Analogue Signal Processing
The problem
particularly important to avoid mutual
interference of multiple sensor circuits,
for example, ground loops in interlinked ꢀCurrent transformer
measurement circuits. The wide range of ꢀVoltage transformer
products includes all functions for
converting separation and monitoring
signals. The different designs in
The product program
contains the following functions:
The real world can be measured in many
ways, for example, via temperature,
humidity, air pressure and so forth.
The parameters of these different physical
qualities change continuously. Elements
that monitor statuses and changes in sta-
tuses of a given environment, must reflect
these continual changes.
ꢀThermocouple conditioners for
resistance thermometers
ꢀFrequency signal conditioner
connection with the respective functions ꢀPotentiometer conditioner
cover practically all applications in
industrial measurement technology.
With these new products, Weidmüller
offers the possibility of taking into account ꢀAD/DA converter
the demands of modern automation
technology with the inclusion of analogue
signals. These products guarantee an
elementary function between signals from
the field and the further processing
systems. The mechanical characteristics
of these products correspond to those of
the well-known Weidmüller products and
are part of a continuous, ongoing
concept. The signal conditioners can be
combined together with other Weidmüller
products.
ꢀAC signal conditioner
ꢀBridge measurement conditioner
ꢀLimit value monitoring modules
Within the framework of industrial moni-
toring tasks, the statuses of an environ-
ment are monitored by using sensors.
These sensors should provide signals that
enable connected evaluating and monitor-
ing installations to draw detailed conclu-
sions concerning the status of, for exam-
ple, a production process. The sensor sig-
nals trace the continuous changes in the
monitored range. The signals can be in
analogue or digital form; which means in
normal cases, an electrical voltage or cur-
rent value is produced that corresponds
proportionally to the monitored physical
quantities. Increasing automation with the
intention of achieving or maintaining cer-
tain predetermined statuses makes the
processing of analogue values increasingly
important. This is also true of fields
beyond those where this has been neces-
sary and standard for a long time, for
example, processing technology in the
chemical industry. Standard electrical
signal values are the norm within the
framework of this
These products are categorised according
to functionality as pure signal conversion,
2-way-isolation, 3-way-isolation and as
passive separation.
They have been electrically and
mechanically designed to ensure that only
a minimum of wiring and maintenance
costs are necessary.
processing technology.
Current values from 0...20
mA, 4...20 mA or voltage
values from 0...10 V have
been introduced as
sensor output values for
differing physical
quantities. Weidmüller has
taken account the need
for increasing automation
with the processing of
these analogue signals,
and offers a wide range
of products that are
designed for handling
sensor signals.
This means, units are
made available for
standard signals (0...20
mA, 4...20 mA, 0...10 V)
that generate output
signal values proportional
to the variable input
signals, and at the same
time enable the safe
separation of, for
example, sensor circuits
of an evaluation circuit.
This safe separation is
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