VDAS H47 - Experiment


PDF datasheet

A self contained floor standing mobile unit consisting of a water reservoir, pump, motor and Venturi meter for a comprehensive range of investigations into the performance and characteristics of a centrifugal pump. Demonstrates cavitation and the use of a Venturi Tube.

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A compact, mobile and fully self-contained centrifugal pump test set that allows students to find the characteristics of a centrifugal pump. It also allows them to see (and hear) cavitation and understand the use of a Venturi meter and differential pressure measurement to find flow rate.

A motor mounted in bearings drives the pump. The pump draws water from the integral reservoir. The water travels up through a valve and filter, through an inlet valve to the pump body, then out through a delivery valve. It then passes through a Venturi meter and returns to the reservoir for re-use. This self-contained water supply keeps water consumption to a minimum. The pump has 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 effect easier to see.

Instrument and control modules fit into a frame above and behind the pump. An electronic Motor Drive controls the pump speed. A strain gauge load cell measures the driving torque of the pump and a sensor measures pump speed. A display on the Motor Drive shows speed and torque and automatically calculates and displays true ‘shaft’ power. The differential pressure across the Venturi gives flow rate. The adjustable inlet and delivery valves allow students to create different operating conditions.

TecQuipment supply a Digital Pressure Display (DP1) as standard but offer an optional, additional easy-to-read Analogue Pressure Display (AP1). Both instruments display the inlet pressure, delivery pressure and differential pressure across the Venturi.

The Analogue Display is more visual, but the Digital Display increases ease of measurement, and allows connection to TecQuipment’s frame-mounted Versatile Data Acquisition System (VDAS-F, available separately).

The equipment can use both analogue and digital instrumentation at the same time, enabling students to compare the different pressure measurement methods.

  • 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
Case Study
East Tennessee State University Expand Engineering Laboratory Facilities

East Tennessee State University, which has a history of teaching engineering technology dating back to the 1930s, made the decision to expand the course offering in 2015 to include a BSc in General Engineering which combines courses from mechanical, civil and electrical engineering. To teach the course they needed an engineering laboratory that had equipment to practically teach the principles of civil and mechanical engineering. There were existing electrical engineering laboratories, to serve the BSc, in the electrical engineering technology programme. After going out to bid, TecQuipment won, based on a balance between price and functionality of equipment.

Read the full Case Study.

VDAS H83 - Experiment

A self contained floor 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.

VDAS MFP101 - Experiment

A self contained floor standing mobile unit with full instrumentation for studying and performing tests on a centrifugal pump and optional turbines, to understand how they work and calculate performance.

ST1 - Ancillary

A highly accurate and portable stroboscope providing 30 to 300,000 flashes per minute (FPM).

AP1 - Ancillary

An analogue pressure display module for use with compatible TecQuipment products.

VDAS-F (mkII) - Ancillary

A frame mounting versatile data acquisition system (VDAS) to allow computer-based data capture for a wide range of TecQuipment products.


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