Safety glasses and glows
Digital voltmeter
PC interface for the measurement and data storage
Digital ammeter on console
Digital voltmeter on console
Zn reference cell
Copper electrode
Carbon steel electrode
Cu/CuSO4 reference cell
Ag/AgCl reference cell
Transparent basin to build the electrolytic test bath
Simple circuit with sliding variable resistor and lamp suitable for inserting into the electrical circuit of the electrolytic cell
Zinc electrode
Aluminum electrode
Magnesium electrode
DC feeder (with constant voltage, constant current, constant potential facilities)
Ti-Pt anode
MMO tubular anode
Fe bar
Cu bar
Fe-Ni bar
Waterproof resistor with thermostatic device
Resistivity fluid cell
Air pump with relevant sprayer
Carbon steel electrode (partially coated with epoxy compound)
Carbon steel electrode (completely coated with epoxy compound)
Various reagents supplied in plastic cans with safety technical data sheets
Set of ancillaries and connecting leads
Set of spare fuses.
The Computerized Refrigeration Study Unit With Mass Energy Balance is an extremely easy-to-use and functional unit able to permit the study of a compression frigorific cycle and the evaluation of the cycle efficiency and the energy balance at the evaporator and at the condenser. A front panel with mimic diagram and instrumentation allows to keep the most significant thermodynamic quantities under control, so facilitating the students understanding and the teachers task. The unit is supplied with manuals which describe the components, the installation and utilization procedures as well as many exercises with experimental results. Moreover, the transducers and the dedicated software allows the data acquisition of the main thermodynamic quantities and to obtain or as a table or as a graph, the acquired values and the thermodynamic calculated quantities. The unit allow the study of the main thermodynamics quantities as a function of the thermal load at the evaporator and the calculation of the power required at the compressor shaft.
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A suspension strut with a progressive spring has been used. Blowing or discharge of nitrogen into/out of thecompensation container changes the attenuation. In two-wheel vehicles, single-tube shock absorbers arefrequently used.
The following can be shown:
Compression by pressing on the suspension strut
Movement of the cutaway work piston with finned valves forthe pusher and tractor phase
Device to change the spring hardness by turning the steppedsleeve on the bottom of the suspension strut of adjusting nut
In the cutaway compensation container, the cutaway dividingpiston (rubber membrane), in which the gas cushion can be found, can be seen.
Features:
The electrician is adopted a mash plate structure. Suitable subjects: electrician training, electrical training, electrical control technology, electric drive control circuit and skills training, electronic training and related experimental and educational subjects.
It consists of a metal box with handles 200x200 mm by height 400 mm, painted for rust protection. To measure the consistency of fresh concrete.
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Features:
High Strength Steel Roll
Quick release top roller
Asymmetrical Roll Bending Machine
Fixed Top Roller, Adjustable Lower and Rear Roller
Standard Series Wire Core Groove.
During the cardiac relaxation period (diastolic period) the pressure decreases, the density increases and the physical dimension of the tips of the fingers decreases. At every heartbeat the arterial blood pressure raises (systolic period) and the dimension of the tips of the fingers slightly increases, while the higher oxygenation causes the decrease of the optical density of the skin tissue. Since these cyclical variations follow the cardiac rhythm, they can be used to measure the frequency of the peripheral pulsations.
Circuit blocks of Pulse Rate
Effects of the temperature on the measurement of the frequency of the pulsations
Recordings of the peripheral pulsations in a finger
Effects of breathing and exercising on the frequency of the pulsations.
Theoretical topics:
Measurement of the cardiac frequency
The use of optical sensors
Comparator with hysteresis for the processing of the signal provided by the optical sensor
Concept of cardiac rhythm and typical values, in different subjects and in different conditions of the subject.
The experiment module may be used both to heat rooms and to absorb ambient heat from the outside air. It can thus be operated as either a heat sink or a heat source for a heat pump. Experiment module consisting of a fan convector with piping, quick-release couplings and temperature sensors. This advantage makes it possible to operate room heating with lower temperatures in the heating circuit. In the case of heating rooms, compared to traditional heating radiators, fan heaters offer the possibility of achieving a comparatively good transfer of heat to the room air, even at small dimensions. When combined with a heat pump, the fan heater therefore often represents a beneficial application both economically and in terms of energy, especially when renovating heating systems in old buildings.
The disadvantage of the energy balance, particularly unfavourable in winter, in this case is contrasted with the advantage of lower initial investment costs. When absorbing ambient heat to supply heat to a heat pump, air heat exchangers are often used when there is no access or difficulty accessing other heat sources such as groundwater or geothermal heat collectors.
Flow Control And Regulation Study Unit makes it possible to analyze the behaviour of a control loop where the controlled quantity is the flow rate of a liquid in a circuit. Students can examine the effects of the different control parameters on the performance of the control chain and on the stability of the system; furthermore, they can become familiar with the components commonly adopted in modern industrial applications, as the system is entirely made of industrial quality components. The unit can be had in two versions, where the control element consists of a pneumatic valve or a motorised electric valve. Compared to other quantities such as the level or the temperature the flow rate varies as a function of the regulating signal ina very quick way. This makes the problem of choosing the most suitable control technique very interesting.
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Safety adsorber for closed water circuit
Continuous process
2 adsorbers with activated carbon filling
Water temperature control
Digital temperature indication
Adsorber with 8 sampling points
Metering pump for concentrated adsorbate solution
Change of adsorbate concentration and contact time
Pump for recirculating the treated water
Flow rate adjustable.
Again these all take place with the repeatability advantages that electronic and software control brings. The addition of the process vessel allows more complex process control problems to be addressed, including remote set point demonstrations.
Single loops in combination:
Temperature control of reactor contents by varying heating fluid flow rate
Temperature control of heating fluid by varying heater power
Conductivity control of reactor contents by varying flow rate of one component.
The kit is supplied in plastics box. The kit includes belt and chain power transmission systems. Weights and load hangers are used for determination of mechanical advantage and efficiency. Belt And Chain Set is part of mechanical Engineering Test Series which provides sets for various experiments on Basic Panel (separately supplied) to study or demonstrate specific engineering principles.
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Using this unit photoelastic experiments and practices of transparent test specimens (models) may be performed.
Unit for photoelasticity practices, illustrating the subjects of the Photoelasticity theory, the Elasticity theory, Strength of Materials, and Structure theory.
The different test specimens are subjected to loading by external forces and have poralised light shone through them.
A load application element can apply tensile, bending, compressive, and distributed and punctual loads to the specimen.
It is very suitable for the introduction and study of photoelasticity: optical elements, isochromatic, isoclinic, band order, band factor, edge tensionsing, etc.
The stresses and strains occurring in the test specimen are represented as bright spots or figures of different colours, and we can visualise the distribution of stress.
Experiments:
The pressure profile in convergent/divergent nozzles at various pressure ratios
Investigation of expansion with friction in a parallel passage at high subsonic velocities
The phenomenon of choked flow corresponding to sonic velocity at a nozzle throat
The relationship between pressure ratio and flow for convergent and convergent/divergent Laval nozzles
Boundary layer growth under subsonic and supersonic conditions.
Shear Center is to be used with Universal Base Frame or Universal Structural Frame. Interchangeable beam specimens are made from 1.2 mm steel sheet or approximate equal with welded-on end plates and a central loading plate which has a provision at the bottom for loading at different eccentricities from the beam axis. A load is hung at the bottom of the central loading plate and two dial indicators are used to measure deflections of both ends of the plate. The Shear Center equipment is used for studying the plane of traverse loading without twisting for selected standard sections. The end plates are attached to two flanged supports. The plane of zero twist is the plane of shear center.
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Wrapped around the circumference of each step of the shaft is cord. At the ends of each cord is a single adjustable bob. The stepped shaft is secured to a main shaft, which itself is secured within a bracket. The bracket can be bench or wall mounted. Alternatively the starting position of each bob can be made different. The adjustment of the bobs can be made to ensure that the starting positions of each bob is the same even though the steps are different diameters.
Experimental Capabilities:
Compare actual results with theory
To find the relationship between angular rotation and the peripheral movement of the stepped shaft.
A bench-top unit for simulating the control systems installed in a building and studying the control and management of the various systems installed in a large industrial / commercial building.
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The apparatus consists of a shallow water tight rectangular tank, approximately 2000 mm by 750 mm by 250 mm deep, which can be filled with a fine granular medium to form the experimental terrain. Valves control the number of spray nozzles in operation, enabling a moving storm to be simulated. Profile gauges and impermeable elements are supplied to allow the easy construction of sheet piling, walls, structures, foundations, reservoirs, bridge pier and dams, etc. Above the tank is a frame supporting an array of eight spray nozzles which are used to simulate rainfall. Washed silica sand graded 0.2 mm to 1.0 mm should be used as the permeable medium which must either be ordered separately from or supplied by the end user. Coarser material may be used. The tank is supported on a fabricated steel frame with mountings which allow adjustment of the inclination of the tank.
Experimental Capability:
Study of ground water abstraction through one or two wells
Simulated effects of civil constructions such as bridges and dams
Study of basin hydrological cycles
Permeability analysis
Study of flood and runoff hydrographs
Effects of surface storage on hydraulics
Fluvial process studies including:
Erosion by water on hillsides
Erosion in meandering rivers
Sediment transportation.
The apparatus is shown mounted on the working surface of the basic Air Flow Bench and connected to the blown experiment duct of the fan by a re-enforced plastic hose. The equipment consists of a plenum chamber with outlet tube and a calibrated stand to mount the pitot tube which can then be traversed along the axis of the air flow at various heights. The pitot tube is connected to the larger of the two sloping manometers which is leveled and zeroed before starting the experiments.
Although used with the basic Air Flow Bench the apparatus can be operated as a standalone unit if supplied with an air flow of approximately 500 litres/second at a pressure of 600 Pascals.
Introduction:
The student can then study air jet velocity in order to determine both velocity and momentum profiles of the air jet at various distances from the emission point.
Turbulent Jet Studies apparatus is designed to demonstrate the general behaviour of a jet of air emitted from a circular pipe into free surroundings.
The trainer features a fully functioning Automatic Transaxle Trainer that can be manually shifted through all foreword and reverse gears. It features the popular Automatic Transaxle found on most chrysler front wheel drive cars. The Automatic Transaxle Trainer is designed to assist in educating the fundamentals of a front drive transaxle. The package includes a complete compentency based training program which instructs the student from basic operation and adjustment to complete overhaul of the transmission.
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