Flow Meter Demonstration Unit (Product Code: SLE/MCE/43) is a hydraulics bench accessory used to compare and calibrate a Venturi meter, a variable area meter and an orifice plate in fluid mechanics laboratories. Its eight-tube manometer also traces the pressure curve along the Venturi, which has a 15 mm throat, while the variable area meter reads 2 to 20 l/min. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer of lab equipment for technical institutes, at its own factory in Ambala, India.
| Parameter | Detail |
|---|---|
| Flow meters | Venturi meter, variable area meter and orifice plate, with a flow-control valve |
| Manometer board | 8 tubes, 0 to 400 mm range, pressurised with a hand pump |
| Venturi throat diameter | 15 mm |
| Upstream pipe diameter | 31.75 mm |
| Upstream taper | 21° inclusive |
| Downstream taper | 14° inclusive |
| Orifice plate diameter | 20 mm |
| Variable area meter | 2 to 20 l/min |
| Head loss measurement | Pressure tappings across each meter |
| Water supply and calibration | Placed on a hydraulics bench, which supplies the water and provides the volumetric measuring tank |
| Dimensions (as listed) | 800 x 800 x 1200 mm |
| Weight (as listed) | 120 kg |
| Product code | SLE/MCE/43 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
The unit answers a practical question students will meet in industry: which meter should be fitted, and how far can its reading be trusted? With the circuit standing on the hydraulics bench, the class sets a flow on the control valve, reads the three meters, then collects water in the bench's volumetric tank against a stopwatch to get the true flow for calibrating each one.
Because the manometer tubes are spread along the Venturi, the same readings show the pressure falling into the 15 mm throat and recovering through the 14° diffuser — a direct check of Bernoulli's equation and of the continuity principle. The tappings across each device then reveal how much head each meter permanently costs the system. Pressurising the manometer with the hand pump keeps all eight levels on the scale at higher flows.
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, and the company is the OEM (original equipment manufacturer) of this Flow Meter Demonstration Unit. The meter circuit, manometer board and support framework are produced at its own licensed factory at Saha, Ambala, Haryana, India, and the unit ships from there directly to the buyer.
Dealing with the maker helps when a laboratory later needs an additional unit, a new manometer tube or a replacement fitting — ask us and the request goes straight to production. Universities, polytechnics, dealers and importers in India and international markets are supplied factory-direct. More on the company: ScienceLab company profile.
Other bench accessories and aids for flow measurement practicals:
The Fluid Mechanics category has the rest of the hydraulics range.
Which flow meters does the Flow Meter Demonstration Unit include?
The Flow Meter Demonstration Unit includes a Venturi meter, a variable area meter and an orifice plate, with a flow-control valve and pressure tappings across each meter, so students can compare readings and head losses directly.
What manometer comes with the unit?
The Flow Meter Demonstration Unit is supplied with a manometer board of eight tubes and a 0 to 400 mm range. A hand pump pressurises the manometer so the levels stay readable, and several tubes trace the pressure curve along the Venturi.
What are the Venturi and orifice dimensions?
On the Flow Meter Demonstration Unit, the Venturi has a 31.75 mm upstream pipe diameter, a 15 mm throat, a 21° inclusive upstream taper and a 14° inclusive downstream taper. The orifice plate diameter is 20 mm.
Is a hydraulics bench required?
Yes. The Flow Meter Demonstration Unit is placed on a hydraulics bench, which supplies the water and provides the volumetric measuring tank used to calibrate each flow meter. Tell us in your enquiry if your laboratory does not have a bench.
What flow range does the variable area meter cover?
The variable area meter on the Flow Meter Demonstration Unit reads from 2 to 20 l/min. Within that range students set several flows with the control valve and plot calibration curves for the Venturi meter and the orifice plate.
Who manufactures the Flow Meter Demonstration Unit?
The Flow Meter Demonstration Unit is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own factory in Ambala, Haryana, India, and quotations come straight from the manufacturer.
For prices and delivery terms on the Flow Meter Demonstration Unit (SLE/MCE/43), contact us through the contact page or add it to the enquiry cart. The manufacturer quotes directly for single units and institutional quantities.
Last updated: 24 September 2026