Technical Specifications Nominal working voltage DC 24V. Operating temperature ‑40℃ ~ +85℃. Humidity range 5%‑95%, non‑condensing. IP20 protection grade. DIN‑rail mounting structure. Adopts screw‑type wiring terminals for signal loop connection.
Functional Features Provides precise impedance matching for analog signal loop. Suppresses signal oscillation and reflection interference generated by long‑distance cable transmission. Adopts compact modular design, convenient for cabinet layout. Simple installation procedure, lower on‑site maintenance difficulty.
Application Scenarios Chemical plant DCS control cabinet, petrochemical process control system, oil‑gas gathering and transmission automation equipment, water‑treatment process control system, industrial process analog signal conditioning cabinet.
Performance Parameters Resistance characteristic remains stable under wide temperature fluctuation. Adapt to long‑time continuous industrial site operation. Mechanical structure meets industrial anti‑vibration standard.
Structural Characteristics Industrial‑grade modular shell structure. DIN‑rail clamping buckle for fast installation and removal. External multi‑group screw wiring terminals. Internal high‑precision resistance components with anti‑aging treatment.
Working Principle Foxboro RH924JH is connected into analog signal loop, provides matched load impedance for transmission circuit. It eliminates impedance mismatch between field cable and control system channel, restrains reflected wave of analog signal, reduces oscillation noise, and realizes stable transmission of field process signal.
Installation Requirements Fix the unit on standard DIN‑rail inside control cabinet. Tighten each wiring terminal screw. Keep away from strong electromagnetic interference sources and high‑voltage cable bundles. Guarantee cabinet internal air circulation and heat dissipation.
Usage Notes Check loop circuit working parameters before putting into use. Strictly avoid over‑temperature working environment. Check wiring connection status regularly in daily maintenance. Prevent hard impact on module housing.
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