Yokogawa AMM32TJ RTD Input Multiplexer Module

The Yokogawa AMM32TJ is an advanced RTD (Resistance Temperature Detector) Input Multiplexer Module, designed to interface high-density temperature measurement with Yokogawa’s CENTUM and ProSafe-RS systems. As part of the Yokogawa I/O subsystem, this module streamlines the acquisition of accurate, stable, and noise-immune temperature data from multiple RTD sensors simultaneously.

This model accommodates up to 32 RTD inputs, specifically designed for three-wire Pt100 sensors. It features automatic scanning, error detection, and flexible configuration, making it suitable for precise industrial temperature monitoring across process plants, power generation facilities, and laboratory environments.

It operates within Yokogawa’s renowned high-integrity I/O architecture, offering secure data transmission and efficient diagnostics that ensure operational reliability and ease of maintenance in mission-critical environments.

Product Specifications

Product Applications

The AMM32TJ is widely utilized across a range of sectors where reliable and accurate temperature sensing is critical:

• Petrochemical and Refining Plants – For thermal monitoring of reactors, pipelines, and distillation units.

• Power Generation Facilities – Monitoring of boiler temperatures, turbine bearings, and transformer windings.

• Pharmaceutical Industry – Used in GMP-compliant facilities for precise temperature control of sterile environments.

• Food & Beverage Processing – Batch heating and fermentation process monitoring.

• Semiconductor Manufacturing – Cleanroom temperature control for wafer fabrication.

• Research Laboratories – High-density multi-point temperature logging in experimental setups.

Product Advantages

• High Channel Density: Supports up to 32 RTD channels in a compact module, saving space and reducing system complexity.

• Precision Measurement: With a typical accuracy of ±0.2°C and fine resolution, it meets the needs of highly sensitive processes.

• Built-in Diagnostics: Continuously monitors for wiring faults or sensor failures, ensuring immediate alerts in critical operations.

• Scalability: Easily expandable within Yokogawa’s modular I/O architecture, allowing flexible system design.

• Seamless Integration: Fully compatible with Yokogawa DCS platforms, enabling smooth configuration and data management.

• Durability: Designed to withstand harsh industrial conditions with superior insulation and environmental tolerance.

• Optimized Wiring: 3-wire RTD support with automatic compensation for lead resistance eliminates manual adjustments.

• Reduced Maintenance: Intelligent sensor management and simplified hardware design reduce long-term operational costs.

• Low Power Consumption: Efficient design minimizes heat generation and power draw within control cabinets.

• Global Provenance: Backed by Yokogawa’s legacy in precision instrumentation and reliability.

Frequently Asked Questions (FAQ)

1. What types of RTD sensors does the AMM32TJ support?

   It supports 3-wire Pt100 sensors with standardized alpha coefficients (typically IEC 751/ITS-90 standard).

2. Can this module detect open or short circuits in the RTD wiring?

   Yes, it has built-in diagnostics to detect open or shorted sensors and wiring faults.

3. Does the AMM32TJ support redundancy?

   When installed within a Yokogawa redundant I/O system, redundancy can be achieved at the system level.

4. How is calibration handled?

   The module is factory-calibrated, with long-term stability, and requires minimal field calibration.

5. Is the AMM32TJ hot-swappable?

   In systems designed with hot-swap capability, the module can be replaced without system downtime.

6. What is the minimum scan time for all 32 channels?

   It completes a full scan in under 1.5 seconds, ensuring responsive process feedback.

7. Is the module suitable for safety systems (SIL-rated)?

   While not SIL-rated on its own, it can be used in ProSafe-RS environments with appropriate design safeguards.

8. Can it be used with thermocouples?

   No, the AMM32TJ is specifically designed for RTD sensors. Use a different module for thermocouple inputs.

9. How is the module configured?

   Through Yokogawa’s system engineering tools like CENTUM VP’s Engineering Station (HIS).

10. Does it require any external power supply?

    No, it draws power from the system I/O base, simplifying installation.