Yokogawa NFAF135-S50 S1 Frequency Input Module

The Yokogawa NFAF135-S50 S1 Frequency Input Module is a high-precision input module designed for integration with Yokogawa’s distributed control systems (DCS). It is specifically engineered to accurately capture and process frequency signals from various field instruments such as flow meters, tachometers, and pulse-type sensors.

This module provides robust and stable frequency measurement capabilities, ensuring reliable data acquisition and process control even in harsh industrial environments. Its design supports direct connection of frequency signals with minimal signal distortion, enabling precise process monitoring and control for industries like power generation, chemical processing, and oil & gas.

With compatibility across Yokogawa’s DCS platforms, the NFAF135-S50 S1 module is an essential component for applications requiring high-fidelity frequency monitoring and control, facilitating accurate real-time process feedback and optimization.

Product Specifications

Applications

• Flow Measurement: Accurately monitors turbine or electromagnetic flow meters for liquid and gas.

• Rotational Speed Monitoring: Measures rotational speed of motors, turbines, and compressors.

• Pulse Counting: Integrates pulse signals from level sensors or flow totalizers.

• Industrial Automation: Provides frequency input for process control loops.

• Power Generation: Tracks generator speed and frequency signals for precise control.

• Chemical and Petrochemical Plants: Monitors instrument outputs to maintain stable process conditions.

Advantages

• High Accuracy: ±0.1% ensures reliable frequency measurements.

• Wide Input Range: Supports low-frequency and high-frequency signals from 0.1 Hz to 10 kHz.

• Fast Response: 10 ms response time enables near real-time data acquisition.

• Robust Construction: Reliable operation in industrial environments, resistant to electrical noise.

• System Compatibility: Seamless integration with Yokogawa DCS platforms.

• Safe Isolation: 2500 V DC isolation prevents signal interference and protects the system.

FAQ

1. What types of signals can the NFAF135-S50 S1 module receive?

   It can receive both pulse and frequency signals from various industrial sensors.

2. What is the voltage range for input signals?

   The module accepts DC input signals between 5 V and 24 V.

3. What is the maximum frequency measurable by this module?

   It can measure frequencies from 0.1 Hz up to 10 kHz accurately.

4. How precise are the frequency readings?

   The module provides measurements with an accuracy of ±0.1%.

5. What is the module’s response time for capturing signals?

   The response time is 10 milliseconds, suitable for real-time monitoring.

6. Can it be used with flow meters or tachometers?

   Yes, it is compatible with turbine flow meters, electromagnetic flow meters, and tachometers.

7. Does the module offer isolation from the DCS system?

   Yes, it provides 2500 V DC isolation to prevent interference and protect the system.

8. What temperature range can the module operate in?

   It operates reliably between 0°C and +55°C under normal conditions.

9. Is it compatible with Yokogawa DCS controllers?

   Yes, it integrates seamlessly with Yokogawa distributed control systems.

10. What type of applications is it best suited for?

    It is ideal for monitoring frequency signals in process control, automation, and instrumentation systems.