Technical Specifications:​ 8 analog inputs 4–20 mA Ex i and 4 analog outputs 4–20 mA Ex i; PROFIBUS-DP over RS485 screw terminals; supply 24 V DC 20–30 V; input/output resolution 16-bit for Ex ia/ib versions; module IP66, terminals IP20, terminals with cover IP30; operating temperature -25°C to +60°C; weight about 2.1 kg.

Functional Features:​ Intrinsically safe I/O; HART pass-through for smart transmitters; galvanic isolation between supply, bus and I/O; rotary address coding; open/short diagnostics; front LEDs for ON, BF, SF and per-channel status.

Application Scenarios:​ Refinery and petrochemical hazardous areas, pharmaceutical and chemical batch control, offshore and onshore gas facilities, dust Zone 21 areas requiring Ex i analog control.

Performance Parameters:​ 8-input and 4-output 4–20 mA handling; 16-bit conversion where Ex ia/ib; diagnostic reporting of disconnection and short circuit through LEDs and PROFIBUS telegrams.

Material And Structure:​ Flameproof thermoplastic clip-on enclosure for TH35 rail; PROFIBUS terminal block; Ex i terminal block; front rotary switch and LED array.

Working Principle:​ Powers and acquires Ex i transmitters on the input side, converts HART digital data transparently where enabled, conditions controller commands into Ex i 4–20 mA outputs, isolates all domains and exchanges process/diagnostic data over PROFIBUS-DP.

Installation Requirements:​ Mount on TH35 rail in a certified Ex assembly; supply 20–30 V DC; set PROFIBUS address with the rotary switch; use Ex i certified cables, glands and grounding; separate bus and analog screening according to the BARTEC manual.

Usage Notes:​ Verify the exact suffix/certification label because 230H variants may differ in HART, I/O count and Ex classification. Follow ATEX/IECEx/CSA/UL permit conditions; perform loop calibration with the connected smart transmitter.