A bed of granular medium (usually sand, but other materials can be used such as Ballotini or anthracite) is placed in a readily demountable tube through which water can be made to flow in either a downwards or upwards direction.
The test section tube and all tubing connections are transparent so that operation can be observed and the presence of air bubbles easily detected. All metal fittings are corrosion resistant.
Pressure drop across the bed can be measured either by a 0.5m length water differential manometer or a 0.5m length Mercury manometer (see recommended accessories), depending on the magnitude. Valves are fitted for isolation of various parts of the circuit, together with air release valves.
Flow from a laboratory tap passes through a constant head tank, which also allows air bubbles to be released, and is controlled by hand with a needle valve. The rate of flow is indicated by a variable area meter.
No power connections are required and the whole apparatus can be lifted and transported by one person. Test material (Ballotini) for the packed bed is supplied but Mercury for the manometer is not included.
Experiments:
Flow under a sheet pile and determination of critical seepage force at which piping occurs
Flow through an earth dam with and without a toe drain
Draw down in horizontal flow (simulation of ground water flow into a river or well)
Determination of seepage beneath a structure
Construction of flow nets and determination of coefficient of permeability
General studies of seepage and drainage
Seepage flow under an impermeable dam
Flow through a porous medium
Determination of uplift pressures on structures such as building foundations.
The Iengine rig is equipped with a fully functional original engine on the current technological development. The circuit diagrams and repair manuals are included on the supplied CD. Diagnostic sockets are fitted to the engine rigs as appropriate. All rotating parts arefully guarded. The motor is mounted on a movable aluminum frame. The permanently installed test box with 4mm sockets with direct access to all154 ports of the engine control unit and the adapter cables offer thepossibility to represent 20 realistic faults and malfunctions, to locate andfix it. The engine rigs offers an enhanced training resource, hands-ontraining with real components, greater understanding for the student withoutthe constraints of the modern motor vehicle. In addition, the motor training stand has simulator components (5), an emergency-off switch as well as a table to place a laptop for instance.
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The enginecan be turned easily by a crank handle.
All parts move along.
Cutaway are:
Cylinder andcylinder head
Turbo charger
Camshafttiming chain housing
Vacuum pump
Fuelinjection pump
Water pump
Valve cup
Ignition coil
Rail tube
Hydraulic valve lifter
Oil pump
Injection nozzle
Air intake manifold.
Many parts have been chromium-plated and galvanized for a longer life. Petrol Electro Injector Cutaway is carefully sectioned for training purposes, professionally painted with different colours to better differentiate the various parts and cross-sections.
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Many parts have been chromium-plated and galvanized for a longer life. Petrol Engine Cutaway model is carefully sectioned for training purposes, professionally painted with different colours to better differentiate the various parts, fuel system, cross-sections, lubricating circuits, cooling system etc.
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Single-body carburettor
Inlet manifold
Float with fuel level gauge (tank)
Diaphragm pump
Many parts have been chromium-plated and galvanized for a longer life. Petrol Engine (Ferrari) Cutaway model is carefully sectioned for training purposes, professionally painted with different colours to better differentiate the various parts, fuel system, cross-sections, lubricating circuits, cooling system etc.
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Many parts have been chromium-plated and galvanized for a longer life. Petrol Engine With Gearbox Cutaway model is carefully sectioned for training purposes, professionally painted with different colours to better differentiate the various parts, lubricating circuits, cross-sections, fuel system, cooling system etc.
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Self contained fully operational Petrol and Diesel Engine Rigs. Engines canbe supplied with fault insertion boards, this allows a range of open circuitand high resistance faults to be inserted, designed to aid teachingdiagnostics, fault finding and troubleshooting.
Complete with start,charge, fuel, air-intake, cooling and exhaust systems.
Petrol anddiesel engine rigs are manufactured to replicate the engine bay of the donorvehicle.
The petroland diesel engine rigs offers an enhanced training resource, hands-on training with real components, greater understanding for the student with out the constraints of the modern motor vehicle.
Diagnosticsockets are fitted to the engine rigs as appropriate. Optional Fault Boardavailable.
All rotatingparts are fully guarded.
This PH test strip is a wide range of tests for laboratory / cosmetic / drinking / saliva / urine / vaginal fluid testing and so on.
PH less than 7 is acidic, PH equals 7 is neutral, and PH is greater than 7 is alkaline.
The stronger the acidity, the smaller the pH value, the stronger the alkalinity, the greater the pH
80 for each pack, can use 80 times.
Each package comes with separate color cards. After testing the color of the palette, you can see the pH.
The stronger the acidity, the smaller the pH value, the stronger the alkalinity, the greater the pH.
PH less than 7 is acidic, PH equals 7 is neutral, and PH is greater than 7 is alkaline.
Digital controller, parameterisable as a P, PI or PID controller
2 pH value sensors in transparent measuring tanks with overflow
Product tank and 2 chemicals tanks
Trainer for control engineering experiments
pH value control process, equipped with standard industrial components
Water connection with control valve and rotameter
Corrosion-resistant piping system
Hand-held pH-meter for product control
Neutralisation of a caustic solution with an acid
2 metering pumps: adjustable manually or via controller
Process variables X and Y accessible as analogue signals via lab jacks
2-channel line recorder.
Pharmacy First Aid Kit
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The unit is housed in a half-size totally enclosed portable modular unit. Connections can be made through 4-mm color-coded safety terminals using patch cords with banana plugs. The Phase Meter is used to teach how to measure phase angles between two different output signals. The input signal is a reference for the unit and two indicating lights display the negative or positive phasing. Schematic diagrams and specifications are silk-screened onto the back of the front panel of each unit. Interconnections between components and connections are made through standard color coded safety sockets with banana plug jumper leads.
Educational Advantages:
Used to teach how to measure phase angles between two different output signals
Two (2) indicating lights display the negative or positive phasing.
Mobile LED phototherapy unit AC powered including accessories. Jaundice, a yellowish discoloration of the skin, eyes, and mucous membranes, is a major symptom observed when bilirubin levels in blood rise above 5 mg/dL. Phototherapy units are used to treat hyperbilirubinemia, a condition characterized by high bilirubin concentrations in the blood. Bilirubin, a product of haemoglobin breakdown, remains in the body until the liver can convert it to a form that can be excreted.
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Photochemical Demonstration Device
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Photoelastic experiments with an overhead polariscope
All filters rotatable in any direction on the horizontal plane
Plane or circular polarised light possible
Green filter for monochromatic light
Polariser and analyser each comprising a polarisation filter and quarter wave filter
Filter enclosed, with stress-free glazing
8 different polycarbonate (pc) models supplied
Load application device with force gauge for compressive and tensile loading
Storage system to house the components.
It is used both for quantitative measurements and for demonstrating complex stress states. Photoelasticity is a proven method of analysing and recording mechanical stresses and strains in components. The components used are models made of a transparent, photoelastically sensitive plastic, which becomes optically birefringent under mechanical load.
Features:
Generate stress patterns with linear or circular polarised light
Monochromatic or white light.
