Introduction — High-Accuracy Resistance Signal Interface for Advanced Process Control
The Yokogawa ASR133-S00 RTD/POT Input Module is a precision-engineered signal acquisition component designed for industrial automation systems that require reliable temperature and position feedback. Built for integration within Yokogawa CENTUM VP and CS series distributed control systems, this module converts resistance-based signals from RTDs (Resistance Temperature Detectors) and potentiometers into accurate digital data for real-time process monitoring.
With a strong focus on measurement stability and electrical isolation, it is widely used in environments where consistent sensor performance directly impacts operational efficiency and safety.
Technical Specifications
| Parameter | Specification |
|---|
| Module Type | RTD / POT Input Module |
| Input Channels | 8 isolated channels |
| Supported Signals | RTD (Pt100, Pt1000, Ni series), Potentiometer (0–10 kΩ) |
| Input Types | RTD / POT selectable per channel |
| Measurement Current | 150 µA |
| Input Voltage Range | ±5 V |
| Accuracy | High-precision (sensor dependent, typically ±0.1% class) |
| Update Cycle | ≤ 1 second |
| Isolation Voltage | 1500 V AC |
| Input Resistance | ≥ 1 MΩ |
| Operating Temperature | -20°C to +70°C |
| Power Consumption | ~150 mA (5 V DC), ~60 mA (24 V DC) |
| Dimensions (H × W × D) | 130 mm × 107.5 mm × 32.8 mm |
| Weight | ~0.3 kg |
Applications — Designed for Precision Sensing in Industrial Systems
The ASR133-S00 is widely used in process industries requiring accurate analog signal acquisition:
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Oil & gas refining and distribution systems
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Chemical and petrochemical plants
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Power generation and turbine monitoring
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Water treatment and environmental systems
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Industrial automation and manufacturing lines
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Distributed Control System (DCS) environments
It is especially effective in applications requiring precise temperature tracking or mechanical position feedback.
Advantages — Reliable Measurement with Industrial-Grade Stability
This module delivers a strong balance of accuracy, durability, and integration flexibility:
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Supports both RTD and potentiometer inputs in one module
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High channel isolation minimizes signal interference
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Stable long-term measurement performance
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Strong electrical insulation for industrial environments
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Flexible configuration per channel (RTD or POT selection)
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Compact design optimized for dense control cabinets
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Seamless compatibility with Yokogawa DCS platforms
These features make it a dependable choice for engineers prioritizing measurement integrity and system stability.
Technical FAQs
1. What is the main function of the ASR133-S00 module?
It converts RTD and potentiometer resistance signals into digital data for control systems.
2. How many input channels does it support?
It provides 8 individually isolated input channels.
3. What sensor types are supported?
RTDs such as Pt100 and Ni types, and 3-wire potentiometers.
4. Is each channel configurable?
Yes, each channel can be individually set to RTD or POT input mode.
5. What is the isolation level?
Up to 1500 V AC for reliable industrial protection.
6. What is the module’s weight?
Approximately 0.3 kg.
7. What systems is it compatible with?
Yokogawa CENTUM VP and CS series DCS platforms.
8. What is the operating temperature range?
Typically -20°C to +70°C depending on installation conditions.
9. What is the measurement current?
Around 150 µA for RTD excitation.
10. Can it handle noisy industrial environments?
Yes, it is designed with strong isolation and noise immunity.
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