Product Details:

FOXBORO 33C-AJ-D is an 8-channel isolated input interface module belonging to the FOXBORO I/A Series DCS platform, a high-performance industrial instrumentation built for process automation. This isolated input module is a rack-mount plug-in card, equipped with reinforced shielding frame to protect the internal precision electronic circuits from vibration, dust and electromagnetic interference inside control cabinets. Each channel features independent galvanic isolation, which effectively eliminates crosstalk between different signal channels and ensures stable and accurate data acquisition from field instruments. The model 33C-AJ-D is also marked as 33CAJD, sharing the same hardware specifications and functions.

This FOXBORO 33C-AJ-D signal interface card receives analog measurement signals from field transmitters used to monitor temperature, pressure, flow and liquid level. It converts raw analog field signals into digital data and transmits processed data to the DCS host controller for real-time monitoring, historical recording and closed-loop control calculation. The module integrates built-in channel fault diagnosis function, which can detect open circuit, short circuit and abnormal signal status. Once a fault is detected, it sends alarm signals to the DCS system, helping maintenance engineers quickly locate faulty channels and reduce unplanned plant downtime. It supports hot-swap operation, technicians can replace the module without shutting down the entire DCS system, which is essential for continuous production facilities.

Specifications:

Model: 33C-AJ-D

Brand: FOXBORO

Product Type: 8-channel isolated analog input interface module

System compatibility: FOXBORO I/A Series DCS

Power supply: 24 VDC

Input signal: Standard analog field signal

Measurement accuracy: ±0.1% full scale

Channel feature: Galvanic isolation per channel

Diagnosis: Open circuit, short circuit and channel fault alarm

Ambient working temperature: 0℃ ~ +60℃

Relative humidity: 5% ~ 95%, non-condensing

Installation: Rack mounting in DCS cabinet

Housing: Reinforced metal shielding frame

This isolated input module adopts mature circuit design with excellent EMC anti-interference performance, capable of long-term continuous operation in heavy industrial control rooms. Its modular rack plug-in structure simplifies installation and routine maintenance. This signal interface card is widely applied in oil & gas, chemical refining, power generation, pulp and paper industries. It can be deployed for new DCS automation project construction, and also serves as spare parts for replacing aging data acquisition modules on legacy I/A Series DCS systems. Every FOXBORO 33C-AJ-D module passes strict factory inspection and calibration before shipment to guarantee reliable data acquisition performance for process automation.