ABB NMTU-21C
I. Overview
The ABB NMTU-21C is a thermal resistance power module specifically designed for industrial automation and process control applications. It is mainly used to measure and monitor the power and temperature of thermal resistors, and convert them into standard voltage or current output signals for reading by other devices. This module features high precision and stability, and is suitable for various types of thermal resistors such as Pt100 and Pt50.
II. Parameters
- Model: NMTU-21C
- Manufacturer: ABB
- Type: Thermal resistance power module
- Operating voltage: -0.6 V DC
- Operating temperature range: -20°C to +50°C
- Storage temperature range: -40°C to +70°C
- Product dimensions: 170mm x 105mm x 32mm
- Product weight: Approximately 120g
- Flash memory: 6 MB
- Interface: Supports multiple communication protocols such as Modbus and Profibus
III. Product Features
- High precision and stability: The measurement accuracy is up to 0.1%, and the long-term stability is better than 0.05% per year.
- Strong versatility: Supports various types of thermal resistors such as Pt100 and Pt50.
- High reliability: Uses high-quality components and advanced manufacturing processes to ensure long-term reliable operation.
- Easy integration: Can be integrated with various PLC (Programmable Logic Controllers) and DCS (Distributed Control Systems) to facilitate data collection and monitoring.
- Modular design: Designed as a modular structure, easy to install in standard control cabinets or racks.
- Communication interface: Supports multiple communication protocols such as Modbus and Profibus, facilitating data exchange with other devices.
- Customization service: Can be customized and expanded according to actual needs to meet specific application requirements.
IV. Structure and Composition
The ABB NMTU-21C adopts a modular design, which is convenient for installation and maintenance. Its structure includes:
- Input/output interface: Supports multiple analog input/output and digital input/output.
- Communication interface: Supports Ethernet, serial communication, etc.
- Control unit: Built-in microcontroller, supporting high-speed processing and multiple communication protocols.
- Power supply: Provides stable power supply to ensure the normal operation of the module.
V. Application Fields
The ABB NMTU-21C is widely used in the following fields:
- Chemical and pharmaceutical industry: Used to monitor and control the temperature of reactors, heaters and other equipment.
- Food processing industry: Used to monitor and control the temperature during food processing.
- Power industry: Used to monitor and manage the temperature of power equipment to ensure their normal operation.
- Environmental monitoring: Used for temperature measurement and control in environmental monitoring systems.
- Scientific laboratories: Used for temperature monitoring and control of laboratory equipment.
- Manufacturing industry: Used to control and monitor various production processes that require temperature control.
- Power plants, substations, and distribution rooms: Used to intuitively display circuit parameters, facilitating operators to monitor and manage the power system.
VI. Installation and Maintenance
- Installation: ABB provides detailed installation and configuration guides to help users quickly and accurately install and configure the module.
- Maintenance: The module is easy to maintain, supports remote diagnosis and maintenance, and has high reliability and availability.

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ABB 丨 GE 丨Allen Bradley 丨 Honeywell 丨 Emerson 丨 Bently Nevada 丨 Westinghouse
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Xiamen Xingruijia Import and Export Co., Ltd. is a high-tech enterprise with years of professional experience in selling spare parts for large-scale imported systems (distributed control systems, programmable logic controllers, redundant fault-tolerant control systems, robot systems).
We mainly engage in the sales of imported automation system spare parts and system integration of brands such as Foxboro, Tricon, Ovation, Motorola, Xycom, ABB, Allen-Bradley, Schneider, GE Fanuc, Yaskawa, Woodward, etc. With the efforts of all employees and the support of customers and colleagues in the industry, the company’s business has expanded rapidly, covering East China, South China, North China, Southwest China and other parts of the country, and quickly becoming a rising star in the automation industry. The company adheres to the tenet of “creating value for customers is our eternal pursuit” and the working attitude of “quality assurance, honest service, and timely delivery” to serve every new and old customer for a long time.
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