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Power supplies & barriers for sensors & transmitters

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.

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.

Till Applicatorn

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

  • Active barrier RN221N with power supply for safe separation of 4...20 mA current circuits ©Endress+Hauser

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.

Fördelar

  • Wide range power supply, flexible power source

  • Power supplies for 2 or 4 wire transmitters

  • Galvanic isolation of 4 to 20 mA current circuits

  • International Ex approvals, Germanischer Lloyd / marine approval available

  • Sensor monitoring with early-warning system

Kontakt

Endress+Hauser AB
Box 1486 171 28 Solna , Sverige
Tel.: +46 (0)8 555 116 00
Fax: +46 (0)8 555 116 55
Skicka e-post www.se.endress.com

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