Overview of the Module
The Yokogawa SAI143-H03/A4D00 Analog Input Module is a high-reliability signal acquisition unit engineered for advanced distributed control and safety systems. Featuring HART communication capability and a dual-redundant terminal configuration, this module is optimized for mission-critical applications where data accuracy and system continuity are essential.
With its refined design and enhanced diagnostics, it ensures precise analog signal processing while supporting stable long-term operation in demanding industrial environments.
Engineering Specifications & Physical Data
| Parameter | Details |
|---|
| Manufacturer | Yokogawa |
| Model Number | SAI143-H03/A4D00 |
| Module Type | Analog Input Module |
| Input Channels | 16 channels (isolated) |
| 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 (H suffix) |
| Isolation | Channel-to-channel & system isolation |
| 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 |
| Dimensions (HxWxD) | 11.9 × 5.8 × 2.3 cm (approx.) |
| Weight | 0.34–0.39 kg |
| Terminal Type | Dual-redundant pressure clamp (/A4D00) |
| Wiring Configuration | 2-wire / 4-wire selectable |
Industrial Applications
This module is widely implemented in environments where signal integrity and redundancy are essential. Typical applications include:
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Safety Instrumented Systems (SIS)
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Oil & gas upstream and downstream facilities
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Power generation and turbine monitoring
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Chemical and petrochemical processing plants
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Critical process monitoring in pharmaceutical production
Its dual-redundant terminal design significantly enhances system availability, making it ideal for safety-critical operations.
Technical FAQs
1. What does the “H03” designation indicate?
It signifies HART communication capability and compliance with enhanced environmental standards.
2. What is the function of the /A4D00 option?
It provides a dual-redundant pressure clamp terminal block for improved reliability.
3. How many signals can the module process simultaneously?
Up to 16 isolated analog input signals.
4. Does it support redundant system configurations?
Yes, it is suitable for redundant architectures in safety systems.
5. What type of signals are supported?
Primarily 4–20 mA current signals.
6. Can it communicate with smart field devices?
Yes, via HART protocol for diagnostics and parameter access.
7. What is the update speed of input data?
Approximately every 40 milliseconds.
8. Is channel isolation included?
Yes, full isolation enhances measurement stability and safety.
9. What installation environment is recommended?
Industrial control cabinets within specified temperature ranges.
10. Does it support explosion protection configurations?
Yes, depending on selected suffix and option codes.
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