Yokogawa AAI141 – H50/K4A00

Description

Product Overview

The Yokogawa AAI141 – H50/K4A00 is a high – performance analog input module, a key component in industrial process control systems, developed by Yokogawa, a world – leading provider of industrial automation and control solutions. It is designed to accurately collect and process analog signals from various industrial sensors and transmit them to the control system, serving as a crucial link between the field equipment and the upper – level control platform. With advanced technology and precise engineering, this module ensures reliable, accurate, and efficient data acquisition, playing an important role in enhancing the monitoring and control of industrial processes, ensuring stable operation, and improving production efficiency across a wide range of industrial sectors.

Technical Specifications

Yokogawa AAI141 – H50/K4A00

Main Features and Advantages

Multi – signal Compatibility

The Yokogawa AAI141 – H50/K4A00 stands out for its excellent multi – signal compatibility. It can handle a variety of analog input signals, including those from thermocouples, RTDs, and 4 – 20 mA current loops. This versatility allows it to be used in diverse industrial scenarios where different types of sensors are employed. For example, in a chemical plant, it can simultaneously collect temperature signals from thermocouples in reactors, pressure signals converted to 4 – 20 mA from pressure transmitters in pipelines, and temperature signals from RTDs in storage tanks. This eliminates the need for multiple specialized modules, simplifying the system structure and reducing costs.

Ultra – high Measurement Accuracy

Equipped with advanced signal processing technology, the AAI141 – H50/K4A00 offers ultra – high measurement accuracy. Its precise measurement capabilities ensure that even tiny changes in process parameters are accurately captured. In a pharmaceutical production process where strict control of reaction temperature is required, the module can accurately measure the temperature inside the reactor with an error of only a few tenths of a degree, providing reliable data support for precise process control and ensuring the quality and consistency of pharmaceutical products.

Strong Anti – interference Ability

The Yokogawa AAI141 – H50/K4A00 is designed with strong anti – interference capabilities. It adopts advanced isolation technology, with 250 V AC isolation between channels and 500 V AC isolation between channels and the backplane, effectively preventing cross – interference between channels and interference from the backplane. Additionally, it is equipped with filters and shielding measures to resist electromagnetic interference from the surrounding environment. In a factory with a large number of high – power electrical equipment, this anti – interference ability ensures that the module can still collect accurate signals, avoiding measurement errors caused by interference and ensuring the stability of the control system.

Seamless Integration with DCS Systems

This analog input module is designed to seamlessly integrate with Yokogawa’s distributed control systems (DCS), such as the CENTUM VP system. It can communicate smoothly with the DCS controller, enabling real – time transmission of collected data to the central control room. The integration is simple and convenient, requiring only correct wiring and parameter configuration according to the system requirements. In a large – scale petrochemical plant, the AAI141 – H50/K4A00 modules installed in various process units can upload data to the CENTUM VP system in real – time, allowing operators to monitor the entire production process centrally and make timely adjustments, improving the overall control level of the plant.

Yokogawa AAI141 – H50/K4A00

Application Field

In the oil and gas industry, the Yokogawa AAI141 – H50/K4A00 is widely used in upstream oil drilling, midstream oil and gas transportation, and downstream refining. In oil drilling platforms, it collects temperature signals from downhole sensors and pressure signals from pipelines to monitor the drilling process and ensure safe operation. In oil refineries, it is used to measure the temperature, pressure, and flow of various streams in the distillation, catalytic cracking, and other units, providing accurate data for process optimization and quality control.

For the power generation sector, this module is applied in thermal power plants, nuclear power plants, and renewable energy facilities. In thermal power plants, it measures the temperature of boiler water, steam pressure, and the temperature of turbine bearings, helping to ensure the safe and efficient operation of the power generation equipment. In nuclear power plants, it is used in the monitoring of key parameters in the reactor cooling system and other important systems, ensuring the stable operation of the nuclear power plant.

In the chemical and pharmaceutical industries, the AAI141 – H50/K4A00 plays a vital role. In chemical production, it collects parameters such as the temperature, pressure, and concentration of reactants in chemical reactors, enabling precise control of the reaction process and ensuring product quality. In pharmaceutical production, it is used to monitor the temperature, pH value, and other parameters in the drug synthesis and purification processes, meeting the strict regulatory requirements of the pharmaceutical industry.

Related Products

• Yokogawa AAI143 – H50/K4A00: This is an 8 – channel analog input module, which has more channels than the AAI141 – H50/K4A00. It is suitable for applications that require collecting analog signals from more field devices, providing a more cost – effective solution for large – scale process control systems while maintaining the same high accuracy and performance.
• Yokogawa AAO141 – H50/K4A00: An analog output module that complements the AAI141 – H50/K4A00. While the AAI141 – H50/K4A00 is responsible for collecting analog signals, the AAO141 – H50/K4A00 is used to output analog signals to control valves, variable frequency drives, and other actuators, forming a complete closed – loop control system.
• Yokogawa CENTUM VP DCS: As a advanced distributed control system, the CENTUM VP DCS is perfectly compatible with the AAI141 – H50/K4A00. The module can be easily integrated into the CENTUM VP system, and the system can centrally manage and process the data collected by the module, enabling advanced functions such as process visualization, alarm management, and historical data recording.
• Yokogawa Calibration Tools (e.g., CA700): These calibration tools are used to calibrate the AAI141 – H50/K4A00 regularly. The CA700 calibration tool can provide accurate standard signals, ensuring that the module maintains high measurement accuracy during long – term operation, thus guaranteeing the reliability of the process control system.

Installation and Maintenance

Pre – installation preparation: Before installing the Yokogawa AAI141 – H50/K4A00, carefully read the installation manual provided by Yokogawa. Ensure that the power supply (24 V DC) is stable and meets the requirements. Check that the mounting rack and backplane are compatible with the module. Prepare the necessary tools such as screwdrivers and wire strippers, and ensure that the connecting cables are of appropriate specifications. Select an installation location that is away from strong electromagnetic interference sources, high temperature, and high humidity areas, and meets the operating temperature range requirements.

Installation steps: Insert the module into the corresponding slot of the mounting rack and fix it with screws to ensure it is firmly installed. Connect the field sensor signals to the corresponding channels of the module according to the wiring diagram, paying attention to the correct polarity and wiring specifications for different signal types (e.g., thermocouples need to be connected with compensation wires). Connect the 24 V DC power supply to the module’s power interface. After completing the wiring, conduct a comprehensive inspection to ensure that all connections are correct and firm.

Maintenance recommendations: Regularly inspect the Yokogawa AAI141 – H50/K4A00 for signs of physical damage, loose connections, or abnormal heating. Clean the surface of the module with a dry, soft cloth to remove dust and debris, especially in dusty environments. Perform regular calibration according to the recommended schedule (usually once a year) using professional calibration tools like the Yokogawa CA700 to ensure the module’s measurement accuracy. Utilize the diagnostic functions of the DCS system to monitor the module’s operating status in real – time, such as checking for communication errors and signal abnormalities. If any faults are found, refer to the troubleshooting guide in the product manual or contact Yokogawa’s technical support team for assistance. When replacing the module, follow the correct procedures to avoid damage to the backplane or other components.

Product Guarantee

Yokogawa is committed to providing high – quality products, and the Yokogawa AAI141 – H50/K4A00 is no exception. The module undergoes rigorous testing and strict quality control during the manufacturing process to meet international industry standards. Yokogawa offers a 3 – year warranty period. During the warranty period, if the module has defects due to faulty materials or workmanship, Yokogawa will provide free repair or replacement services. In addition to the warranty, Yokogawa provides professional technical support, including installation guidance, debugging assistance, and troubleshooting services. The company’s global service network ensures that users can receive timely support wherever they are, reflecting Yokogawa’s confidence in the quality of the AAI141 – H50/K4A00 and its commitment to customer satisfaction.