Product Insight
The Yokogawa SAI143-H63 Analog Input Module is a high-integrity signal acquisition unit developed for advanced safety and process control systems. As part of the ProSafe-RS platform, this module integrates HART communication with enhanced environmental resilience, enabling precise monitoring and diagnostics in complex industrial operations.
Designed for continuous performance in critical environments, it offers stable data conversion, strong noise immunity, and seamless integration into redundant system architectures—making it a reliable backbone for modern automation strategies.
Technical Specifications & Physical Characteristics
| Parameter | Details |
|---|
| Manufacturer | Yokogawa |
| Model Number | SAI143-H63 |
| Module Type | Analog Input Module |
| Input Channels | 16 channels (module isolation) |
| Input Signal | 4–20 mA DC |
| Permissible Input Range | 0–25 mA |
| Accuracy | ±16 µA |
| Resolution | 16-bit equivalent |
| Data Update Rate | 40 ms |
| Communication | HART protocol |
| Withstand Voltage | 1.5 kV AC |
| Input Impedance | 250 Ω (power ON), ≥500 kΩ (power OFF) |
| Power Consumption | 320 mA @ 5V / 550 mA @ 24V |
| Operating Temperature | -20°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Dimensions (HxWxD) | approx. 11.5 × 2.25 × 9.0 cm |
| Weight | approx. 0.34 – 0.39 kg |
| Mounting | Rack / DIN rail compatible |
| Compliance | ISA G3 (corrosion-resistant environment) |
Application Fields
The SAI143-H63 is specifically designed for high-demand industrial scenarios where signal accuracy and system safety are paramount:
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Safety Instrumented Systems (SIS)
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Oil & gas refining and offshore platforms
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Chemical processing plants
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Power generation facilities
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Pharmaceutical manufacturing environments
Its ability to handle multiple isolated signals simultaneously makes it ideal for centralized monitoring of critical process variables such as pressure, flow, and temperature.
Technical FAQs
1. What type of signals does the SAI143 module process?
It processes standard 4–20 mA current signals from field instruments.
2. How many inputs can be handled simultaneously?
Up to 16 isolated analog input channels.
3. Is the module suitable for safety systems?
Yes, it is commonly used in safety instrumented systems with redundancy support.
4. What is the update speed for input data?
Approximately every 40 milliseconds.
5. Does it support different wiring types?
Yes, both 2-wire and 4-wire configurations are supported.
6. What level of accuracy does it provide?
Typical accuracy is ±16 µA depending on configuration.
7. Is electrical isolation included?
Yes, channel-to-channel and system isolation are built in.
8. What happens during power-off conditions?
Input impedance increases significantly to ≥500 kΩ for protection.
9. Can it be used in redundant setups?
Yes, dual-redundant configurations are supported for high availability.
10. Is this model still in production?
Some variants have been superseded by newer models such as SAI143-H53.
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