . . . . . . 148019hoursor17yearsNS(NavalSheltered). . . . . . . . . 92301hoursor11years

dIMENSIONS Ø202x189mm(7.95x7.44in)Twogland/conduitentries:M20x1.5

CONSTRUCTION StainlesssteelAISI316LWeight:7.5Kg

PATENT PatentedinEuropePatentpendingintheU.S.

Gass

onic

A/S

rese

rves

the

right

toc

hang

esp

ecifi

catio

nsa

nda

cces

sorie

swith

outn

otic

e.(C

apito

lCop

enha

gen

+45

4580

083

1)·

Obse

rver

:BP2

006

-5

Ø202mm

189

mm

INSTALL ATION pRAC TICE

MAINTENANCE TheGassonicObserverispracticallymaintenancefreeanddoesnotrequireregularcalibration.However,mostplantregulationsrequireregulartestsoftheequipment.TheGassonic1701isacustomizedportabletestandcalibrationunit,whichcanbeusedforonsitetestingandcalibrationoftheGassonicdetectors.Besides,theintegratedSenssonic™self-testtechnologywillindicateifthemicrophonesensorstatusisincorrect.

FEATURE gassonic MM0100 gassonic Surveyor gassonic Observer

design philosophy EEXi EEXi EEXd

Hazardous area certification ATEX,UL/ULC ATEX,IECEx ATEX,UL/ULC,IECEx,GGTN

Acoustic self-test (Senssonic™) 3

digital communication RS485 3

Interface 4 – 20 mA 3 3

Interface: Fault relay 3 3

Interface: Alarm relay 3 3 3

Alarm trigger level steps 10dB 5dB 5dB

Internal alarm delay setting15,30,60,120,240,480

sec.0to150sec.

in10sec.steps0to600sec.

in10sec.steps

User interface LEDindications Fullinteractivedisplay

Cable connectionFixed6metres

flyingleadcableIntegratedcable

connectioncompartmentIntegratedcable

connectioncompartment

detector set up Internal Internal External

Coverage @ 0.1 kg/sec 5-20metres 5-20metres 5-20metres

Field testing (w/ gassonic 1701) 3 3 3

Field calibration (w/ gassonic 1701) 3 3

dynamic range 44-104dB 44-104dB 58-104dB

MaterialFiberglas

reinforcedduroplasticStainlesssteel Stainlesssteel

Temperature range -40to+55 -40to+75 -40to+60

GASSONIC pRODUCT RANGE – COmpARISON Of ULTRASONIC GAS LEAK DETEC TOR mODELS

SAFEAREA

DCS/SCADAorPLC

HAzARDOUSAREA

TheGassonicObservercanbeinstalledonitsownorinconjunctionwithotherdetectionequipment.Thedetectorcanbeconnecteddirectlytotheplantcontrolsystem(DCS,PL/PLC,Fire&Gas,SCADA).Thisisillustratedbelow.TheGassonicObserverisexplosionproofbydesignanddoesthereforenotrequirecurrentlimitingsafetybarriers.Itcanbeinstalledina3-wireconfigurationasaminimum.

ORDERING INfORmATION

ACCESSORIESPortabletestandcalibrationunit:Gassonic1701Magnetstick:UC5352Mountingbracket:UA1352AWindscreen:DS0592ATorquewrench:Ez1000

FIELd REPLACEABLE SPAREPARTSSparemicrophone:MM4190Sparetransducertower:UD0131

CONSULTINg SERvICESOnsitesoundmappingsurveyanddetectorallocationOnsitecommissioningandpersonneltraining