Fluke 28 II Ex Calibration Information

May 2012 Rev. 1, 10/17
© 2012-2017 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies. 1
28 II Ex
Digital Multimeter
Calibration Information
Introduction
XWWarning
To prevent possible electrical shock, fire, or personal injury:
• Read all safety information before you use the Product.
• Do not do the performance tests or calibration adjustment
procedures unless qualified to do so.
• Read the entire Users Manual and the Safety Instructions
before you use the Product.
• Carefully read all instructions.
The 28 II Ex Calibration Information contains adjustment and performance test
procedures for the Fluke Model 28 II Ex Digital Multimeter (the Product or Meter).
This document includes:
• Safety Information (page 2)
• International Electrical Symbols (page 4)
• Specifications (page 5)
• General Maintenance (page 9)
• Fuse Test (page 9)
• Performance Tests (page 12)
• Calibration Adjustment Procedure (page 16)
• Limited Warranty (page 20)
See the 28 II Ex Users Manual for instructions on Product operation.
How to Contact Fluke
To contact Fluke, call one of the following telephone numbers:
• Technical Support USA: 1-800-99-FLUKE (1-800-993-5853)
• 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: +81-3-3434-0181
• China: 86-400-921-0835
• Singapore: +65-6799-5566
• 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 view, print, or download the latest manual supplement, visit
http://us.fluke.com/usen/support/manuals.

Fluke 28 II Ex Specifications

General

Diode test	Yes
Product type	Digital multimeter
Product color	Black, Red
Frequency range	0.0005 - 199.99 kHz
DC current range	0.0000001 - 10 A
DC voltage range	0.0001 - 1000 V
Resistance range	0.1 - 50000000 Ω
Measuring category	CAT IV 600V
Placement supported	Handheld multimeter
Basic accuracy (frequency)	0.005%
Basic accuracy (DC current)	0.2%
Basic accuracy (DC voltage)	0.05%
Temperature measurement range	-200 - 1090 °C
Battery type	AAA
Power source	Battery
Battery technology	Alkaline
Number of batteries supported	3
Operating altitude	0 - 2000 m
Maximum storage altitude	10000 m
Operating relative humidity (H-H)	0 - 80 %

Weight and Dimensions

Depth	198.1 mm
Width	100 mm
Height	6.35 mm
Weight	698.5 g