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RNO22 - 24 V DC, HART® transparent output isolating amplifier for analog 0/4 to 20 mA signals

RNO22 output amplifier

Output amplifier, 1/2-channel for 4 to 20 mA, HART® transparent with 24 V DC and line fault detection, optionally with SIL and Ex

RNO22
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RNO22 output isolating amplifier with 1 or 2 channels
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©Endress+Hauser

RNO22 output isolating amplifier with 1 or 2 channels

RN Series interface devices with the RNO22 output amplifier module
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©Endress+Hauser

RN Series interfaces including the RNO22 output amplifier

The RN Series interface devices with RNO22 output amplifier module installed in a control cabinet
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©Endress+Hauser

RN Series interfaces with RNO22 output amplifier module being commissioned

RNO22 output isolating amplifier with 1 or 2 channels

Specs at a glance

  • Input

    0/4…20 mA / HART
    passive

  • Output

    0/4…20 mA / HART
    active

  • Power Supply

    24 V DC

Field of application

The RNO22 output isolating amplifier is used to safely control active components such as control valves, actuators, I/P converters or indicators. The intrinsically safe device separates and transmits analog 0/4 to 20 mA signals and offers bidirectional HART® transparency for digital communication with smart actuators.
The compact interface device with up to two galvanically isolated channels enables open- and short-circuit monitoring for reliable operation of critical equipment.

  • 1- or 2-channel output isolating amplifier

  • Reliable control of active components such as control valves, current-to-pressure transducers

  • Transmission and galvanic isolation of 0/4 to 20 mA signals

  • Intrinsically safe [Ex-ia], installation in Ex Zone 2

  • Suited for use in safety instrumented systems up to SIL 2 (SC 3) in accordance with IEC 61508

  • Bidirectional transmission of digital HART® communication signals

  • Ambient temperature range: –40 to 70 °C (–40 to 158 °F)

Benefits

  • Safe and reliable control of active components in hazardous areas

  • Quick and easy wiring and commissioning: plug-in terminals, power supply via DIN rail bus connector

  • Compact housing: up to 2 channels on 12.5 mm (0.49 in) for efficient use of space in control cabinets

  • Accurate and reliable signal transmission

  • Line break and short-circuit monitoring

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