Gears are employed as a link between driving machine and driven machine. The aim of dynamic gear analysis is an understanding of the motion sequences and the influence of inertia. They are used to vary torque and speed and to change direction.
Features:
Drive via cable drum and variable set of weights
Inductive speed sensors on all shafts
Single-Stage, two-stage or three-stage spur gear with distributed rotational inertia.
Learning Objectives And Experiments:
Determining the mass moment of inertia of the gear
Determining the friction
Determining the angular acceleration on gears
Determining the gear efficiency.
The core and the sleeve are arranged so that a uniform narrow annular gap is created between the two parts, which is filled by the liquid or gas to be analysed. The unit comprises a cylindrical, electrically heated, nickel-plated aluminium core surrounded by a nickel-plated aluminium sleeve.
The temperature on each side of the fluid is measured by thermocouples in the surface of the core and the sleeve. Both versions incorporate an insulated jacket to minimise heat exchange from and to the atmosphere. Adds an electronic proportioning valve and flow meter to vary and measure the flow using.
Measurement of the temperature difference between the heated and cooled surfaces together with the power supplied to the heater (measurement of DC voltage and current) using allows the conductivity of the fluid to be calculated. The fluid to be tested is injected into the annular gap between the heated core and the cooled jacket using a hypodermic syringe. The surface area and thickness of the fluid sample remain constant during all tests.
Features:
Concentricity of the heated and cooled surfaces is accurately maintained using a spiral insulator
Thickness of the fluid sample is restricted to 0.5mm to minimise convection in the fluid sample
ArmSoft software is supplied, with separate exercises for determining the thermal conductivity of liquids and gases
Trapped bubbles of the previous liquid or gas sample are prevented by the spiral flow path when injecting a different liquid or gas.
The Alternator Synchronous Motor Learning System includes capacitive load, combination synchronous motor alternator, and synchronizing lights switch unit. The capacitive load unit combines with the Alternator Synchronous Motor Learning System to provide operation under various types of loads. Alternator Synchronous Motor Learning System adds to the Electric Machines Learning System to teach alternators and synchronous motors commonly found in industrial applications. Alternators provide a mobile source of AC electrical power while synchronous motors reduce power costs by correcting the overall power factor in a plant. The curriculum covers major topical areas such as alternator output voltage and frequency, three dark synchronization method, and reversing a synchronous motor. This system also offers curriculum in an optional, highly interactive multimedia format. Learners study industry-relevant skills including how to operate, install, and analyze the performance of alternators and synchronous motors. In addition to industrial components, includes in-depth curriculum, instructor guide, and student reference guide.
Features:
Capacitive load unit ranging from 1 micro-Farad to 20 micro-Farad
Multimedia Curriculum Available Requirements
Three phase power
Basic Electrical Machines Learning System
Synchronous 1/3 HP motor-alternator
Synchronizing switch/lights combination unit
Oscilloscope.
With the Injection Control System simulator it is possible to study the control (diesel engine management) and the diesel engines direct injection.
The Injection Control System simulator covers the following topics:
Heavy vehicle exhaust gas analysis and emission control
Heavy vehicle turbo chargers and blowers
Heavy vehicle cold start systems
Heavy vehicle wiring diagram
Heavy vehicle electronic fuel injection systems
Heavy vehicle sensors
Fuel tank with pre filter
High pressure electro pump
Heavy vehicle Electronics Control Module (ECM)
12 V circuits
Electronic control of vehicle performance and speed
Engine protection
Accelerator pedal position sensor
Over supply pressure sensor
Flow limiter
Engine rpm sensor
Air temperature sensor, engine temperature sensor, air mass sensor.
Electronic control board for the management of the whole plant.
Compressed air is often used instead of electrical energy, particularly in workplaces where there is a risk of explosion of combustible gases. The heat generated by compression is dissipated by cooling fins. Compressors are at the core of compressed air generator plants. These plants are used where compressed air is used as a source of energy. The compressor is driven by a V-belt. This enables references to be made between individual components and the Large-format drawings suitable for workshop practice can be attached to the display board at the rear of the trolley. A second fully functional compressor, permanently mounted to the workbench, can be used for demonstration purposes. A disassembled piston compressor is contained in the drawers of the trolley cabinet which also holds the tools and assembly aids, small parts and gaskets required for assembly.
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Bench-top unit.
Main metallic elements of stainless steel.
Diagram in the front panel with distribution of the elements similar to the real one.
Anodized aluminum structure and panels of painted steel.
Compressor:
Power: 1/2 CV.
Hermetic compressor computer controlled.
Condenser:
Totally hermetic by viton joints.
Vertical transparent cylinder, through which the coil of heat exchange can be seen.
It has a copper coil through which circulates cooling water inside.
Diameter of coil: 1/4.
Heat transfer area: 0.032 m² approx.
9 nickel-plated copper spires.
Expansion:
Sight glass placed between the expansion valve and the evaporator, to show the formation of vapour bubbles after the expansion valve.
Expansion valve, float type, that is assembled on the condenser.
Horizontal air duct with 450 mm x 450 mm window.
Axial fan with digital speed control 0 to 4 meters per second.
2x digital thermohygrometers with digital displays.
4x aluminium drying trays 400 mm x 300 mm.
Electrical heating element array 2,700 watts.
Distillation column height 600 mm with 7 sieve trays.
Electronic balance with range 0 to 10 Kgs and 0.1 g resolution.
Digital anemometer with digital display.
Digital chronometer.
Emergency stop button
Electrical control panel in main cabinet.
The unit allows the study of this cycle and particularly the influence of the temperature of the body to be cooled. Moreover it is possible to evaluate the cycle performances, hence the heat exchange when the body temperature changes. The Computerized Low Temperature Refrigeration Study Unit is an extremely easy-to use and functional unit able to permit the study of a low temperature refrigerating cycle through a simple compression refrigerating cycle. 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. 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 a manual which describes the components, the installation and utilization procedures as well as many exercises with experimental results.
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Modular structure, hanging box is easy for doing different experiment, easy to organize various training project, expand and upgrade are convenient.
Main Functions:
It has a safety protection function.
It can finish PLC commonly used programming instructions learning and training, PLC control car linear motion project training, PLC typical application project training, PLC control three-phase asynchronous motor running project training.
High Performance Ultrasonic Tester is an instrument using the most modern technologies, it has a 14 VGA colour touch screen, 64 MB, Compact Flash interface, SD card, USB working system Windows CE with the possibility to manage, EXCEL, WORD, PPT files etc. Ultrasonic pulse velocity tester high performance with microprocessor for combined ultrasonic and rebound hammer data acquisition and processing.
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Features:
Folding with a Max. Angle of 90 degree
Adjustable Rear Stop
Ideal Combination of Shearing, Brake & Rolling
Roll Bending Starting with Diameter 39mm.
The changes of the resistance are particularly significant on the palm of the hands and on the plant of the feet. Such resistance decreases during periods of emotional stress. Moreover, the surface of the skin shows an electrical potential, that can reach up to 50mV and that can equally be influenced by emotional states. At the passage of an electrical current, the skin shows a resistance that is normally within the 100 kOhm to 1 MOhm range.
Circuit blocks:
Typical circuit that is used in the monitoring of the Galvanic Skin Resistance
Variation of the resistance in direct current of the skin with relation to humidity
Recording of the changes of the Galvanic Resistance of the skin due to emotional or physical stimuli.
Stepping motor, 200 step/rev, max torque = 60 N· cm
No. 2 limit micro switches
Graduated disc, 0 360
Encoder (200 pulse/rev)
Gear motor 90/1 rev.
Electric supply box consisting of:
a) Ammeter for measuring the motor absorbing current
b) Diagram on front panel showing the circuit working
c) Bushings for measuring relevant signals
d) Piloting card for stepping motor with USB interface
Circuit for undersaturated solution with tank, 2 heat exchangers for heating and pump
Measurement and control of temperatures in stirred tank, tank for undersaturated solution and in crystallisation cell.
Bypass for oversaturated solution with crystallisation cell and 2 heat exchangers for cooling
Crystallisation from solutions in fluidised bed
Heating circuit with pump, tank, heater and thermostat
Stirred tank for preparation of a saturated solution
Removable and fillable crystallisation cell, pmma
Adjustment of flow rate in bypass using valves.
Unit mounted on an anodized aluminum structure with panels made of painted steel.
Motor:
Speed range: 0-600 rpm.
A transparent protective cover, made of plastic, provides protection against the rotating parts and enables different experiments to be observed.
Five different path radii: 25mm, 50mm, 75mm, 100mm, 125mm.
Four different rotating weights (made of stainless steel) of 55g., 80g., 105g. and 130g.
The motor speed is controlled through the electronic console and the value of the speed is visualized in the digital display
Force sensor, range: 0-25N, resolution: 0.1N.
This piston also has an in-built pressure relief valve. The oil from the relief valve returns to the pump reservoir connection by means of flexible pipe. The first piston is located axially; it extends beyond the end of the tube and is drilled to suit a pressure gauge and a high pressure flexible rubber hose connecting the hand operated pressure pump to the unit.
The thin cylinder unit and hand operated pump are mounted on a bench-top base plate.
A thin wall tube contains two pistons.
The cylinder unit which is resting on the four pins is supported on a frame and located axially by a fixed stop and an adjustable stop.
The second piston is free to move axially within the tube, but its travel out wards is limited by a plate and end-cap.
Maximum test pressure: 40 bar.
Technical data about the thin cylinder unit:
Reservoir Capacity: 75 cm3
Pre-set relief valve setting: 450psi approx.
Cylinder material: Aluminium alloy.
Recommended oil: Castor oil
Gauge Factor: 2.0
Pressure gauge (Manometer): 0-50 bar.
Strain gauges: Foil type.
A 16 channels computer interface unit and software are provided. Dial Indicator is replaced by Digital Indicator with output. The Deflection Of Curved Bars Computer Interface set has the same accessories.
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The three Spur Gear Lifting Machine supplied include a driver having 40 teeth, a driven wheel with 120 teeth and an intermediate gear of 40/120 teeth compound. The pulleys mounted to some of the gears can be used for either single or double purchase experiments. A vertical stand incorporates a back plate which carries a number of spur gears on shafts to enable single, double or three stage gear trains to be assembled.
The driver and driven wheels have integral pulleys around which cords are wrapped to act as 'EFFORT' and 'LOAD'. The lifting machine can be set-up as a two gear or three gear train. Cords, hangers and a set of weights are included to provide drive to the gear trains and to determine ratios, mechanical advantage and efficiency.
A Computerised Air Conditioning Cycle Training Bench for studying the thermodynamic properties of air as it passes through the various sections of an air conditioning system.
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