Power supplies & barriers
Power supplies & barriers for sensors & transmitters
Power supplies & barriers supplies e.g. a transmitter with power, if required also in the Ex-area, and then transmits the galvanically isolated signal. With the optionally available HART® monitoring the status of the transmitter is monitored. Thus even just briefly occurring errors can be easily located.
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
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| FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
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Simplicity
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Power supplies & barriers
Our product finder helps you to search for suitable measuring devices, software or system components via product characteristics. Applicator leads you through an individual product selection via application parameters.
Portfolio description
Our portfolio of DIN rail power supplies & barriers provides:
Power supplies for 2 or 4 wire transmitters
Active barrier with power supply for safe separation of 4...20 mA current circuits in one device
Power supplies & barriers with bidirectional HART® transmission, communication sockets for HART® and integrated HART® resistor for sensor configuration
Measuring principle / application example
Application example - power supply of a temperature transmitter:
If a 4 to 20 mA HART® head transmitter is installed in a thermometer it has to be supplied with power. An active barrier supplies the head transmitter with power, if required also in the Ex-area, and then transmits the galvanically isolated signal. With the optionally available HART® monitoring the status of the head transmitter is monitored. If an error arises a relay at the active barrier sends an alarm.
Application example for a passive barrier with SPS:
If a sensor in the Ex-area is to be supplied via a SPS the use of a passive barrier is necessary. The passive barrier transmits the supply from the Non-Ex area into the Ex-area and sends back the 4 to 20 mA signal. The passive barrier does not require a power supply as it receives its power from the 4 to 20 mA loop.
Benefits
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Wide range power supply, flexible power source
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Power supplies for 2 or 4 wire transmitters
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Galvanic isolation of 4 to 20 mA current circuits
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International Ex approvals, Germanischer Lloyd / marine approval available
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Sensor monitoring with early-warning system