Description
Product Description
Overview
The Yokogawa SAI143-S33 is a high-precision analog input module designed for reliable DC millivolt signal conversion and isolation. It is widely applied in chemical process weighing, battery voltage monitoring, and tension detection in rolling mills. The module converts low-level mV/VDC input signals into standard 4-20mA or 1-5V DC output with excellent stability.
Key Features
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Supports DC input signals ranging from ±20mV to ±10V across 10 selectable ranges
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Switchable output: 4-20mA or 1-5V DC
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High accuracy with minimal temperature drift ensures precise measurement in industrial environments
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Isolation between input, output, and power up to 1500V AC
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Superior common mode rejection of 140dB at 50/60Hz
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Fast response time: 0 to 90% in less than 300ms
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Flexible power supply: 20-130V AC/DC or 15-30V DC
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Wide operating temperature: -20°C to 65°C
Technical Specifications
| Parameter |
Specification |
| Input Signal |
DC ±20mV to ±10V, 10 ranges |
| Output Signal |
4-20mA or 1-5V DC (selectable) |
| Accuracy |
±0.05% Full Scale at 23C ±2C |
| Temperature Drift |
±0.0075% Full Scale per °C |
| Isolation |
1500V AC (Input/Output/Power) |
| Common Mode Rejection |
140dB at 50/60Hz |
| Response Time |
≤300ms (0 to 90% step) |
| Power Supply |
20-130V AC/DC or 15-30V DC |
| Ambient Temperature |
-20C to 65C |
Applications
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Precision weighing and batching in chemical processing
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Battery voltage monitoring in production lines
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Tension measurement and control in steel rolling mills
FAQ
Q: Can this module handle multiple input ranges?
A: Yes, the SAI143-S33 supports 10 different DC input ranges from ±20mV up to ±10V, configurable for various sensors.
Q: Is the output configurable?
A: Yes, users can select either 4-20mA or 1-5V DC output depending on system requirements.
Q: What environments can it operate in?
A: It is suitable for industrial conditions with temperatures from -20°C to 65°C and provides robust isolation against electrical noise.
Similar Models Comparison
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SAI142 Series: Lower accuracy, faster response, limited input range
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SAI144 Series: Extended temperature range, higher input voltage tolerance
