Product Description

Overview

The SAV144-S33 is a high-precision Analog Input Module from Yokogawa, designed for use with CENTUM VP and ProSafe-RS systems. This module provides 16 isolated input channels to interface with field sensors and transmitters, converting analog signals into digital data for control or safety processing. The -S33 variant features G3 conformal coating, ensuring robust protection in harsh industrial environments.

The module supports dual-redundant operation with compatible terminal boards, providing enhanced reliability for critical process control and safety applications.

Key Features

High-Density Input Capability

• 16 analog input channels in a single compact module

• Reduces control cabinet footprint and hardware cost per point

Versatile Signal Compatibility

• Accepts standard industrial signals: 4–20 mA DC or 1–5 V DC

• Can be used to monitor pressure, flow, temperature, and level transmitters

High Accuracy and Stability

• Advanced A/D conversion ensures precise measurement and low noise

• Excellent temperature stability and interference rejection for reliable data

Built-In Diagnostics

• Channel monitoring detects open-circuit or short-circuit conditions

• Front-panel LEDs (STATUS, HRDY) indicate module health and communication status

Environmental Hardening

• G3 Conformal Coating protects against moisture, dust, and corrosive gases such as H₂S and SO₂

• Suitable for offshore platforms, chemical plants, and high-humidity environments

Flexible Connection Options

• Pressure clamp terminal, MIL cable, or dedicated signal cable (KS1)

• Module weight: 0.24–0.29 kg depending on connection type

Technical Specifications

Applications

• Analog data acquisition for CENTUM VP and ProSafe-RS systems

• Safety instrumented system input channels for process monitoring

• Harsh industrial environments requiring corrosion and moisture resistance

• High-density I/O setups for chemical, offshore, and power plant applications

FAQ

Q: What signals can the SAV144-S33 accept?
A: It supports 4–20 mA DC, 1–5 V DC, and 1–10 V DC inputs for a wide range of field transmitters.

Q: Can the module operate in corrosive environments?
A: Yes, the S33 variant is coated with G3 conformal coating for protection against moisture, dust, and corrosive gases.

Q: How is dual-redundancy supported?
A: By installing a second SAV144 module with a redundant-capable terminal board, the system can maintain uninterrupted operation in critical applications.

Q: Are there multiple connection options?
A: Yes, you can use pressure clamp terminals, MIL cables, or dedicated signal cable (KS1) depending on the installation requirements.