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ASI133-S00

The Yokogawa ASI133-S00 is an 8-channel isolated analog input module with built-in barrier, designed for acquiring 4–20 mA current signals in industrial control systems. It offers high accuracy, fast data updates, HART communication support, and robust intrinsic safety features, making it ideal for demanding process automation applications.

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Technical Specifications

Input Channels: 8 isolated channels

Input Signal: 4–20 mA

Allowable Input Current: up to 22.5 mA

Withstanding Voltage: 1500 V AC (field to system)

Input Resistance:

Power ON: 2-wire 400–750 Ω; 4-wire 485–925 Ω

Power OFF: ≥ 1 MΩ

Accuracy: ±16 µA

Step Response Time: 100 ms

Data Update Period: 10 ms

Transmitter Power Supply: ≥ 16 V DC, limited to 20 mA

Max Input Voltage (4-wire): 25 V (normal mode)

Temperature Drift: ±16 µA per 10 °C

Current Consumption: 150 mA @ 5 V DC; 450 mA @ 24 V DC

Weight: Approx. 0.30 kg

Connection: Pressure clamp terminal

HART Communication: Supported

Barrier: Built-in isolation barrier

Intrinsic Safety Parameters (typical): Voc 27.8 V, Io 84 mA, Po 584 mW (2-wire, single channel)

Operating Temperature: –20 °C to +70 °C (with corrosion resistance option, ISA G3 class)