Fluke 51 user manual

User manual for the device Fluke 51

Device: Fluke 51
Category: IP Phone
Manufacturer: Fluke
Size: 0.41 MB
Added : 3/5/2014
Number of pages: 28
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Abstracts of contents
Summary of the content on the page No. 1

®
51, 52, 53, 54 Series II
Thermometer
Service Manual
PN 1276123
October 1999
© 1999 Fluke Corporation. All rights reserved. Printed in USA
All product names are trademarks of their respective companies.

Summary of the content on the page No. 2

LIMITED WARRANTY & LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years and begins on the date of shipment. Parts, product repairs and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in Fluke’s opinion, has been m

Summary of the content on the page No. 3

Table of Contents Title Page Introduction ....................................................................................................... 1 Service Centers.................................................................................................. 2 International Symbols........................................................................................ 2 Precautions and Safety Information .................................................................. 2 General Specificatio

Summary of the content on the page No. 4

51, 52, 53, 54 Series II Service Manual ii

Summary of the content on the page No. 5

List of Tables Table Title Page 1. International Electrical Symbols Used in this Manual........................................... 2 2. Recommended Test Equipment ............................................................................. 5 3. Performance Test Values (K-Type Thermocouple)............................................... 8 4. Replaceable Parts................................................................................................... 15 iii

Summary of the content on the page No. 6

51, 52, 53, 54 Series II Service Manual iv

Summary of the content on the page No. 7

List of Figures Figure Title Page 1. Display Segments .................................................................................................. 6 2. Ice Bath Test Equipment Connections................................................................... 7 3. Calibration Connections ........................................................................................ 9 4. Calibration Button Access ..................................................................................... 10 5

Summary of the content on the page No. 8

51, 52, 53, 54 Series II Service Manual vi

Summary of the content on the page No. 9

51, 52, 53, 54 Series II Service Manual WWarning To avoid shock or injury, do not perform the performance tests or calibration procedures described in this manual unless you are qualified to do so. Refer to the Safety Information section of this manual before using the Fluke 51, 52, 53, 54 Series II Thermometers. Caution The Fluke 51, 52, 53, 54 Series II Thermometers contain parts that can be damaged by static discharge. Follow the standard practices for handling static sensitive devices. Intro

Summary of the content on the page No. 10

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 www.fluke.com. International Symbols Table 1 identifies the international electrical symbols used in this manual. Tab

Summary of the content on the page No. 11

Thermometer Precautions and Safety Information 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.

Summary of the content on the page No. 12

51, 52, 53, 54 Series II Service Manual Specifications General Specifications Weight 280 g (10 oz) Dimensions 2.8 cm × 7.8 cm × 16.2 cm (without holster) (1.1 in × 3 in × 6.4 in) Battery 3 AA batteries Certification P, (TÜV 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 co

Summary of the content on the page No. 13

Thermometer Performance Test and Calibration Required Test Equipment Performance Test and Calibration Required Test Equipment Refer to Table 2 for a list of test equipment used in the performance test and calibration procedures. Table 2. Recommended Test Equipment Equipment Required Characteristics Recommended Model Output Voltage: 0-1V DC Voltage Calibrator Accuracy: 0.0125 % Resolution: 0.1 μV Fluke 5700A or equivalent Thermocouple connector Fluke 80CK-M For K-type thermocouple Fluke P/N 7799

Summary of the content on the page No. 14

51, 52, 53, 54 Series II Service Manual 51 53 52 54 zb03f.eps Figure 1. Display Segments Keypad Test Check that all keypad switches are functional by pressing each key and confirming the proper response on the display. Wide Range Performance Test Procedure This test verifies the instrument specifications. If the instrument fails this test, perform the calibration procedure. If the unit continues to fail, it should be taken to a Fluke service center. Ice Bath Construction To begin the performance

Summary of the content on the page No. 15

_ _ Thermometer Performance Tests 4. Replace the Dewar Flask cap or cork, and insert the thermocouple wires and Mercury thermometer as shown in Figure 2. Insert the Mercury thermometer to the same depth as the thermocouple wire. K-Type Thermocouple wire K-Type Thermocouple Copper wire connector Mercury Thermometer - + - + 51, 52, 53, or 54 Series II Thermometer 5700A Ice bath + Calibrator - zb04f.eps Figure 2. Ice Bath Test Equipment Connections Ice Bath Test Use the following proc

Summary of the content on the page No. 16

51, 52, 53, 54 Series II Service Manual Table 3. Performance Test Values (K-Type Thermocouple) Input Voltage Equivalent Display Reading limits Step (mV DC) Temperature °C °F 1 0.0000 0.0 °C 32.0 °F -0.3 to 0.3 31.5 to 32.5 2 0.9193 23.0 °C 73.4 °F 22.7 to 23.3 72.9 to 73.9 3 -5.7297 -190.0 °C -310.0 °F -189.3 to -190.7 -308.9 to -311.1 4 40.8853 990.0 °C 1814 °F 989.2 to 990.8 1813 to 1815 5 48.8382 1200 °C 2192 °F 1199 to 1201 2190 to 2194 Verification of IR Communications Port (Fl

Summary of the content on the page No. 17

_ Thermometer Calibration and Offset Adjustment Calibration and Offset Adjustment Calibration consists of two parts: 1. Calibration of the A/D converter, using the set up shown in Figure 3. 2. Reference junction calibration, using the ice bath test set up shown in Figure 2. A/D Calibration To calibrate the A/D portion of the thermometer, follow these steps: 1. Connect the calibrator to the T1 input of the thermometer using copper (non- thermocouple) wire and a copper thermocouple connector. Refe

Summary of the content on the page No. 18

51, 52, 53, 54 Series II Service Manual Calibration button access zb02f.eps Figure 4. Calibration Button Access 3. The menu on the display changes to “CAL A-d”. Note Within CAL are four menu options that may be accessed by pressing E: • CAL A-d prompts the operator for the A/D calibration inputs in mV dc. • CAL rEF allows the operator to calibrate the reference junction at a known temperature. • CAL donE saves the new calibration constants in memory. • CAL Abrt ignores calibration changes (turn

Summary of the content on the page No. 19

Thermometer Calibration and Offset Adjustment 11. To ignore the calibration changes, use K or N, and select “CAL Abrt” and press E. 12. Proceed to Reference Junction Calibration. Reference Junction Calibration Note This procedure is described using an ice bath and a K-type thermocouple. It can be performed in °C, °F, or K with any thermocouple and a known, accurate temperature between 0 °C (+32 °F) and +50 °C (+122 °F). Note It is important that the temperature of the thermocouple and the intern

Summary of the content on the page No. 20

51, 52, 53, 54 Series II Service Manual Basic Maintenance Basic maintenance required by the thermometer is discussed in this section. Cleaning the Thermometer Caution • To avoid damaging the thermometer, do not use aromatic hydrocarbons or chlorinated solvents for cleaning. These solutions react with the plastics used in the thermometer. • Do not allow the LCD to get wet. • Do not remove any of the lubricant from the battery/pca connection. Clean the thermometer case with a mild detergent and wa


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