Extech RF41 Handleiding


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RF41-en-US_V1.3 3/15
User'sGuide
Battery/CoolantBrix (ATC)Refractometer 
ModelRF41
Introduction
Congratulationson ofyourpurchase thisExtechRefractometer.
Precisionoptical shouldinstruments behandledgently;avoid
touchingtheopticalsurface.Carefuluseoftheseinstrumentswill
provideyearsofreliableservice.
Specifications
Range 0 to‐50ºCPropyleneGlycolfreezepoint
 0 to‐50ºC Ethylene Glycol freeze point
  1.15 to 1.30 specific gravity battery acid
  0 to‐40ºC cleaning fluid freeze point
Resolution1ºC
Dimensions6.3 1.6 1.2" x x(160 40 x x 30mm);
Weight6.4oz.(180g)
Description
1. Eyepiece
2. MirrorTube
3. Adjustmentscrew
4. CoverPlate
5. Prism
Scale
Operation
Thisinstrumentmeasurestherefractiveindexof a sampleand
displaystheresultsinºCorSpecificgravity.
1.ZeroAdjustment
   Cover the prism with a few drops of distilled water. Close the
coverplateandviewthelight/darkboundary(shadowline).If
necessary,turn thetheadjustmentscrewuntil shadowlinealigns
withthescale’szeroline.Thezerocalibrationshouldbe
performedatambienttemperatureandshouldberepeatedevery
30minutesifthe thetemperaturechanges.After zeroadjustment,
cleantheprismwith a softcloth.
2.SamplePreparationandReading
Coverthe theprismwith a few waterdropsofdistilled from 
includedvial. the that theClose coverplateso  liquidspreads
acrosstheentiresurfaceoftheprism   without air bubbles or dry
spots.Allowthesampleto
remainontheprismfor
approximately30seconds.
Whileholdingtheinstrument
under a lightsource,look
throughtheeyepiece.Thebrix
concentrationisdeterminedby
the theintersectionof 
boundaryofthelightanddark
fieldsonthe thescale.If scale
appearsoutoffocus,adjust by rotatingthe theeyepieceuntil 
scaleis in focus.Theinstrumentalsofeaturesaneyeguard to
preventstray eyepiecelightfromenteringthe andcausing
reflections.
Itmaybe necessary adjust to the thepositionof light tosource 
maximizethe thecontrastof shadowline.Undernormal
conditions,optimalcontrastisobtained by holdingtheinstrument
underneath perpendicularand to a lightsource.
Once been (do a readinghas taken,wipedrywith a cleancloth not
washorrinse)andplace suppliedthe theinstrumentin  plastic
case.Storetheinstrumentin a safe,dryenvironment.
3.AutomaticTemperatureCompensation(ATC)
Temperaturecompensationrelievesthe theuserof responsibility
tomeasuretemperatureandapply a correctionfactorwhen
takingreadings.This   refractometer makes this correction
automatically.   When ambient temperature varies from 20°C,
readings are automatically toadjusted compensatefor
temperaturevariancebetween10°Cto30°C.
Warranty
FLIRSystems,Inc.warrantsthisExtechInstrumentsbranddevicetobefreeof
defectsinparts and workmanshipfor oneyear fromdateofshipment(asixmonth
limitedwarrantyappliestosensorsandcables).Ifitshouldbecomenecessaryto
returntheinstrumentforserviceduringorbeyondthewarrantyperiod,contact
the theCustomerServiceDepartment authorization.for Visit website
www.extech.comforcontact  information. A ReturnAuthorization(RA)number
mustbeissuedbeforeanyproductisreturned.Thesenderisresponsiblefor
shippingcharges,freight,insuranceandproperpackagingtopreventdamagein
transit.This applywarrantydoesnot todefects fromresulting actionoftheuser
suchasmisuse,   improper wiring, operation outside of specification, improper
maintenanceor orrepair, unauthorizedmodification.FLIRSystems,Inc.specifically
disclaimsanyimpliedwarranties merchantabilityor orfitnessfor a specific
purposeand bewillnot liableforanydirect,indirect,incidentalorconsequential
damages.FLIR’s liabilitytotal islimitedtorepair or of replacement theproduct.
Thewarrantysetforthaboveisinclusiveandnootherwarranty,whether written 
or ororal,isexpressed implied.
Calibration, CustomerRepair,and Care
Services
FLIRSystems,Inc.offersrepairandcalibrationservices  for the
ExtechInstrumentsproductswesell.NISTcertificationformost
productsisalsoprovided.CalltheCustomerService
Departmentfor forinformationoncalibrationservicesavailable 
thisproduct.Annual becalibrationsshould performedtoverify
meterperformanceand andaccuracy. Technical support 
generalcustomerservice theisalsoprovided,referto contact
informationprovidedbelow.
Copyright ©2013 2015‐ FLIRSystems,Inc.
Allrightsreservedincludingtherightof orreproductioninwhole in inpart any
form
www.extech.com
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Support 439 8324;Lines:U.S.(877) ‐ International:  +1 (603) 324 7800
TechnicalSupport:Option3; ‐E mail:support@extech.com
Repair & Returns:Option4; ‐E mail:repair@extech.com
Productspecificationsaresubjecttochangewithoutnotice
Pleasevisitourwebsiteforthe datemostupto‐ information
www.extech.com
FLIRCommercialSystems,Inc., 9 TownsendWest,Nashua,NH03063 USA
ISO9001Certified


Product specificaties

Merk: Extech
Categorie: Meetapparatuur
Model: RF41

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