Product Description

The ASI133-S00/SA3S0 is a high-reliability analog input module designed for the Yokogawa CENTUM VP and Yokogawa ProSafe-RS control platforms.

This module provides 8 channels of 4–20 mA DC signal acquisition, serving as the primary interface for process instrumentation such as:

• Pressure transmitters

• Flow transmitters

• Temperature transmitters

Each channel features full galvanic isolation, helping prevent electrical noise, ground loops, and field-side interference from affecting control system data integrity.

The ASI133-S00/SA3S0 is optimized for 2-wire transmitter loop powering, with integrated terminal wiring that provides both power supply and signal return paths. The module is bundled with the SA3S0 (ATSA3S) pressure clamp terminal block, ensuring:

• Gas-tight wiring connections

• Reduced installation complexity

• Improved mechanical reliability in high-vibration environments

This variant is primarily intended for cost-efficient, high-density monitoring of non-critical process loops while maintaining industrial reliability standards.

Technical Specifications

Application Scenarios

The ASI133-S00/SA3S0 is widely deployed in:

• Water and wastewater treatment facilities

• Chemical processing plants

• Petroleum refining operations

It is particularly suitable for applications requiring:

• High-density analog monitoring

• Stable loop-powered transmitter acquisition

• Cost-effective distributed process monitoring

Technical FAQ

Can the ASI133-S00/SA3S0 power field transmitters directly?
Yes. The module can supply loop power to standard 2-wire transmitters via its positive input terminals, eliminating the need for external field power supplies in most 4–20 mA loops.

Is this module compatible with HART devices?
No. This module is primarily designed for analog current signal acquisition. For full HART protocol transparency and digital diagnostics, the ASI133-H series variants should be used instead.