Armfield Engineering Education
CAPTURE FLUID MACHINES
FM52 Gear Pump Demonstration Unit - issue 2
The gear pump is the most widely used of the positive action rotary pumps. Two gear wheels operate inside a casing. One is driven whilst the other rotates in mesh with it. The liquid is carried around in the space between consecutive teeth and then ejected as the teeth mesh. The pump has no valves. It is a positive displacement pump and will deliver against high pressures. The output is a more even flow than that of a reciprocating pump. It is particularly suitable for high viscosity fluids.
Ordering Specification
• A small-scale gear pump demonstration unit, comprising of
a water reservoir, pump, control valve, relief valve and inter- connecting
pipework, all mounted on a stainless steel base.
• Equipped with electronic measurement sensors for pump
head pressure, flow-rate and water temperature.
• Transparent pump head for visibility
• Capable of being linked to a PC (not supplied).
• Supplied with software providing full instructions for setting up, operating, calibrating and performing the teaching exercises.
• Facilities are provided for logging, processing and displaying data graphically.
Full theoretical back-up is included together with a student questions and
answers session.
INSTRUCTIONAL CAPABILITIES
> Demonstration of a gear pump in operation.
> Measurement of constant-speed pump performance, including the production of characteristic curves of outlet pressure against:
flow rate
motor shaft power
pump speed
pump efficiency
volumetric efficiency
> Comparison of student calculations with computer results.
Description
A motor driven gear pump, mounted on a stainless steel plinth with a water reservoir and pipework for continuous circulation. The pump head and the water reservoir are manufactured from clear acrylic for maximum visibility.
A manually operated valve at the pump outlet allows control of the flow and a pressure relief valve protects the operator and the equipment. Electronic sensors measure the pump outlet pressure, the flow rate and the water temperature.
The pump speed is accurately controlled by an advanced electronic inverter within the IFD7 (an essential accessory). This inverter also calculates the torque produced at the motor drive shaft, allowing the power used by the pump to be derived. The IFD7 also provides the conditioning electronics for the sensors and allows their readings to be displayed on the computer software. Connections to the IFD7 are a single multiway connector for the sensors and a connector for the pump motor drive.
The equipment is provided with advanced education and data logging software.
See the software section of this datasheet for further details.
PERFORMANCE SPECIFICATION
Max flow rate: 6.5L/min typical
Max head: 25m
Max pump speed: 1800rpm
Motor power rating: 250W
SOFTWARE
Windows based software is supplied with the CAPTURE range of equipment offering a complete teaching package of coursework and laboratory investigation.
The familiar Windows environment allows the student to explore the principles of each machine quickly and easily, highlighting the difference between theoretical and practical measurements, thus providing a good understanding of the principles involved.
This software runs under Windows 98, 2000 or XP operating systems and has been designed for maximum flexibility and ease of use. Comprehensive ‘Help’ screens guide the student through both the theoretical background and the practical investigation of the machine under examination. Suggested laboratory investigations and further questions for the student to answer are included in the software, together with all the information required to set up and run the teaching exercises.
SOFTWARE CAPABILITIES
This software includes a range of functions and capabilities designed to make the operation of the equipment and processing of the results more straightforward, and also to enhance student understanding of the subjects being covered.
It includes:
> Diagrammatic representation of the equipment, complete with real time
display of the various sensor outputs
> Presentation screens, giving an overview of the software, the equipment, the procedure and associated theory
> Detailed ‘Help’ facilities giving in depth guidance
> Automatic data logging of sensor values into a spreadsheet format
> Control over sampling intervals
> Student questions and answers, including a layered ‘Hint’ facility
> Processing of sampled values (this may be linked to the questions and answers to ensure student understanding)
> Sophisticated graph plotting facilities of both measured and calculated values, including comparisons taken under different conditions
> Export of data to Microsoft Excel or other spreadsheets
> Links to user defined word processor
> Calibration facility for sensors
> Real time bar graph display of sensor outputs
> Recent history graphical display
TECHNICAL DETAILS
The analogue output data is digitised and transferred to a computer using the standard USB (Universal Serial Bus). This allows any standard modern Windows computer to be used, including notebooks, and does not require any internal access to the computer.
The equipment is supplied complete with a USB lead for connection to the computer.
The FM52 interfaces to the computer using the IFD7 device and the USB port of the computer.
Also available is a software driver that allows the outputs to be read in other software programs, such as Labview.
ESSENTIAL EQUIPMENT
• Armfield IFD7 Interface Unit
• PC with spare USB port
Shipping Specification
Volume: 0.75m³
Gross Weight: 1000kg
Overall Dimensions
Height: 0.41m
Length: 0.88m
Width: 0.51m
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