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Fluke 77 Calibration Information Manual

Series iv
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Introduction
To avoid electric shock or injury, do not perform the performance tests or
calibration adjustment procedures unless qualified to do so.
The information provided in this document is for the use of qualified personnel
only.
The Model 77 Series IV Calibration Information provides the information necessary to adjust and verify
the performance of the Fluke Model 77 Series IV Digital Multimeter (hereafter known as the Meter).
The following information is included in this document:
Safety Information (page 2)
International Electrical Symbols (page 3)
Test Lead Alert (page 3)
Specifications (page 4)
Testing and Replacing the Fuses (page 7)
Replacing the Battery (page 8)
Cleaning (page 9)
Replacing the LCD (page 9)
Performance Tests (page 10)
Calibration Adjustment (page 14)
Replaceable Parts and Accessories (page 17)
Complete Warranty (page 19)
See the Model 77 Series IV Users Manual for complete operating instructions.

Service Information

To contact Fluke, 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: +31 402-675-200
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.
To register your product, visit
September 2006
© 2006 Fluke Corporation. All rights reserved.
XWWarning
register.fluke.com
Model 77 Series IV
Digital Multimeter

Calibration Information

®
1

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  Summary of Contents for Fluke 77

  • Page 1: Calibration Information

    The Model 77 Series IV Calibration Information provides the information necessary to adjust and verify the performance of the Fluke Model 77 Series IV Digital Multimeter (hereafter known as the Meter). The following information is included in this document: •...
  • Page 2: Safety Information

    Model 77 Series IV Calibration Information Safety Information Warning and Caution Statements A XW Warning identifies hazardous conditions and actions that could cause bodily harm or death. A W Caution identifies conditions and actions that could damage the Meter, the equipment under test, or cause permanent loss of data.
  • Page 3: International Electrical Symbols

    Digital Multimeter International Electrical Symbols International Electrical Symbols The following international symbols appear in this document, and on the Meter. Symbols Description Symbols Description AC (Alternating Current) Fuse DC (Direct Current) Conforms to European Union directives Conforms to relevant Canadian Standards DC/AC Association directives Earth ground...
  • Page 4: Specifications

    Model 77 Series IV Calibration Information Specifications Accuracy is specified for 1 yr after calibration, at operating temperatures of 18 °C to 28 °C, with relative humidity at 0 % to 90 %. Accuracy specifications take the form of ±([ % of Reading ] + [ Counts ]).
  • Page 5: Digital Multimeter Specifications

    Digital Multimeter Specifications Function Range Resolution Accuracy ± ( [ % of Reading ] + [ Counts ] ) AC Volts (Average 6.000 V 0.001 V responding) 60.00 V 0.01 V 2.0 % + 2 600.0 V 0.1 V (45 Hz to 1 kHz) 1000 V DC mV 600.0 mV...
  • Page 6 Model 77 Series IV Calibration Information Overload Input Impedance Common Mode Rejection Ratio Function Normal Mode Rejection Protection (Nominal) (1 kΩ Unbalanced) Volts AC 1000 V >10 MΩ <100 pF >60 dB @ dc, 50 Hz or 60 Hz Volts DC 1000 V >10 MΩ...
  • Page 7: Testing The Fuses

    Digital Multimeter Testing the Fuses Testing the Fuses XWWarning To avoid electrical shock or personal injury: • Remove the test leads and any input signals before replacing the battery or fuses. • To avoid electrical shock, arc blast, or damage to the Meter, install only fuses with the amperage, interrupt, voltage, and speed ratings specified in Table 4.
  • Page 8: Replacing The Fuses

    Model 77 Series IV Calibration Information Replacing the Fuses XWWarning To avoid electrical shock, arc blast, or damage to the Meter, install only fuses with the amperage, interrupt, voltage, and speed ratings specified in Table 4. To replace the Fuses (refer to Figure 2): 1.
  • Page 9: Replacing The Lcd

    Digital Multimeter Cleaning Cleaning XWWarning To avoid electrical shock: • Remove test leads and any input signals before cleaning. • Do not reinstall the pca until it is completely dry. • Dirt or moisture in the terminals can affect readings. W Caution To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated solvents for cleaning.
  • Page 10: Performance Tests

    Model 77 Series IV Calibration Information LCD Mask aik15f.eps Figure 3. Removing the LCD Mask Performance Tests The following performance tests verify the complete operation of the Meter and check the accuracy of each Meter function against its specifications. The recommended calibration interval is 12 months. If the Meter fails any part of the test, calibration adjustment and/or repair is indicated.
  • Page 11: Required Equipment

    Digital Multimeter Performance Tests Required Equipment A Fluke 5500A Multi-Product Calibrator (or equivalent) is required for the performance test procedures in this document. If an equivalent calibrator is used, it must meet the accuracy specifications shown in Table 1. Table 1. Calibrator Specifications...
  • Page 12 Model 77 Series IV Calibration Information Performance Tests Note When calibrating or measuring ac current, avoid the potential for errors from coupled noise by either: 1. Shorting the VeG to the COM input 2. Having no connection to the VeG input.
  • Page 13 9.25 A ac AC Amps 3 mA, 0 Hz 2.93 mA dc 3.07 mA dc 50 mA 49.23 mA dc 50.77 mA dc DC Milliamps −406.2 mA dc −393.8 mA dc -400 mA 4.0 A 3.938 A dc 4.062 A dc DC Amps −9.16 A dc...
  • Page 14: Calibration Adjustment Procedure

    Model 77 Series IV Calibration Information Calibration Adjustment Perform the calibration adjustment procedures if the Meter fails the performance tests. The Meter buttons behave as follows when the calibration mode is enabled: Press and hold this button to test the present function. This measurement is uncalibrated and may be inaccurate.
  • Page 15 Digital Multimeter Calibration Adjustment Calibration Seal Calibration Button aik14f.eps Figure 4. Calibration Access...
  • Page 16 Model 77 Series IV Calibration Information Table 3. Calibration Steps Function (Switch Position) Calibration Step Input Value C-01 600.0 mV dc (DC Millivolts) 120.0 mV dc C-02 C-03 6.000 V dc (DC Volts) C-04 60.00 V dc C-05 600.0 V dc C-06 600.0 mV, 60 Hz...
  • Page 17: Replaceable Parts And Accessories

    Description Part No (Not shown) TL75 Test Lead Set* 855705 (Not Shown) 77 Series IV Users Manual (English only) 2695884 77 Series IV Users Manual CD (English, and all translated versions) 2695825 Case Top 2695766 Window 648714 Shock Absorber 428441...
  • Page 18 Model 77 Series IV Calibration Information aik16f.eps Figure 5. Replaceable Parts and Accessories...
  • Page 19 Lifetime Limited Warranty Each Fluke 20, 70, 80, 170, and 180 Series DMM will be free from defects in material and workmanship for its lifetime. As used herein, “lifetime” is defined as seven years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years from the date of purchase.
  • Page 20 Model 77 Series IV Calibration Information...

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