A steel point or hook is attached to the bottom end of the shaft and is used to locate the water surface.
A quick-release mechanism permits large changes to be rapidly accommodated, and a screw adjustment is provided for accurate final positioning.
A push button sets the display to zero at any position, so that relative movements compared with a datum can be easily measured.
The gauging unit consists of a liquid crystal electronic display, which indicates the movements of the shaft.
This gauge is easy to use and minimises potential errors resulting from reading vernier scales.
A mounting plate is clamped to a suitable support structure and a flat vertical shaft retained by the gauging unit is free to slide up and down over the water surface.
Among three-phase power supply the synchronous machines are widely used and they called so because the speed of the rotor of these machines are the same as the rotating magnetic field. They are commonly used as generators especially for large power systems, such as turbine and hydroelectric generators in the grid power supply. Because the rotor speed is proportional to the frequency of excitation,synchronous motors can be used in situations where constant speed drive is required. Since the reactive power generated by a synchronous machine can be adjusted by controlling the magnitude of the rotor field current, unloaded synchronous machines are also often installed in power systems solely for power factor correction or for control of reactive kVA flow. Their construction is almost similar to that a three-phase induction motor except the fact that the rotor is given DC supply.
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The primary separation operation for crude oil occurs when the crude stream flows through a vessel of sufficient capacity to allow gravitational separation of the gas, liquid hydrocarbon and water phases. Gas flow passes through a secondary vertical 2-phase separator, or knock-out ports to remove any further liquids from the gas stream. Mini Plant Large Scale Three Phase Separator process trainer blends air, water and refined oil to emulate a crude oil stream. This fluid mixture then flows into a horizontal separator vessel fabricated of clear PVC. The entire trainer is controlled from a distributed control system (DCS). The separator is equipped with industry typical process instrumentation.
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The Gas Purification plant is complete with a control cabinet, integrated into the structure, with all the switches that are necessary for the activation of the different electrical components of the plant, a main switch off and emergency stop mushroom button. Inside the cabinet there are also the necessary protections against potential electrical faults, short circuits or drift to earth, according to the electrical regulations governing the protection of people and equipment. All elements of the Gas Purification plant are placed on a frame made of square pipes 40x40x2 mm of stainless steel. The four branches of the Gas Purification plant are in the same horizontal plane.
The Gas Purification plant allows testing the removal of solid particles from a gas stream, through different methods:
Dynamic settler
Static settler
Cyclonic separator,
And comparing the three processes.
The contaminant, solid, is stored in a hopper, from where it is dosed to the process by means of an archimedes screw which is directly actuated by a gear motor.
Training board-simulator is a great educational tool that allows students to learn the structure of lighting system, study its components, and perform various measurements, tests and other diagnostic procedures. Fully functional Lighting Training System installed in a mobile aluminium frame and it is based on OEM components of VW/AUDI cars.
The main characteristics and functions of the Lighting Training System trainer are:
Adjustable level with the motors of front headlights.
Possible adjustments training with the headlight tester
Open contacts for measuring of system's components and circuits.
Electric wiring diagram with built-in banana plug jumpers for measurements and connecting or disconnecting the components
The Lighting Training System has the following diagnostic and measurement features:
Electronic control unit (ECU) identification
Displaying the operating system parameters (live data)
Control unit diagnosis
Throttle adaptation
Reading/erasing fault codes
Diagnosis through OBD 16 pin diagnostic connector
Activating the actuators (depending on the control unit).
A special quick-clamping system ensures all components are securely attached. The component connections face outward to allow easy interconnection by means of quick-couplers. An oil drip tray is positioned beneath the full width of the assembly panel. The structure of the course is based on the long-established BIBB concept of training in hydraulic drive engineering. The central element of the unit is the large assembly panel. Here, two different circuits can be easily constructed using items from the kit of modern standard industrial components and connecting hoses. There is generous space for all the system components to be accommodated in drawers and cabinets. The sturdy mobile base unit houses the hydraulic unit and the electrical switch box.
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The water being the heaviest in gravity stays at the bottom whilst the oil floats on top and the gas occupies the void space in the vessel. At the secondary separating section, the fluids are allowed to slow down and separate by gravity.
A combination of refined oil, water and air enters the vessel, the flow is directed to the spherical end of the vessel where primary separation occurs and then flows through the vessel where it meets the coalescer.
Electronic drive units independently control both motors. Meters show motor electrical power consumption of each motor. A close-coupled load cell on each motor measures torque. Sensor on each motor measures speed, shown by a digital indicator. This test set has two independently-controlled, motor driven compressors, inter cooler and air receiver. It works as a single-stage, two-stage or two-stage compressor with inter cooler. The product of the torque and speed gives true shaft power. To allow students to study different types of air compressor systems, diverter valves allow air to move in different directions. All controls and instrumentation are on an easy-to-operate mimic panel. Electric motors and low-maintenance toothed belts drive two twin-cylinder, air-cooled reciprocating compressors. These include:
From the first stage to the receiver
To the second stage, by means of the integral water cooled inter cooler
Directly to the second stage
Compressors:
Twin cylinders
Maximum delivery pressure 10.3 bar
Speed range 200-1000 rev.min1
The Magnetic Pump Learning System curriculum explains the function, operation, installation, disassembly, inspection, and maintenance of a magnetic pump. The Magnetic Pump Learning System covers the magnetic pump, which uses a magnetic coupling to prevent direct contact between the motor drive shaft and the pump impeller. Additional topics include: how to properly align the magnetic coupling; how to troubleshoot problems; how to select the correct magnetic pump for an application; how to determine a pumps flow/pressure characteristics; and how each component of the pump factors into the overall operation. This feature eliminates any possibility of leakage or seepage and makes the magnetic pump an ideal selection for pumping hazardous chemicals that could harm the environment or for expensive liquids where it is important to reduce loss.
The Magnetic Pump Learning System includes a polypropylene housed, c-face mounted magnetic pump with a centrifugal impeller, a piping network, a magnetic coupling, and a relief valve. In fact, all of the included components are industrial-grade and will allow learners to gain immediate hands-on experience and practice that can apply to real-world mechanisms. The polypropylene housing is chemically resistant, which allows the magnetic pump to move fluids such as acids, alkalis, plating solutions, sterile solutions, and brine for applications in hospitals, chemical laboratories, and wineries. This commitment to providing learns with top-flight equipment is one reason why is the worlds leader in skills-based, interactive technical learning.
Features:
Magnetic Coupling Design
Mounting Compatible with Workstation
Industrial Quality Magnetic Pump.
The Multipurpose Distillation Plant can be used to perform a wide range of tests on binary, continuous or batch distillation processes. A manual of exercises completes the supply. Suitable options make it possible to process a zeotropic mixtures, to carry out the distillation under vacuum or in steam current (stripping). Of modular design, the training set is very flexible and easy to use, and can be integrated at a later stage with one or more of the many options available.
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The working principle of the apparatus is the following: an air flow generated by a centrifugal fan enters a tunnel passing through a fluid thread rectifier. As the air passes through the tunnel it undergoes a series of treatments, until it arrives in the last chamber, which represents the environment to be conditioned. The Air Conditioning Study Unit With Climatic Chamber And Air Recycle Circuit has been developed for insertion in the most advanced educational subjects. Simplicity and clearness are the fundamental requirements that permit the teacher and students to operate without having to deal first with complicated utilization procedures. Before this last stage, it may be pre-heated and moisturized by water diffusers, to experiment on heating environments and to have the opportunity to vary as many parameters as possible for a complete study on air conditioning. The flow is pre-heated, then moisturized by steam diffusers it is cooled through the evaporator and sent to the final chamber.
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The equipment consists of a ten litre reactor vessel mounted on a vacuum formed plastic base, with a liquid feed pump, air supply and instrumentation for monitoring and controlling the process.
The porous liner is removable for cleaning, and a spare liner is supplied.
Waste water is drawn from a floor-standing feed tank (not supplied) by a DC motor driven peristaltic pump. Rotational speed and thus flow rate, are accurately set by a ten-turn potentiometer. The pump delivers the feed to the reactor vessel through a transparent lid.
The cylindrical wall of the reactor is made from a porous plastic material to retain the suspended solids while allowing treated water to pass through to the outer, annular exit chamber. This design allows the essential features of the aerobic treatment process to be studied without the distractions of having to settle the solids adequately enough for external recycle - a well known laboratory problem.
Air is supplied at a measured rate by a small compressor, and discharges into the base of the reactor via a spider-arm dispenser, designed to prevent blockages as well as to produce sufficient bubbling for stirring and reaction.
Discharge is by gravity to a floor-standing product tank (not supplied).
The reactor temperature is maintained by a 3-term controller which varies power to an immersion heater within the vessel. Any temperature between ambient and +35deg C may be selected, the best conditions being a few degrees above the diurnal maximum in the user's laboratory.
The liquid level in the reactor is maintained at a constant value of 5-10 litres, by an adjustable overflow device connected to the outer annular chamber of the vessel.
The Flexural Machine For Paving Slabs And Tiles machine consists of: steel frame, one upper bearer and two lower adjustable bearers, mechanical hand-operated screw jack and a 10 KN capacity proving ring to measure the applied load.
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Double Auto Mould Auto Mould
mm/inch mm/inch mm/inch
Work table size: 455x150 /18x6 455x150/18x 6 455x150/18x6
Up/down movement of table: 100/4 63/2 1/2 100/4
Longitudinal movement of table: 50/2 25/1 50/2
Table tilt-degree 15 - 15
Feeding speed (feet per minute): 24 24 24
Moulding block speed (rpm): 4000 4000 4000
Max.moulding block width: 114/4 1/2 75/3 114/4 1/2
Moulding block diameter: 95/3 3/4 95/3 3/4 95/3 3/4
Power required hp/rpm: 3/1440 - 3/1440
These devices are connected through a network scanner module rather than the input and output modules of traditional networks. Field-device networks, such as Device Net, provide a wider range of control and can perform higher functions than traditional networks. PLC Device Net Learning System adds to Troubleshooting Learning Systems to teach operation, installation, configuration and troubleshooting of the Device Net field-device network. The PLC Device Net Learning System includes Device Net I/O application station, Device Net scanner module, software, cable assembly, jumper plugs, supplemental disk, student curriculum for both theory and lab, and teacher's assessment guide. Device Net is a high-speed, deterministic, field device network for connecting devices such as limit switches, photoelectric sensors, solenoid valves, motor starters, variable speed drives and operator interfaces to a controller. Manufacturing technicians will need to understand these networks and their operation in order to install and troubleshoot the networks as well as the network's interconnections to PLC's.
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A near-surface geothermal plant uses the thermal energy stored below the earths surface. Using a two-well system, for example, thermal energy is extracted from the near-surface groundwater for heating purposes. The scope of geothermal energy is the study and use of the heat and the temperature distribution in the ground. It demonstrates the operation of such a two-well system.
Learning objectives/experiments:
Hydraulic properties of the ground
Determination of the usable heat capacity
Fundamentals of geothermal use
Fundamentals and energy balance of a simulated heat pump
Operating behaviour of a two-well system.
The mixed vapour contains a higher concentration of the component with the lower boiling point (ethanol). It leaves the top of the column and is condensed using a condenser and a phase separation tank. Distillation is used to separate liquid mixtures made up of individual liquids that are soluble in one another. Rectification refers to distillation in a counterflow. Part of this condensate is collected in a tank as product while the rest is fed back into the column. The mixed vapour produced then moves upwards in the column. Here, on its way downwards, it undergoes further heating and material exchange with the rising mixed vapour. Ethanol/water is recommended as the liquid mixture for the. It is fed into the column. It partially evaporates on its way to the bottom of the column where it is heated to boiling. The liquid phase moves to the bottom and can be collected in two tanks. This exchange causes the vapour phase to become richer in ethanol and the liquid phase to become richer in water.
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This Flow Control Apparatus is designed to demonstrate automatic control of the ow of water delivered by a centrifugal pump. The present invention relates to a flow control apparatus for a positive-displacement pump such as rotary-vane pump, plunger pump, gear pump, and more particularly to the flow control apparatus for keeping a flow rate of fluid discharged from the pump at the high rotational speed which is lower than a flow rate of fluid discharged from the pump at the low rotational speed. The unit enables students to investigate the effects of changing the parameters of the control algorithm (proportional band, integral action and derivative time) on the control capability of the system.
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The set is supplied in plastics box. Over 20 perforated bars of different lengths and joints are used for assembly to form different linkages. The bar can accommodate a pen to trace the movement of the linkages on paper. Bar Linkages 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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The apparatus comprises of two units: the manometer and gauge assembly and the calibration of a pressure gauge assembly. During test, calibration weights are placed onto the loading platform, which is an integral part of the piston assembly. All air is expelled from the system through a purge hole in the upper part of the cylinder. The internal mechanism of the gauge is clearly visible through the transparent dial.
The apparatus has been designed to allow the suction pressure or delivery pressure of a diaphragm pump to be measured on sloping or vertical manometers and Bourdon gauges, for comparison; and to investigate the calibration and internal workings of a Bourdon gauge.
