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Precision in Practice
Achieving the best results with precision Digital Multimeter
measurements
Paul Roberts
Fluke Precision Measurement Ltd.
Abstract
Digital multimeters are one of the most common measurement tools, ranging from simple
handhelds to the more sophisticated precision metrology grade instruments. These precision
dmms offer a range of specifications, features, and capabilities intended to allow users to make
the best measurements for their particular application. However, choosing and applying the most
appropriate dmm configuration can be a complex task and may often lead to unexpected results,
even for experienced users. This paper explores and explains how precision dmms operate, and
provides practical help and guidance on using advanced dmm features with the objective of
helping users avoid sources of error in precision applications.
Introduction
Modern precision digital multimeters are sophisticated measuring instruments offering more than
just the ability to measure voltage, current and resistance. The accuracy and stability of
metrology grade instruments approach the levels available from the standards used to calibrate
them. Such high performance allows these multimeters to be used in place of many traditional
laboratory instruments such as voltage dividers and resistance bridges[1]. Not only do metrology
grade multimeters provide sufficient precision, they also bring a significant improvement in
usability and throughput compared to traditional techniques