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- Yokogawa
- AAR145-S50 S1
- RTD/POT 16-Channel Input Module (Isolated)
- Japan
- 130 x 127.2 x 32.8 mm
- 0.3 kg
- Xiamen, China
- New & In Stock
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Yokogawa AAR145-S50 S1 is a 16-channel isolated RTD/POT input module used in Yokogawa FIO / CENTUM distributed control systems. It is designed to acquire temperature (RTD) and resistance (potentiometer) signals from field devices and convert them into digital data for process control and monitoring.
This module is widely used in applications requiring high-accuracy temperature measurement and position feedback, with strong electrical isolation for industrial environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yokogawa |
| Model | AAR145-S50 S1 |
| Product Type | RTD / POT Input Module |
| System Compatibility | Yokogawa CENTUM / FIO systems |
| Function | RTD and potentiometer signal acquisition |
| Input Channels | 16 isolated channels |
| Input Types | RTD (Pt100), Potentiometer (0–10 kΩ) |
| Measurement Current | Approx. 1 mA (RTD) |
| Input Signal Range | RTD temperature + resistance input |
| Channel Configuration | Independently configurable channels |
| Signal Isolation | Channel-to-channel and system isolation |
| Accuracy | High precision industrial measurement |
| Burn-out Detection | Supported |
| Data Update Cycle | Periodic scanning (industrial control cycle) |
| Power Consumption | Low power industrial module |
| Communication | Backplane connection to controller |
| Mounting Type | Rack-mounted module |
| Operating Environment | Industrial control cabinet |
| Humidity Range | 5%–95% non-condensing |
| Dimensions | 130 × 127.2 × 32.8 mm |
| Weight | 0.3 kg |
Function and Working Principle
The AAR145-S50 S1 operates as a signal conversion and acquisition module.
Its core functions include:
- Receiving RTD signals for temperature measurement
- Receiving potentiometer resistance signals for position feedback
- Converting analog resistance values into digital process data
- Providing isolation between field wiring and control system
- Detecting sensor faults such as open circuit (burn-out detection)
- Ensuring stable long-distance industrial signal transmission
It acts as a front-end data acquisition module for temperature and resistance-based measurements.
Role in Industrial Control Systems
Within Yokogawa DCS architectures, the AAR145-S50 S1 provides:
- High-accuracy temperature monitoring
- Position and displacement feedback processing
- Reliable sensor signal acquisition in harsh environments
- Strong electrical isolation for system protection
- Integration into centralized process control systems
Industrial Applications
The Yokogawa AAR145-S50 S1 is widely used in:
- Power generation plants (turbine temperature monitoring)
- Oil and gas processing systems
- Chemical and petrochemical industries
- Industrial furnaces and thermal processes
- Machinery condition monitoring
- Process automation systems
Installation and System Integration
Recommended installation practices include:
- Installing in Yokogawa FIO / CENTUM I/O rack
- Ensuring correct backplane alignment
- Proper wiring for RTD (3-wire/4-wire) or POT input
- Verifying channel configuration before commissioning
- Maintaining shielding and grounding for noise reduction
Compatible System Components
The AAR145-S50 S1 typically works with:
- Yokogawa CENTUM controllers
- RTD temperature sensors (Pt100)
- Potentiometers and position sensors
- Other FIO input/output modules
- Field termination assemblies
- Process monitoring systems
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| AAR145-S50 S1 | RTD/POT input module | 16-channel isolated input | Temperature & position monitoring |
| AAI835-S53 | Analog I/O module | Multi-channel analog processing | General process control |
| AAI543-S53 | Analog input module | High-accuracy analog input | Monitoring systems |
| AAT145-S50 | TC/RTD input module | Thermocouple + RTD input | Thermal measurement |
| AAP135-S53/K4A00 | Pulse input module | High-speed signal acquisition | Flow & speed monitoring |
Key Advantages
- 16-channel isolated input design
- Supports both RTD and potentiometer signals
- High measurement accuracy and stability
- Strong electrical isolation for industrial safety
- Built-in sensor fault detection capability
- Seamless integration with Yokogawa DCS systems
Technical FAQs
What is the AAR145-S50 S1 used for?
It is used for temperature (RTD) and resistance (POT) signal measurement in industrial control systems.
How many channels does it support?
It supports 16 isolated input channels.
What sensors can it connect to?
RTD sensors (Pt100) and potentiometers (0–10 kΩ).
Is it a controller?
No, it is an input module for data acquisition.
Conclusion
The Yokogawa AAR145-S50 S1 RTD/POT Input Module is a high-precision industrial signal acquisition device designed for temperature and resistance measurement. With strong isolation, multi-channel capability, and reliable integration into Yokogawa DCS systems, it is widely used in process control and industrial automation applications.