PLCs, Power Supplies & Others

The Yokogawa AMM22TJ significantly expands your system’s temperature monitoring capacity. This module handles multiple thermocouple inputs with exceptional precision. It directly connects field sensors to the central control network. This design reduces the need for additional wiring terminals. You will achieve a more organized and reliable instrumentation layout.

Technical Specifications and Physical Attributes

This multiplexer features a compact and robust construction. The module measures approximately 100 mm in height and 60 mm in width. Its depth reaches 120 mm, fitting standard rack configurations. The unit weighs roughly 0.5 kilograms for easy installation. It operates efficiently within a temperature range of -20°C to +70°C. This ensures stable performance across demanding plant environments.

Interface, Connectivity, and Storage

The Yokogawa AMM22TJ offers dedicated channels for direct thermocouple connection. It supports standard types like K, J, T, and E. The module provides high immunity against electrical noise and interference. It features a built‑in cold junction compensation circuit for accuracy. The onboard energy storage ensures data retention during brief power dips. Moreover, the firmware stores calibration parameters on the device itself. This allows for quick module replacement without recalibration.

Component Layout and Operational Efficiency

This device contains fewer than 50 discrete electronic components. This minimal part count enhances the module’s long‑term reliability. The front panel includes clearly labeled status LEDs for diagnostics. Consequently, operators can verify channel health at a single glance. The Yokogawa AMM22TJ utilizes a standard 36‑pin connector for signal transmission. This interface ensures seamless integration with existing Yokogawa controllers.

Dimensional Overview

Enhanced Signal Management

The module actively scans all input channels at high speed. It then transmits the digital data to the main processor. This scanning mechanism minimizes signal latency significantly. The Yokogawa AMM22TJ also performs automatic linearization for each thermocouple type. Furthermore, it provides open circuit detection to prevent measurement errors. This feature proves essential for critical temperature control loops.

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