YOKOGAWA AMM42T S2 AMT16M S1 2-WIRE TRANSMITTER INPUT MULTIPLEXER MODULE

Description:

The Yokogawa AMM42T S2 / AMT16M S1 2-Wire Transmitter Input Multiplexer Module is used in distributed control systems for acquiring multiple 4–20 mA signals from field transmitters. Commonly installed in Yokogawa CENTUM DCS cabinets with terminal blocks for high-density signal aggregation. Maintenance teams and system integrators use this part for consolidating transmitter inputs, replacing legacy multiplexer modules, or maintaining efficient signal acquisition in process control systems.

Applications:

The Yokogawa AMM42T S2 multiplexer module is commonly used in industrial environments where multiple 2-wire transmitters must be connected efficiently to a control system. It is frequently applied in oil & gas, chemical plants, and power generation systems to collect analog signals such as pressure, flow, and temperature from field instruments. The module reduces wiring complexity by multiplexing multiple input signals into fewer channels while maintaining stable signal transmission for monitoring and control.

Technical Specifications:

• Manufacturer: Yokogawa
• Model / Part Number: AMM42T S2 / AMT16M S1
• Product Type: 2-Wire Transmitter Input Multiplexer Module
• Input Channels: Up to 16 transmitter inputs
• Input Signal: 4–20 mA DC (2-wire transmitters)
• Function: Multiplexes multiple analog signals into DCS input modules
• Compatible Terminal Block: AMT16M (16-point terminal assembly)
• Input Voltage Range: Supports typical transmitter loop voltages (~24 VDC systems)
• Accuracy: Approx. ±10 µA
• Data Update Period: ~1 second
• Signal Isolation: No isolation between channels or system (shared common)
• Installation: Mounted in I/O module nest within DCS racks
• System Compatibility: Yokogawa CENTUM CS / CS3000 systems
• Functionality: Reduces wiring complexity and centralizes transmitter inputs

Common Replacements:

• Yokogawa AAI143 Analog Input Module
• Yokogawa AAM10 Analog Input Module
• Yokogawa AAT145 TC/mV Input Module