Emerson KJ3222X1-BA2 4–20 mA HART Analog Input Card

The KJ3222X1-BA2 delivers precise analog signal acquisition for Emerson control systems through eight HART-capable input channels. This card converts field measurements into reliable digital data for process monitoring and control loops. Engineers choose this module for its accurate current sensing and straightforward chassis installation.

Input Channels and Signal Ratings

The KJ3222X1-BA2 provides eight analog input channels that accept 4–20 mA field signals. Each channel supports HART digital communication over the same two-wire loop. Furthermore, the card achieves input accuracy of ±0.1% across its full measurement range. The module operates across a temperature range of 0°C to 60°C.

Physical Dimensions and Component Count

This analog input card measures approximately 130 mm in length, 80 mm in width, and 25 mm in depth. The unit weighs about 0.20 kg, so technicians seat it quickly into the controller chassis. The assembly includes eight input channels, one backplane connector, and two mounting rails. In addition, front-panel indicators show channel status and fault conditions clearly.

Energy Storage Characteristics

The KJ3222X1-BA2 contains no internal energy storage components because it draws power directly from the chassis backplane. Therefore, the card requires no battery replacement and generates minimal heat. This architecture also keeps long-term maintenance costs low.

Technical Specifications

Integration Notes

System integrators pair the KJ3222X1-BA2 with controllers that manage HART-enabled transmitters across process units. The eight-channel layout reduces card count per cabinet and simplifies loop documentation. Consequently, engineers commission measurement points faster during plant upgrades.