Posts Tagged ‘vibration’

Prüftechnik: Wireless vibration analysis

Monday, March 31st, 2014 von admin

Power stationVibconnect RF is a condition monitoring system for large facilities with many standard machines like pumps. Even if there is no line-of-sight between the base station and the sensor units, the wireless signals are transmitted error-free. A new firmware update elevates this wireless online condition monitoring system to a higher plane. With its wireless technology, it fits for applications, which require the wireless transfer of vibration measurement data over long distances. The new firmware update includes several powerful new features:

  • Sending status and alarm emails,
  • supporting Modbus TCP,
  • reducing data overload,
  • live visualization of measurement data and
  • providing a 24V sensor unit version.

The new features are supported by the current version of the proven Omnitrend software.

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Mitsubishi: Inverter for pump and water applications

Wednesday, October 24th, 2012 von admin

Mitsubishi Electric has upgraded the FR-F700-EC range of inverters with a number of functions that meet the specific needs of water and pumping applications. The new functions supported by the upgrade include

  • a pre-charge function,
  • built-in PLC functionality,
  • expandable I/O and
  • a unit calculator for PID control.

These enhancements increase the capability, flexibility and scope of the FR-F700-EC bringing improved control and reducing the cost and complexity of drive installations in many applications by eliminating the need for additional components.

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Automatic recirculation valve

Thursday, February 2nd, 2012 von admin

The SSV, a special automatic recirculation valve, automatically protects centrifugal pumps – especially boiler feed water pumps – against wear and damage, as can occur if the pump runs dry or during low-load operation. Typical damages are for example a temperature increase, which can lead to partial evaporation of the medium, or recirculation in the impeller. It can also lead to flow separation and cavitation in the pump. Similarly, increased vibration and mechanical stresses occur in the pump and cause damage. The SSV bypass control valve opens as soon as the process flow demand falls to the same level as the minimum flow required by the pump. In this way, the specified minimum continuous flow required by the pump is maintained, even if there is zero process flow demand.
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