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Cavitation can play a major role in the vibration of pumps during operation. With the PT 500.17 accessory set, cavitation can be experimentally induced and its influence on the vibration spectrum investigated.
The principal elements of the accessory set are a single-stage centrifugal pump and a storage tank. The pump and tank are interconnected by hoses. Valves and manometers in the delivery and intake lines allow various operating conditions to be set. The transparent plastic pump housing provides a view into the interior of the pump during operation. This enables the formation of cavitation bubbles to be observed. Stroboscopic analysis is specially recommended (stroboscope not supplied).
The pump can be driven directly through a flexible coupling on the base system PT 500 or by the PT 500.14 belt drive.
The accessory set is mounted on the base plate of the machinery diagnostic base system PT 500.
To measure and evaluate the experiment, the computerised vibration analyser PT 500.04 is required. It includes all the necessary sensors, a measuring amplifier and analysis software to record the vibration phenomena.
Learning Objectives / Experiments
- observing and understanding cavitation in a centrifugal pump
* stroboscopically (stroboscope available as accessory)
* by vibration analysis
- investigation of the operating vibrations of a centrifugal pump
- understanding and interpreting frequency spectra
- use of a computerised vibration analyser
 investigation of the conditions for cavitation in pumps
 single-stage centrifugal pump
 flow control valves permit the inception of cavitation
 manometers on intake and delivery side
 transparent housing
 pump driven via coupling (PT 500) or with belt drive PT 500.14
 accessory set for PT 500 machinery diagnostic training system
 stackable storage system to house the components
- max. flow rate at 3.300min-1: 17L/min
- max. head at 3.300min-1: 12m
- impeller with 3 blades
- min. speed for cavitation: approx. 2.240min-1(with restriction on intake side)
- material: HDPE
- capacity: 20L
- delivery side: 0...4bar
- intake side: -1...1,5bar
Dimensions and Weight
LxWxH: 600x400x320mm (storage system)
Weight: approx. 16kg
Scope of Delivery
1 set of hoses
1 storage system with rubber mat