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Glossary
Analog
A signal type which represents data using continuously varying, measurable and physical
quantities, e.g. current or voltage. Opposite to digital. The range between 4 and 20 mA is
often used to transfer analog signals.
Analog-to-digital converter
An analog-to-digital converter is an interface between the analog environment and the
digitally working computers. Only then can the computers be used for measurement and
control tasks.
Analog-to-digital converters convert analog input signals to digital signals. Analog
measurement data is thus converted into digital information. On the other hand, a digital-to-
analog converter coverts digital information into analog signals.
Asset Management Solution (AMS)
Software package by Emerson Process. The AMS Device Manager, which is somewhat
similar to the PDM, is a part of the package. The SIPART PS2 (HART) and SIPART PS2 FF
are integrated into the AMS Device Manager, i.e. AMS can be used to communicate with
these devices, especially for the configuration purpose.
ATEX
ATEX is the abbreviation of the French term "Atmosphère explosible". ATEX stands for both
the directives of the European Community for the field of explosion protection: the ATEX
product directive 94/9/EC and the ATEX operation directive 1999/92/EC.
Auxiliary voltage
Auxiliary voltage is an electric supply or reference voltage that is required by many electric
circuits in addition to the standard supply. The auxiliary voltage can be extremely stabilized,
have a specific level or polarity and/or other properties having decisive significance for the
correct functioning of parts in the circuit.
Conduit piping system
A piping system for the American market, wherein the electric and pneumatic lines are
protected by a casing.
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
277
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