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Product Overview

The AMM12T (Model: AMM12T) is a specialized high-precision analog input card designed for the Yokogawa CENTUM VP and CS 3000 Distributed Control Systems (DCS). As a primary component of the Field I/O (FIO) subsystem, the AMM12T (Order Number: AMM12T) provides a high-integrity interface for 16 channels of temperature measurement. The "T" designation signifies its optimization for thermal acquisition, distinguishing it from general-purpose analog modules through integrated linearization and internal cold-junction compensation (CJC) for a wide spectrum of industrial sensors.

To maintain signal purity, each of the 16 channels on the AMM12T (Part Number: AMM12T) is galvanically isolated. This architectural design shields sensitive millivolt-level thermal signals from field-side electrical noise, ground loops, and transients. This module is essential for expertise-driven process control in petrochemical refineries and power plants, providing the trustworthiness required for monitoring reactors, turbines, and distillation columns.

Detailed Technical Specifications

The AMM12T is engineered for deterministic performance in extreme industrial environments.

  • Manufacturer: Yokogawa Electric Corporation

  • Model Number: AMM12T

  • Product Type: 16-Channel Isolated Temperature Input Module

  • Supported RTD Types: Pt100, JPt100, Pt50, Cu10 (Supports 3-wire connection)

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

  • Measurement Range:

    • Thermocouple: –200°C to +850°C (depending on type)

    • RTD: –200°C to +400°C

  • Measurement Accuracy: ±0.1°C (RTD), ±0.5°C (TC)

  • A/D Resolution: 12 to 16-bit (System configuration dependent)

  • Isolation Architecture: Channel-to-system galvanic isolation

  • Withstanding Voltage: 500 V AC between field terminals and system logic

  • Insulation Resistance: 100 MΩ or more (at 500 V DC)

  • Data Update Period: Fast sampling synchronized with DCS scan cycles

  • Diagnostics: Sensor burnout (open circuit) and short-circuit detection

  • Operating Temperature: 0°C to +60°C

  • Dimensions (W x H x D): 32.8 x 107.5 x 130 mm (Standard FIO footprint)

  • Weight: 0.35 kg (Net) / 0.5 kg (Shipping)

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