Armfield Engineering Education
CAPTURE FLUID MACHINES
FM53 Plunger Pump Demonstration Unit - issue 2
The plunger or ram pump is a positive displacement pump and is used for pumping small quantities of liquid at high pressures. It is similar to a piston pump except that the sealing gland is at one end of the cylinder.
The reciprocating motion of the plunger gives an uneven flow, although the inclusion of a damping vessel can reduce this effect. Priming is unnecessary.
Ordering Specification
• A small-scale plunger pump demonstration unit, comprising of a water reservoir, pump, control valve, relief valve and interconnecting pipe work, all mounted on a stainless steel base.
• Includes both a sprung loading valve
and a needle valve for loading
the pump.
• Equipped with electronic measurement sensors for cylinder pressure, plunger position, pump outlet pressure and cumulative flow.
• Pulsation damping facility.
• Transparent pump head for visibility.
• Capable of being linked to
a PC (not supplied) via an interface console
(an essential accessory).
• Supplied with software providing full instructions for setting up, operating, calibrating and performing the teaching exercises. Facilities provided for logging, processing and displaying data graphically.
• Full theoretical back-up included together with a student questions and answers session.
INSTRUCTIONAL CAPABILITIES
• Measurement during each pump cycle of:
> plunger displacement
> cylinder pressure
> pump outlet pressure
• On-line P-V diagram displays
• Measurement of volumetric efficiency
• Measuring the effect on pump performance of:
> sprung loading valve or needle valve
> adjusting the outlet loading valve
> the inclusion of a pulsation damper vessel
Description
A motor driven plunger pump, mounted on a stainless steel plinth with a water reservoir, pulsation damper and pipework for continuous circulation. The pump head, measuring tank, pulsation damper and the water reservoir are manufactured from clear acrylic for maximum visibility. The pump outlet is connected to both a sprung loading valve and a needle valve to investigate different loading characteristics. A pressure relief valve protects the operator and the equipment. An additional valve can be used to isolate or include the pulsation damper, allowing the effect of damping to be investigated
Electronic sensors measure the instantaneous cylinder pressure within the pump, the pump displacement and the cumulative flow over a period of time.
The pump speed is accurately controlled by an advanced electronic inverter within the IFD7 (an essential accessory). 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 multi-way 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: 0.725 l/min typical
Max head: 4 bar
Swept volume: 15mm stroke x 32mm diameter
Pumping speed: variable up to 60 strokes/minute
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 FM53 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: 1.00m³
Gross Weight: 120kg
Overall Dimensions
Height: 0.41m
Length: 0.88m
Width: 0.51m
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