Flow Meter Demonstration Unit
Product Code : EL-FMLE-10658
Flow Meter Demonstration Unit (code EL-FMLE-10658) is a unit used on a Hydraulics Bench to compare three ways of measuring flow: a Venturi meter, a variable area meter and an orifice plate, fitted with a flow-control valve. The transparent plastic meters are laid out with their pipework on a metal sheet, with pressure tappings read on an 8-tube, 0-400 mm manometer board; the Venturi throat is 15 mm in a 31.75 mm pipe, the orifice plate is 20 mm and the variable area meter covers 2-20 l/min.
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Specifications
| Parameter | Detail |
|---|---|
| Use | Directly comparing flow measurement by Venturi meter, variable area meter and orifice plate, on a Hydraulics Bench |
| Meters | Venturi meter, variable-area meter and orifice plate, with flow-control valve |
| Construction | Measuring devices of transparent plastic, laid out with their pipework on a metal sheet |
| Pressure tappings | Measure the head loss across each meter |
| Manometer board | 8 tubes, range 0-400 mm; shows the pressure curve along the Venturi |
| Calibration | Each flow meter calibrated using the volumetric measuring tank of the bench |
| Connection | Quick-release fitting for the Hydraulics Bench |
| Experiments | Direct comparison of the three flow meters; calibration of each meter; comparison of pressure drops across each device |
| Variable area meter | 2-20 l/min |
| Orifice plate diameter | 20 mm |
| Venturi dimensions | |
| Throat diameter | 15 mm |
| Upstream pipe diameter | 31.75 mm |
| Upstream taper | 21° inclusive |
| Downstream taper | 14° inclusive |
| Dimensions and weight | |
| L × W × H | 800 × 800 × 1200 mm |
| Weight | 120 kg |
| Supply | |
| Product code | EL-FMLE-10658 |
| Manufacturer | Engineering Lab Equipment, Ambala, Haryana, India |
What Is the Flow Meter Demonstration Unit Used For?
Venturi meters and orifice plates infer flow from the pressure drop created by a restriction, while a variable area meter indicates flow directly on its scale, and each type costs a different amount of head. With the unit connected to the bench, students set a flow with the control valve, read the variable area meter and all eight manometer tubes, then time a volume in the bench's measuring tank to find the actual flow. Setting the results side by side calibrates each meter, shows the pressure profile along the Venturi and shows which device loses the most head.
What to Specify When Ordering
- Quantity — the number of demonstration units required.
Frequently Asked Questions
Which flow meters can be compared?
A Venturi meter, a variable area meter and an orifice plate are fitted together with a flow-control valve, so their readings can be compared directly at the same flow.
How is each meter calibrated?
Flow through the unit is collected in the volumetric measuring tank of the Hydraulics Bench, and the measured volume over a timed period is set against each meter's reading.
What are the Venturi dimensions?
The Venturi has a 15 mm throat in a 31.75 mm upstream pipe, with a 21° inclusive upstream taper and a 14° inclusive downstream taper.
What does the manometer board read?
It has 8 tubes with a 0-400 mm range, connected to tappings that give the head loss across each meter and the pressure curve along the Venturi.
What are the variable area meter range and orifice size?
The variable area meter reads from 2 to 20 l/min, while the orifice plate has a diameter of 20 mm for comparison with the Venturi.
Why are the meters made of transparent plastic?
The transparent plastic lets the function of each measuring device be seen while water flows through it, alongside the pressure readings on the manometer board.
OEM Manufacturer
Buyers of the Flow Meter Demonstration Unit deal directly with its maker, Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd), whose works are at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests fluid mechanics apparatus for flow measurement, pipe friction, pumps and hydrostatics, supplies engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and builds to institution-specific requirements on request. Tender details are on the Tenders/OEM page.
Related Fluid Mechanics Equipment
- Orifice and Venturi Meter Demonstration — bench unit pairing Venturi and orifice plate with a 2 to 30 l/min flow meter for Cd tests.
- Bernoulli Theorem Demonstration Module — clear acrylic Venturi module with Pitot probe and eight-tube manometer for verifying Bernoulli's theorem.
- Pitot Tube Apparatus — traversing Pitot static tube in a 32 mm transparent pipe with pressurised water manometer for velocity profiles.
- Orifice and Mouth Piece Flow Apparatus — constant-head clear tank with 3.5 and 6 mm orifices, Pitot traverse and 8 jet trajectory probes.
See the full Fluid Mechanics Lab Equipment range or all Mechanical Engineering Lab Equipment.
Request a Quote
For this and other fluid mechanics lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. Quotations are given on request: send the number of flow meter demonstration units required and your delivery location through the contact page, or add the Flow Meter Demonstration Unit to the enquiry cart from this page.
Last updated: October 2026
