• For use with the Positive Displacement Pump Module this pump is ideal for student experiments, demonstrations and projects. 
• The gear pump is a positive displacement pump. 
• It has double gears that deliver a given volume of fluid (oil) for each full rotation of the pump shaft. 
• The gear rotation generally determines the flow direction, only test the pump in one direction, determined by the Universal Dynamometer. 
• Self-sealing connections reduce oil spillage and simplify installing the pump to the pump module.

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A range of circular metal plates on insulating handles suitable for transferring charge or investigating charge distribution in electrostatics investigations.
For use with a Van de Graaff generator. 
Plate sizes 20mm, 40mm and 60mm diameter

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Place liquid paraffin in the 90mm petri dish and sprinkle semolina or fine grass seed (not supplied) on the surface. 
A simple model for demonstrating electric fields between various electrode configurations. 
Apply a high voltage via the 4mm terminals and the field pattern is generated. 
The clear acrylic base allows the pattern to be projected via an overhead projector. (150 x 150 x 60). 
Note: This apparatus requires a safe, low-current limited 0-5kV EHT supply. Investigate electric fields

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The plate can be used to show discharge under UV Lighting and the photo-electric effect.
A 40 × 40mm zinc plate on a 4mm connector which can replace the top plate of an electroscope.
A suitable wavelength UV lamp is required.

• Axial flow pump, mounted in a mobile frame with full instrumentation, including a digital pressure display.
• Common motive-power source for a cost-eff ective solution.
• Fully variable speed and fl ow, for range of tests.
• Self-contained, has its own water reservoir and needs no external water supply.
• Allows students to study and test a common type of rotodynamic pump, safely and at a realistic scale.
• Part of Modular Fluid Power range which connects with the Universal Dynamometer 
• Connection plate with schematic diagram shows the water flow circuit and how parts of the module connect to each other.

• The Francis Turbine is a reaction turbine. 
• The turbine has adjustable guide vanes that control the water flow in the turbine. 
• They also direct the water at an angle to the blades of the impeller. 
• It is the most common turbine in the world, due to its ability to work for a wide range of applications. 
• Its moving part is a radial impeller. 
• Students learn how the guide vane setting affects how the turbine works. 
• The turbine has a clear viewing window and draft tube so that students can see the turbine working.

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The structure allows for the strip to be bent in either direction with travel limiters to prevent damage. 
Ideal for showing the principle of a metal foil resistive strain gauge. 
The device is bonded to a flexible plastic strip with connections brought out to 4mm sockets. 
The gauge has a resistance of 120 ohms and gives about 1 ohm change at maximum flex. 
For real measurements the unit would need to be used as part of a bridge network with suitable amplification. 
A step gauge is provided to enable the strip to be bent in 5mm increments.

Demonstrate mechanical to electrical energy conversion with a voltmeter, data-logger or oscilloscope. 
Consisting of a 15mm diameter ceramic element with integral, protective press-stud, the device gives voltage pulses of up to 20V when given a sharp tap. 
The reverse effect can also be shown by connection to a signal generator whereby the device converts the electrical signal to sound waves.