Technical Specifications:​ 8 analog inputs 4–20 mA Ex i; PROFIBUS-DP interface; supply 24 V DC 20–30 V; resolution 12-bit in the standard Ex i 8-input version and 16-bit in selected Ex ia/ib variants; module protection IP66, terminals IP20, terminals with cover IP30; operating temperature -25°C to +60°C T4; storage -40°C to +60°C; weight about 2.1 kg.

Functional Features:​ Intrinsically safe input for two-wire transmitters or active 4–20 mA signals; coding rotary switch for PROFIBUS address; galvanic isolation; open-circuit/short-circuit diagnostics; LED status for ON, BF and SF.

Application Scenarios:​ Oil and gas production and refining, chemical and pharmaceutical process areas, power plant instrument interfaces, offshore platforms, Zone 1/21 dusty or gaseous hazardous locations.

Performance Parameters:​ 8-channel 4–20 mA acquisition; high-interference-resistance transmission over PROFIBUS-DP; diagnostic telegrams for wiring faults in addition to process values.

Material And Structure:​ Flameproof clip-on thermoplastic enclosure for TH35 rail; front address switch; field and bus connectors; LED indicators.

Working Principle:​ Supplies and reads intrinsically safe 4–20 mA transmitters, converts each channel to digital process data, isolates field/bus/power domains, and transfers values and diagnostics to the PROFIBUS-DP master.

Installation Requirements:​ Mount on TH35 rail in the specified Ex enclosure; provide 20–30 V DC; set the PROFIBUS address with the rotary switch; use certified Ex i wiring and proper cable glands.

Usage Notes:​ Confirm whether the delivered unit is the 12-bit 8-input Ex i version or a 16-bit variant before calibration. Follow ATEX/IECEx/CSA/UL scope printed on the nameplate; do not open the enclosure in hazardous areas unless permitted.