Honeywell 8C-PAOH51 Analog Input Module

High-Precision Analog Measurement for Experion PKS

The Honeywell 8C-PAOH51 functions as a high-precision analog input module within the Experion PKS distributed control system. This module provides 8 analog input channels, each accepting 4-20 mA current signals from field transmitters. Its compact housing measures 130 mm in height, 45 mm in width, and 120 mm in depth, fitting standard Series C termination assemblies. The total weight reaches approximately 0.4 kg, offering durability without compromising installation ease.

Each channel includes a built-in current loop supply for powering 2-wire transmitters directly. The following table details the complete technical specifications for this analog input solution:

Signal Conditioning and Loop Powering

The 8C-PAOH51 provides a 24 V DC loop supply for each connected 2-wire field transmitter. This eliminates the need for external power supplies and simplifies wiring. The module presents a 250 Ω burden impedance to the current loop. Engineers can therefore connect pressure, temperature, and level transmitters directly without additional components.

Measurement Accuracy and Resolution

Each channel delivers 16-bit resolution for precise process variable representation. The module maintains ±0.05% full-scale accuracy across the operating temperature range. This high accuracy ensures reliable measurement for critical control applications. Users benefit from consistent performance even under varying environmental conditions.

System Integration and Diagnostic Features

The module interfaces with the Experion PKS controller through the Series C backplane. Comprehensive diagnostic features monitor channel health and signal quality. The system also detects open-loop and short-circuit conditions for proactive maintenance. Process engineers can therefore identify and address issues before they affect operations.