Bedside Locker Psychiatric
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The Complete A/C Diagnostic Tool
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Copper Fitting Brush
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68HCH/68000 Trainer System
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Traffic Signal Control
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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.
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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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.
The hot water circulator system connected to the column jacket enables automatic control of temperature adsorption to a set point value.
A benchtop unit comprising a vacuum formed ABS plastic plinth with integral electrical console onto which is mounted the stainless steel, packed fixed bed adsorption column, hot water circulation system and infrared detector.
Gas feed flow rate can be controlled between 0 and 5 l/min.
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.
Forced Convection Heat Transfer apparatus allows students to examine the theory and associated formulae related to forced convection in pipes. It is a frame holding a motor-driven fan, piping and instrumentation panel. A basic knowledge of forced convection heat transfer theory is valuable in many engineering fields, especially heat-exchanger design. It also has a large work surface for student convenience. The fan runs at a constant speed and draws air through a control valve. A larger manometer on the instrument panel measures the fan pressure drop. The u-shaped pipe connects to a smaller diameter insulated and electrically heated copper test pipe. The air then moves into a u-shaped pipe.An orifice plate in the pipe connects to a manometer on the instrumentation panel to measure the airflow rate. The test pipe discharges to atmosphere. Pressure tappings each end of the test pipe connect to amanometer on the instrument panel to measure test length pressure drop. Students control the power input to the test pipe heater using a variable transformer while noting the power using instrumentation on the panel. Further thermocouples measure temperature at various points within the test pipe insulation. Students use a digital indicator on the instrumentation panel to display thermocouple temperature readings. A thermometer measures the air temperature at the inlet to the test pipe.Thermocouples measure the temperature at various points along the test pipe wall.
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Features:
The equipment that you assemble will transmit voice from one point to another, using light traveling through an optical fiber.
The experiment of shows you how easy it is to make productive use of fiber optic materials.
With four different data transmission ways (self module
Transmission, and module-to-PC transmission).
Transmission, module-to-module transmission, PC-to-module.
