The circuit board adopts multi-layer high-temperature resistant FR-4 industrial PCB with fully enclosed electromagnetic shielding layout. Every signal channel is equipped with 1000V AC/DC galvanic isolation between field wiring terminals and internal logic circuits, which effectively suppresses severe electromagnetic interference generated by inverters, high-voltage switchgears and large rotating machinery in thermal power, petrochemical and metallurgical heavy industrial sites. All finished boards pass rigorous full-process factory inspection including 72-hour high-low temperature cyclic aging test, full-channel temperature precision calibration, long-duration full-load bus communication burn-in and channel open/short fault simulation. It supports single-slot hot-swappable installation without shutting down the entire DCS system, and integrates multi-level hardware protection circuits: surge suppression, overvoltage protection, overcurrent protection, reverse polarity prevention and short-circuit protection. Independent LED diagnostic indicators display power supply status, bus link condition and single-channel sensor fault alarms for rapid on-site troubleshooting, greatly improving the accuracy and stability of long-term temperature monitoring in industrial process control.

Medium and super-large thermal power plant Ovation WDPF distributed control systems, multi-unit integrated petrochemical process temperature acquisition cabinets, full-process furnace and pipeline temperature monitoring stations for metallurgical factories, multi-station automatic control systems of large municipal wastewater treatment plants, whole-plant equipment temperature signal acquisition racks for pulp & paper factories, multi-rack redundant central control rooms of traditional heavy industry, temperature parameter remote monitoring automation platforms for energy & chemical continuous production lines, centralized DCS monitoring control systems for large-scale distributed energy storage power stations