Product Overview
The Yokogawa SAI143-S03 Analog Input Module is a 16-channel analog input module designed for Yokogawa ProSafe-RS and related safety automation platforms. It is engineered to receive 4 to 20 mA current signals from field instruments and provide reliable analog signal acquisition within Yokogawa modular I/O architectures.
The SAI143-S03 belongs to the SAI143 analog input series and features a module-isolated design, supporting accurate signal processing, flexible wiring arrangements, and compatibility with Yokogawa installation systems. The module can be configured for individual 2-wire or 4-wire connection settings and supports redundant system architectures where required.
With its compact structure, high-density 16-channel configuration, and proven Yokogawa design philosophy, the SAI143-S03 is widely applied in process industries, system upgrades, and long-term maintenance projects where dependable analog signal input is essential.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Yokogawa |
| Model | SAI143-S03 |
| Product Type | Analog Input Module |
| Module Series | SAI143 |
| Input Channels | 16 channels |
| Input Type | Analog Current Input |
| Rated Input Range | 4 to 20 mA |
| Permissible Input Range | 0 to 25 mA |
| Input Structure | Module Isolation |
| Input Impedance (Power ON) | 250 Ω + current value |
| Input Impedance (Power OFF) | Minimum 500 kΩ |
| Rated Accuracy | ±16 μA (Input range 1 to 23 mA) |
| Data Update Frequency | 40 ms |
| Temperature Drift | ±16 μA / 10°C |
| Transmitter Power Supply | 16.15 V minimum at 20 mA; 26.4 V maximum at 0 mA |
| Output Current Limit | 25 mA |
| Wiring Configuration | Individual 2-wire / 4-wire setting |
| Connection Method | Pressure Clamp Terminal / MIL Cable / Dedicated Cable |
| Withstand Voltage | 1.5 kV AC for 1 minute |
| Maximum Current Consumption | 320 mA (5 V DC), 550 mA (24 V DC) |
| Environmental Compatibility | ISA Standard G3 |
| Operating Temperature | Approx. -20°C to +70°C |
| Installation Method | Modular Rack Installation |
| Dimensions (Approx.) | 51 × 127 × 127 mm |
| Approximate Weight | 0.34 kg |
Typical Applications
The Yokogawa SAI143-S03 Analog Input Module is designed for industrial environments where accurate current signal acquisition and reliable I/O integration are required.
Typical applications include:
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Oil and gas processing facilities
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Petrochemical plants
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Chemical production facilities
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Power generation systems
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Water and wastewater treatment projects
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Manufacturing automation installations
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Process monitoring applications
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Yokogawa ProSafe-RS system expansion
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Industrial equipment replacement projects
The 16-channel design allows users to integrate multiple analog measurement points into a compact modular installation while maintaining organized cabinet layouts.
Key Features & Benefits
The SAI143-S03 Analog Input Module offers several advantages:
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16-channel analog current input capability
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Supports standard 4 to 20 mA signals
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Module isolation design for improved signal stability
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High-density modular construction
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Supports 2-wire and 4-wire instrument connections
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Compatible with Yokogawa ProSafe-RS platforms
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High measurement accuracy
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Fast 40 ms data update frequency
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Flexible terminal and cable connection options
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Suitable for system expansion and replacement applications
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Designed for continuous industrial operation
Technical FAQs
1. What is the Yokogawa SAI143-S03?
The SAI143-S03 is a 16-channel analog input module designed for Yokogawa ProSafe-RS and compatible I/O systems.
2. How many input channels does the SAI143-S03 provide?
The module provides 16 isolated analog input channels.
3. What signal type does the SAI143-S03 support?
The module supports 4 to 20 mA current input signals with a permissible input range of 0 to 25 mA.
4. Does the SAI143-S03 support signal isolation?
Yes. The module uses a module isolation structure to improve signal interface reliability.
5. What is the accuracy specification of the SAI143-S03?
The rated accuracy is approximately ±16 μA for the 1 to 23 mA input range.
6. What is the update frequency of this module?
The SAI143-S03 provides a data update frequency of approximately 40 ms.
7. What wiring methods are supported?
The module supports pressure clamp terminals, MIL cable connections, and dedicated Yokogawa cable solutions.
8. Can the SAI143-S03 support redundant configurations?
Yes. The SAI143 series can be configured for dual redundant arrangements in compatible Yokogawa architectures.
9. What are the dimensions of the SAI143-S03?
The approximate dimensions are 51 × 127 × 127 mm.
10. What is the weight of the SAI143-S03?
The approximate module weight is 0.34 kg.
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