Fluke 5616 User Manual Download Page 13

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temperature increases, even if the seal is not broken. When the insulation resis-
tance becomes sufficiently low, performance suffers. A good rule of thumb is
that the transition junction is too hot when it is hot enough to burn your thumb.

5616 PRT

User’s Guide

Summary of Contents for 5616

Page 1: ...5616 Platinum Resistance Thermometer User s Guide Rev 780801 Hart Scientific ...

Page 2: ... center within the warranty period To obtain warranty service contact your nearest Hart authorized service center or send the product with a description of the difficulty postage and insurance prepaid FOB Destination to the nearest Hart au thorized service center Hart assumes no risk for damage in transit Following warranty repair the prod uct will be returned to Buyer transportation prepaid FOB D...

Page 3: ... Introduction 5 2 1 General 5 2 2 Recalibration 5 3 Specifications 7 4 Installation 9 4 1 Lead Wire Identification 9 5 PRT Care and Handling Guidelines 11 5 1 PRT Care 11 5 2 PRT Handling Guidelines 11 6 Operation 13 6 1 General 13 6 2 Immersion Requirements 13 6 3 Thermal EMF 13 6 4 Transition Junction 13 7 Troubleshooting 15 7 1 Troubleshooting 15 i ...

Page 4: ...or in this guide Symbol Description AC Alternating Current AC DC Battery CE Complies with European Union Directives DC Double Insulated Electric Shock Fuse PE Ground Hot Surface Burn Hazard Read the User s Manual Important Information Off On Canadian Standards Association 1 1 Before You Start Symbols Used Table 1 International Electrical Symbols ...

Page 5: ...and actions that may damage the instrument be ing used 1 2 1 Warnings To avoid personal injury follow these guidelines DO NOT use this instrument to measure the temperature of any hazardous live component Use of this instrument at high temperatures for extended periods of time can cause the handle to become hot Follow all safety guidelines listed in the user s guide Calibration Equipment should on...

Page 6: ...com Fluke Nederland B V Customer Support Services Science Park Eindhoven 5108 5692 EC Son NETHERLANDS Phone 31 402 675300 Telefax 31 402 675321 E mail ServiceDeskfluke nl Fluke Int l Corporation Service Center Instrimpex Room 2301 Sciteck Tower 22 Jianguomenwai Dajie Chao Yang District Beijing 100004 PRC CHINA Phone 86 10 6 512 3436 Telefax 86 10 6 512 3437 E mail xingye hanfluke com cn Fluke Sout...

Page 7: ...GAPORE Phone 65 6799 5588 Telefax 65 6799 5588 E mail antngsinga fluke com When contacting these Service Centers for support please have the following information available Model Number Serial Number Complete description of the problem 5616 PRT User s Guide 4 ...

Page 8: ...according to the user s company Quality Assurance requirements Normally a PRT is recalibrated an nually Unless the PRT is used only over a limited range calibration over the full range of the PRT is recommended For information on recalibrating your 5616 contact an Authorized Service Center for an RMA number and current pricing see Section 1 3 Authorized Service Centers Depending on the user s Qual...

Page 9: ... 5 5 mK error 102 mm 4 0 in Maximum immersion length 254 mm 10 in Response time 5 8 seconds typical Self heating in 0 C bath 60 mW C Lead wire cable type Teflon jacketed cable Teflon insulated conductors 24 AWG stranded silver plated copper Lead wire length 182 9 cm 2 5 cm 72 0 in 1 0 in Lead wire temperature range 50 C to 150 C Calibration NIST traceable calibration 1 Accuracy is a difficult term...

Page 10: ...ancel lead wire resistance For best results the readout de vice should be equipped to handle four terminal resistors The lead wires are two different colors Lead wire pairs attached to each end of the sensor are identified by red and white insulation 9 4 Installation Lead Wire Identification White Red White Red Figure 1 PRT Schematic ...

Page 11: ...omfortably slip in and out without excess movement For best results immerse the thermometer as deep as possible to avoid stem effect the temperature error caused by the conduction of heat away from the sensor DO allow sufficient time for the thermometer to stabilize before making measurements This allows for the best accuracy DO use the correct drive current with the thermometer to prevent error i...

Page 12: ...ations in chemical structure due to impurities can contribute to thermal EMF Also discrepancies in crystal structure can contribute to thermal EMF These factors are minimized by annealing the full length of wire before construction of the PRT Likewise connection to extension lead wires and readout instruments can be a source of thermal EMF The thermal EMF is caused by a difference in tempera ture ...

Page 13: ... the seal is not broken When the insulation resis tance becomes sufficiently low performance suffers A good rule of thumb is that the transition junction is too hot when it is hot enough to burn your thumb 5616 PRT User s Guide 14 ...

Page 14: ...er see Section 1 3 If the data is unstable at high temperatures it may be due to electrical noise in the system Reduce the tem perature and observe the data If it is stable electrical noise is interfering with the measurements at high tem peratures Also this is usually due to low shunt resis tance The resistance between the leads and the sheath shunt resistance or insulation resistance as measured...

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