The Endress+Hauser Group

Media center


Your career with Endress+Hauser

Product tools

Contact Information

Transmitter supply for DIN rail

Power supply for two 2 wire sensors or transmitters

  • Power supply RNS221 ©Endress+Hauser

The power supply has two galvanically isolated outputs for supplying voltage to sensors and transmitters. A built-in communication resistance enables bidirectional HART® communication with SMART sensors and transmitters.


  • Galvanic isolation between all circuits

  • Sockets and built in 250 Ohm resistor for HART® communication

  • Wide-range power supply 20 to 250 V AC/DC, 50/60 Hz

  • Top hat DIN rail mounted housing to IEC 60715

Field of application

The unit supplies two 2 wire sensors or transmitters galvanically isolated. This is only valid for non-Ex areas.
Using the HART® communication sockets bi-directional communication to SMART transmitters, (for setting up etc.).

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: NX9120, NX9121


Endress+Hauser Instruments International AG
ул. Абдуллиных 66 050010, Алматы Kazakhstan
Tel.: +7 727 345 06 60
Fax: +7 727 345 06 61

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Find out more here close

Please select your country