Technical Specifications Rated working voltage DC 24V. Operating temperature range ‑40℃ ~ +85℃. Relative humidity 5%‑95%, non‑condensing. Protection class IP20. Standard DIN‑rail mounting method. Equipped with screw wiring terminals. Compatible with 4‑20mA analog loop circuit of Foxboro I/A series hardware.
Functional Features Realizes impedance matching for analog input and output loops. Mitigates signal distortion risk brought by long‑distance field cable transmission. Restrains interference noise on analog loop circuits. Compact modular design saves cabinet installation space. Easy‑to‑maintain structure supports on‑site quick replacement.
Application Scenarios Petrochemical refining control cabinet, chemical process production control system, thermal power plant instrument signal system, metallurgical automatic production equipment, oil‑gas field gathering and transmission monitoring cabinet, pharmaceutical industry process control.
Structural Characteristics Small‑size industrial‑grade modular housing. Integrated DIN‑rail quick‑lock buckle structure. External screw‑type wiring terminals for signal loop connection. Internal precision resistance components with heat‑dissipation auxiliary structure.
Working Principle The module accesses analog instrument signal loop circuit, provides appropriate load impedance for the whole loop. It improves impedance consistency of signal transmission path, weakens signal reflection and noise interference, so that field analog measurement signal can be accurately transmitted to DCS control hardware.
Installation Requirements Install on standard DIN‑rail inside control cabinet. All wiring terminals must be fully fastened. Keep good heat‑dissipation and ventilation environment inside cabinet. Installation location shall be far away from high‑voltage equipment and interference cables.
Usage Notes Verify loop working parameters before commissioning and putting into service. Avoid circuit overload operation. Carry out periodic inspection on wiring tightness. Prevent module from suffering heavy mechanical collision.v
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