Active barrier with power supply for safe separation of 4 to 20 mA current signal circuits. The unit has an intrinsically safe input. The current transmitted from the source to the input circuit (4 to 20 mA) is linearly transmitted to the output. 

The unit creates a safe galvanic isolation between input and output of the circuits for safe separation between hazardous and nonhazardous areas. A built-in loop power supply can supply connected sensors with the necessary energy. A current signal is available at

the output (passive output) for connection to further instrumentation. Bi-directional HART® communication with SMART transmitters is possible using the built-in communication sockets (with resistance R = 250 Ω). 

16.7V ± 0.2V (at I = 20 mA)

328 Ω 

27.3 V 

87.6 mA 

597 mW 

86 nF [EEx ia] IIC; FM IS CL. I, Div. 1, Grp. A, B
683 nF [EEx ia] IIB, or IIA; FM IS CL I, Div. 1, Grp. C, D 

5.2 mH [EEx ia] IIC; FM IS CL. I, Div. 1, Grp. A, B
18.9 mH [EEx ia] IIB, or IIA; FM IS CL I, Div. 1, Grp. C, D 

24 V ± 10%

0 to 700 Ω (without communication resistance) 

To all other current circuits