Yokogawa AMM25C: High-Performance mV Input Multiplexer Module with Thermocouple Interface

Overview

The Yokogawa AMM25C is a versatile mV input multiplexer module, specifically designed for precise temperature measurement using thermocouples. It integrates seamlessly with Yokogawa CENTUM CS and CENTUM VP control systems, offering reliable signal acquisition even in harsh industrial environments. Thanks to its compact design, it fits perfectly into standard I/O module nests, optimizing both space and installation time.

Key Specifications

Features

• Versatile Input Types: The AMM25C supports a range of input types, including DC voltage, mV DC, and thermocouple signals. This flexibility makes it suitable for diverse temperature measurement tasks.
• Accurate Temperature Measurements: With a broad input range of -10 to 10 V DC and -100 to 100 mV DC, it offers high-precision temperature measurements. It ensures accurate readings even in fluctuating ambient conditions.
• Enhanced Accuracy: The module maintains ±40 μV accuracy for mV inputs and compensates for up to ±80 μV changes in ambient temperature. These specifications ensure that the system delivers stable, accurate data at all times.
• Signal Isolation for Clean Data: By fully isolating all inputs, the AMM25C prevents interference and noise from affecting the measurement signals, ensuring high-quality, reliable data.
• Burnout Detection: The module includes selectable burnout detection features, allowing users to configure responses based on UP, DOWN, or OFF settings. This functionality minimizes the risk of system failure due to sensor malfunctions.
• Reference Junction Compensation: With the built-in RJC (Reference Junction Compensation), the module ensures precise thermocouple readings by accounting for temperature variations at the connection points.
• Seamless Integration: The AMM25C integrates effortlessly with Yokogawa CENTUM CS and CENTUM VP systems, providing a seamless experience in process control and automation.

Technical Parameters

• Input Channels: The module supports up to 15 channels, offering extensive temperature monitoring capabilities.
• Temperature Range: Measures temperatures ranging from -10 to 10 V DC and -100 to 100 mV DC, providing accurate data across various industrial applications.
• Accuracy: It offers ±40 μV for mV inputs, ensuring stable and precise measurements, even in challenging conditions.
• Signal Isolation: Fully isolated inputs protect the system from external noise and interference.
• Burnout Detection: Selectable burnout detection ensures protection from faulty thermocouples, minimizing system downtime.
• Dimensions: The module is compact, with dimensions of 2.5 cm (H) x 22.9 cm (W) x 7.6 cm (D), making installation straightforward.
• Weight: It weighs just 2 kg, making it easy to handle and integrate into existing setups.

Applications

• Industrial Temperature Monitoring: The AMM25C is ideal for real-time temperature monitoring in industrial processes, ensuring precise temperature data collection.
• Thermocouple Integration: Perfect for applications requiring thermocouple signals, the module provides accurate temperature measurement for systems like furnaces and reactors.
• Seamless Process Control: With its compatibility with Yokogawa CENTUM CS and CENTUM VP, it enhances the performance of process control systems, providing reliable temperature data to support decision-making.
• Harsh Industrial Environments: Built for industrial reliability, the AMM25C operates efficiently in harsh conditions, ensuring long-term, stable performance.