
Specs at a glance
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Input
2 x analog 4...20 mA
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Output
2 x analog 4...20 mA
Field of application
The RB223 passive barrier 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.
Separation of active 0/4 to 20 mA signals from transmitters, valves and adjusters.
Benefits
Compact side-by-side housing for DIN rail
Space-saving one-channel and two-channel version
No power supply necessary
International Ex approvals; Can be used up to SIL 3
Bidirectional HART® transmission
Communication sockets for HART® + integrated HART® resistor for sensor configuration
Fundamental selection
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Simple products
- Easy to select, install and operate
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
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Fundamental selection Meet your basic measurement needs |
Technical excellence
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Simplicity
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Lean selection Handle your core processes easily |
Technical excellence
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Simplicity
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Extended selection Optimize your processes with innovative technologies |
Technical excellence
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Simplicity
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Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
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Measuring principle
Passive barrier
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Measuring principle
Power supply
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Function
Passive barrier for safe seperation of 4...20 mA current circuit
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Loop power supply
Loop powered
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Auxiliary power supply / Loop power supply
Loop powered
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Input
2 x analog 4...20 mA
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Output
2 x analog 4...20 mA
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Certificates
ATEX II(1)GD(Ex ia)IIC
FM AIS I,II,III/1/ABCDEFG1
CSA (Ex ia) I,II,III/1/ABCDEFG1
SIL -
Operation
HART
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Prices per piece
- Optional add-ons
Individual configuration
Often bought together
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