Model Interpretation

05701-A: System57 module series; 0325: Four-channel non-isolated AO; 0326: Four-channel isolated AO. Technical Specifications

Power supply: DC24V; 4 independent 4-20mA outputs, with range adjustable from 0 to 100% LEL/PPM; output accuracy ≤ ±0.5% FS; 1500VAC isolation between channels; operating temperature: -20 to +60℃; DIN card-type structure.

Interface and communication configuration

Gold fingers connect to the backplane of System57 rack to obtain internal data; front terminals connect four 4-20mA cables to interface with DCS AI terminals; panel operation and fault indicator lights. Core function

Convert the concentrations of various gases into industrial standard current signals and upload them to the DCS; provide short-circuit protection and line fault diagnosis alarms; save parameters even in the event of power failure. Applicable scenarios

Renovation of remote transmission signals and replacement of spare parts for the old System57 gas detection cabinets in the refining, chemical and oil and gas plants.

Operating and maintenance instructions

The output cables use shielded twisted-pair cables with single-point grounding; annual calibration of output current accuracy; the 0325/0326 hardware pins are compatible, and 0326 should be selected for isolated conditions.