Description

The Emerson DeltaV KJ3002X1-BG2 (12P1731X082) is a high-precision 8-channel analog input module designed for the DeltaV Scalable Process System. This module is specifically engineered to interface with thermocouple and millivolt (mV) sensors, providing reliable data acquisition for critical process monitoring in demanding industrial environments, including power generation, petrochemical refining, and metallurgy. It supports high-resolution temperature sensing to help maintain process stability and minimize downtime.

Hardware Interface and Safety Architecture

The KJ3002X1-BG2 features energy-limiting circuitry designed for use in Zone 2 hazardous atmospheres. It incorporates a mechanical rotary keying system, requiring the associated terminal block to be set to position B2 to ensure correct hardware compatibility. The module supports Removal and Insertion Under Power (RIUP) when used with compatible DeltaV power supplies, provided that primary circuit inductance is managed appropriately. Field power should be disconnected at the terminal level prior to physical extraction to maintain circuit integrity.

Features

• 8-channel isolated input for thermocouple and millivolt signals.
• Designed for ISA-S71.04-1985 Class G3 harsh environment compliance.
• Supports RIUP (Removal and Insertion Under Power) for modular maintenance.
• Integrated mechanical keying (Position B2) to prevent incorrect module insertion.
• Factory calibrated for high precision; no field calibration required.

Applications

• Temperature monitoring in petrochemical and chemical processing.
• High-accuracy millivolt signal acquisition for industrial automation.
• Critical process control in power generation facilities.
• Harsh environment sensing where G3-rated equipment is mandatory.

Technical Specifications

Installation Guidelines

• Ensure the terminal block is keyed to position B2 before module installation.
• Verify that the system power supply supports RIUP functionality for the specific rack configuration.
• Always disconnect field power at the terminal level before removing the module to ensure safety in hazardous areas.
• Handle with care to prevent ESD damage; use a grounded wrist strap during installation.
• Ensure adequate ventilation in the cabinet to maintain ambient temperatures within the 0 to 60 deg C range.

Compliance and Certifications

The module is certified for use in Zone 2 hazardous areas (II 3 G, EEx nL IIC T4) per Nemko 02ATEX431U.

FAQ

Is field calibration required for this module?
No, the KJ3002X1-BG2 is factory calibrated and does not require field calibration.

Can this module be removed while the system is powered?
Yes, it supports RIUP (Removal and Insertion Under Power), provided that field power is disconnected at the terminal block and system inductance requirements are met.