Passive barrier

1 or 2-channel passive barrier

RB223

from $193.-
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      • Space-saving single/dual channel version

      • Can be used up to SIL3

      • Bidirectional HART®  transmission

         

     

    Specs at a glance

    Certificates

    ATEX II (1) GD EEx ia IIC/IIB

    ATEX II (1) GD EEx ib IIC/IIB
    HART® communication Built-in resistance for HART® communication 232 Ω
    Version Optional dual-channel version
    Signal transmission
    • From non-Ex to Ex-areas
    • From Ex to non-Ex areas

    Passive barrier RB223

    Product / VersionPrice / pcs. in USDOrder code
    ApprovalChannelTransmission direction1 to 34 to 1011+
    Classified area1xLPS hazardous area to non-hazardous area220.-204.-193.- RB223-x1A
    Select options
    LPS non-hazardous to hazardous area220.-204.-193.- RB223-x1B
    Select options
    2xLPS hazardous area to non-hazardous area305.-284.-269.- RB223-x2A
    Select options
    LPS non-hazardous to hazardous area305.-284.-269.- RB223-x2B
    Select options

    Accessories

    Product / VersionPrice / pcs. in USDOrder code
    Housing Field, R4 182x180x165, 5xM20, PC Protection housing Minitec. Synthetic housing with transparent cover. Protection IP66. 4x22.5mm / 2x45mm. Usage: FTL825.103.82 52010132
    Add to cart

    Prices valid until 31.12.2020 in USD per unit (not including shipping and applicable sales tax). See
    Endress+Hauser Terms and Conditions

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  • Application

    The RB223 isolator can be used to galvanically isolate active signal circuits (0 to 20 mA) in three applications:

    • Transmission from non-Ex to Ex areas e.g for active adjusters, controllers or indicators
    • Transmission from Ex to non-Ex areas for connection of active, intrinsically safe circuits to the PLC
    • Transmission from Ex to non-Ex areas for supply of intrinsically safe transmitters with non-intrinsically safe transmitter power supply

    Function

    The passive isolator transmits signal circuits from the input to the output by galvanic isolation. A HART® signal is also transmitted. The device is optionally available with intrinsically safe input/ output. The device is loop-powered and does not need any additional Ex area supply voltage of its own.

    Application Example

    Passive barrier RB223 an application example

    a) Ex area

    b) Non-Ex area

    c) Valve, actuator, display

    d) Active

    e) Passive

    f) Process transmitter

    g) 2-wire device (sensor, actuator)

    h) 4-wire device (sensor, actuator)

    i) Power supply

  • Technical data

    Current transmission direction Non-Ex → Ex; Input
    Function range 0 to 40 mA (to 22 mA for specified accuracy)
    Effective voltage Max. < 26 V for specified accuracy
    Short circuit current Imax = 100 mA
    Limiting voltage Umax = 30 V
    Current transmission direction Non-Ex → Ex; Output
    Function range 0 to 40 mA (to 22 mA for specified accuracy), max. current depends on load
    Load Load resistance max. 0 to 600 Ω
    Type of protection Intrinsically safe according to ATEX:
    • Max. voltage: Uo ≤ 28 V
    • Max. current: Io ≤ 93 mA
    • Max. power: Po ≤ 660 mW
    Current transmission direction Ex → Non-Ex; Input
    Function range 0 to 40 mA (to 22 mA for specified accuracy)
    Type of protection Intrinsically safe according to ATEX:
    • Max. voltage: Ui ≤30 V
    • Max. current: Ii ≤100 mA
    • Max. power: Pi ≤750 mW
    Current transmission direction Ex → Non-Ex; Output
    Function range 0 to 40 mA (to 22 mA for specified accuracy), max. current depends on load
    Load Load resistance max. 0 to 600 Ω
    Galvanic isolation
    Test voltage

    >1.5 kV AC between input and output

    >1.5 kV AC between the channels
    Power supply
    Starting current Own consumption < 50 µA
    Voltage drop

    <(1.9 V + 400 Ω × current loop) for nonEx → Ex

    <(3.9 V + 120 Ω × current loop) for Ex → nonEx
    Power loss

    <0.2 W at 20 mA (per channel) without HART®

    <0.3 W at 20 mA (per channel) with HART®
    Accuracy
    Current transmission < ±10 µA + 0.15 % from measured value 
    Temperature drift ≤ ±0.01 % / 10 K
    Operating conditions
    Ambient temp. –20 to +60 °C (–4 to +140 °F)
    Storage temperature –20 to +80 °C (–4 to +176 °F)
    Climate class To IEC 60 654-1 class B2
    Relative humidity <95 % without condensation
    EMC Interference immunity to IEC 61 326 (industry) and NAMUR NE21
    Mechanical construction
    Dimensions
    (W × H × D)    		 22.5 × 96 × 112 (0.89" × 3.78" × 4.33") for DIN rail to IEC 60 715 TH35
    Weight Approx. 150 g (5.29 oz.)
    General
    Communication HART® protocol: bi-directional possible
    Frequency response 650 Hz for 500 Ω load for nonEx -> Ex 1300 Hz for 500 Ω load for Ex -> nonEx
    Approvals
    Ex approvals

    ATEX II (1) GD [EEx ia] IIC/IIB

    ATEX II (1) GD [EEx ib] IIC/IIB
    SIL Can be used up to SIL3

    Dimensions in mm (inches)

    Dimension of an isolator RB223

    Installation according to instruction manual

    Electrical connection

    Ex → Non-Ex 2 channel

    Passive barrier RB223 electrical connection 1

    a) Non-Ex

    b) channel 2

    c) channel 1

    Non-Ex → Ex 2 channel

    Passive barrier RB223 electrical connection 2

    a) Non-Ex

    b) channel 2

    c) channel 1

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