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®
51 & 52 Series II
Thermometer
Users Manual
English
September 1999 Rev.1, 6/01
© 1999-2001 Fluke Corporation, All rights reserved. Printed in USA
All product names are trademarks of their respective companies.
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Limited Warranty & 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 Cent
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Table of Contents Title Page Introduction....................................................................................................................1 Contacting Fluke....................................................................................................... 1 Getting Started............................................................................................................... 4 Components................................................................................
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51 & 52 Series II Users Manual Maintenance................................................................................................................... 13 Replacing the Batteries ............................................................................................. 13 Cleaning the Case and Holster.................................................................................. 13 Calibration ...........................................................................................
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51 & 52 Series II Contacting Fluke Introduction To order accessories, receive assistance, or locate the The Fluke Model 51 and Model 52 Thermometers (“the nearest Fluke distributor or Service Center, call: thermometer”) are microprocessor-based, digital thermometers designed to use external J-, K-, T-, and E- 1-888-99-FLUKE (1-888-993-5853) in USA type thermocouples (temperature probes) as temperature 1-800-36-FLUKE (1-800-363-5853) in Canada sensors. +31-402-678-200 in Europe +81-3-3434-0181 in
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51 & 52 Series II Users Manual Table 1. Safety Information WWarning A Warning identifies conditions and actions that pose hazards to the user. To avoid electrical shock or personal injury, follow these guidelines: • 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. • Disconnect the thermocouple(s) from the thermometer before opening the case. • Repl
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51 & 52 Series II Introduction Table 1. Safety Information (cont.) WWarning (cont.) • 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. • When servicing the thermometer, use only specified replacement parts. • Do not use the thermometer with any part of the case or cover removed. Caution A
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51 & 52 Series II Users Manual Table 2. International Symbols Refer to the manual for information about this Complies with European Union directives. W P feature. Battery. Complies with relevant Canadian Standards M Association directives. • Figure 1 and Table 3 describe the components. Getting Started • Figure 2 and Table 4 describe the display. Everything in this Users Manual applies both to Models 51 and 52 unless otherwise indicated. • Table 5 describes the functions of the buttons. To becom
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51 & 52 Series II Getting Started Components Table 3. Components xx A Thermocouple T1 input B Model 52: Thermocouple T2 input 3 C Holster 2 D Display 1 4 5 E Buttons F Battery door G Batteries 6 7 aas01f.eps Figure 1. Components 5
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51 & 52 Series II Users Manual Table 4. Display Elements Display Elements xx A The thermocouple measurement includes an 2 3 offset. See "Changing Setup Options." 4 5 1 B The displayed readings do not change. C A shift function is in progress. 6 D Setup is in progress. E Low battery. Replace the batteries. 7 10 F Primary Display. 8 Model 51: T1 reading. 9 Model 52: T1, T2, or T1-T2 reading. aas02f.eps Figure 2. Display Elements G The temperature unit. H Secondary Display: MAX, MIN, AVG, or offset
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51 & 52 Series II Getting Started Buttons Table 5. Buttons A Press A to turn the thermometer on or off. G Press G, M (CANCEL) to stop displaying the minimum, maximum, and average readings in the secondary display. (Shift function) Q Press Q 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. M Press M to step through the maximum, minimum, and average readings. When viewing logged readings, shows t
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51 & 52 Series II Users Manual Table 5. Buttons (cont.) D Press D to start or exit Setup. (See "Changing Setup Options.") K Press K to scroll to the Setup option you want to change. Press K to increase the displayed setting. N Press N to scroll to the Setup option you want to change. Press N to decrease the displayed setting. E Press E to enter a Setup option. Press E again to store the displayed setting in memory. 8
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51 & 52 Series II Using the Thermometer Entering or Exiting Setup Using the Thermometer When the thermometer is in Setup mode, the display 1. Plug the thermocouple(s) into the input connector(s). shows s. 2. Press A to turn on the thermometer. • Press D to start or exit Setup. After 1 second the thermometer displays the first reading. Setup Options If no thermocouple is plugged into the selected input or the Menu thermocouple is "open," the display shows "- - - -" Option Item Settings Changing S
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51 & 52 Series II Users Manual Sleep mode: Changing a Setup Option The thermometer enters sleep mode if no button 1. Press K or N to scroll to the setup option you press occurs for 20 minutes. Pressing any button want to change. wakes the thermometer and returns it to its 2. Press E to indicate that you want to change this previous state. Sleep mode becomes enabled setting. each time you turn on the thermometer and is automatically disabled in MIN MAX mode. 3. Press K or N until the setting you
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51 & 52 Series II Measuring Temperatures Notes Measuring Temperatures The display shows "- - - -" when a thermocouple Connecting a Thermocouple is not connected. To change the thermocouple type, see “Changing Setup The display shows 0L (overload) when the Options.” The North American ANSI Color Code is: temperature being measured is outside the thermocouple’s valid range. Type JK E T N Model 52: If only thermocouple T2 is connected, Color Black Yellow Purple Blue Orange the T2 reading appears i
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51 & 52 Series II Users Manual Holding the Displayed Readings Using the Offset to Adjust for Probe Errors 1. Press h to freeze the readings on the display. Use the offset option in Setup to adjust the thermometer’s The display shows H. readings to compensate for the errors of a specific 2. Model 52: Press T to toggle showing the T1, T2, or thermocouple. T1-T2 readings in the primary or secondary display. o The allowable adjustment range is ± 5.0 C or K, and o 3. Press h again to turn off the HOL
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51 & 52 Series II Maintenance Calibration Maintenance To ensure that the thermometer performs to its accuracy Replacing the Batteries specifications, Fluke recommends that you calibrate the Refer to the safety information in Table 1 before replacing thermometer annually, starting one year after purchase. the batteries. To calibrate the thermometer, contact Fluke for the 1. Turn off the thermometer if necessary. Service Center nearest you or follow the calibration procedure in the service manual
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51 & 52 Series II Users Manual General 80 PK-1 Thermocouple (supplied with thermometer) Weight 280 g (10 oz) Type Type K, Chromel Alumel, bead style Dimensions 2.8 cm × 7.8 cm × 16.2 cm o o (without (1.1 in × 3 in × 6.4 in) Temperature - 40 C to +260 C o o holster) Range (- 40 F to +500 F) o o Accuracy ± 1.1 C (± 2.0 F) Battery 3 AA batteries Certification P, ) s Electrical o o Measurement J-type: - 210 C to +1200 C Safety CSA C22.2 No. 1010.1 1992 o o Range (- 346 F to + 2192 F) EN 61010 Amen
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51 & 52 Series II Replacement Parts and Accessories Electrical (cont.) Replacement Parts and Accessories Measurement J-, K-, T-, and E-type: ±[0.05 % of o o Accessory Part Number Accuracy, T1, reading + 0.3 C (0.5 F)] o o T2, or T1-T2 [below - 100 C (- 148 F): add 0.15 % (Model 52) of reading for J-, K-, E-, and N-type; Holster and Flex Stand Assembly 1272438 and 0.45 % of reading for T-type] o o Temperature 0.01 % of reading + 0.03 C per C AA NEDA 15A IEC LR6 batteries 376756 o o Coefficient (
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51 & 52 Series II Users Manual 16
