Jiskoot Isofraction
2
ISO8943 (2007) compliant Accuracy better than +/-0.15% Insensitive to pressure changes Fully automated system No manual set-up Compact system IsoFraction LNG Sampler Jiskoot has developed the IsoFraction ™ automatic sampling system for LNG applications, to overcome the problems associated with traditional LNG sampling and GC feed systems. Low uncertainty Operators report a significant improvement in uncertainty achieved typically better than +/-0.15%. Unaffected by pressure and flow rate The IsoFraction ™ system is designed to be unaffected by changes in line pressure or flow rate. Fully automatic The system does not need any operator set up or intervention, minimising the risk of operator induced errors. Representative samples Jiskoot uses its grab sampler and CPC technology to produce representative samples suitable for custody transfer. ™
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Transcript of Jiskoot Isofraction
ISO8943 (2007) compliant
Accuracy better than +/-0.15%
Insensitive to pressure changes
Fully automated system
No manual set-up
Compact system
IsoFractionLNG Sampler
Jiskoot has developed theIsoFraction™ automaticsampling system for LNGapplications, to overcome theproblems associated withtraditional LNG sampling andGC feed systems.
Low uncertaintyOperators report a significantimprovement in uncertaintyachieved typically better than +/-0.15%.
Unaffected by pressure and flow rateThe IsoFraction™ system isdesigned to be unaffected bychanges in line pressure orflow rate.
Fully automaticThe system does not needany operator set up orintervention, minimising therisk of operator inducederrors.
Representative samplesJiskoot uses its grab samplerand CPC technology toproduce representativesamples suitable for custodytransfer.
™
Full integration with gaschromatographsThe system can be used to supply anyonline GC device with a representativefeed.
System reliability and simplicityJiskoot has used its process solvingapproach to produce a reliable androbust system that has lowmaintenance and installation costs.
System overviewThe IsoFraction™ LNG sampling systemcomprises a "gas" sampling system withan integrated vaporisation, stabilisationand control system to ensure controlof the phase change of the LNG to gaswith minimal lag.
The system includes take off points toenable validation and control processfor representivity of GC feed.
Once LNG has been vaporised it ismaintained above the dew point of thecomponent fractions. It then flowsthrough a conventional gas samplerwhere gas samples are extracted into afixed pressure (variable volume piston)sample collection receiver (CPC).
This sampling process providesimprovements over conventionalmethods due to the high volume of gasflowing through the system whichensures representivity of the gas bothsampled, and fed to a GC.
The LNG sampling system willnormally employ three gas samplerstied into a single process loop to allowthree independent but comparablesamples to be taken.In addition, provision is made to allow
the extraction of fixed volume samplesto conventional 500ml receivers at keyintervals (25/50/75/100 %) of thebatch.
These are "spot" samples and requirethe vessels to be purged to ensurerepresentivity of a specific point in thebatch.
The LNG sampling system is designedto enable pre-purging to estimatecontaminents to the sampling process.
3 samples are taken and held in theConstant Pressure Sample Receivers(CPC).The use of fixed pressurereceivers allows minimal atmosphericor cross batch contamination and alarge number of small samples tomaximise batch representivity.
These are standard design specifications.We operate a policy of continuous development and the information on this sheet may be updated without notice. SB-010-0903-3
UKJiskoot Quality Systems
Tel: +44 (0)1892 518000
Fax: +44 (0)1892 518100
Email: [email protected]
USAJiskoot Quality Systems
Tel: +1 281 583 0583
Fax: +1 281 583 0587
Email: [email protected]
Jiskoot Quality SystemsA Cameron Company
www.jiskoot.com
CameronMeasurement Systems
Tel: +1 281 582 9500
Fax: +1 281 582 9599
Email: [email protected] www.c-a-m.com/flo
