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8447170000 Datasheet(PDF) 2 Page - Weidmuller |
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8447170000 Datasheet(HTML) 2 Page - Weidmuller |
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2 / 58 page  157 The problem 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. 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 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 particularly important to avoid mutual interference of multiple sensor circuits, for example, ground loops in interlinked measurement circuits. The wide range of products includes all functions for converting separation and monitoring signals. The different designs in connection with the respective functions cover practically all applications in industrial measurement technology. With these new products, Weidmüller offers the possibility of taking into account 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. They have been electrically and mechanically designed to ensure that only a minimum of wiring and maintenance costs are necessary. The product program contains the following functions: Current transformer Voltage transformer Thermocouple conditioners for resistance thermometers Frequency signal conditioner Potentiometer conditioner AC signal conditioner Bridge measurement conditioner Limit value monitoring modules AD/DA converter These products are categorised according to functionality as pure signal conversion, 2-way-isolation, 3-way-isolation and as passive separation. Analogue Signal Processing |
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