| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Yokogawa AAM21-S2 RTD Input Module
- Product Details
- FAQs
- Related
- Contact Us
- Packing & Delivery
- Product Ratings

Product Introduction
The Yokogawa AAM21-S2 RTD Input Module is a high-precision analog input module designed for accurate temperature measurements using Resistance Temperature Detectors (RTDs). It is engineered to integrate seamlessly with Yokogawa’s CENTUM CS 1000/3000 control systems, providing reliable and stable temperature data acquisition essential for various industrial processes.
This module supports multiple RTD types, ensuring flexibility and compatibility with a wide range of temperature sensors. Its robust design and advanced features make it suitable for critical applications in industries such as oil and gas, chemical processing, power generation, and more.
Product Specifications
| Parameter | Details |
|---|---|
| Model | AAM21-S2 |
| Manufacturer | Yokogawa Electric Corporation |
| Input Type | RTD (Resistance Temperature Detector) |
| Supported RTD Types | Pt100, JPt100, Cu50, Ni100 |
| Number of Channels | 4 |
| Accuracy | ±0.1% of span |
| Isolation | Channel-to-channel and channel-to-ground isolation |
| Power Supply | 24 V DC |
| Operating Temperature | -20°C to +70°C |
| Humidity Range | 5% to 95% RH (non-condensing) |
| Mounting | DIN rail mounting |
| Dimensions (W x H x D) | 42.9 × 130 × 146.8 mm |
| Weight | 0.1 kg |
| Communication Protocol | Yokogawa’s proprietary communication protocol |
| Compliance Standards | CE, ATEX, CSA, FM, IECEx |
| Warranty | 12 months |
Product Applications
The AAM21-S2 RTD Input Module is suitable for various industrial applications requiring precise temperature monitoring:
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Oil & Gas: Monitoring temperature in pipelines and processing units.
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Chemical Processing: Ensuring accurate temperature control in reactors and storage tanks.
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Power Generation: Measuring temperatures in turbines, boilers, and generators.
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Pharmaceutical Industry: Maintaining strict temperature conditions during drug manufacturing.
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Food & Beverage: Controlling temperatures in cooking, pasteurization, and storage processes.
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HVAC Systems: Monitoring and controlling environmental temperatures in large facilities.
Product Advantages
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High Accuracy: Provides precise temperature measurements critical for process control.
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Multiple RTD Support: Compatible with various RTD types, offering flexibility in sensor selection.
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Robust Isolation: Ensures signal integrity by preventing interference between channels.
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Compact Design: Space-saving dimensions facilitate easy integration into control panels.
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Wide Operating Range: Performs reliably across a broad temperature and humidity spectrum.
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Easy Integration: Seamlessly connects with Yokogawa’s control systems, simplifying setup.
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Durable Construction: Built to withstand harsh industrial environments.
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Diagnostic Features: Includes LED indicators for easy status monitoring and troubleshooting.
Frequently Asked Questions (FAQ)
-
What types of RTDs are compatible with the AAM21-S2 module?
The module supports Pt100, JPt100, Cu50, and Ni100 RTDs. -
How many RTD channels does the AAM21-S2 provide?
It offers 4 independent RTD input channels. -
What is the accuracy of the AAM21-S2 module?
The module provides an accuracy of ±0.1% of span. -
Is the module electrically isolated?
Yes, it features channel-to-channel and channel-to-ground isolation to prevent signal interference. -
What are the operating temperature and humidity ranges?
The module operates between -20°C to +70°C and 5% to 95% RH (non-condensing). -
How is the module mounted?
It is designed for DIN rail mounting, facilitating easy installation. -
What are the dimensions and weight of the AAM21-S2?
The module measures 42.9 × 130 × 146.8 mm and weighs 0.1 kg. -
Does the module support HART communication?
The AAM21-S2 utilizes Yokogawa’s proprietary communication protocol. For HART support, consider modules like the AAI141-H00. -
Is the AAM21-S2 suitable for hazardous environments?
Yes, it complies with CE, ATEX, CSA, FM, and IECEx standards for use in hazardous areas. -
What is the warranty period for the AAM21-S2 module?
We provide one year warranty.
Related Models (Same Series or Functional Equivalents)
| Model | Description |
|---|---|
| AAM21 | mV, Thermocouple, and RTD Input Module |
| AAM11 | Current/Voltage Input Module |
| AAR181-S00 | 16-Point RTD Input Module |
| AAI141-H00 | 8-Channel Analog Input Module with HART |
| AAI143-S00 | 8-Channel Analog Output Module |
| AAI835-H00 S2 | 16-Channel HART Analog Input Module |
Popular Yokogawa Modules (Same Brand)
| Model | Description |
|---|---|
| CP451-10 | High-Speed Control Processor Unit |
| ADV151-P03 | 16-Channel Digital Input Module |
| PW482-10 | Power Supply Module for FCUs |
| SAI143-H50 | Safety Analog Input with HART (ProSafe-RS) |
| AAR181-S00 | Remote I/O Node Interface Module |
| ADV161-P03 | 16-Channel Digital Output Module |
Frequently Asked Questions (FAQ)
-
What types of RTDs are compatible with the AAM21-S2 module?
The module supports Pt100, JPt100, Cu50, and Ni100 RTDs. -
How many RTD channels does the AAM21-S2 provide?
It offers 4 independent RTD input channels. -
What is the accuracy of the AAM21-S2 module?
The module provides an accuracy of ±0.1% of span. -
Is the module electrically isolated?
Yes, it features channel-to-channel and channel-to-ground isolation to prevent signal interference. -
What are the operating temperature and humidity ranges?
The module operates between -20°C to +70°C and 5% to 95% RH (non-condensing). -
How is the module mounted?
It is designed for DIN rail mounting, facilitating easy installation. -
What are the dimensions and weight of the AAM21-S2?
The module measures 42.9 × 130 × 146.8 mm and weighs 0.1 kg. -
Does the module support HART communication?
The AAM21-S2 utilizes Yokogawa’s proprietary communication protocol. For HART support, consider modules like the AAI141-H00. -
Is the AAM21-S2 suitable for hazardous environments?
Yes, it complies with CE, ATEX, CSA, FM, and IECEx standards for use in hazardous areas. -
What is the warranty period for the AAM21-S2 module?
We provide one year warranty.
Related Models (Same Series or Functional Equivalents)
| Model | Description |
|---|---|
| AAM21 | mV, Thermocouple, and RTD Input Module |
| AAM11 | Current/Voltage Input Module |
| AAR181-S00 | 16-Point RTD Input Module |
| AAI141-H00 | 8-Channel Analog Input Module with HART |
| AAI143-S00 | 8-Channel Analog Output Module |
| AAI835-H00 S2 | 16-Channel HART Analog Input Module |
Popular Yokogawa Modules (Same Brand)
| Model | Description |
|---|---|
| CP451-10 | High-Speed Control Processor Unit |
| ADV151-P03 | 16-Channel Digital Input Module |
| PW482-10 | Power Supply Module for FCUs |
| SAI143-H50 | Safety Analog Input with HART (ProSafe-RS) |
| AAR181-S00 | Remote I/O Node Interface Module |
| ADV161-P03 | 16-Channel Digital Output Module |
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
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