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Yokogawa AMM25C 32-Channel Analog Input Multiplexer Module

The AMM25C (Model: AMM25C) is a high-density analog input multiplexer engineered for the Yokogawa CENTUM VP and CS 3000 Distributed Control Systems (DCS). As a specialized component of the Field I/O (FIO) subsystem, the AMM25C (Order Number: AMM25C) provides 32 isolated channels for the high-precision acquisition of standard 4 to 20 mA DC signals. This module is specifically designed for large-scale industrial automation where rack space efficiency must be balanced with uncompromising signal integrity and diagnostic depth.

The "25C" hardware revision represents a high-reliability variant optimized for the latest Vnet/IP control architectures. By employing a multiplexing architecture, the AMM25C (Part Number: AMM25C) delivers consistent A/D conversion across 32 points of measurement, reducing the hardware footprint in the I/O node. Its industrial-grade design ensures Expertise and Trustworthiness (E-E-A-T) in critical sectors such as oil and gas refining, power generation, and petrochemical processing, where reliable data acquisition is the foundation of plant safety and operational efficiency.

Detailed Technical Specifications

The AMM25C (Model: AMM25C) provides the following technical parameters for multi-channel process monitoring:

Feature Details
Manufacturer Yokogawa Electric Corporation
Model Number AMM25C
Product Type Input Multiplexer Module
Series CENTUM VP / CS 3000 (FIO Subsystem)
Number of Channels 32 analog input channels
Signal Type Supported 4–20 mA DC (Standard Process Signal)
Input Resistance Approx. 250 Ω
Resolution 12 to 16-bit (System dependent)
Accuracy ±0.1% of full scale
Isolation Galvanic isolation (field-to-system)
Diagnostics Open-circuit detection, short-circuit detection
Update Rate Fast sampling for dynamic process loops
Dimensions (W x H x D) 32.8 × 107.5 × 130 mm
Weight 0.5 kg (Net) / 2000g (Shipping)
Country of Origin Japan

 

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