Fluke 28 II Ex User manual
PN 3945752
November 2011
© 2011 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
28 II Ex
True-rms Digital Multimeter
Getting Started
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com
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. Resellers are not authorized to extend any other warranty on Fluke’s behalf.
To obtain service during the warranty period, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that Service Center with a description of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR
PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states or countries
do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of
liability may not apply to you.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com
i
Table of Contents
Title Page
Introduction .................................................................................................................... 1
How to Contact Fluke..................................................................................................... 1
Safety Information .......................................................................................................... 2
EX Safety Information .................................................................................................... 2
Errors and Load Restrictions ..................................................................................... 6
Ex-Certification Data.................................................................................................. 7
Features......................................................................................................................... 9
Automatic Power-Off ................................................................................................. 15
Input Alert™ Feature ................................................................................................. 15
Power-Up Options ..................................................................................................... 16
Maintenance................................................................................................................... 17
General Maintenance ................................................................................................ 17
Fuse Test .................................................................................................................. 17
How to Replace the Batteries .................................................................................... 18
How to Replace the Fuses ........................................................................................ 21
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com
28 II Ex
Getting Started
ii
Service and Parts .......................................................................................................... 21
General Specifications................................................................................................... 25
Detailed Specifications .................................................................................................. 27
AC Voltage................................................................................................................ 27
DC Voltage, Conductance, and Resistance.............................................................. 28
Temperature ............................................................................................................. 29
AC Current................................................................................................................ 29
DC Current................................................................................................................ 30
Capacitance.............................................................................................................. 30
Diode ........................................................................................................................ 31
Frequency................................................................................................................. 31
Frequency Counter Sensitivity and Trigger Levels.................................................... 31
Duty Cycle (Vdc and mVdc)...................................................................................... 32
Input Characteristics ................................................................................................. 32
MIN MAX Recording ................................................................................................. 33
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www.MyFlukeStore.com
iii
List of Tables
Table Title Page
1. Symbols................................................................................................................................. 8
2. Inputs .................................................................................................................................... 9
3. Rotary Switch Positions......................................................................................................... 10
4. Pushbuttons .......................................................................................................................... 11
5. Display Features ................................................................................................................... 13
6. Power-Up Options ................................................................................................................. 16
7. Approved Batteries................................................................................................................ 19
8. Replacement Parts................................................................................................................ 22
9. Accessories........................................................................................................................... 24
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com
28 II Ex
Getting Started
iv
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www.MyFlukeStore.com
v
List of Figures
Figure Title Page
1. Display Features ................................................................................................................... 13
2. Current Fuse Test ................................................................................................................. 18
3. Battery and Fuse Replacement ............................................................................................. 20
4. Replacement Parts................................................................................................................ 23
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com
28 II Ex
Getting Started
vi
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com
1
Introduction
WX Warning
Read “Safety Information” before using the
Product.
The 28 II Ex Digital Multimeter (the Product) is a compact
easy to operate measurement tool for electrical and
electronic circuits.
This manual contains information on how to turn on the
Product, what the controls do, and Product maintenance.
Refer to the 28 II Ex Users Manual on the Product CD for
complete user instructions.
The Product is designed for operation in potentially
explosive areas of Zone 1, 2, 21, 22, and MI as specified
in Directive 1999/92/EC (ATEX 137) and 94/9/EC (ATEX
95). There can be dangerous consequences If you do not
follow these instructions.
Read the entire Users Manual before you use the
Product.
How to Contact Fluke
To contact Fluke, call one of the following telephone
numbers:
•Technical Support USA: 1-800-44-FLUKE (1-800-
443-5853)
•Calibration/Repair USA: 1-888-99-FLUKE (1-888-
993-5853)
•Canada: 1-800-36-FLUKE (1-800-363-5853)
•Europe: +31 402-675-200
•Japan: +81-3-6714-3114
•Singapore: +65-738-5655
•Anywhere in the world: +1-425-446-5500
Or, visit Fluke's website at www.fluke.com.
To register your product, visit http://register.fluke.com.
To see, print, or download the latest manual supplement,
visit http://us.fluke.com/usen/support/manuals.
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com
28 II Ex
Getting Started
2
Safety Information
The Product complies with:
•ISA-82.02.01
•CAN/CSA-C22.2 No. 61010-1-04
•IEC Standard No. 61010-1:2001
•Measurement Category III, 1000V, Pollution
Degree 2
•Measurement Category IV, 600V, Pollution
Degree 2
•Industrial use in potentially explosive areas of
zone 1, 2, 21, 22, or MI, in accordance with
ATEX requirements (ATEX 137) (see the EX
safety instructions & regulations section)
In this manual, a Warning identifies conditions and
actions that can be dangerous to the user. A Caution
identifies conditions and actions that can cause damage
to the Product or the equipment under test.
Symbols used on the Product and in this manual are
explained in Table 1.
To ensure safe operation of the Product, obey all
instructions and warnings contained in this manual.
EX Safety Information
Note
Go to www.ecom-ex.com or www.fluke.com
download the EC declaration of conformity and
Ex certificate for this product. You can also order
them from Fluke.
This manual contains information and safety regulations
that must be followed for safe, reliable operation of the
Product in hazardous areas under the described
conditions. Failure to follow the information and
instructions can have dangerous consequences, or may
contravene applicable legislation.
Please read through this manual before you start to use
the Product.
If there is a question (because of translation and/or
printing errors), refer to the English manual.
Shop for Fluke products online at: 1.877.766.5412
www.MyFlukeStore.com
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