Endress Hauser AG

Model RN221N - Active Barrier with Optional HART Diagnosis

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

  • Wide range power supply, flexible power source

  • Compact side by side DIN rail housing

  • International Ex approvals, Germanischer Lloyd / 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

  • 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

Power Supplies & Barrier

  • Measuring principle

    Active barrier

  • Measuring principle

    Power supply

  • Function

    Active barrier with power supply for safe seperation of 4...20 mA current circuit

  • Loop power supply

    20...250 V DC/AC

  • Power Supply

    Not defined

  • Auxiliary power supply / Loop power supply

    20...250 V DC/AC

  • Input

    1 x analog 4...20 mA

  • Output

    1 x analog 4...20 mA

  • Software functions

    Not defined

  • Certificates

    ATEX II(1)GD(Ex ia)IIC

    FM USA IS

    FM USA NI

    CSA IS

    CSA NI

    IECEx Ex ia

    TIIS Ex ia

    GOST Ex i

    Marine approval

    SIL

    Hygienic WHG

  • SIL

    Not defined

  • Operation

    HART

Acquisition / Evaluation

  • Measuring principle

    Active barrier

  • Function

    Active barrier with power supply for safe seperation of 4...20 mA current circuit

  • Certification

    ATEX II(1)GD(Ex ia)IIC

    FM USA IS

    FM USA NI

    CSA IS

    CSA NI

    IECEx Ex ia

    TIIS Ex ia

    GOST Ex i

    Marine approval

    SIL

    Hygenic WHG

  • Input

    1 x analog 4...20 mA

  • Output

    1 x analog 4...20 mA

  • Relay output

    1 x no contact

  • Auxiliary power supply / Loop power supply

    20...250 V DC/AC

  • Dimensions (wxhxd)

    22.5 x 110 x 112 mm

    (0.89' x 4.33' x 4.41')

  • Operation

    HART

  • Measuring principle

    Active barrier

  • Function

    Active barrier with power supply for safe seperation of 4...20 mA current circuit

  • Certification

    ATEX II(1)GD(Ex ia)IIC

    FM USA IS

    FM USA NI

    CSA IS

    CSA NI

    IECEx Ex ia

    TIIS Ex ia

    GOST Ex i

    Marine approval

    SIL

    Hygenic WHG

  • Input

    1 x analog 4...20 mA

  • Output

    1 x analog 4...20 mA

  • Relay output

    1 x no contact

  • Auxiliary power supply / Loop power supply

    20...250 V DC/AC

  • Dimensions (wxhxd)

    22.5 x 110 x 112 mm

    (0.89' x 4.33' x 4.41')

  • Operation

    HART

  • Measuring principle

    Active barrier

  • Function

    Active barrier with power supply for safe seperation of 4...20 mA current circuit

  • Certification

    ATEX II(1)GD(Ex ia)IIC

    FM USA IS

    FM USA NI

    CSA IS

    CSA NI

    IECEx Ex ia

    TIIS Ex ia

    GOST Ex i

    Marine approval

    SIL

    Hygenic WHG

  • Input

    1 x analog 4...20 mA

  • Output

    1 x analog 4...20 mA

  • Relay output

    1 x no contact

  • Auxiliary power supply / Loop power supply

    20...250 V DC/AC

  • Dimensions (wxhxd)

    22.5 x 110 x 112 mm

    (0.89' x 4.33' x 4.41')

  • Operation

    HART

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