Bronkhorst FLOW-SMS Series Manual do Utilizador descarregar pdf (Página 6)

BRONKHORST HIGH-TECH B.V.

2 Starting up

2.1 Check properties

9.17.057 page 6

BeforeinstallingaFLOW‐SMSsystemitisimportantto

readtheattachedlabelsandcheck:

‐Flowrates/Pressurerate(s)

‐Fluidstobemeasured

‐Up‐anddownstreampressures

‐Input/outputsignal

‐Temperature



input/output

A–0…5Vdc

B–0…10Vdc

F–0…20mA

G–4…20mA

CheckifthesealingmateriallikeO‐rings,plungerandpackingglandofcapillaryaresuitableforthe

usedgasandprocess.TheFlowmoduleisfittedwithViton,EPDMorKalrezseals.Whichsealing

materialisusedisshowninthelastcharacterofthemodelkey.TherestofFLOW‐SMSsystemalso

containssealings,whichareselectedbasedonthefluidflowschematicdiagram.

2.2 Rated pressure test inspection

EachFLOW‐SMSsystemispressuretestedtoatleast1.5times

theworkingpressureoftheprocessconditionsstipulatedbythecustomer,

withaminimumof8bar.

PressureTestingSticker

Eachinstrumentisheliumleaktestedtoatleast2



10‐9mbarl/sHelium

outboard.

2.3 Check piping

Forreliablemeasurementalwaysmakesurethefluidstreamisclean.

Usefilterstoassureamoisture‐,oil‐andparticle‐freegasstream.

Recommendedpore‐size:7µm.

Ifbackflowcanoccur,adownstreamfilterandacheckvalveare

recommendedtoo.

ForparticlefilteringtheFLOW‐SMSprogramofferssinteredfiltermodules

withporosities0.5,2,7,and15micron

ThetestedpressureisstatedontheinstrumentwithaREDCOLOUREDsticker.Beforeinstallation,

makesurethatthetestpressureisinaccordancewithnormalsafetyfactorsforyourapplication.

IfthereisnoPressureTestingStickeronthedeviceorifthetestpressureisincorrect,theinstrument

shouldnotbemountedintheprocesslineandbereturnedtothefactory.

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