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51, 52, 53, 54 Series II Service Manual Service Centers To contact Fluke, order parts, or locate a Fluke service center, call one of the following telephone numbers: USA: 1-888-99-FLUKE (1-888-993-5853) Canada: 1-800-36-FLUKE (1-800-363-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181 Singapore: +65-738-5655 Anywhere in the world: +1-425-446-5500 Or, visit Fluke’s Web site at International Symbols Table 1 identifies the international electrical symbols used in this manual. Table 1. International Electrical Symbols Used in this Manual . Low Battery Important information Complies with relevant Canadian Standards Association directives Complies with European Union directives Precautions and Safety Information Use the thermometer only in the ways specified in the 51/52 Series II Users Manual and the 53/54 Series II Users Manual. If the thermometer is used in ways not specified, the thermometer may be damaged. In this manual, a Warning statement identifies conditions and actions that pose a hazard to the user; a Caution statement identifies conditions and actions that may damage the thermometer or the test instruments. Thermometer Precautions and SafetyInformation Safety Information WWarning 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. • Replace the batteries as soon as the low battery indicator (B) appears. The possibility of false readings can lead to personal injury. • Do not use the thermometer if it operates abnormally. Protection may be impaired. When in doubt, have the thermometer serviced. • Do not operate the thermometer around explosive gas, vapor, or dust. • Do not apply more than the rated voltage, as marked on the thermometer, between the thermocouple(s), or between any thermocouple and earth ground. • Models 52 and 54: 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 To avoid damaging the thermometer or the equipment under test: • Use the proper thermocouples, function, and range for your thermometer. • Do not attempt to recharge the batteries. • To prevent explosion, do not dispose of batteries in fire. • Follow local laws or regulations when disposing of batteries. • Match the + and - polarities of the batteries with the battery case markings. 51, 52, 53, 54 Series II Service Manual Specifications General Specifications Weight 280 g (10 oz) Dimensions (without holster) 2.8 cm . 7.8 cm . 16.2 cm (1.1 in . 3 in . 6.4 in) Battery 3 AA batteries Certification P, . (TUV pending) Safety CSA C22.2 No. 1010.1 1992 EN 61010 Amendments 1, 2 CAT I OVERVOLTAGE (Installation) CATEGORY I, Pollution Degree 2 per IEC1010-1* * Refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in which measures are taken to limit the transient over voltages to an appropriate low level. Environmental Operating Temperature -10 oC to +50 oC (+14 oF to +122 oF) Storage Temperature -40 oC to +60 oC (-40 oF to +140 oF) Humidity Non Condensing (< +10 oC) (< +50 oF) 95% RH (+10 oC to +30 oC) (+50 oF to +86 oF) 75% RH (+30 oC to +40 oC) (+86 oF to +104 oF) 45% RH (+40 oC to +50 oC) (+104 oF to +122 oF) (Without Condensation) Electrical Measurement Range J-type: -210 oC to +1200 oC (-346 oF to +2192 oF) K-type: -200 oC to +1372 oC (-328 oF to +2501 oF) T-type: -250 oC to +400 oC (-418 oF to +752 oF) E-type: -150 oC to +1000 oC (-238 oF to +1832 oF) N-type: -200 oC to +1300 oC (-328 oF to +2372 oF) R- and S-type: 0 oC to +1767 oC (+32 oF to +3212 oF) Display Resolution 0.1 oC / oF / K < 1000o 1.0 oC / oF / K . 1000o Measurement Accuracy J-, K-, T-, E-, and N-type: ±[0.05 % of reading + 0.3 oC (0.5 oF)] [below -100 oC (-148 oF): add 0.15 % of reading for J, K, E, and N; and 0.45 % of reading for T] R- and S-type: ±[0.05 % of reading + 0.4 oC (+0.7 oF)] Temperature Coefficient 0.01 % of reading + 0.03 oC per oC (0.05 oF per oF) outside the specified +18 oC to +28 oC (+64 oF to +82 oF) range [below -100 oC (-148 oF): add 0.04 % of reading for J-, K-, E-, and N-type; and 0.08 % of reading for T-type] Electromagnetic Compatibility Susceptibility: ± 2 oC (± 3.6 oF) for 80 MHz to 200 MHz in 1.5 v/m field, for 200 MHz to 1000 MHz in 3 V/m field. Emissions: Commercial limits per EN50081-1 Maximum Differential Common Mode Voltage 1 V (Maximum voltage difference between T1 and T2) Temperatur...

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