,Machine-lab-1523091331.jpg "Workshop MMA/TAGS (Manual Metal Arc/Tungsten Arc Gas Shielded), Machine")
Workshop MMA/TAGS (Manual Metal Arc/Tungsten Arc Gas Shielded), Machine
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Workshop Welding Machines Coil Re-Winding
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Brick Cutting Machine
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Metal Flexible Meter
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Laser Welding Machine
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Vehicle Electrical And Electronic System Trainer
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The Complete A/C Diagnostic Tool
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68HCH/68000 Trainer System
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Film and Dropwise Equipment
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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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Manufactured wholly in stainless steel and bench mounted, the vat ishygienic in use. Water is circulated around the vat jacket at apre-selectable temperatures by an internal pump. It has a removable paddle agitator of stainless steel, drivenby a variable speed motor.
Digital display of temperatureof vat contents and water temperature
Agitator stop/start and variablespeed control
The control system incorporates
Digital display of ph of vat contents
Integrated data logger with USBoutput
A specially designed perforated strainer fits into the vat outlet tofacilitate efficient draining.
Automatic control of agitatorspeed, temperatures and times for up to six steps
The ph and temperature probes are suspended in the vat contents from abracket on the rim of the vat.
The elements of a typical Supplemental Restraint System are: a system controller, a frontal airbag, a passengers airbag, side airbags, tensioners and sensors of side crashes. SRS AIRBAG System demonstration panel represents the AIRBAG System construction allowing evaluation of its parameters.
These elements enable diagnosing of the system.
The used sub-assemblies enable the diagnosis of the Supplemental Restraint System and of the modern control panel where the SRS AIRBAG System warning lamp is located.
The panel is equipped with an engine diagnostic connector for the installing of the diagnostic device, which enables the reading and the erasing of breakdown codes and current parameters plus the control of the control panels indicators and many other functions.
The fault simulation console enables the creation of breakdowns in selected circuits and the observation of the reaction of the control system to the occurred conditions.
