Try searching by key words, order- or product code or serial number e.g. “CM442” or “Technical information”
Enter at least 2 characters to start the search.
Product picture active barrier RN221N

RN221N
Active barrier with optional HART® diagnosis

Active barrier with power supply for safe separation of 4...20 mA current circuits

RN221N
Loading price
Prices temporarily unavailable
Price on request
activating price
price: provide information
from CHF ??.-
Active barrier RN221N
  • F
  • L
  • E
  • X
©Endress+Hauser
Active barrier RN221N
  • F
  • L
  • E
  • X
©Endress+Hauser

Specs at a glance

  • Input

    1 x analog 4...20 mA

  • Output

    1 x analog 4...20 mA

Field of application

The active barrier RN221N 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. If an error arises a relay at the RN221N sends an alarm. The relay has to be actively set back. Thus even just briefly occurring errors can be easily located.

  • Galvanic isolation of 4 to 20 mA current circuits

  • Removing large loop circuits

  • Powering 2 wire transmitters

  • Monitoring of SMART transmitters with early-warning system

  • Intrinsically safe sensor supply for Ex-area

Benefits

  • Wide range power supply, flexible power source

  • Compact side by side DIN rail housing

  • International Ex approvals; marine approval

  • Bidirectional HART® transmission. Communication sockets for HART® sensor setting up. Evaluation of status information from connected transmitter with HART® protocol.

  • Primary or secondary master operating mode, automatic selection

  • Sensor monitoring with early-warning system

  • Manual or automatic reset of the relay contact

Fundamental selection

  • Simple products

  • Easy to select, install and operate

Technical excellence

Simplicity

FLEX: Fundamental ©Endress+Hauser

  • Simple products

  • Easy to select, install and operate

Technical excellence

Simplicity

  • Standard products

  • Reliable, robust and low-maintenance

Technical excellence

Simplicity

  • High-end products

  • Highly functional and convenient

Technical excellence

Simplicity

  • Specialized products

  • Designed for demanding applications

Technical excellence

Simplicity

Variable

FLEX selections Technical excellence Simplicity
  • F
  • L
  • E
  • X

Fundamental selection

Meet your basic measurement needs

Technical excellence
Simplicity
  • F
  • L
  • E
  • X

Lean selection

Handle your core processes easily

Technical excellence
Simplicity
  • F
  • L
  • E
  • X

Extended selection

Optimize your processes with innovative technologies

Technical excellence
Simplicity
  • F
  • L
  • E
  • X

Xpert selection

Master your most challenging applications

Technical excellence
Simplicity

Variable
Loading alternative products

Predecessor

Success stories

Compare products
We use cookies to store information on your device which helps us to customize and improve your interactions with us. More on cookies can be found in the privacy policy.