YOKOGAWA SAI533-H33

Product Name: Intrinsically Safe 16-Channel Analog Input Module (Ex ia, Zone 0/1)

Product Introduction: Hazardous-area variant of Yokogawa analog input line, integrating entity/FISCObarriers so field transmitters in explosive atmospheres connect directly without external isolators.

Category: Yokogawa

Description

Technical Specifications:

Channels: 16 intrinsically safe analog inputs
Signal Types: 4–20 mA, 0–10 V, RTD Pt100, thermocouple (J/K/T/E/R/S/B/N)
Hazardous Cert: ATEX, IECEx Ex ia IIC/IIB Zone 0/1
Accuracy: ±0.1 % span, TC ±1 °C with CJC
Isolation: Galvanic channel-to-channel and field-to-system
Barrier Type: Entity and FISCO approved
Operating Temp: -20 to +60 °C
Mounting: DIN rail TS35 in Yokogawa I/O rack
Dimensions: 45 × 130 × 120 mm typical

Functional Features: Cold junction compensation, hot-swap, per-channel LED, predictive diagnostics, intrinsically safe power limited per entity parameters.

Application Scenarios: Offshore platform gas compressors, solvent handling in pharma, reactor skin thermocouples in explosive zones, refinery blast-proof field termination.

Installation Requirements: Only certified personnel for Ex cabling; verify entity parameters (Voc, Isc, Ca, La) against field transmitter; use shielded grounded cable with proper gland selection; do not mix safe and unsafe wiring in same duct.

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