A self-contained, fl oor-standing mobile unit consisting of a water reservoir, two pumps and motors and a Venturi meter for a comprehensive range of investigations into the performance and characteristics of two centrifugal pumps in both series and parallel.
Key features
• Self-contained, mobile two-stage centrifugal pump test set for a range of tests and demonstrations
• Pumps have a transparent ‘window’ to allow students to see clearly the impellers, the water fl ow and cavitation
• Pumps can be tested individually, in series and in parallel, with independent speed control
• Demonstrates how to use a Venturi meter and diff erential pressure measurement to fi nd fl ow rate
• Optional stroboscope allows students to see clearly the eff ects of cavitation around a pump impeller
• Motor drives have digital displays of pump speed, torque and calculated true ‘shaft’ power
• Optional easy-to-read analogue instrumentation
• Works with TecQuipment’s Versatile Data Acquisition System (VDAS®)
Description
A compact, mobile and fully self-contained centrifugal pump test set, that allows students to fi nd the characteristics of centrifugal pumps working alone or in series or parallel. It also allows students to see (and hear) cavitation and understand the use of a Venturi meter and diff erential pressure measurement to fi nd fl ow rate.
Two bearing-mounted motors drive each pump independently. The pumps draw water from the integral reservoir. The water travels through strainers and a series of valves to be delivered to a Venturi meter. The water then returns to the reservoir for re-use, keeping water use to a minimum. The pumps each have a transparent ‘window’ so students can see the impeller turning and how the water vapour bubbles form in the pump at cavitation. The optional stroboscope makes the eff ect easier to see.
Learning outcomes
Comprehensive demonstrations and investigations into a centrifugal pump including:
• Centrifugal pump performance and characteristics, typically head versus flow and efficiency versus flow
• Non-dimensional performance characteristics
• Flow measurement using a Venturi tube
• Demonstration of cavitation
• Operation of centrifugal pumps in series
• Operation of centrifugal pumps in parallel
Recommended Ancillaries
• Versatile Data Acquisition System – frame-mounting version (VDAS-F)
• Stroboscope (ST1)
• Analogue Pressure Display (AP2)
