Safety barrier for serial communication B-RS

The task is to create a separator communication interface between spark safe circuits (devices located in an explosive environment) and other circuits that are located outside the potentially explosive zones. The device performs the function of intrinsically safe separator for the communication circuits of the conversion device. With its use is possible to connect standard devices for reading/writing data via RS485 or RS232 communication ( e.g. PC, PCL automat, external modem, etc.) to intrinsically safe conversion Correctors/Recorders.

Safety barrier for serial communication B/RS is supplied with 12V DC.

The barrier communication separator is located in a plastic box and is designed for mounting into a 35 mm DIN rail. For connecting wires, there is a terminal block, where the maximum diameter of the wires can have a cross-section of 2.5 mm2.

The communication barrier is available in two versions; in the basic version B-RS and in version B-RS/A for supplying the separator only from the battery.

Basic features

  • The spark-proof barrier for RS232 and RS485 serial interfaces of ELCOR, ELCORplus, ELCORplus indexer, DATCOM and DATCOMplus data loggers
  • Mounting on 35 mm DIN rail
  • Supply voltage 12V

Available variants

  • B-RS - The basic design of the separator is designed for systems whose power is derived from the mains voltage (Um = 250V). The B-RS can be powered e.g. from a non-backup power supply or from a backup power supply what is rechargeable mains charger, etc.
    The basic design of the B-RS has galvanic isolation between the input and intrinsically safe output circuits.
  • B-RS/A - The B-RS/A separator has a reduced self-consumption compared with the basic design. Its use is suitable for systems powered only by a battery, which can be recharged via solar panels (Um = 60 V).
    This power supply design has no galvanic isolation between the input and intrinsically safe output circuits (the negative input and output terminals are interconnected).


The device is designed and approved as a follow-up device. This means that only approved intrinsically safe devices complying with the intrinsically safe parameters specified in the EC-Type Examination Certificate may be connected to the intrinsically safe terminals of the instrument. The next connected equipment must be located outside the explosive zone operation.

Manual for accessories for ELCOR and ELCORplus in PDF


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