5626/5628Platinum Resistance ThermometerUser’ s GuideRev. 532801Hart Scientific
Phone: +86-10-6-512-3436Telefax: +86-10-6-512-3437E-mail: [email protected] South East Asia Pte Ltd.Fluke ASEAN Regional OfficeService Cent
2 Introduction2.1 GeneralThe Hart Platinum Resistance Thermometers (PRT) models 5626 and 5628,are designed to be the best secondary standard interpola
calibrated using a primary standard that has been calibrated in a primarycalibration laboratory using known intrinsic values.2.3 CalibrationIn order f
3 Specifications and Warranty3.1 SpecificationsSee Table 2 and Figure 2.73Specifications and Warranty5626 5628Temperature Range –200°C to 661°CRtp100Ω
3.2 ConstructionThe Model 5626 and 5628 PRTs cover the range from –200°C to 661°C. Thesensor elements are crafted using high purity platinum wire woun
4 Installation4.1 Environmental IssuesIdeally, temperature calibration equipment should be used in a calibrationlaboratory or other facility specifica
5 PRT Care and HandlingGuidelines5.1 PRT CareCAUTION: READ THIS SECTION BEFORE REMOVING THE PRTFROM THE SHIPPING BOX OR CASEThe 5626 and 5628 Platinum
•DO allow sufficient time for the thermometer to stabilize before makingmeasurements. This allows for the best accuracy.•DO use the correct drive curr
6 Operation6.1 GeneralFor best results, be familiar with the operation of the heat source and theread-outinstrument.Besuretofollowthe manufacturer’s i
6.4 Thermal EMFTwo factors contribute to thermal EMF, chemical consistency and physicalconsistency. Variations in chemical structure due to impurities
Rev. 532801Fluke Hart Scientific • 799 E. Utah Valley Drive • American Fork, UT 84003-9775 • USAPhone: +1.801.763.1600 • Telefax: +1.801.763.1010 • E-
7 Accessories7.1 Case OptionsThe 5626/5628 PRT comes in a rigid case appropriate for the length of theprobe.•Model Number 2601 PRT Protective Case for
8 Troubleshooting8.1 TroubleshootingIn the event that the probe appears to function abnormally, this section maybe of use in solving the problem. Seve
Problem Causes and SolutionsTemperature readout differ-ent than expected, e.g. theheat source is set at 300°C,the PRT measures 275°C.•Measure the PRT
Table of Contents1 Before You Start . . . . . . . . . . . . . . . . . . . . . . 11.1 Symbols Used . . . . . . . . . . .
7.1 Case Options . . . . . . . . . . . . . . . . . . . . . . . . . 157.2 PRT Termination . . . . . . . . . . . . .
iiiFiguresFigure 1 Hart Model 5626 and 5628 Platinum Resistance Thermometers. . . . . . 5Figure 2 Standard Dimensions. . . . . . . . . .
ivTablesTable 1 International Electrical Symbols . . . . . . . . . . . . . . . . . . . . . . 1Table 2 Specifications. . . . .
1 Before You Start1.1 Symbols UsedTable 1 lists the International Electrical Symbols. Some or all of these sym-bols may be used on the instrument or i
Symbol DescriptionCanadian Standards AssociationOVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 perI E C1010-1 refers to the level of Impul
•DO NOT drop or bang the probe in any way. This will cause damage tothe probe internally and affect its calibration.•Read Section 5 entitled “PRT Care
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