The Vacuum And Recharge Station unit allows the assembling and disassembly of refrigeration and air conditioning plants and the filling and drainingoperations of the refrigerating fluid.
Vacuum and Recharge Station Composed of:
Portable recharge station with trolley-mounted frame, fitted with two-stage pump 120W for high vacuum, graduated charging cylinder
The two-stage pump used is fitted with a ballast valve and anti-air return valve
a.Flow rate: 3.6 m3/h
b.Cylinder capacity: 1.1 kg, capacity more than enough for filling of our educational equipment
c. Dimensions: 450 x 280 x 550 h mm
Ratchet wrench for refrigeration
Multigas electronic leak detector able to rapidly locate gas leaks.
Adjustable wrench max. Opening 30 mm
Cylinder connector.
Engaging the starter pinion can be demonstrated.
The function of the planetary gearing is easy to identify.
Parts cut in this model:
Armature can be rotated and solenoid switch actuated.
Solenoid switch
Housing and windings.
The experimental device absorbs the advantages of domestic and foreign advanced teaching equipment. It uses hanging box. All experimental instruments have the digital display. All the power and instruments used in the experiments have reliable protection. At the same time it set up a reliable safety protection system. Its superior performance is the best choice of the major colleges laboratory construction. It takes full account of the laboratory's current status and future trends and makes the innovation in performance and structure.
Applications:
It is applicable to major colleges experiment teaching like electrician basis, electrical engineering, mode voltage, motor learning, digital circuit, motor and power drag, motor control, relay contactor control. Also the programmable controller experiment, the motor inverter control experiment and so on can be expanded.
Fully automatic procedure with quick and accurate test results (max. errors within 5 kg./cubicmetre). Ram Rapid Analysis Machine Used for the determination of cement content in fresh concrete, coarse and fine aggregate, fly ash and GGBF slag content can also be determined. The complete test takes approx. 10 minutes. The connection to water net for approx. 80 liters each test is required.
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mm/inch
Table size: 455x 150/18x6
Max.height of workpiece on table: 254/10
Max.height of door or frame: 1000/39
Max.depth of cut-chain mortiser: 140/51/2
Max.depth of cut-chisel mortiser: 90/31/2
Longitudinal movement of head/table: 305/12
Table tilt-degree: 45
Size of dust collection port-dia: 100/4
Air pressure required (kg/cm2): 5 to 7
Electric motor (hp/rpm): 2/1440
The system's highly-interactive multimedia curriculum takes the learner through 14 modules covering 89 skills that provides an unmatched breadth and depth of knowledge and skill building only can provide this level of training using a compact, portable workstation. Learners use the powerful plus terminal, and networks throughout the curriculum to build basic skills, such as program editing, to more advanced skills, such as analog output scaling. Portable PLC Learning System is a portable solution for when there is a need to teach PLCs where there is limited space such as in a conference room, lab area, or even a shop floor desk Its compact size and durable case also provide for safe storage when your limited space must be used for teaching other subjects or when the system must be transported to a different location in the facility for use.
Features:
Highly-interactive multimedia curriculum takes the learner through 14 modules covering 89 skills that provides an unmatched breadth and depth of knowledge and skill building.
A portable solution for when there is a need to teach PLCs where there is limited space such as in a conference room, lab area, or even a shop floor desk.
Enhances learning through a wide array of real world applications that allows learners to actually see their programs control real systems.
Electrolytically generated hydrogen bubbles rise with the flow, flow around the model and visualise the flow. Different models are available: drag bodies (e.g. aerofoils and cylinders) or changes in cross-sections. Fine gas bubbles are perfectly suited to visualising flow fields. Due to analogies, many flow processes that occur in air can also be demonstrated by experiments in water. Water flows from bottom to top through the experimental section. The trainer consists of a vertical experimental section in which an interchangeable model is inserted.
Learning Objectives And Experiments:
Vortex formation, demonstration of Karman vortices
Qualitative observation of the velocity distribution in laminar flow
Visualisation of two-dimensional flows
Flow separation
Analogy to air flow
Streamline course in flow around and through models.
Industrial type components are educationallyadapted by using a modular panel system to permit the step by step assemblingfrom the simplest circuit to the most complex system. This laboratory is designed for the study of the temperaturecontrol application to allow the student a practical training, based on theperformance of guided experiments.
With this laboratory it is possible to perform the followingexperiments:
The two position controller with delayed feedback in thetemperature process
The two position controller with elastic feedback in thetemperature process
The two position controller in the temperature process
P, PI and PID controls of the temperature process using theCHR method
The three range controller in the temperature process.
Laminar flow reactor for connection to supply unit
Transparent double jacket from pmma for cooling and heating with
Sensor for measuring the conductivity and temperature via
Air vessel for damping of pulsation
Straight glass tube with laminar flow
Temperature control in the reactor via
T-piece with nozzle for mixing the reactants
Special inlet for reducing the inlet length.
This Level Control System is designed to allow numerous level control experiments to be performed within a typical laboratory session. This invention relates to an improved type of electronic liquid level control apparatus, yand more particularly toa relatively. A simple electronic type 'of controller which may be utilized to maintain substantially accurate liquid levels, within small liquid receiving chambers. A for use with very small liquid receiving chambers, such as -may be used 'in laboratory apparatus or pilot plants, or they are not adapted for use with extremely high pressure'equipment because of yinadequate packing glands or sealing means. Still other types of liquid level 'controllers are adapted to operate overa relatively wide range of level variations and are not sensitive to small changes ,in liquid' level. The unit enables students to investigate the effects of changing the parameters of the control algorithm and changes can be made to the process conditions by adjustment of the ow into the vessel. Many of the present-forms of liquid level ycontrollers are of a type which are not suitable.
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Torsional Oscillations Apparatus mechanism demonstrates torsional oscillations of single or multi-rotor and or geared systems with low natural frequencies.
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Bench-top unit mounted on a structure of anodized aluminum, with painted steel panel, and with regulable in heigh legs.
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The apparatus consists of two rafter struts and a restraining tie mounted on a self contained, bench top base.
Evaluation of co-planar forces in the struts and tie of a basic roof truss
Effect of changing tie bar length
Loading at the hinged apex by load hanger
The tie length, and hence angle of truss, variable
Both struts and tie incorporate linear, direct reading spring balances to measure forces
An instruction manual for student and lecturer provided
Struts and tie re-adjustable to original lengths
Set of weights.
The use of contrasting colors according to a pre-established code simplifies the informative process as well as the learning one. The set includes some of the most important components used in pneumatic plants for gas compression (compressors and valves of different type). Special explanatory technical plates show each sectioned component explaining its operation with notes, drawings and technical data. In sectionizing each component the best care has been taken to evidence all the interesting constructive detailed features.
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Experiments:
Verification of the bending equation
Deflection of beams on two simple supports with point loads
Reciprocal properties for loads and deflection
Determination of flexural rigidity and elastic modulus (Youngs modulus)
Verification of static equilibrium
Bending characteristics of a brass/steel compound beam, with and without shearing connection between the two layers
Equivalent sections characteristics of a metal-faced wooden beam
Simple and propped cantilevers with any loading
Simply supported and cantilever beams with sinking supports
With the Specimen Beams, these additional experiments can be done:
The effects of material and section shape on flexural rigidity
Continuous beams statically indeterminate cases for simply supported beams and cantilevers on more than two supports with any loading (including measurement of unknown reactions
Deflections on a non-uniform (tapered) beam or cantilever.
Computer interface unit and software are included. The Three Hinged Arch Computer Interface set has the same accessories as except Horizontal Force Support is replaced by Horizontal Force Load Cell.
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The dynamic tests run the input of the different drive units at a given speed using a motor, while measuring the input power. At the same time, a dynamometer loads the output of the drive unit while measuring the output power. A bench-mounting base unit forms the main part of this set of products. Supplied with a three-shaft gear drive unit as standard, the base unit dynamically tests the gear drive and the other optional drive units. Includes simple tools needed to fit the drive units to the base unit, and to adjust the compound gear drive. In the base units upper level, the student fits their choice of drive unit. Students use the measurements to find the performance and efficiency of the drive unit. Students may set the gear unit (supplied) as a simple or compound drive by sliding a gear in or out of mesh on the third shaft. A variable-speed, low-voltage motor provides the shaft input turning force (effort) to the drive. A dynamometer provides the output braking force (load) to the drive. Fans provide air cooling for both the motor and dynamometer. Flexible couplings with collets connect the drive unit to the motor and dynamometer for quick and accurate alignment. The dynamometer uses electromagnetic braking and a hysteresis effect to provide a variable load at a constant torque irrespective of the speed. Sensors on the motor and dynamometer measure their shaft speed, torque and therefore power in and out at the drive.
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Experiments:
Safety control using the high and low pressure switch and flow switch
Plant start-up and system monitoring using the incorporated protection and safety devices
Study and understanding of the operation of a chiller unit
On-off control of the cooled water temperature.
Detecting the system operating parameters:
Calculation of thermal balances for the refrigerant and water circuit
Plotting of the refrigerant cycle on a pressure-enthalpy diagram of the refrigerant gas
Hydrostatics Bench is styled to be a matching unit to Hydraulics Bench, which provides a range of hydro dynamic experiments. A number of the individual experiments are permanently mounted on the backboard, whilst the remaining items are conveniently stored in the cupboard along with the triple beam balance. The working surface is recessed and supplied with a drain point. The optional barometer, consists of siphon type barometer mounted on a wooden backboard supplied complete with mounting brackets for attaching to the frame of the Hydrostatics Bench. The unit is self-contained and independent of all laboratory services. The bench consists of a steel-framed unit, mounted on castors, and containing a high quality fibreglass work surface, a steel backboard and a storage cupboard and shelf under the work surface.
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Nett dimensions and weight:
1850 mm long x 1870 mm high x 960 mm front to back and 670kg
Packed volume and weight: 5 m3 and 800 kg
Three-phase loads:
220 V star-connected resistive, inductive and capacitive
110 V delta-connected resistive
Protection relays:
1 x single phase over current
1 x three phase over current
1 x three-phase over current with voltage
Transformers:
2 x low-voltage single-phase
1 x line power 5 kVA three-phase delta-star reduces theincoming supply down to 220/230 V
1 x line receive 3 kVA three-phase delta-star with starpoint link to earth 220 V/110 V three-phase. Includes tap selection on itsprimary windings of ±10%, ±7.5%, ±5%, ±2.5%, and 0%.
Low voltage supplies:
30 volts d.c. or 0–30 volts a.c.
