CEI EN 60770-1

BILINGUAL

Scope and object

This part of IEC 60770 is applicable to transmitters which have
either a standard analogue electric current output signal or a
standard pneumatic output analogue signal in accordance with IEC
60381-1 or IEC 60382. The tests detailed herein may be applied to
transmitters which have other output signals, provided that due
allowance is made for such differences.

For the evaluation of the intelligent transmitters see IEC
60770-3.

For certain types of transmitters where the sensor is an
integral part, other specific IEC or ISO standards may need to be
consulted (e.g. for chemical analysers, flowmeters, etc.)

This standard is intended to specify uniform methods of test for
the evaluation of the performance of transmitters with pneumatic or
electric output signals.

The methods of evaluation specified in this standard are
intended for use by manufacturers to determine the performance of
their products and by users or independent testing establishments
to verify manufacturers' performance specifications.

The test conditions defined in this standard, for example the
range of ambient temperatures and power supply, represent those
which commonly arise in use. Consequently, the values specified
herein should be used where no other values are specified by the
manufacturer.

The tests specified in this standard are not necessarily
sufficient for instruments specifically designed for unusually
arduous or safety related duties. Conversely, a restricted series
of test may be suitable for instruments designed to perform within
a more limited range of conditions.

When a full evaluation in accordance with this standard is not
required, those tests which are required shall be performed and the
results reported in accordance with those parts of the standard
which are relevant.