Fluke Calibration 5627A Precision Industrial PRT
Contents
1. Hart Scientific 5627A Platinum Resistance Thermometer User s Guide Rev 741801 Rev 741801 Limited Warranty amp Limitation of Liability Each product from Fluke Corporation Hart Scientific Division Hart is warranted to be free from de fects in material and workmanship under normal use and service The warranty period is 1 year for the Platinum Resistance Thermometer The warranty period begins on the date of the shipment Parts prod uct repairs and services are warranted for 90 days The warranty extends only to the original buyer or end user customer of a Hart authorized reseller and does not apply to fuses disposable batteries or to any other product which in Hart s opinion has been misused altered neglected or damaged by accident or abnormal conditions of operation or handling Hart warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Hart does not warrant that software will be error free or operate without interrup tion Hart does not warrant calibrations on the Platinum Resistance Thermometer Hart authorized resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Hart Warranty support is available if product is purchased through a Hart authorized sales outlet or Buyer has pai2. Care must be taken in handling the PRT to maintain calibration accuracy Care should still be used when handling the PRT even though the Inconel sheath is durable and provides good protection for the sensor Correct handling of the PRT will prolong the life expectancy When not in use the PRT should be stored in an optional protective case that can be purchased by contacting an Au thorized Service Center see section 1 3 Authorized Service Centers The handle is not designed to be immersed PRT Handling Guidelines e DO keep the thermometer as clean as possible e DO immerse the thermometer in the appropriate liquid for the tempera ture range If a dry block is used the well diameter should allow the PRT to comfortably 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 e DO allow sufficient time for the thermometer to stabilize before making measurements This allows for the best accuracy e DO use the correct drive current with the thermometer to prevent error in temperature or resistance Hart Scientific recommends 1mA e DO use the protective shipping box provided or other protection when the thermometer is not in use e DO NOT subject the thermometer to any physical shock or vibration e DO NOT use pliers or other devices to squeeze the sheath This action can permanentl
3. SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSE QUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT TORT RELIANCE OR ANY OTHER THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequential damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this Warranty is held invalid or unenforceable by a court of com petent jurisdiction such holding will not affect the validity or enforceability of any other provision Fluke Corporation Hart Scientific Division 799 E Utah Valley Drive e American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail support hartscientific com www hartscientific com Subject to change without notice Copyright O 2006 Printed in USA Table of Contents 1 Before You Start l 1 1 Symbols Used mis eee bni undid wee eS 1 1 2 Safety Information o e se go a ale aS oe e ee ee ee 2 1 2 1 IWAL ES soe RS gs EE A aa at a ade ie 2 1 22 CAUTIONS dio sek da tada cba a sd zach aE ai E tty seeds he E a cae NE 2 1 3 Authorized Service Centers 02 000004 3 2 Introduction 5 2 1 Generali ee rr Bees ce a A es A AA 5 2 2 Recalibration e re ise sa Pile ea oe ORS See SS 5 3 Specifications ese s se
4. acsee Gwe WR EEE RGR ROR eT 4 Installation cs es s ea a we Bee ee eee ES we ee oe D 4 1 Lead Wire Identification 3 2654 66 46 08858 844 9 5 PRT Care and Handling Guidelines 11 Sl EPR Canes su ces ee ca tio A OS Oh SE ea 11 5 2 PRT Handling Guidelines 2 a a ee en 11 6 Operationer e enaa e a MO 6 1 General sei e a i kon aran a ed DE A eee a 13 6 2 Immersion Requirements 2 000 13 6 3 Thermal EMF ooo ciar ee a a Ow 13 6 4 Transition Junction o ss sa eae new a ee a a 13 7 Troubleshooting 0 0 ce ee ee ee ee ee ee 15 7 4 Troubleshooting 2 aa n n e e a e D e ai 15 1 Before You Start Symbols Used 1 1 Before You Start Symbols Used Table 1 lists the International Electrical Symbols Some or all of these symbols may be used on the instrument or in this guide Table 1 International Electrical Symbols Symbol Description NU AC Alternating Current PS AC DC Battery Mm Mm 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 O t ol On Canadian Standards Association o E E G 5627A PRT User s Guide 1 2 1 2 1 1 2 2 Symbol Description OVERVOLTAGE Installation CATEGORY II Pollution Degree 2 per IEC1010 1 re CAT IL fers to the level of Impulse Withstand Voltage protection provide
5. rule of thumb is that the transition junction is too hot when it is hot enough to burn your thumb 14 7 Troubleshooting Troubleshooting 7 1 Troubleshooting Troubleshooting In the event that the probe appears to function abnormally this section may be of use in solving the problem Several possible problem conditions are de scribed along with likely causes and solutions If a problem arises please read this section carefully and attempt to understand and solve the problem If the probe seems faulty or the problem cannot otherwise be solved contact an Au thorized Service Center see Section 1 3 for assistance Be sure to have the model number and serial number of your probe available Problem Causes and Solutions Data changes greater than 0 1 C are observed Mechanical shock can cause temperature errors as great as 0 5 C If this is observed first measure and record the Rtpw Data changes less than 0 1 C Slight mechanical shock can cause temperature errors less than 0 1 C Data unstable If the data is unstable at the Triple Point of Water TPW check con nections for evidence of a bad connection If the connector appears to be in good condition and the connections are good the PRT may be damaged Contact an Authorized Service Center see Section 1 3 e 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 da
6. d Equipment of OVERVOLTAGE CATEGORY II is energy consuming equipment to be supplied from the fixed installation Examples include household office and laboratory appliances C TIC Australian EMC Mark The European Waste Electrical and Electronic Equipment WEEE Directive 2002 96 EC mark Safety Information Use this instrument only as specified in this guide Otherwise the protection provided by the instrument may be impaired The following definitions apply to the terms Warning and Caution Warning identifies conditions and actions that may pose hazards to the user Caution identifies conditions and actions that may damage the instrument be ing used A Warnings To avoid personal injury follow these guidelines A 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 only be used by Trained Personnel Cautions To avoid possible damage to the instrument follow these guidelines e DO NOT drop or bang the probe in any way This will cause damage to the probe internally and affect its calibration Read Section entitled PRT Care and Handling Guidelines before re moving the PRT from the shipping box Incorrect handling can damage the PRT and v
7. d the applicable international price Hart reserves the right to invoice Buyer for importation costs of repairs replacement parts when product purchased in one country is submitted for repair in another country Hart s warranty obligation is limited at Hart s option to refund of the purchase price free of charge re pair or replacement of a defective product which is returned to a Hart authorized service 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 Destination If Hart determines that the failure was caused by misuse alteration accident or abnormal condition or operation or handling Hart will provide an estimate or repair costs and obtain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges FOB Shipping Point THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IM PLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE HART
8. ency Variations 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 between two connections If the two connections are the same temperature there will be little or no thermal EMF effects However if there is a substantial temperature difference between connections the thermal EMF effects will be significant Therefore cover or insulate any exposed bridge or galvanometer terminals to lessen the source of error The effects of thermal EMF can be can celed by using an AC bridge or a DC bridge with reversible current Transition Junction Exceeding the temperature range of the transition junction will cause a breach in the seal of the instrument Maintaining the seal is critical to preventing mois ture from entering the device If moisture penetrates the seal the PRT s short term repeatability hysteresis and insulation resistance may be adversely af fected Insulation resistance also decreases rapidly as the transition junction 13 5627A PRT User s Guide temperature increases even if the seal is not broken When the insulation resis tance becomes sufficiently low performance suffers A good
9. oid the warranty Keep the shipping container in case it is necessary to ship the PRT Incor rect packaging of the PRT for shipment can cause irreparable damage 1 Before You Start Authorized Service Centers 1 3 Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Hart product Fluke Corporation Hart Scientific Division 799 E Utah Valley Drive American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail support hartscientific com Fluke Nederland B V Customer Support Services Science Park Eindhoven 5108 5692 EC Son NETHERLANDS Phone 31 402 675300 Telefax 3 1 402 675321 E mail ServiceDesk fluke 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 5 12 3436 Telefax 86 10 6 5 12 3437 E mail xingye han fluke com cn Fluke South East Asia Pte Ltd Fluke ASEAN Regional Office Service Center 5627A PRT User s Guide 60 Alexandra Terrace 03 16 The Comtech Lobby D 118502 SINGAPORE Phone 65 6799 5588 Telefax 65 6799 5588 E mail antngOsinga fluke com When contacting these Service Centers for support please have the following information available e Model Number e Serial Number e Complete description of the problem 2 Introduction General 2 1 2 2 In
10. t 50 C to 125 C Leads Teflon insulated nickel plated stranded copper 22 AWG Time Constant Four seconds maximum for 63 2 response to step change in water moving at 3 fps Bending Radius Sheath may be ordered with a bend on a minimum radius of 19 mm 3 4 in ex cept for 50 mm 2 in area of sheath near tip Hart lab requires 20 cm 8 in of unbent sheath to re calibrate Calibration Includes manufacturer s NVLAP accredited calibration Immersion At least 100 mm 4 in recommended Size 5627A 12 12 in L x 1 4 in Dia 5627A 9 9 in L x 3 16 in Dia 5627A 6 6 in L x 3 16 in Dia Temperatures outside this range will should not be too hot to touch cause irreparable damage For best performance transition junction 4 Installation Lead Wire Identification 4 1 Installation Lead Wire Identification The 5627A PRT is equipped with a four wire cable see Figure 1 Four lead wires are used to cancel 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 White Red White Red Figure 1 PRT Schematic 5 PRT Care and Handling Guidelines PRT Care 5 1 5 2 PRT Care and Handling Guidelines PRT Care CAUTION READ THIS SECTION BEFORE REMOVING THE PRT FROM THE SHIPPING BOX OR CASE
11. ta 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 by a resistance meter should be greater than 500 meg ohms at room temperature Check the grounding of the readout device and the heat source A faulty ground on either device could interfere with high temperature mea surements A ground wire attached to the metal sheath of the PRT may help to reduce electrical noise interfer ence Temperature readout different than expected e g the heat source is set at 150 C the PRT measures 125 C Measure the PRT resistance at TPW e Ifthe resistance of the PRT is less than the rated resis tance e g 98 ohms for a 100 ohm PRT there may be a short in the sensor e Ifthe resistance of the PRT is only a few ohms there may be a short in the four lead wires e Ifthe PRT is open the resistance will be Out of Limits or in the kilohm or megohm range For more information or assistance contact an Authorized Service Center see Section 1 3 15
12. troduction General The Platinum Resistance Thermometer PRT models 5627A is designed to be a secondary standard interpolating instrument converting temperature to resis tance The 5627A may also be used as a temperature standard for calibration of industrial sensors The PRT is used with a readout device to detect tempera ture changes or actual temperature Recalibration Recalibration of the 5627A PRT should be scheduled 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 recalibration con tact an Authorized Service Center for an RMA number and current pricing see Section 1 3 Authorized Service Centers Depending on the user s Quality Assurance requirements the PRT drift should be checked periodically at the Triple Point of Water TPW Section 7 Trouble shooting provides information on drift with respect to mechanical shock and oxidation 3 Specifications Specifications Resistance Nominal 100 Temperature Coefficient 0 003859 9 C nominal Temperature Range 200 C to 420 C 5627A 6 and 5627A 9 to 300 C transition and cable temperature 0 C to 150 C Drift Rate 0 13 C at 0 C after 1000 hours at 400 C Sheath Material 316 Stainless Steel Transition junction temperature range
13. y damage the PRT e DO NOT subject the thermometer to temperatures above the highest spec ified operating temperature e DO NOT expose the thermometer s handle or cables to extreme tempera tures e DO NOT screw a clamp down so tight that it dents the sheath This can permanently damage the PRT 11 6 Operation General 6 1 6 2 6 3 6 4 Operation General For best results be familiar with the operation of the heat source and the readout instrument Be sure to follow the manufacturer s instructions for the readout instrument and the heat source immersion Requirements Stem effect can cause measurement errors for any thermometer This error is due to heat lost or gained by the sensing element through the thermometer stem In addition heat losses occur due to radiation losses from the sensing ele ment to the housing The immersion depth for standards is dependent on several factors including accuracy requirements and type of liquid However remember the handle limi tations The handle is not designed to be immersed The exact immersion depth required can be determined by performing a gradi ent test taking measurements approximately every 1 27 cm 5 inches until there is a significant difference in readings Allow the thermometer to stabilize at each new depth Plot the results to see the stem effect Thermal EMF Two factors contribute to thermal EMF chemical consistency and physical con sist
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