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RN22 intrinsically safe isolating barrier, power supply and signal doubler for hazardous areas

RN22 active barrier

Active barrier, 1/2-channel/SD for 4 to 20 mA, HART® transparent with 24 V DC as well as active/passive input and output, optionally with SIL and Ex

RN22
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RN22 intrinsically safe isolating barrier, power supply and signal doubler for hazardous areas
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©Endress+Hauser

RN22 active barrier, power supply, analog signal doubler

The RN Series interface devices with RN22 active barrier
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©Endress+Hauser

RN Series interface devices including the RN22 active barrier

RN Series interface modules and RN22 active barrier installed in a control cabinet
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©Endress+Hauser

RN Series interface modules including RN22 being commissioned in a control cabinet

RN22 active barrier, power supply, analog signal doubler

Specs at a glance

  • Input

    0/4…20 mA / HART
    feeding/not feeding

  • Output

    0/4…20 mA / HART
    active/passive

  • Power Supply

    24 V DC

Field of application

The 1- or 2-channel RN22 active barrier powers analog instrument loops and safety instrumented systems up to SIL 2 (SC 3). The intrinsically safe, HART® transparent interface establishes a reliable link between field devices and process control. It interfaces with 2-/4-wire devices in hazardous areas and provides a second galvanically isolated signal output acc. to NAMUR NE 175. This opens a second channel for the process optimization domain without affecting the traditional automation system.

  • Single- or two-channel active barrier, power supply or signal doubler

  • 0/4 to 20 mA analog signal transmission (NAMUR NE 43) and galvanic isolation

  • Intrinsic safety for operation in hazardous areas (Zone 2)

  • Bidirectional HART® communication (transparent)

  • 2- and 4-wire capability for instruments in hazardous areas (Zones 0/20)

  • Ambient temperature range: -40 … 60 °C (-40 … 140 °F)

Benefits

  • Intrinsically safe interface device suited for use in safety instrumented systems up to SIL 2 (SC 3) in accordance with IEC 61508

  • Quick and easy wiring with screw or push-in terminals or power supply via power rail T-connector

  • Easy access to frontside HART® connection taps

  • Compact housing: up to two channels on 12.5 mm (0.49 in) for efficient use of space in control cabinets

Videos

  • Explained in under 3 minutes - RN22 and RN42

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