Information

Fluke measurement
specification
philosophy
The accuracy specifications for the
Fluke 2680 Series, 2638A Hydra
Series III, and NetDAQ Series instru-
ments are calculated conservatively
so that they include three standard
deviations from the nominal value—
this is referred to as 3-Sigma. More
than 99.7 % of the instruments
produced will perform within the
error limits. Rigorous screening and
testing procedures catch and correct
the three out of 1,000 instruments
which could have fallen outside
their published specifications.
Many other products use a “root-
sum-square” scheme, or only specify
the error band within one standard
deviation (1-Sigma) of nominal. This
method produces a specification that
appears to be more accurate, but
the resulting “typical” specifications
correctly characterize only ~66 %
of the instruments produced. This
method is kind of like knowing how
accurate “most of the instruments”
will be. The 3-Sigma specifications
for the 2680 Series, Hydra, and
NetDAQ tell you how accurate ALL
of the instruments will be. Note:
Listed specifications are summary
in nature. Accuracies listed are most
favorable within the stated range.
You may obtain detailed specifica-
tions at www.flukecal.com
For complete product specifica-
tions or information on other Fluke
products, contact your local Fluke
sales representative.
Customer support
Choosing a data acquisition system
that meets your specifications is
only the first step in making a
smart equipment investment. You
also need to choose a company that
can help you get up and running
quickly and easily and that will
support you throughout the life of
the system. Fluke has addressed
these issues by assembling a wide
variety of services that are solidly
backed by our sales and applica-
tion support teams, world-wide
service centers, and state-of-the art
parts supply system. Our offerings
range from comprehensive service
programs and technical training to
custom programming and system
consulting.
Service CarePlans
Fluke offers various service plans
to suit you individual needs.
SilverCarePlans are warranty exten-
sions that add years onto your new
product warranty. Gold CarePlans
provide extended warranty coverage
and annual calibration for your
product and covers return freight.
CarePlans are available for all Fluke
Data Acquisition products as well
as most other Fluke products To
learn more go to www.flukecal.
com/support/service-plans.
Locations to cover necessary repairs
and performance testing, including
parts, labor, and return surface
freight costs. Warranty extensions
may not be available in all coun-
tries. Contact your local Fluke sales
office for specific details.
Fluke Corporation
PO Box 9090,
Everett, WA 98206 U.S.A.
Fluke. Keeping your world up and running.
®
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U.S.A. [phone] or Fax [phone]
In Europe/M-East/Africa [phone] or Fax [phone]
In Canada (800)-36-FLUKE or Fax [phone]
From other countries [phone] or Fax [phone]
Web access: http://www.fluke.com
©2007-2015 Fluke Corporation. Specifications subject to change without notice. NetDAQ
is a trademark of Fluke Corporation. Microsoft, Windows, and Windows NT are registered
trademarks of Microsoft Corporation. Printed in U.S.A. 3/2015 1267610e-en
Modification of this document is not permitted without written permission from
Fluke Corporation.