Instrumentation & Measurement Magazine 26-4 - 46

the IEC 62053 series. Briefly, the first difference among them is
the range of validity. Clear from its name, the IEC 62053 series
is an international set of documents, while the other two have
a European validity. In detail, the EN 50470 has been written to
be compliant with the European Directive, also known as the
Measuring Instrument Directive (MID). The MID is a key standard
that does not cover only energy meters but all kinds of
meters responding to reasons of public interest, public health, safety
and order, protection of the environment and the consumer, of levying
taxes and duties and of fair trading, which directly and indirectly
affect the daily life of citizens [14].
Another difference among the documents is the accuracy
classes (ACs) that have been specified. The European documents
use accuracy classes A, B, and C, while the IEC ones
adopt 0.2S, 0.5S, 1, 2. The two sets of ACs are similar but not
identical, resulting in some difficulties depending on which
marking an EM adopts. However, both sets of ACs are based
on the same index to evaluate an EM. Such index is the percentage
error:

Instrumentation & Measurement Magazine 26-4

Table of Contents for the Digital Edition of Instrumentation & Measurement Magazine 26-4

Instrumentation & Measurement Magazine 26-4 - Cover1
Instrumentation & Measurement Magazine 26-4 - Cover2
Instrumentation & Measurement Magazine 26-4 - 1
Instrumentation & Measurement Magazine 26-4 - 2
Instrumentation & Measurement Magazine 26-4 - 3
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Instrumentation & Measurement Magazine 26-4 - 29
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Instrumentation & Measurement Magazine 26-4 - 45
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Instrumentation & Measurement Magazine 26-4 - 48
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Instrumentation & Measurement Magazine 26-4 - 63
Instrumentation & Measurement Magazine 26-4 - Cover3
Instrumentation & Measurement Magazine 26-4 - Cover4
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