NEWS ARCHIVE

Pump monitors bubble along

The irregular sounds of a corrupted pipeflow will now be enough to identify and diagnose the degr...

Siemens has developed an ultrasonic acoustic diagnostic system for preventative maintenance on oscillating positive-displacement pumps, able to detect leaks as small as two percent.

The Sitrans DA400 (Diagnosis Acoustic) uses an ultrasonic acoustic sensor mounted on the pump, able to detect the sudden formation and collapse of low-pressure bubbles in liquids, indicating a drop in efficiency of the pump and the location of leakage.

The acoustic sensor is connected to a diagnostic device by up to 20 metres of cable. The diagnostic device displays the results of the continuous monitoring onsite and sends the data to the control room via Profibus for analysis.

The Sitrans DA400 acoustic analyser can simultaneously and continuously monitor up to four independent delivery valves. Four additional inputs are also available for sensors for monitoring the pump diaphragms and oil. Configuration can be implemented locally or via Profibus.

The Sitrans DA400 has been specifically designed for use with all oscillating positive-displacement pumps, commonly used in the mining, wastewater, chemical and petrochemical industries.

Siemens claims the Sitrans DA400 provides unprecedented accuracy and cost efficiency, suggesting that the system can be used with critical pumps that have traditionally required personnel to regularly inspect the plant on foot, using their experience to listen for any faults.

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