This module is specially designed for acquiring industrial RTD signals including PT100 and PT1000. It completes front-end signal filtering, constant current excitation, galvanic isolation and optimized high-precision temperature conversion algorithms, delivering low-drift and stable digital temperature data to the DCS main controller. Compared with the G01 model, the G02 version upgrades core sampling circuits, effectively reduces long-term measurement drift of weak resistance signals, and adopts an enhanced lead resistance compensation algorithm to eliminate measurement errors caused by long-distance field cables. It supports 2-wire, 3-wire and 4-wire RTD wiring modes, and each signal channel is equipped with an independent isolation circuit to completely avoid cross-channel signal crosstalk.

The circuit board adopts multi-layer high-temperature resistant FR-4 industrial PCB with full-surround electromagnetic shielding layout. Every signal channel is equipped with 1000V AC/DC galvanic isolation between field wiring terminals and internal logic circuits, which strongly suppresses intense electromagnetic interference generated by inverters, high-voltage switchgears and large rotating equipment in thermal power, petrochemical and metallurgical heavy industrial scenarios. Each finished board passes comprehensive factory reliability tests, including 72-hour high-low temperature cyclic aging, full-channel temperature precision calibration, long-term full-load bus communication burn-in and sensor open/short-circuit fault simulation. It supports single-slot hot-swappable installation without shutting down the whole DCS system, and integrates multi-level hardware protection functions: surge suppression, overvoltage protection, overcurrent protection, reverse polarity prevention and short-circuit protection. Independent LED diagnostic indicators clearly display power supply status, bus link state and single-channel sensor fault alarms to realize rapid on-site troubleshooting, greatly improving the long-term measurement accuracy and operation stability of industrial process temperature monitoring.

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