Description
YOKOGAWA SAI143-H53 Product Overview
The YOKOGAWA SAI143-H53 is a high-density, intrinsically safe analog input module designed for hazardous area applications in oil & gas, chemical, and pharmaceutical industries. This advanced I/O module provides 16 channels of isolated analog input with Ex ia certification for Zone 0/1 installations in Yokogawa’s CENTUM VP and ProSafe-RS systems.
Key Features
✔ 16-channel intrinsically safe analog input
✔ ATEX/IECEx Zone 0/1 certification
✔ Universal signal support (TC, RTD, mA, V)
✔ ±0.1% accuracy for precise measurement
✔ Hot-swappable design for maintenance without shutdown
Technical Specifications
| Parameter | Specification |
| Model | SAI143-H53 |
| Manufacturer | YOKOGAWA |
| Type | Intrinsically Safe Analog Input Module |
| Channels | 16 |
| Input Signals | TC (J/K/T/E/R/S/B/N), RTD (Pt100/JPt100), 4-20mA, 0-10V |
| Hazardous Area Cert. | ATEX, IECEx (Zone 0/1) |
| Accuracy | ±0.1% of span (voltage/current), ±1°C (TC) |
| Isolation | Channel-to-channel & field-to-system |
| Barrier Type | Entity & FISCO approved |
| Operating Temp. | -20°C to +60°C |
| Power Supply | 24V DC (intrinsically safe) |
| Mounting | DIN rail (TS35) |
| Dimensions | 45mm (W) × 130mm (H) × 120mm (D) |
YOKOGAWA SAI143-H53
Main Features & Benefits
1. Hazardous Area Safety
Ex ia IIC T4 certification for explosive atmospheres
Galvanic isolation between hazardous/safe areas
Dual-compartment housing separates IS/non-IS circuits
2. Precision Measurement
Cold junction compensation for TC inputs
Advanced filtering for noise immunity
100ms/channel scan rate
3. Maintenance & Diagnostics
Hot-swappable without system shutdown
Per-channel LED diagnostics
Predictive maintenance alerts via system software
YOKOGAWA SAI143-H53
Application Field
Oil & Gas (Hazardous Areas)
✔ Offshore platform instrumentation
✔ Refinery process monitoring
✔ Gas compression stations
Chemical/Pharmaceutical
✔ Reactor temperature monitoring
✔ Batch process control
✔ Solvent handling areas
Power Generation
✔ Hydrogen-cooled generator monitoring
✔ Turbine lube oil temperature
Related Products
| Model | Description |
| SAI143-H33 | Non-IS 16-channel version |
| SAI533-H63 | 32-channel IS version |
| SAO143-H53 | IS analog output module |
| FCS401-IS | Intrinsically safe field control station |
Installation & Maintenance
Installation Requirements
Must be installed by Ex-certified personnel
Follow IS cabling requirements (IEC 60079-14)
Verify entity parameters match field devices
Maintenance Procedures
Annual IS compliance checks
Calibration verification every 2 years
Terminal inspections every 6 months
