メガケム List of Products and Services

We will demonstrate the transition from laminar flow to turbulent flow and compare the critical Reynolds number in transitional flow with theoretical values. The setup consists of a glass head tank and glass tubes, an ink tank, and an injector, allowing us to observe the behavior of the flow using dye while adjusting the flow rate with a drainage valve located at the bottom of the apparatus. We will experiment on what happens when the flow transitions from laminar to turbulent. Additionally, experiments can be conducted by using an optional heater module (sold separately) to change the water temperature and viscosity.

• Vocational Training/Technical School

We will analyze the flow from the orifice or nozzle discharged in the vertical and horizontal directions. While measuring the flow reduction, velocity, and discharge amount, we will analyze various discharge characteristics and the effects of Reynolds number, and measure the trajectory of the horizontal jet.

• Vocational Training/Technical School

It consists of a 5-meter long adjustable slope open channel, a water storage tank, a water circulation pump, a channel slope adjustment jack, a digital inclinometer, and a digital flow meter, which draws water at a maximum rate of 180 L/min to the upstream of the channel with a cross-section of 80xH250mm. Additionally, necessary equipment for the experiment, such as weirs, flumes, depth gauges, and pitot tubes for total pressure measurement, will be provided along with the experimental procedure document.

• Vocational Training/Technical School

This is an experimental device for measuring pressure loss and flow measurement techniques in various pipes and fittings, consisting of a main body and a measuring manometer. Using three types of pathways that include measuring instruments, straight pipes, and bent pipe components, the characteristics of each component are investigated and compared using a manometer and differential pressure gauge. In addition to learning general measurement methods and the application of Bernoulli's theorem, the experiment involves comparing pressure losses in a Venturi tube and an orifice plate, as well as determining the pressure loss in a sudden expansion pipe. The Pitot tube system within the device also derives the velocity distribution and flow coefficient in the transparent pipe cross-section direction. The experiment requires a H1F hydraulic bench (sold separately) for water supply and flow measurement.

• Vocational Training/Technical School

This is an experimental device for visualizing flows similar to potential flow, which creates flow patterns using colored water to observe the flow around various shapes. Additionally, the four valves can control two water supply holes and two drainage holes located near the center to create streamlines. *It is recommended to supply water to the device from a stable source, such as an elevated tank.

• Vocational Training/Technical School

The friction loss of a horizontal small-diameter pipe (φ3xL524mm) will be measured, and the determination of the critical flow transition point and critical Reynolds number will be conducted through the ranges of laminar and turbulent flow. In the low flow experiments, an elevated tank and manometer will be used, while in the high flow experiments, the water supply pipe will be directly connected to the apparatus, and the differential pressure will be measured using a digital differential pressure gauge. The flow rate will be controlled by a needle valve at the downstream end of the test pipe, and water will be supplied using an H1F hydraulic bench (sold separately), although existing water supply systems can also be used.

• Vocational Training/Technical School

This is an experimental device to understand the significance of water hammer and cavitation that occur in pumps and hydraulic turbine systems. It consists of a 61-meter long coiled copper pipe, a solenoid valve, pressure sensors and Bourdon tube pressure gauges, a floating flow meter, a flow control valve, and a bypass valve. Water is supplied to a copper pipe with an inner diameter of 12.7 mm, and the flow rate inside the pipe is adjusted using the flow meter and bypass valve. The control box has a solenoid valve operation switch and a BNC terminal for pressure measurement, allowing it to be connected to an oscilloscope (sold separately) to observe the behavior.

• Vocational Training/Technical School

We will conduct experiments on the total water pressure acting on the flat and curved surfaces of a transparent plastic container with a quarter-circle shape supported at a pivot point, as well as its points of action. We will fill the entire container or part of it with water and measure the forces exerted by the liquid, comparing them with theoretical values.

• Vocational Training/Technical School

We will conduct characteristic experiments on various flow meters used around us. The inlet and outlet of the piping will measure the pressure loss of the flow meter, and the flow rate will be calculated from the pressure difference, flow coefficient, viscosity, density, etc., of each flow meter. By comparing the experiments of each flow meter, we will understand the accuracy and characteristics of the flow meters and consider their usage. A nozzle-type flow meter is included, but other options (sold separately) such as a Pitot tube flow meter (H40a), a Venturi flow meter (H40b), and an orifice flow meter (H40c) are available. The experiment requires a H1F hydraulic bench (sold separately) for water supply and flow measurement.

• Vocational Training/Technical School

We measured the pressure distribution at a total of 11 locations along a horizontally oriented translucent Venturi tube, derived the theoretical flow rate using Bernoulli's theorem from each cross-sectional area, and calculated the flow coefficient from different flow rates (maximum flow rate of 27 L/min). The 11 manometer tubes are connected to the upper head, allowing for adjustment of the manometer water head level by operating the air valve. The experiment requires an H1F hydraulic bench (sold separately) for water supply and flow measurement.

• Vocational Training/Technical School

Calibration of the Bourdon tube pressure gauge will be performed using weights. A skeleton-type Bourdon tube pressure gauge is used so that the internal operation can be learned, allowing observation of the internal tube moving under pressure.

• Vocational Training/Technical School

This is a device for extensively experimenting with the operating characteristics of a centrifugal pump. A variable-speed motor operates a pump that can be observed internally, drawing water from a tank and circulating it back to the tank through a strainer, valve, and venturi tube. The impeller section is designed with a transparent cover for observation. The pump's rotational speed (rev/min), torque (N.m), output (W), differential pressure in the venturi tube (△P), and inlet/outlet pressure of the pump are digitally displayed, allowing for a wide range of experiments by changing operating conditions through valve adjustments. Additionally, by using the optional data acquisition system VDAS (sold separately), various data can be collected and analyzed in real-time on a PC (sold separately).

• Vocational Training/Technical School

This is a device for extensively experimenting and researching the operational characteristics of centrifugal pumps and turbines (waterwheels). A variable-speed motor operates the pump, drawing water from a tank and circulating it back to the tank through a strainer, valve, and venturi tube. The pump's rotational speed (rev/min), torque (N.m), output (W), differential pressure in the venturi tube (△P), and inlet/outlet pressure of the pump are digitally displayed, allowing for a wide range of experiments by adjusting the pump's outlet and inlet valves to change operating conditions. By installing one of the separately sold options—a Pelton turbine, Francis turbine, or propeller turbine—along with a turbine dynamometer (MFP101a), it is also possible to measure the turbine's rotational speed, shaft torque, and output. Additionally, using the optional data automatic collection system VDAS, various data can be collected and analyzed in real-time on a PC (sold separately).

• Vocational Training/Technical School

This is an experimental device for comparing and verifying differences in pressure measurement methods. The manometer setup, consisting of a vertical manometer, an inclined manometer, a pressure gauge, and a vacuum pressure gauge, will conduct comparisons of each measurement value and characteristic experiments. Additionally, a specially designed Bourdon tube pressure gauge that allows for internal observation will enable the observation of the movement of the tube inside the instrument, and characteristic experiments will be conducted during pressurization and depressurization using weights. Each gauge and manometer is equipped with a pressure socket, and T-joints and tubes for conducting pressurization and vacuum experiments using a syringe are included.

• Vocational Training/Technical School

This is a device for conducting experiments on pressure and flow measurement in a Venturi tube, orifice plate, and floating flow meter, demonstrating the application of the energy equation (Bernoulli) for steady flow. The piping is made of transparent resin to allow observation of the internal conditions, and measurements include the head loss caused by each flow meter, sudden expansions, and the head loss from 90° elbows. The experiment requires a H1F hydraulic bench (sold separately) for water supply and flow measurement.

• Vocational Training/Technical School

We will experiment with the operation characteristics of two centrifugal pumps in series and parallel operation, or the operation characteristics of a single pump. The setup consists of electric motors (constant speed) that drive each pump individually, a transparent acrylic water storage tank and valves, and a floating flow meter, with pressure gauges placed at the pump inlet and outlet. The impeller part of each pump is designed with a transparent cover for observation, and cavitation demonstrations can also be conducted. *There is also a PC data collection system type available with a similar experimental setup as H52. H53V Series and Parallel Pump Experimental Device (Variable Speed) H53V can vary the pump motor speed and digitally displays the rotational speed (rpm), torque (N.m), output (W), pressure (bar), flow rate (L/s), and temperature. Additionally, various data can be collected and analyzed in real-time on a PC (sold separately) using the accompanying software.

• Vocational Training/Technical School

It is an oil pump used to transfer a fixed volume of liquid, available in rotary and piston types, and is utilized in many industrial products such as lubrication systems, hydraulic systems, automobiles, and medical devices. It consists of a pump drive motor and control unit (MFP100), an oil tank, and a fixed volume flow meter, measuring and digitally displaying the pump inlet and outlet pressure, flow rate, oil temperature, pump shaft speed and torque, and output on the control unit. Additionally, by using the optional data automatic collection system VDAS (sold separately), various data can be collected and analyzed in real-time on a PC (sold separately).

• Vocational Training/Technical School

This is a device used to experiment and research the operational characteristics of one or two spiral pumps (connected in series or parallel) over a wide range. Two variable-speed motors operate each pump, which can be observed from the inside, drawing water from a tank and circulating it back to the tank through a strainer, valve, and venturi tube. The impeller section is designed with a transparent cover for observation. The pump's rotational speed (rev/min), torque (N.m), output (W), differential pressure in the venturi tube (△P), and inlet/outlet pressure of the pump are digitally displayed, allowing for a wide range of experiments by changing operational conditions through valve adjustments. Additionally, by using the optional data automatic collection system VDAS (sold separately), various data can be collected and analyzed in real-time on a PC (sold separately).

• Vocational Training/Technical School

This is a device for efficiently experimenting with the causes and phenomena of cavitation generated by pumps and turbines. The device consists of a water tank, an electric pump, a flow control valve, a flow meter, a pressure gauge upstream of the Venturi tube and a pressure gauge at the throat, and a Venturi tube (with a transparent window). It allows for easy observation of the occurrence of cavitation while adjusting the flow rate, helping to understand how cavitation begins based on the theory calculated from the temperature, density, and pressure of the water and experimental results.

• Vocational Training/Technical School

It is called a water hammer or water impact pump, which takes in water from a high position and transports it to an even higher position. It consists of a drainage valve, air tank, pressure gauge, flow control valve, and elevated water tank set, and is used for experiments in combination with the H1F hydraulic bench (sold separately) and others.

• Vocational Training/Technical School

The experiment will be conducted using a waterwheel that converts the impact of water ejected from a nozzle into rotational force, consisting of an 80mm runner, an ejection nozzle, a friction load device (spring scale type), and an inflow pressure gauge, while varying the ejected water volume and load. The apparatus will be placed on a hydraulic bench (sold separately) for the experiment.

• Water treatment equipment

It is a waterwheel that uses the reaction of water hitting the runner as rotational force, consisting of an 80mm runner (with 10 blades), 6 adjustable guide vanes, a friction load device (spring scale type), and an inflow pressure gauge, and experiments will be conducted while varying the inflow water volume and load.

• Vocational Training/Technical School

We will conduct experiments on the pressure loss of various piping used in home central heating systems, etc. There are straight pipes, bent pipes, and two pathways with valves and expansion and contraction mechanisms, and we will close the valve of one pathway to conduct individual experiments. The experiments will require an H1F hydraulic bench (sold separately) for water supply and flow measurement.

• Vocational Training/Technical School

A compact tabletop experimental device that compares the energy losses of three types of bent pipes, sudden expansion, and contraction pipes, consisting of a multi-tube manometer and a flow control valve. The experiment requires an H1F hydraulic bench (sold separately) for water supply and flow measurement.

• Vocational Training/Technical School

This is an experimental setup consisting of a shallow tank and a floating pontoon (ark). By changing the height of the center of gravity and the angle of inclination, we analyze the shapes to derive stability.

• Vocational Training/Technical School