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YOKOGAWA SAI143-H33
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YOKOGAWA SAI143-H63
YOKOGAWA SAI143-H63

YOKOGAWA SAI143-H33

Product Name:​ ProSafe-RS / CENTUM VP 16-Channel Isolated Analog Input Module (HART-capable variant H33)
Product Introduction:​ High-density safety-rated analog input module for Yokogawa DCS/SIS, acquiring 4–20 mA field transmitter signals with channel-to-system isolation.
Category:
Description
Technical Specifications:
  • Channels: 16, individually isolated
  • Input Signal: 4–20 mA DC (allowable 0–25 mA)
  • Input Impedance: 250 Ω powered, ≥500 kΩ unpowered
  • Accuracy: ±16 µA (0.05–23 mA), ±0.1 % FS typical
  • Update Period: 40 ms module scan
  • Transmitter Supply: 16.15–26.4 V DC, 25 mA limit
  • Isolation: 1.5 kV AC 1 min input-to-system
  • HART: Supported per channel via shared modem
  • Backplane Power: 5 V DC 320 mA, 24 V DC 550 mA
  • Dimensions: 130 × 107.5 × 32.8 mm, 0.34 kg
  • Operating Temp: -20 to +60 °C
    Functional Features:​ Open-wire detection, over-range alarm, hot swap in powered rack, LED per channel, front pressure-clamp terminals, redundant rack support.
    Application Scenarios:​ Pressure/flow/level monitoring in refineries, chemical plants, power DCS, safety instrumented pressure trips.
    Notes:​ H33 denotes standard HART modem population; if replacing obsolete SAI143 base, confirm HART pass-through needed for smart valve positioners.
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