Product Overview

The Emerson KJ3002X1-BG2 (referenced by part numbers 12P1731X032 and VE4003S5B1) is a specialized 8-channel analog input card designed for the DeltaV™ M-series I/O subsystem. This high-resolution module is engineered specifically for temperature monitoring applications, interfacing directly with thermocouples and millivolt (mV) field devices. By providing precision signal conditioning and digitized data acquisition, the module allows the DeltaV Distributed Control System (DCS) to perform accurate thermal analysis and closed-loop temperature control. It is an essential component for high-stakes thermal processes in power generation, refining, and chemical synthesis where millidegree accuracy is paramount.

Technical Characteristics

The KJ3002X1-BG2 is distinguished by its signal purity and integration within the DeltaV safety and control ecosystem:

Precision Thermocouple Interfacing This module supports a wide range of standard thermocouple types (such as J, K, T, E, R, S, B, and N) and low-level millivolt signals. It includes integrated Cold Junction Compensation (CJC) to ensure temperature readings remain accurate regardless of ambient temperature fluctuations at the I/O terminal block.

Fault-Tolerant RedundancyTo support 24/7 continuous operations, the KJ3002X1-BG2 supports 1:1 redundancy configurations. When installed in a redundant carrier, the system ensures seamless bumpless switchover to a standby card in the event of a hardware failure, preventing process interruptions and maintaining visibility of critical thermal parameters.

Advanced Noise Immunity and Isolation Designed for harsh industrial environments, the card features robust galvanic isolation and high common-mode rejection. This protects the DCS backplane from field-side electrical surges and minimizes the impact of electromagnetic interference (EMI) often caused by high-voltage motors and heaters.

Live System Maintenance The module supports "Removal and Insertion Under Power" (RIUP), allowing technicians to replace or upgrade the card without powering down the I/O carrier or affecting adjacent modules. This modularity reduces mean time to repair (MTTR) and simplifies long-term system maintenance.

Technical Specifications

• Brand: Emerson (DeltaV Series)

• Model Number: KJ3002X1-BG2

• Part Numbers: 12P1731X032 / VE4003S5B1

• Input Type: 8-Channel Thermocouple or Millivolt (mV)

• Subsystem: DeltaV™ M-series I/O

• Isolation: Galvanic isolation between field and system

• Compensation: Automatic Cold Junction Compensation (CJC)

• Weight: 0.2 kg

• Dimensions: 8.1 cm x 7.9 cm x 8.8 cm

• Origin: USA

Application Areas

The KJ3002X1-BG2 is a standard choice for thermal monitoring in:

• Power Utilities: Boiler tube temperature monitoring and turbine exhaust gas analysis.

• Petrochemical: Reactor bed temperature profiling and furnace control.

• Specialty Chemicals: Precise heat-trace monitoring and batch temperature regulation.

• Metals & Mining: Smelter and kiln thermal management.