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Fluke 28 II Ex Getting Started Manual

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Table of Contents
28 II Ex
True-rms Digital Multimeter
PN 3945752
November 2011 Rev. 1, 10/17
© 2011-2017 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

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  Summary of Contents for Fluke 28 II Ex

  • Page 1 28 II Ex True-rms Digital Multimeter PN 3945752 November 2011 Rev. 1, 10/17 © 2011-2017 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
  • Page 2 LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship for three years from the date of purchase. This warranty does not cover fuses, disposable batteries, or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling.
  • Page 3 Table of Contents Title Page Introduction ........................1 How to Contact Fluke ..................... 1 Safety Information ......................2 Ex Safety Information ..................... 2 Errors and Load Restrictions ..................6 Features ......................... 8 Automatic Power-Off ....................14 Input Alert™ Feature ....................14 Power-Up Options .....................
  • Page 4 28 II Ex Getting Started Manual General Specifications ....................23 Detailed Specifications ....................25 AC Voltage ........................ 25 DC Voltage, Conductance, and Resistance .............. 26 Temperature ......................27 AC Current ........................ 27 DC Current ........................ 28 Capacitance ......................28 Diode ........................29 Frequency .........................

  • Page 5: Introduction

    Read “Safety Information” before using the • Technical Support USA: 1-800-44-FLUKE (1-800- Product. 443-5853) The 28 II Ex Digital Multimeter (the Product) is a compact • Calibration/Repair USA: 1-888-99-FLUKE (1-888- easy to operate measurement tool for electrical and 993-5853) electronic circuits.

  • Page 6: Safety Information

    28 II Ex Getting Started Manual Safety Information Ex Safety Information A Warning identifies conditions and procedures that are Note dangerous to the user. A Caution identifies conditions Go to www.ecom-ex.com www.fluke.com and procedures that can cause damage to the Product or download the EU Declaration of Conformity and the equipment under test.
  • Page 7 True-rms Digital Multimeter Ex Safety Information XW Warning • After you use the Product on a non-i.s. protected circuit, wait 3 minutes before To prevent electric shock or personal injury you take the Product into an while in Ex-HAZARDOUS areas, follow these Ex-hazardous area.
  • Page 8 28 II Ex Getting Started Manual XW Warning • See the Ex Safety Information section for additional warnings on Product use in To prevent personal injury in mining hazardous areas. hazardous areas: • Use the Product only as specified, or the •...
  • Page 9 True-rms Digital Multimeter Ex Safety Information • • Examine the case before you use the Measure for hazardous voltage without Product. Look for cracks or missing the Low-Pass Filter. plastic. Carefully look at the insulation • Do not apply more than the rated around the terminals.

  • Page 10: Errors And Load Restrictions

    28 II Ex Getting Started Manual Errors and Load Restrictions WCaution To prevent possible damage to the Product If there is a question that the safety or integrity of this or to the equipment under test, follow these Product is compromised, remove it from operation and guidelines: the Ex-hazardous areas immediately.
  • Page 11 True-rms Digital Multimeter Errors and Load Restrictions Table 1. Symbols WARNING - RISK OF DANGER. Consult user WARNING. HAZARDOUS VOLTAGE. Risk of electric shock. documentation.  Double Insulated Capacitance AC (Alternating Current) Diode  DC (Direct Current) Conforms to European Union directives. ...

  • Page 12: Features

    28 II Ex Getting Started Manual Features Tables 2 through 5 briefly describe the features of the Product. Table 2. Inputs grt01.eps Item Terminal Description Input for 0 A to 10.00 A current (10 A to 20 A overload for 30 seconds maximum), current ...
  • Page 13 True-rms Digital Multimeter Features Table 3. Rotary Switch Positions Switch Position Function Any Position When the Product is turned on, the Product model number briefly shows on the display. AC voltage measurement  (yellow) Push for low-pass filter (K)  DC voltage measurement 600 mV dc voltage range ...
  • Page 14 28 II Ex Getting Started Manual Table 4. Pushbuttons Switch Button Function Position Set to capacitance Set to temperature  Turn on ac low-pass filter (Yellow) Set dc or ac current Set dc or ac current Change and set the range for the set function. To go to autoranging, hold the button down for position 1 second.
  • Page 15 True-rms Digital Multimeter Features Table 4. Pushbuttons (cont.) Switch Button Function Position Continuity Toggle the continuity beeper on and off. Switches between Peak (250 μs) and Normal (100 ms) response times. MIN MAX recording Hz, Duty Toggles the Product to trigger on positive or negative slope. Cycle Turns on the button backlight and display backlight, makes them brighter, and turns off the position...
  • Page 16 28 II Ex Getting Started Manual Number Feature Indication Negative measurement. In relative  mode, this sign shows that the input is less than the stored reference. High voltage present at the input. Appears if the input voltage is 30 V ...
  • Page 17 True-rms Digital Multimeter Features Table 5. Display Features (cont.) Number Feature Indication Number Feature Indication Degrees Celsius, Degrees °C °F  Warning: To Low battery. XW Fahrenheit avoid false readings, which could lead to possible electric Displays selected range  610000 mV ...

  • Page 18: Automatic Power-Off

    28 II Ex Getting Started Manual Automatic Power-Off Table 5. Display Features (cont.) The Product automatically turns off if you do not turn the rotary switch or push a button for 30 minutes. If MIN MAX Number Feature Indication Recording mode is on, the Product will not turn off. Refer to Table 6 to disable automatic power-off.

  • Page 19: Power-Up Options

    Sets the Product in calibration mode and prompts for a password.  The Product shows “” in the display and enters calibration mode. See 28 II Ex Calibration Information. Turns on the smoothing feature. The Product reads “” until C is released.

  • Page 20: Maintenance

    28 II Ex Getting Started Manual It is recommended that the Product be calibrated by Fluke Maintenance in two-year intervals. XWWarning Fuse Test To prevent electrical shock or personal As shown in Figure 2, with the Product in the injury, have the Product repaired by ECOM function, put a test lead into the ...

  • Page 21: How To Replace The Batteries

    True-rms Digital Multimeter Maintenance How to Replace the Batteries Replace the batteries with three AAA Good 0.44 A fuse: 0.995 kΩ to batteries (NEDA 24A IEC LR03). 1.005 kΩ Replace fuse: OL XWWarning To prevent electrical shock or personal injury: Touch top half •...
  • Page 22 28 II Ex Getting Started Manual Replace the batteries as follows, refer to Figure 3: Turn the rotary switch to OFF and remove the test leads from the terminals. Remove the six Torx-head screws from the case bottom and remove the battery door ().
  • Page 23 True-rms Digital Multimeter Maintenance grt10.eps Figure 3. Battery and Fuse Replacement...

  • Page 24: How To Replace The Fuses

    28 II Ex Getting Started Manual Install the fuse assembly into the fuse compartment. How to Replace the Fuses Examine or replace the fuses in the Product as follows Refer to steps four through six in the “How to (See Figure 3): Replace the Batteries”...
  • Page 25 4016494 Alligator Clip, Black AC172 or AC175 Alligator Clip, Red Test Lead Set TL175 28 II Ex Getting Started Manual 3945752 Fluke Input Cap, Amp Jack Plugs for DMMs (10 pack) 4145825 W To ensure safety, use exact replacement only.
  • Page 26 28 II Ex Getting Started Manual Alligator Clips Fuse Assembly Contains 440 mA Fuse Test Lead Set Fuse 11 A, 1000 V, Fast Amp Jack Plug set 28 II Ex Getting Started grt11.eps Figure 4. Replacement Parts...

  • Page 27: General Specifications

    True-rms Digital Multimeter General Specifications General Specifications Maximum voltage between any terminal and earth ground ..........1000 V W Fuse for mA inputs ..........0.44 A, 1000 V IR 10 kA W Fuse for A inputs ............11 A, 1000 V IR 17 kA Display ................
  • Page 28 28 II Ex Getting Started Manual Safety General ............... IEC 61010-1: Pollution Degree 2 Measurement .............. IEC 61010-2-033: CAT IV 600V / CAT III 1000V Ingress Protection ............IEC 60529: IP67, non-operating Electromagnetic Compatibility (EMC) ......In an RF field of 3 V/M, accuracy = specified accuracy +20 counts, except 600 μA dc range total accuracy = specified accuracy +60 counts.

  • Page 29: Detailed Specifications

    True-rms Digital Multimeter Detailed Specifications Detailed Specifications For all detailed specifications: Accuracy is specified for 2 years after calibration, at operating temperatures of 18 °C to 28 °C, with relative humidity at 0 % to 80 %. Accuracy specifications take the form of ±([% of Reading] + [Number of least-significant digits]). In the 4 ½-digit mode, multiply the number of least-significant digits (counts) by 10.

  • Page 30: Dc Voltage, Conductance, And Resistance

    28 II Ex Getting Started Manual DC Voltage, Conductance, and Resistance Function Range Resolution Accuracy mV dc 600.0 mV 0.1 mV ±(0.1 % + 1) 6.000 V 0.001 V 60.00 V 0.01 V V dc ±(0.05 % + 1) 600.0 V 0.1 V...

  • Page 31: Temperature

    True-rms Digital Multimeter Detailed Specifications Temperature Range Resolution [1,2] Accuracy -200 °C to +1090 °C 0.1 °C ±(1.0 % + 10) -328 °F to +1994 °F 0.1 °F ±(1.0 % + 18) Does not include error of the thermocouple probe. Accuracy specification assumes ambient temperature stable to ±...

  • Page 32: Dc Current

    28 II Ex Getting Started Manual DC Current Function Range Resolution Burden Voltage Accuracy 600.0 μA 0.1 μA 100 μV/μA ±(0.2 % + 4) μA dc 6000 μA 1 μA 100 μV/μA ±(0.2 % + 2) 60.00 mA 0.01 mA 1.8 mV/mA...

  • Page 33: Diode

    True-rms Digital Multimeter Detailed Specifications Diode Range Resolution Accuracy 2.000 V 0.001 V ±(2.0 % + 1) Frequency Range Resolution Accuracy 199.99 Hz 0.01 Hz 1999.9 Hz 0.1 Hz ±(0.005 % + 1) 19.999 kHz 0.001 kHz 199.99 kHz 0.01 kHz >200 kHz 0.1 kHz Unspecified...

  • Page 34: Duty Cycle (Vdc And Mvdc)

    28 II Ex Getting Started Manual Duty Cycle (Vdc and mVdc) Range Accuracy Within ± (0.2 % per kHz + 0.1 %) for rise times <1 μs. 0.0 % to 99.9 % 0.5 Hz to 200 kHz, pulse width >2 μs. Pulse width range is determined by the frequency by the frequency of the signal.

  • Page 35: Min Max Recording

    True-rms Digital Multimeter Detailed Specifications MIN MAX Recording Nominal Response Accuracy 100 ms to 80 % Specified accuracy ±12 counts for changes >200 ms in duration (dc functions) 120 ms to 80 % Specified accuracy ±40 counts for changes >350 ms and inputs >25 % of range (ac functions) Specified accuracy ±200 counts for changes >250 μs in duration (add ±100 counts for readings over 6000 counts)
  • Page 36 28 II Ex Getting Started Manual...