Product Description

The Yokogawa AAP849-S00 is a high-density pulse-to-current signal conversion module designed for the CENTUM VP Integrated Control System. It converts high-frequency pulse train inputs into standardized 4–20 mA DC analog outputs, enabling seamless integration of frequency-based field instruments with analog control loops.

This module is ideal for interfacing devices such as flow meters, tachometers, and speed sensors, providing accurate real-time representation of rotational speed and flow rate. Support for dual-redundant system configurations ensures continuous operation in mission-critical applications. Built for harsh industrial environments, the AAP849-S00 delivers high accuracy across a wide operating temperature range, making it suitable for power generation and chemical processing facilities.

Technical Specifications

Industrial Applications

• Turbine Monitoring
  Converts turbine speed pulse signals into analog feedback for governor and control systems.

• Flow Measurement
  Integrates turbine or positive displacement flow meters into standard 4–20 mA DCS loops.

• Safety & Utility Systems
  Monitoring coolant flow, generator status, and auxiliary equipment in thermal and nuclear plants.

• Oil & Gas
  Real-time frequency-to-current conversion for wellhead instrumentation and storage monitoring.

Frequently Asked Questions

Q: Does the AAP849-S00 support redundancy?
A: Yes. It is compatible with dual-redundant CENTUM VP configurations, improving system availability.

Q: Can the module be configured remotely?
A: Yes. HART communication allows remote diagnostics, calibration, and maintenance.

Q: Is there electrical isolation between input and output?
A: No. This model is non-isolated, optimized for compact size and cost-effective systems with a common ground.