51 & 52 Series II
Contents
1. Wipe with a damp sponge or soft rag 51 amp 52 Series Il Maintenance Calibration To ensure that the thermometer performs to its accuracy specifications Fluke recommends that you calibrate the thermometer annually starting one year after purchase To calibrate the thermometer contact Fluke for the Service Center nearest you or follow the calibration procedure in the service manual listed in Replacement Parts and Accessories Specifications Environmental Operating 10 C to 50 C 14 F to 122 F Temperature Storage 40 C to 60 C 40 F to 140 F Temperature Humidity Non condensing lt 10 C lt 50 F 95 RH 10 C to 30 C 50 F to 86 F 75 RH 30 C to 40 C 86 F to 104 F 45 RH 40 C to 50 C 104 F to 122 F 13 51 amp 52 Series Il Users Manual General Dimensions 2 8 cm x 7 8 cm x 16 2 cm without 1 1 in x 3 in x 6 4 in holster Battery 3 AA batteries Certification CE Safety CAN CSA C22 2 No 61010 1 04 ANSI UL 61010 1 2004 EN IEC 61010 1 2001 EN IEC 61326 1 2006 CATI OVERVOLTAGE Installation CATEGORY I Pollution Degree 2 per IEC1010 1 Refers to the level of Impulse Withstand Voltage protection provided Category 1 products should not be attached to mains circuits 14 80 PK 1 Thermocouple supplied with thermometer Type K Chromel Alumel bead style Temperature 40 C to 260 C Rango 40 F to 500 F2. Electrical Measurement J type 210 C to 1200 C Range 346 F to 2192 F K type 200 C to 1372 C 328 F to 2501 F T type 250 C to 400 C 418 F to 752 F E type 150 C to 1000 C 238 F to 1832 F Display 0 1 C F K lt 1000 Resolution 1 0 C F K 21000 51 amp 52 Series II Replacement Parts and Accessories Electrical cont Applicable NIST 175 Standards Measurement J K T and E type 0 05 of Accuracy T1 T2 reading 0 3 C 0 5 F or T1 T2 o o below 100 C 148 F add 0 15 of Model 52 reading for J K E and N type and l 0 45 of reading for T type Replacement Parts and Accessories Temperature 0 01 of reading 0 03 C per C Coefficient 0 05 F per F outside the specified Accessory Part Number 18 C to 28 C 64 F to 82 F range ni 6 Holster and Flex Stand Assembly 1272438 below 100 C 148 F add 0 04 of 0 08 of reading for T type AA NEDA 15A IEC LR6 batteries 376756 Electromagnetic Susceptibility 2 C 3 6 F for 80 MHz 80PK 1 K Type Bead Thermocouple 773135 Compatibility to 200 MHz in 1 5 V m field for 200 MHz to 1000 MHz in 3 V m field CD ROM 1276106 Accuracy is specified for ambient temperatures between 18 C 64 F and 28 C 82 F for a period of 1 year The above specifications do not include thermocouple error EN50081 1 Maximum 1 V Maximum
3. feature Battery Complies with relevant Canadian Standards ous Association directives Getting Started e Figure 1 and Table 3 describe the components Everything in this Users Manual applies both to Models e Figure 2 and Table 4 describe the display 51 and 52 unless otherwise indicated A A e Table 5 describes the functions of the buttons To become familiar with the thermometer study the following Then read the following sections Components Figure 1 Components aas01f eps 51 amp 52 Series Il Getting Started Table 3 Components 51 amp 52 Series Il Users Manual Display Elements Table 4 Display Elements The thermocouple measurement includes an offset See Changing Setup Options Mc The displayed readings do not change LI lo si T2 SETUP A shift function is in progress Di H H Bi Setup is in progress 12 Cl Low battery Replace the batteries 88 BE TI TH H H H kl 5 Primary Display hour min 7 Zu Model 51 T1 reading OT RAE MAX MIN AVG Model 52 T1 T2 or T1 T2 reading aas02f eps The temperature unit Figure 2 Display Elements Secondary Display MAX MIN AVG or offset Model 52 T1 or T2 reading The thermocouple type Time Display The elapsed time Buttons 51 amp 52 Series Il Getting Started Table 5 Buttons EEG Press COD to turn the thermometer on or off Shift function Press C 0 dili
4. CANCEL to stop displaying the minimum maximum and average readings in the secondary display Press to turn the backlight on and off The backlight turns off after 2 minutes without any button presses If the battery is low the backlight is disabled Press to step through the maximum minimum and average readings When viewing logged readings shows the maximum minimum and average of the logged readings Press gt CANCEL to turn off this display Press to freeze or unfreeze the displayed readings Press when turning on the thermometer to test the display All display elements appear Model 52 Press to toggle showing the T1 T2 and T1 T2 differential temperature measurement in the primary or secondary display 51 amp 52 Series Il Users Manual Table 5 Buttons cont Press to start or exit Setup See Changing Setup Options a to scroll to the Setup option you want to change a to increase the displayed setting Cy to scroll to the Setup option you want to change 7 to decrease the displayed setting er to enter a Setup option er again to store the displayed setting in memory Using the Thermometer 1 Plug the thermocouple s into the input connector s 2 Press to turn on the thermometer After 1 second the thermometer displays the first reading If no thermocouple is plugged into the selected input or the thermocouple is open the display shows Changing Setup
5. FLUKE 51 8 52 Series II Thermometer Users Manual English September 1999 Rev 2 11 10 1999 2010 Fluke Corporation All rights reserved All product names are trademarks of their respective companies Specifications subject to change without notice Limited Warranty amp Limitation of Liability This Fluke product will be free from defects in material and workmanship for 3 years from the date of purchase This war ranty does not cover fuses disposable batteries or damage from accident neglect misuse or abnormal conditions of opera tion or handling Resellers are not authorized to extend any other warranty on Fluke s behalf To obtain service during the warranty period send your defective tester to the nearest Fluke Authorized Service Center with a description of the problem THIS WARRANTY IS YOUR ONLY REMEDY NO OTHER WARRANTIES SUCH AS FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSED OR IMPLIED FLUKE IS NOT LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES ARISING FROM ANY CAUSE OR THEORY Since some states or countries do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages this limitation of liability may not apply to you Fluke Corporation Fluke Europe B V P O Box 9090 P O Box 1186 Everett WA 5602 B D Eindhoven 98206 9090 The Netherlands To register your product visit www fluke warranty com 10 96 Table of Contents Introduc
6. Options Use Setup to change the thermocouple type offset sleep mode and line frequency settings The thermometer stores the settings in its memory Setup settings reset only when the batteries are removed for more than 2 minutes 51 amp 52 Series II Using the Thermometer Entering or Exiting Setup When the thermometer is in Setup mode the display shows Ba e Press to start or exit Setup Setup Options Option aie Settings Thermocouple TYPE J K T or E Type Offset T1 or T2 Model 52 Sleep Mode SUP on Sleep mode on or OFF sleep mode off Line Frequency L nE 50 H 50 Hz or 60 H 60 Hz 51 amp 52 Series Il Users Manual Changing a Setup Option 1 10 Press A Jor v to scroll to the setup option you want to change Press se to indicate that you want to change this setting Press 4 Jor s until the setting you want to use appears on the display Press to store the new setting in memory Notes Setup is disabled in MIN MAX mode Offset The primary display shows the temperature plus the offset and the secondary display shows the offset Remember to reset the offset to 0 0 when it is no longer needed The offset automatically resets to 0 0 when you change the thermocouple type Model 52 You can store individual offsets for T1 and T2 Sleep mode The thermometer enters sleep mode if no button press occurs for 20 minutes Pressing any bu
7. n the display The display shows HI 2 Model 52 Press to toggle showing the T1 T2 or T1 T2 readings in the primary or secondary display 3 Press again to turn off the HOLD function Viewing the MIN MAX and AVG Readings 1 Press to step through the maximum MAX minimum MIN or the average AVG readings The elapsed time since entering MIN MAX mode or the time at which the minimum or maximum occurred appears on the display 2 Press O CANCEL to exit MIN MAX mode 12 Using the Offset to Adjust for Probe Errors Use the offset option in Setup to adjust the thermometer s readings to compensate for the errors of a specific thermocouple The allowable adjustment range is 5 0 C or K and 9 0 F 1 Plug the thermocouple into the input connector 2 Place the thermocouple in a known stable temperature environment such as an ice bath or a dry well calibrator 3 Allow the readings to stabilize 4 In Setup change the offset until the primary display reading matches the calibration temperature See Changing Setup Options Maintenance Replacing the Batteries Refer to the safety information in Table 1 before replacing the batteries 1 Turn off the thermometer if necessary 2 Loosen the screw and remove the battery door 3 Replace the three AA batteries 4 Replace the battery door and tighten the screw Cleaning the Case and Holster Use soap and water or a mild commercial cleaner
8. nly as specified in this manual Otherwise the protection provided by the meter may be impaired Refer to safety information in Table 1 and meter symbols in Table 2 51 amp 52 Series Il Contacting Fluke To order accessories receive assistance or locate the nearest Fluke distributor or Service Center call 1 888 99 FLUKE 1 888 993 5853 in USA 1 800 36 FLUKE 1 800 363 5853 in Canada 31 402 678 200 in Europe 81 3 3434 0181 in Japan 65 738 5655 in Singapore 1 425 446 5500 from other countries Address correspondence to Fluke Corporation Fluke Europe B V P O Box 9090 P O Box 1186 Everett WA 98206 9090 5602 BD Eindhoven USA The Netherlands Visit us on the World Wide Web at www fluke com To register your product visit http register fluke com 51 amp 52 Series II Users Manual Table 1 Safety Information A Warning A Warning identifies conditions and actions that pose hazards to the user To avoid electrical shock or personal injury follow these guidelines e Before using the thermometer inspect the case Do not use the thermometer if it appears damaged Look for cracks or missing plastic Pay particular attention to the insulation around the connectors e Disconnect the thermocouple s from the thermometer before opening the case e Replace the batteries as soon as the battery indicator i appears The possibilitv of false readings can lead to personal injurv e Donotuse the thermometer if i
9. t operates abnormally Protection may be impaired When in doubt have the thermometer serviced e Reflective objects result in lower than actual temperature measurements These objects pose a burn hazard e Do not operate the thermometer around explosive gas vapor or dust e Do not connect to voltages gt 30 V ac rms 42 V pk 60 V dc from earth ground 51 amp 52 Series Il Introduction Table 1 Safety Information cont A Warning cont e Model 52 Measurement errors may occur if voltages on the measurement surfaces result in potentials greater than 1 V between the two thermocouples When potential differences are anticipated between the thermocouples use electrically insulated thermocouples e When servicing the thermometer use only specified replacement parts e Do not use the thermometer with any part of the case or cover removed Caution A Caution identifies conditions and actions that may damage the meter or the equipment under test e Use the proper thermocouples function and range for your thermometer e Do not attempt to recharge the batteries e To prevent explosion do not throw batteries into a fire Follow local laws or regulations when disposing of batteries Match the and polarities of the battery with the battery case 51 amp 52 Series Il Users Manual Table 2 International Symbols Refer to the manual for information about this Complies with European Union directives
10. tion nee een Contacting FIUKE na Getting Started iiin annann E E en nenne COMPONENTS ii Display Elements era ee Era BUON S ti si a iaia Using the Thermometer ss sse i Changing Setup Options nn tran tran nmmn nar nnmmnntmn Entering or Exiting SEtup i Setup OPON Seier alici Changing a Setup Option rna ar nr nr nanna nr Measuring Temperatures ii Connecting a THErMOCOUple nn n nn r nn Displaying Temperatures ucnalazanina lesa ea Holding the Displayed Readings nn Viewing the MIN MAX and AVG Readings Using the Offset to Adjust for Probe Errors nn nnnen near ena 51 amp 52 Series II Users Manual Maintenance iene be eldest ERE Replacing the BatterieS i Cleaning the Case and Holster nn nnn ann nr a nanna Calibration ia ii e i Aci SPECNCahonsi anni it a f A a aiad Environmental a laser en EO PE EE EE 80 PK 1 Thermocouple supplied with thermometer eg 0 anziani ERARIALI EE EE Replacement Parts and Accessories ernennen nennen nr li Introduction The Fluke Model 51 and Model 52 Thermometers the thermometer are microprocessor based digital thermometers designed to use external J K T and E type thermocouples temperature probes as temperature sensors Use the thermometer o
11. tton wakes the thermometer and returns it to its previous state Sleep mode becomes enabled each time you turn on the thermometer and is automatically disabled in MIN MAX mode Line frequency For optimum rejection of line noise the thermometer must be set for the local line frequency Measuring Temperatures Connecting a Thermocouple To change the thermocouple type see Changing Setup Options The North American ANSI Color Code is Type J K E T N Color Black Yellow Purple Blue Orange 1 Plug a thermocouple into the input connector s Make sure that the polarity is correct 2 Set the thermometer for the correct thermocouple type Displaying Temperatures 1 Press to select the correct temperature scale 2 Hold or attach the thermocouple s to the measurement location The temperature reading appears in the primary display 3 Model 52 Press to toggle between showing the T1 T2 and T1 T2 readings in the primary or secondary display 51 amp 52 Series II Measuring Temperatures Notes The display shows when a thermocouple is not connected The display shows OL overload when the temperature being measured is outside the thermocouple s valid range Model 52 If only thermocouple T2 is connected the T2 reading appears in the primary display 11 51 amp 52 Series Il Users Manual Holding the Displayed Readings 1 Press to freeze the readings o
12. voltage difference Differential between T1 and T2 Common Mode Voltage Temperature ITS 90 Scale 15 51 amp 52 Series Il Users Manual 16
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