It is used in high school physics demonstration experiment to study equilibrium condition of object with fixed axis. It consists of aluminum disk 330mm in diameter, shaft, metal pin and hook.
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Dimension (L*W*H CM): 59.1*37.2*2
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For demonstration.
Wood production. White paint, black mark line and red number.
100cm, minimum dividing value: 1cm. Width: 45mm, thickness: 8mm.
It is used for teaching demonstration in middle school physics; it can accurately do experiments, such as: closed circuit Ohm’s law, using ammeter and voltmeter to measure electromotive force and internal resistance of battery, electromotive force and internal resistance of battery pack and output power of supply.
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It is mainly used for teachers to demonstrate electromagnetic induction and verify Lenz’s law in middle school physics.
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It is used to measure direct current and direct voltage, can also be used as galvanometer and is a visual teaching aid to study magneto-electric meter structure in teaching at school.
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It consists of pointer-type internal magnetic structure and measuring circuit, with fourteen grades measurement range. It is used as galvanometer in teaching demonstration experiment and is used to measure direct current, direct voltage, AC current and AC voltage.
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A fan with a flow control valve is connected to the bottom tank, and air is driven upwards through the column and exhausted at the top. Instrument are provided for measurement air flow rate, water flow rate, pressure drop across the cooling tower, temperature and moisture of the inlet and outlet air. This is a Cooling Tower Demonstration Unit. Water is heated in the storage tank, pumped through a flow meter and sprayed at the top of the tower. The water is cooled mainly by evaporation and drops to the bottom tank. Makeup water is admitted to the storage tank through a float valve. The packing in the tower breaks the water into thin films and droplets.
Experiments:
Application of steady flow equation to energy balance.
Cooling tower performance at various air and water flow rates with different inlet water temperatures.
Observation of water flow patterns and distribution.
Measurement of water and air flow rates, temperatures and humidity.
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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Despite its simplicity, the apparatus has a high degree of sensitivity and may be used for student project work as well as for demonstration purposes. The Demonstration Lysimeter consists of three 300mm diameter containers in which may be placed any soil type and a variety of crop types grown. Each container can then in turn be placed on a hydraulically mounted plate which is used to monitor system weight changes arising from evapotranspiration.
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It is used in middle school physics demonstration experiment and consists of resistance wire, graduated scale, sliding key and stent.
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Flocculation chemicals can be added to the rawwater in order to improve the flotation of the contaminants. The diatomiteprovided is suitable as a contaminant. Flotationprocesses are used to separate solids from a liquid. The flotation process mostcommonly used in water treatment is dissolved air flotation. The suspension tobe treated is placed in a tank. A pump transports the raw water, whichenters the flotation column via a vertical pipe. The air dissolves in the water under pressure. Part of the waterflows back to the pump via a bypass. The other part of the water enters apressure vessel filled with Pall rings. The height of the supply linecan be adjusted. The pressure vessel ensures asufficiently long dwell time to dissolve the air and to separate undissolvedair. A water circuit with pump is connected to the flotationcolumn. Two compressors supply air to the water circuit on the suction side ofthe pump.
The water then enters the flotation column from below via a valve. This causesa sudden drop in pressure to almost atmospheric pressure. The contaminants rise up in thecolumn together with the air bubbles. At the upper end of the flotation column,the contaminants enter a circulating channel. Since the solubilityof air increases with increasing pressure, the excess air forms small bubbles.The air bubbles accumulate on the contaminants.
Features:
Transparenttank for observing the processes
Mechanicalwater treatment
0N?2N?The product is composed of a spring, a pointer, a scale plate, a pull rod, a suspension device, a clamping handle and a pointer adjustment device, etc., indicating that the value tolerance range is not more than 0.1N, and the return to zero tolerance is not more than 0.05N.
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Loading of test bars with weights
Test bars cannot be overloaded
White backing wall with grid patterning
Demonstration of elastic buckling
4 steel test bars
Representation of all cases of euler buckling
Storage system to house the components
It consists of inclined plate, base plate, trolley weight barrel, support bar friction block and pulley support. It is used to do experiments, such as: to study the inertia of object, to demonstrate gravitational potential energy of object, to study the relationship between the force condition of object on the inclined plane and inclination of inclined plane, and to study static friction, sliding friction and rolling friction; combining with electromagnetic type electric timer to study law of uniform velocity motion, to measure acceleration of gravity and to verify the experiment of law of conservation of mechanical energy.
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Micro DC detection: DC(G)-50uA-0-500uA 0-100uA. DC voltage:DC(V)0-1V-2.5V-5V-10V-25V-50V-100V-150V-250V resistance measurement:R×1Ω?R×10Ω?R×100Ω?R×1KΩ meter precision ±2.5%.
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The product is composed of a glass thermometer, a scale brand and a protective sleeve. Temperature sensitive liquid: red, packed in a warm bulb and a capillary tube. Scale plate: made of thick 0.5mm aluminum plate, scale plate length 500mm, the scale of the line has two kinds of temperature indication, Celsius temperature (symbol?) and thermodynamic temperature (symbol?). Warm bubble: About 135mm, located in the lower end of the thermometer. Capillary: installed in the scale board, the capillary cross-section of the triangle, when the positive observation from the front, there is amplification. Scale range: 0 ~ 100? Scale range: 0 ~ 100 ?, thermodynamic scale of 273 ~ 373K. Each 1o line length is 4mm. Each 1o for the short term, each 5O for the middle line, each 10o for the long term. Showing the value of tolerance ±1?.
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Demonstration of Vernier Caliper
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It consists of pointer-type internal magnetic structure and measuring circuit, with fourteen grades measurement range. It is used as galvanometer in student teaching demonstration experiment and is used to measure micro direct current, direct voltage and direct resistance.
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