Product Overview

The Emerson KJ3002X1-BG2 thermocouple input card, also referenced by order number 12P1731X022 and hardware code VE4003S5B1, is an 8-channel temperature input module developed for the DeltaV™ M-series I/O subsystem. This module is designed to acquire low-level millivolt signals from thermocouples and convert them into accurate temperature values for use within DeltaV distributed control systems.

Engineered for stable performance in industrial control cabinets, the module incorporates signal conditioning and temperature reference compensation to ensure reliable measurements. Although production of this model ended in 2018, it remains widely used as a replacement or spare part for installed DeltaV M-series systems that require continued operational support.

Key Technical Characteristics

• Module Type: Thermocouple Input Module

• Channel Count: 8 thermocouple inputs

• Supported Sensor Types: J, K, T, E, R, S, B, N

• Signal Processing: High-resolution analog-to-digital conversion

• Cold Junction Compensation: Integrated automatic compensation

• Electrical Protection: Channel-to-system galvanic isolation

• Diagnostics: Open-circuit detection and input range monitoring

• Maintenance: Hot-swappable during system operation

• Hardware Platform: DeltaV M-series I/O

• Model Number: KJ3002X1-BG2

• Order Number: 12P1731X022

• Series Code: VE4003S5B1

• Dimensions: 8.1 × 7.9 × 8.8 cm

• Weight: Approx. 0.2 kg

• Country of Origin: USA

Industrial Applications

This thermocouple input module is commonly used in process industries where accurate and stable temperature measurement is essential. Typical applications include boiler and turbine monitoring in power plants, temperature control of reactors and columns in chemical facilities, furnace supervision in metals processing, and heat management in oil and gas refining operations.

The module is particularly suitable for maintaining legacy DeltaV M-series systems, ensuring continuity of temperature monitoring and control without requiring system redesign or migration.