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Axial Flow
Turbine Engine - CM4
CM4 is an axial flow gas turbine using
jet fuel or kerosene.
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ENGINE SYSTEMS – CM Series
The engines are mounted on a steel frame
which holds all the associated equipment
to carry out a number of educational
demonstrations and investigations.
The
CM12 is equipped
with a variable load eddy current dynamometer.
All the engines have numerous sensors
which can be linked to a PC running Windows
to record data. |
Gasolene
Engine - CM11
CM11 is a four cylinder water cooled
gasoline or LPG engine teaching system.
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Automotive
Diesel Engine - CM12
CM12 is an automotive diesel engine teaching
system
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CAPTURE MkII represents a complete system
of demonstration units and comprises:
Turbines,
Fans, Pumps, and Compressors all complemented
by our own integrated Windows based software,
offering a complete teaching package
of course work and laboratory investigation.
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CAPTURE
MKII
The Armfield CAPTURE range is a unique
range of small scale teaching equipment,
designed to give students an unparalleled
insight into the principles of these
machines.
With the introduction of CAPTURE,
machines that were once costly, cumbersome
and
difficult to use became affordable,
space saving and easy
to use. Now CAPTURE MkII takes the
concept forward into new realms of student
understanding,
adding superb visibility of the working
of the machines and taking full advantage
of the latest software and instrumentation
techniques.
All the CAPTURE units use
standard PCs to display, record and
manipulate the
data. The world-beating Armfield educational
software provides extensive facilities
aimed specifically
at engineering education
and enhancing the learning experience.
A common software format is used across
all machines. Similarly the machines
all use a common interface unit, thus
providing a cost effective solution when
more than one demonstration is required.
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Centrifugal
Fan - FM40
The centrifugal fan is a radial flow
machine which produces the necessary
pressure to move gas by the centrifugal
force built up inside the fan casing.
The design of the fan blade has a primary
influence on performance. These types
of fans are usually employed for ventilating
duties requiring a somewhat
higher delivery pressure than that available
from axial fans.
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FANS
– CAPTURE FM40 Series
THE AIR FLOW MACHINES
The CAPTURE MkII
Air Flow Machines are designed to demonstrate
to engineering students the operating
principles and characteristics of different
types of fans and compressors. Three
different machines are available, a centrifugal
fan, an axial fan and
a centrifugal compressor. |
Axial
Fan - FM41
The axial fan produces gas flow by virtue
of the momentum changes imparted across
the rotary blades, parallel to the axis
of rotation. Such fans are more suitable
for higher flows at lower delivery pressures
than their centrifugal counterparts.
Comparison of the performance characteristics
of
the FM41 Axial Fan with those of the
FM40 Centrifugal Fan thus provides an
instructional exercise of valuable practical
application.
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Centrifugal
Compressor - FM42
Multi-stage compressors are used industrially
for high pressure deliveries
of gas flows or suction duties. The kinetic
energy imparted to the gas by the impeller
rotation is converted
into pressure energy which progressively
increases from stage to stage.
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COMPRESSORS
– CAPTURE FM40 Series
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Centrifugal
Pump - FM50
The centrifugal pump is the machine
most commonly used to move liquids from
one place to another. As such it is a
particularly instructive unit with which
to introduce
students to the whole subject
of rotodynamic fluid machines.
Discovering
the relationship between head, flow,
rotational speed and power
provides a framework of general applicability.
For example, matching the required
duty point to the conditions of maximum
energy
efficiency may be explored as a creative
student project.
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PUMPS
– CAPTURE FM50 Series
The CAPTURE MkII Pumps are designed to demonstrate to engineering students the operating principles and characteristics of different types of pumps.
Three different pump types are available, a centrifugal pump, a gear pump and a plunger pump, all using identical electric motors to allow a realistic comparison to be made. Also the FM51 includes two centrifugal pumps, which can be configured as single pump, two pumps in parallel and two pumps in series. |
Series/Parallel
Pump - FM51
Centrifugal pumps are often used together
to enhance either the flow rate or the
delivery pressure beyond that available
from the single pump. The unit is designed
to demonstrate the operational advantages
of parallel or series operation, depending
on the required duty.
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Gear
Pump - FM52
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.
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Plunger
Pump - FM53
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.
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Turbine
Service Unit - FM6X
The FM6X Turbine Service unit provides
a water supply which is required to
operate the FM60, FM61 and FM62 turbine
demonstrations.
The service unit consists of a stainless
steel base on which is mounted a water
reservoir, a compact three-phase pump
and an electronic flow meter. The pump
is controlled direct from the computer
using the speed controller inside the
IFD7 USB interface console.
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TURBINES
– CAPTURE FM60 Series
The CAPTURE MKII Turbines are designed to allow students to investigate the performance of different types of water turbine. Four models are available, three compact units which fit onto a common service unit, and one larger, self contained floor standing unit. |
Impulse
Turbine - FM60
The FM60 is a small scale impulse turbine
unit which is designed to be used in
conjunction with the FM6X service unit.
An impulse
turbine uses the momentum
transferred from the impact of a jet
of water onto the turbine blades to generate
power.
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Reaction
Turbine - FM61
The FM61 is a small scale reaction turbine
unit which is designed to be used in
conjunction with the FM6X service unit.
A reaction turbine uses the momentum
transferred from the reaction of a jet
of water leaving a nozzle to generate
power.
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Pelton
Turbine - FM62
The FM62 is a small scale Pelton turbine
unit which is designed to be used in
conjunction with the FM6X service unit.
A Pelton turbine uses the momentum transferred
from the impact of a jet of water onto
its buckets to generate power.
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Propeller
Turbine - FM63
The FM63 is a self contained, small
scale propeller turbine unit. This fixed
blade, axial flow turbine may be considered
as the prototype form of a propeller
turbine, itself a forerunner of the Kaplan
turbine.
The inclusion of angled inlet
guide vanes and the design of the runner
blades utilise both impulse and reaction
effects. It can be demonstrated that
this type of machine works most efficiently
where high flows at relatively low
heads are available.
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Pump
Test Accessory -
FM64
The FM64 is a compact accessory which
allows the FM6X service unit to be
used as a pump test accessory.
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Armfield
Software
Armfield equipment can usually be connected
to a PC running Windows via an interface
device. The software is designed to run
exclusively on Armfield machines and is
aimed at allowing students and teachers
to get the maximum benefit from time spent
in the laboratory.
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Armfield
CAPTURE Software
for Windows™
New Windows based software has been developed
for 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, enabling
the contrast of theory with practical
measurements, providing a thorough understanding
and appreciation.
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ACCESSORIES
& ANCILLARY EQUIPMENT |
CAPTURE
Essential Equipment
CAPTURE
The IFD6 Interface
Device
The interface between the Capture machine
and the user’s computer is provided
by the ARMFIELD IFD6 Interface Device.
This digitises the analogue outputs from
the equipment and tranfers the data to
the computer via the USB port, thus eliminating
any need to make hardware modifications
to the computer.
It also provides the power distribution
and control for the Capture machines.
The SWA1 Power Measurement
& Supply Unit
The SWA1 controls and measures the power
drawn from the equipment motor.
An integrating wattmeter with 0-5V dc
output. The unit also includes a Variac
to provide variable voltage output for
speed control of motors.
CAPTURE MKII
Armfield IFD7 Interface
Unit
For use with recently introduced CAPTURE
MKII Units.
The interface between the Capture MkII
units and the user’s computer is
provided by the Armfield IFD7 Interface
device. This conditions the raw data from
the sensors, digitises the data and transfers
it to the computer using the USB interface.
It also includes a sophisticated 3 phase
inverter for providing accurate motor
speed control, and a second motor drive
output, all under software control.
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tel: +44 1425 478781