When used for industrial monitoring applications, sensors can record surrounding environmental conditions. Sensor signals are used within the process to continually track changes to the area being monitored. Either digital or analogue signals can occur. Normally an electrical voltage or current value is produced which corresponds proportionally to the physical variable that is being monitored.
Analogue signal processing is required when automatic processes are being monitored to ensure that they maintain or reach some defined state.
This is particularly significant for process automation applications. Standardised electrical signals are typically used for process engineering. Analogue currents/voltages of 0(4)...20 mA/ 0...10 V have become established as the standard physical measurement value range.
Weidmüller's new products are in harmony with the growing trend towards automation. Our line of products for analogue signal processing have been designed with sensor signal requirements in mind.
These analogue signal processing products can be used in conjunction with other Weidmüller products and can be combined with one another.
Electrically and mechanically, they are designed so that they require a minimum of wiring effort.
These products can be adapted for a wide range of industrial and process automation applications – with housing and connection systems designed to fit the application.
The following functionality is included in the product line:
Isolating transformers, supply isolators and signal converters for DC standardised signals
Temperature measuring transformers for resistance thermometers and thermocouples,
Frequency converter
Potentiometer measuring transducers,
Bridge measuring transducers (strain gauges)
Trip amplifiers and modules for monitoring electrical and non-electrical process variables
AD/DA converter
Displays
Calibration devices
The products mentioned are available as pure signal converters, 2-way/3-way isolators, supply isolators, passive isolators or as trip amplifiers.
ACT20X is a product line of signal converters for the Ex zone. With 11 mm width per channel, these compact devices need little space in the electrical cabinet. The signal converters have been specifically developed for process automation applications in hazardous (Ex) and non-hazardous zones
The ACT20X series is capable of processing all standard input signals (2-wire HART, NAMUR, RTD, thermocouple and DC signals) from Ex zone 0. Alternatively, it can provide digital and analogue signals to control the field devices located within the explosion risk zone.
Faults and error messages can be forwarded via the integrated relay outputs. This helps identify errors quickly and increases system availability.
The WI-Manager configuration software is based on FDT (Field Device Tool) technology. The software allows you to configure all ACT20X devices with your PC so that they can be custom-fit to a wide variety of process applications.
Weidmüller provides a Device Type Manager (DTM) that can be used in any FDT-based frame.
International approvals such as IECEx, ATEX, FM and UL allow for use around the world.
Signal conditioners and isolating amplifiers are universally suited to detect electrical and physical values, separate them electrically and to transform them into normalised DC current/voltage signals. These include:
Standard signals (0 - 10 V, 4 - 20 mA, etc.)
RTD sensor temperature signals like PT 10, PT 100, PT 1000
Temperature signals from thermocouples (of type K, J, T, S, E, N, R, B)
Measuring voltage and current
Frequency signals (NPN/PNP/Namur initiators)
Bridge measuring signals (strain gauges)
They are electrically and mechanically designed so that they require a minimum of wiring effort. These products can be for a wide range of industrial and process automation applications – with housing and connection systems designed to fit the application.
The following functionality is included in the product line:
Signal/measurement converters and isolating amplifiers for analogue DC signals
Temperature converter for resistance thermometer and thermoelements
Frequency converter
Potentiometer measuring transducers,
Bridge measuring transducers (strain gauges)
Measuring transducers for AC/DC currents
Measuring transducers for AC voltages
The products mentioned are available as pure signal converters, 2-way/3-way isolators, or as passive isolators.
With the ACT20M-BAI-(2)AO-S, Weidmüller presents more converters forming part of the ACT20M family. They are designed for sensors / measuring sensors which represent the values in a measurement range of negative and positive signals (bipolar). Bipolar voltages and bipolar currents are galvanically isolated and converted into standardised analogue signals.
A choice of 6 standardised output values is available with the ACT20M-BAI-AO.
A choice of 6 standardised output values or 2 bipolar analogue current outputs is available with the den ACT20M-BAI-2AO.
The monitoring of physical variables like filling levels, temperatures, revolutions per minute, weights, frequencies, currents and voltages allows for the continuous control and monitoring of processes, equipment or system parts.
Here the sensor signals are detected on the input side, electronically evaluated and the relevant limits (min/max) are provided for the use of external devices via digital switching outputs (relays/transistors).
The switching points for the min/max limit-values, switching hysteresis, delay times and the individual switching behaviour (high trip/low trip) can be individually set.
Any deviations or signal interruptions can be evaluated as operational faults. Targeted measures to rectify the problem can then be initiated.
Weidmüller's process instruments from the AR, UPI, R and DPA series are part of a wide-ranging line of innovative products designed for analogue signal processing. These instruments are specifically designed for the complex and demanding requirements of modern process automation applications.
The product series, ranging from simple dedicated units to complex microprocessor-controlled devices, can be used with almost all signal types and measurement sensors.
The products also offer a variety of integrated functions, such as timing delays, adjustable threshold values, high-/low-trip switching behaviour and scalable displays.
With the ACT20C, Weidmüller is presenting a completely new type of signal converter. The compact module is equipped with an Ethernet connection which offers extensive diagnostic and status information. ACT20C can be configured directly with the "WI-Manager" software or via an Ethernet network. The software is based on the supplier-independent FDT/DTM technology.
With the ACT20C, Weidmüller is presenting a completely new type of signal converter. The compact module is equipped with an Ethernet connection and provides, in addition to signals, precise information on the status of sensors, signal processing and cabling.
As a signal converter, the ACT20C isolates, scales and converts analogue current and voltage signals, and can be configured directly with the "WI-Manager" software or via an Ethernet network. The software is based on the supplier-independent FDT/DTM technology. The ACT20C has been designed specifically for process automation in order to continuously forward measured values and status information to networking devices. During standard operation, malfunction, maintenance or configuration via the network, this allows a display of the current status. In case of error, the ACT20C supplies precise information for error analysis and can therefore contribute to higher system availability.
In industrial and process automation, displays provide a visual rendering of data and an analogue presentation of electrical and non-electrical measurements.
They provide essential diagnostics, logging and operational guidance when operating machines and plant facilities. Displays make dialogue-based operations possible. They show measurements, error messages and also allow processes to be monitored.
Displays can also feature digital and analogue outputs, interference-suppression functions, or the ability to calculate certain process variables internally. This turns a simple display into a high-quality process interface capable of independently controlling sub-processes.
A/D converters convert analogue signals into digital signals. They are used to convert standardised current and voltage signals into 8-bit digital signals.
They are very well suited for use in monitoring processes.
D/A converters convert digital signals into analogue signals. They are used for converting 8-bit digital signals into standardised analogue current and voltage signals.
D/A converters are very well suited for use in monitoring processes.
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