Full-Scale Sewerage System Teaching Aid
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Corrosion damage to metallic components causes considerable economic and technical damages. The issue of corrosion and corrosion protection therefore plays an important role in technical training.
Features:
Electrochemical corrosion (local elements)
Corrosion protection with external voltage and sacrificial anodes
Principles of corrosion and corrosion protection on metallic materials
Oxygen corrosion
Learning Objectives And Experiments:
Corrosion behaviour of different metallic materials (rust / passivation)
Oxygen corrosion
Corrosion protection
External voltage
Formation of local elements
Influence of pH value of the electrolyte solution
Influence of salt concentration in the electrolyte solution
Sacrificial anodes
Protective layers.
Laminar And Viscous Flow Heat Transfer Unit is allowed to take place between oil and water in a concentric tube. The oil is raised to a maximum temperature of 90°C in a tank fitted with an electric heating element. Control is by a panel mounted digital PID controller and the maximum temperature is limited by a separate thermostat for operator safety. Oil flowing in the inner tube is supplied by an international oil company and has a kinematic viscosity at 70°C, of 8x10-6 m2 s-1. As it flows downwards, the oil is cooled as heat is transferred to the flow of cooling water which surrounds the core tube. The heated oil is pumped from the tank into the core tube of the diagonally mounted concentric tube heat exchanger.
Experimental Capabilities:
Determination of surface heat transfer coefficients on both the oil and water sides and of the overall heat transfer coefficient.
Demonstration of a simple concentric tube heat exchanger with con-current and counter-current flow.
Simple energy balance for a heat exchanger.
Included accessories:
Pitot tube and level meter.
Thin edged wall weir without contraction.
Four-column pressure gauge.
Radial gate.
Vertical gate.
The equipment is self-contained and may be bench-mounted in either the classroom or laboratory by virtue of its portability.
A model undershot weir and bridge pier are included for local erosion demonstrations.
A transparent, inclinable flow channel through which water can be re-circulated by a pump over a mobile bed to demonstrate the whole range of bedforms from incipient particle movement to bed wash-out.
The working section of the channel is 1.55m long, 78mm wide and 110mm deep.
A water level gauge is supplied to calibrate the overshot weir.
Three different discharge rates can be selected (and measured) within the range 0.2 to 0.6 litres/sec.
The channel slope can be adjusted within the range 0-10%.
Description:
The unit consists of an inclinable channel mounted on a frame, together with a discharge tank and recirculating pump. The channel slope is adjusted by means of a fine screw jack to which an accurate slope indicator is attached. To commence a demonstration, sand is placed evenly along the channel bed, between the inlet tank and the overfall discharge weir. The channel sides are transparent in order that bed profile changes can be observed, and a section of one side is provided with graphical grid markings to permit quantitative assessments to be made of bedform dynamics. Water is circulated around the system at one of the three selectable flow rates.
The DC motor speed controller is built with a single phase semi-controlled thyristor bridge suitable for the control of the speed of independently excited DC motors by regulating the conduction period in open and closed loop. The DC motors are used in a wide variety of industrial drives, such as robots, machine tools, oil drilling rigs, mining, automotive systems, etc. The controller consists of three control loops: speed, current and armature voltage. Their speed can be easily adjusted in very fine increments ranging from standstill to rated speed and even above and their construction is made rather complex than their AC counterparts by the fact that they need acommutator, which reverses the direction of current and fluxes to produce a net torque.
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In Gas Absorption Trainer With DCS Control trainer, an air CO2 mixture emulates the raw gas stream and CO2, the acid gas. The amine is regenerated and recycled through the process. The Gas Absorption Trainer With DCS Control is equipped with industry typical process measurement and control devices, providing a realistic training environment in which the students are exposed to many available technologies. The separation of gas mixtures and recovery of the components usually involves a regenerable absorbent. In the natural gas processing industry sulfur compounds and CO2 are removed by absorption by an aqueous amine solution. The trainer is controlled from a distributed control system.
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This experimental unit forms part of a series of teaching systems developed in collaboration with the Department of Automation and Information Technology at the Harz University of Applied Studies and Research. A rotary encoder determines the position of the vehicle from the rotation of its wheels. This in turn activates an actuator, the drive motor on the vehicle. A vehicle with an inverted rod pendulum acts as a mechanical multi-variable system. A fuzzy control moves the rod pendulum to the centre position, where it is held in position, and at the same time controls the position of the vehicle. A joystick can be used to control the system manually. This allows the degree of difficulty of the control process to be estimated very accurately. The control process is made more difficult by the fact that the vehicle can only move to a limited extent from its original position.
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An exhaust gas calorimeter for use with Regenerative Engine Test Set. The engines are separately available. The equipment measures the heat content of exhaust gases and enables students to determine the energy lost to exhaust in the energy balance for single-cylinder, four-stroke petrol and diesel engines.
The main components of the Exhaust Gas Calorimeter are:
Control valve
Gas-to-water shell and multi-tube heat exchanger
Instrumentation unit the heat exchanger is mounted on asxturdy base plate. A hand-operatedvalve, which mounts on the control console of the test set, controls the flow of cooling water through the heat-exchanger jacket. Exhaust gases from the test engine mounted on the test set flow through the tubes. A jacket of constantly flowing cooling water surrounds the tubes, and the heat content of the gases is assessed by measuring the cooling water flow rate and the inlet and outlet temperatures. A turbine flow meter measures the flow rate. For safety, the heat exchanger also includes a pressure are lief valve in case insufficient cooling water is flowing. Thermocouples measure the temperature of gas and water at the inlet and outlet.
Mechanical Systems 2 Learning System teaches vital industrial skills including how to design, install, operate, and analyze basic mechanical transmission systems using components like chains, v-belts, spur gears, bearings, shafts, and couplings. Mechanical Systems 2 Learning System teaches the fundamentals of mechanical transmission systems used in areas such as industrial, agricultural, and mobile applications. Common real-world applications of mechanical transmission systems include drive shafts on cars and air compressors.
The Mechanical Systems 2 Learning System features a variety of real-world mechanical components such as a 1/3 Hp constant speed motor, v-belt, roller chain, and a digital tachometer. In addition to hands-on skill building, learners study the mathematical theory behind mechanical applications such as calculating mechanical power, mechanical efficiency, and the shaft speed and torque of a belt drive system. Learners use these components to practice hands-on skills such as mounting a motor to a work surface, assembling a v-belt and roller chain drive systems, and measuring motor speed.
Features:
Rigid Work Surface for Precision Alignment
Interactive Multimedia
Prony Brake for Testing Load
Mechanical Guard Assembly.
This trainer contains advanced networking arrangement, distributed control section and process controlling system. It can efficiently regulate hydraulic or pneumatic cylinder. Programmable Logic Controller Trainer PLC has extensive application in automobile, refrigeration, steel manufacturing, textile machine production and glass industries. It is offered as per customers preference on expansion module and PLC type. PC based operation has contributed to its user friendly design. Designed by skilled technocrats, this trainer PLC serves as the reliable option to comprehend complex theories of programmable logic controller. On board IR switches is one of its main factors. We are a prestigious manufacturer and exporter of excellent grade Programmable Logic Controller Trainer PLC. We are a distinguished supplier and manufacturer of Programmable Logic Controller Trainer PLC.
Features:
Advanced design
Convenient to maintain
Easy to understand mechanism
Simple to handle.
Testing And Failure Simulation Set for a three-phase motor used in cooling and climate control units.
Portable electric panel consisting of
1. Front Panel, side A
3 ammeters for the measurement of phase currents absorbed
Voltmeter for the measurement of mains voltage
Motor protection switch with adjustable trip level.
Mains voltage telltale.
Black power supply bushings for motor tested
Yellow/green ground bushing.
2. Front Panel, side B
Voltage at ends of motor windings telltales
Telltale used as a probe to verify presence of voltage at bushings
Black power supply bushings for motor outside the control panel
3. Back Panel
Connector for connection to motor - external compressor assembly.
Power cable inlet complete with EC plug
4. External assembly consisting of:
Pressure gauge
380V 50Hz 1HP 4-pole asynchronous three-phase motor coupled to type 0VT-12 open compressor.
Equilibrated soil samples placed on the sand are then subjected to a known variable suction range of 0- 800mm of water. These equipment consists of a free-standing circular tank filled with saturated sand (not supplied). The suction is applied by means of a buried porous pipe and an associated sliding control chamber. In order to maintain the suction an uninterrupted low volume water supply is required.
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For hydraulic tracer and visualization studies, an accurate dye injection system is provided. A known volume of dye solution is injected just before the entry to the settling tank.
Water is taken from the laboratory mains supply and is fed to the settling tank via a flow meter. For studies of sedimentation, a slurry is prepared in a sump tank and pumped via a specially designed flow meter to join the fresh water stream just before entry to the settling tank.
This may be comparatively analyzed by the Imhoff cone technique or more accurately by drying and weighing.The sump tank is continually agitated by a flow sparge device to prevent settling of solids during an experiment. A well-mixed slurry of known concentration and flow enters the tank uniformly under an inlet weir.
In conjunction with the test stand, which includes a drive and brake unit, the four-stroke petrol engine is highly suitable for use in teaching the fundamentals of engine functioning and measurement. It is part of a series of devices enabling experiments to be performed on engines and machines.
Learning Objectives/Experiments:
Determination of the frictional power of the engine
Plotting of torque and power curves
Determination of volumetric efficiency and lambda (fuel-air ratio)
Determination of specific fuel consumption.
The product is designed to accumulate all height measurements without surface treatments, special holding jigs or other accessories. All height measurements are accomplished by a high precision LVDT. The height measurements of the sample are taken and averaged over a range of specified temperatures. CTE values are automatically calculated and displayed when the test cycle is completed. An advanced and automatic method and device for measuring the Coefficient Of Thermal Expansion Of Concrete cores. The product is completely self-contained and operates with easy to understand graphical interface software. All functions are completely automatic, including accurate controls for heating, cooling and height measurements.
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Precision Welding:
The movable jaws run on precision ball typeguides which reduce friction to almost nothing and ensure utmost welding accuracy. Minute precision control is ensured by theuse of latest control devices.
Operation:
All the parts have been duly dimensioned; clearlyarranged simple levers ensure easy operation even for unskilled workers. Sturdy in construction, Butt Welder is sodesigned as to facilitate reliable and easy operation even by unskilledpersonnel. Clamping arrangements are by quick action clamps and the alignment is automaticand perfect which is so essential in modern production methods. It is most suitable for industrial conditions and will give a longlasting dependable service.
The PLC Troubleshooting Learning System includes Control Logix processor, I/O rack, (32) 24VDC outputs, (32) 24VDC inputs, power supply, cable set, and integration in the Learning System. The PLC Troubleshooting Learning System Control Logix PLC System adds to the Programmable Controller Learning System to provide model Control Logix PLC application study.
Features:
Provides model Control Logix PLC application study
Strong hands-on skills and curriculum
Adds to the Programmable Controller Learning System
Student Reference Guide
Multimedia Curriculum Available.
Shell & tube heat exchanger for studying the convective heat transfer between steam andwater in counter flow
Safety valvein the hot water tank for safe operation
Measurement of temperatures, pressures, flow rate and condensate volume
Steam volumecontrolled by thermostatic valve
Precise determination of the steam volume by measuring the condensate volume
Additionalmanual valve for the introduction of heating steam into the shell & tubeheat exchanger
Features:
Thermostatics team regulation
Convectiveheat transfer between steam and water
