Product Overview

The Emerson KJ3222X1-BA3 is a Series 2 Analog Input Module engineered for the DeltaV™ Distributed Control System (DCS) and DeltaV SIS™ environments. This high-performance I/O component is designed to interface with field-mounted transmitters, supporting 8 channels of 4-20mA signals with integrated HART (Highway Addressable Remote Transducer) digital communication. By facilitating the flow of both primary process variables and secondary diagnostic data, the KJ3222X1-BA3 enables sophisticated asset management and precise process control.

This module is specifically built for "Field Mount" flexibility, allowing it to be installed in remote enclosures closer to process equipment. It effectively bridges the gap between field instrumentation and the control room, providing regulated 24VDC field power to loop-powered devices while maintaining strict signal isolation and accuracy.

Key Technical Characteristics

Built for the most demanding industrial sectors, the KJ3222X1-BA3 offers a combination of electrical precision and extreme environmental durability.

• Extreme Temperature Resilience: Fully operational in ambient temperatures ranging from -40°C to +70°C, making it suitable for unheated outdoor enclosures or high-heat processing areas.

• Integrated HART Capabilities: Supports pass-through communication for HART-smart instruments, allowing for remote calibration, configuration, and device health monitoring.

• Advanced Mechanical Protection: Rated to withstand 10g shock pulses and persistent 0.7g vibration, ensuring signal stability even when mounted on or near heavy rotating machinery.

• G3 Corrosive Environment Compliance: Meets ISA-S71.04 G3 standards for airborne contaminants, protecting internal circuitry from corrosive gases found in refineries and chemical plants.

• Intelligent Keying System: Features a specialized protection keying mechanism that ensures the module only mates with the correct terminal block, preventing accidental hardware damage due to wiring mismatches.

• Hot-Swappable Maintenance: Supports modular hot-swapping, allowing for field replacement without shutting down the controller or disrupting other I/O signals on the same carrier.

Technical Specifications

• Manufacturer: Emerson (Fisher-Rosemount)

• Model Number: KJ3222X1-BA3

• Module Type: Analog Input (AI) 8-Channel 4-20mA HART

• Input Range: 4 to 20 mA (DC)

• Local Bus Power: 12 VDC @ 150 mA

• Field Power: 24 VDC @ 300 mA (Max)

• Per Channel Power: 30 mA (Typical for field circuits)

• Relative Humidity: 5% to 95% (Non-condensing)

• Protection Class: IP20 / ISA G3

• Dimensions: 4.3 cm x 12.5 cm x 18.5 cm

• Net Weight: 0.4 kg

• Origin: USA

Industrial Applications

The KJ3222X1-BA3 is a vital component for high-stakes process monitoring in several key industries:

• Upstream & Midstream Oil and Gas: Monitoring pressure and flow transmitters on remote wellheads and pipelines.

• Chemical Processing: Tracking temperature and level variables in highly corrosive atmospheres.

• Power Generation: High-fidelity signal acquisition for turbine and boiler auxiliary systems.

• Mining & Metals: Ruggedized sensing in environments with high vibration and airborne particulates.