Fluke 52 Manual do Utilizador

®51, 52, 53, 54 Series IIThermometerService ManualPN 1276123October 1999© 1999 Fluke Corporation. All rights reserved. Printed in USAAll product names

51, 52, 53, 54 Series IIService Manual2Service CentersTo contact Fluke, order parts, or locate a Fluke service center, call one of the followingteleph

ThermometerPrecautions and Safety Information3Safety InformationWWarningTo avoid electrical shock or personal injury, follow these guidelines:• Before

51, 52, 53, 54 Series IIService Manual4SpecificationsGeneral SpecificationsWeight 280 g (10 oz)Dimensions(without holster)2.8 cm × 7.8 cm × 16.2 cm(1.

ThermometerPerformance Test and Calibration Required Test Equipment5Performance Test and Calibration Required Test EquipmentRefer to Table 2 for a lis

51, 52, 53, 54 Series IIService Manual652515453zb03f.epsFigure 1. Display SegmentsKeypad TestCheck that all keypad switches are functional by pressing

ThermometerPerformance Tests74. Replace the Dewar Flask cap or cork, and insert the thermocouple wires and Mercurythermometer as shown in Figure 2. I

51, 52, 53, 54 Series IIService Manual8Table 3. Performance Test Values (K-Type Thermocouple)InputVoltageEquivalent Display Reading limitsStep (mV DC)

ThermometerCalibration and Offset Adjustment9Calibration and Offset AdjustmentCalibration consists of two parts:1. Calibration of the A/D converter,

51, 52, 53, 54 Series IIService Manual10Calibration button accesszb02f.epsFigure 4. Calibration Button Access3. The menu on the display changes to “C

ThermometerCalibration and Offset Adjustment1111. To ignore the calibration changes, use K or N, and select “CAL Abrt” and pressE.12. Proceed to Refer

LIMITED WARRANTY & LIMITATION OF LIABILITYEach Fluke product is warranted to be free from defects in material and workmanship under normal use and

51, 52, 53, 54 Series IIService Manual12Basic MaintenanceBasic maintenance required by the thermometer is discussed in this section.Cleaning the Therm

ThermometerDisassembly and Reassembly13zb01f.epsFigure 5. Battery AccessDisassembly and ReassemblyDisassembly and reassembly of the thermometer may be

51, 52, 53, 54 Series IIService Manual146. The LCD decal is now exposed and may be removed.7. To remove the main switch pad, first remove the small

ThermometerReplaceable Parts155. Push the Isothermal PCA and the Main PCA together so that the Isothermal PCApins go deeper into the Main PCA sockets

51, 52, 53, 54 Series IIService Manual16Table 4. Replaceable Parts (cont.)ItemNumber Qty.Fluke PartNumberDescriptionModelNumber9A-B 111541912154346251

ThermometerReplaceable Parts17134318A28D8F148C8B1517119A9B6105167128Ezb07f.epsFigure 6. Exploded View (Model 54 is Shown)

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1Index—A—assembly, 13—B—batteriesaccess to, 13changing, 12—C—calibration, 9A/D, 9A/D connections, 9button access, 10CAL Abrt, 10CAL A-d, 10CAL donE, 1

51, 52, 53, 54 Series IIService Manual2—S—safety, 2cautions and warnings, 3service centersphone numbers, world wide web address, 2specificationselectr

iTable of ContentsTitle PageIntroduction ... 1Serv

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iiiList of TablesTable Title Page1. International Electrical Symbols Used in this Manual... 22. Recommended Te

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vList of FiguresFigure Title Page1. Display Segments ...

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151, 52, 53, 54 Series IIService ManualWWarningTo avoid shock or injury, do not perform the performance testsor calibration procedures described in th