Monitoring of a Dehumidification System

Overview

A very serious problem with large suspension bridges is corrosion inside the main cables. One method of corrosion protection is to dehumidify the inside of the cable by blowing dry air through it. In this example, we show how to monitor such air-based dehumidification systems.

Customer Requirements

Requires remote monitoring of the system and conditions inside the cables.

  • Operating status of the dehumidification system
  • Temperature, humidity, air flow, wind pressure, and other parameters at various points along the cable
  • Notification of abnormalities
  • Contact output–based remote control of equipment

Yokogawa's proposed solution

Monitoring of a suspension bridge dehumidification system

Figure 1. Monitoring of a suspension bridge dehumidification system

Remote monitoring using the DX2000T + MW100

  • The MW100 measures temperature, humidity, air flow, wind pressure, and other parameters at various points.
    The MW100 has a wide operating temperature range (-20 to 60°C) offering reliability in harsh environments.
  • The DX2000T aggregates all of the data from the MW100 for remote monitoring and data acquisition.
  • Using customizable touch screens on the DX2000T, you can manually stop the system via the MW100.

Related Products & Solutions

DX1000T/DX2000T

Touch screen operator interface provides faster and more intuitive access to common functions.

Standalone MW100

For industrial DAQ applications, the MW100 offers scalability and can operate either standalone or integrated as a node within a larger automated system including SCADA or DCS.

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