Venturimeter Orificemeter Calibration Set Up
Product Code : EL-FML-11040
Quick answer: The venturimeter orificemeter calibration set-up is a recirculating bench for finding the coefficient of discharge of a venturimeter and an orificemeter. Both clear acrylic meters sit on parallel 1 inch lines from a common manifold, with a differential manometer for the pressure drop and a 25 litre measuring tank for the actual flow. Lab Exports manufactures it in Delhi for engineering colleges, polytechnics and TVET institutes.
Specifications
| Component | Specification |
|---|---|
| Venturimeter | Clear acrylic, for 1 inch dia. pipe |
| Orificemeter | Clear acrylic, for 1 inch dia. pipe |
| Pipe layout | Two lines in parallel from a common manifold, each with a valve |
| Pressure measurement | Differential manometer on the pressure tappings |
| Pump | FHP pump, standard make |
| Flow measurement | Measuring tank, 25 litre |
| Sump tank | 50 litre, stainless steel |
| Timing | Electronic stop watch |
| Control panel | On/off switch, mains indicator |
| Utilities | Water supply and drain; 0.5 kW, 220 V AC single phase |
How the venturimeter and orificemeter experiment is done
Both meters work by narrowing the flow and measuring the pressure drop this causes. From Bernoulli's equation and continuity, the ideal flow is Qth = a1 a2 sqrt(2 g h) / sqrt(a1^2 - a2^2), where a1 and a2 are the inlet and throat (or orifice) areas and h is the differential head. The actual flow, measured in the tank, is smaller, and Cd = Qactual / Qth.
The venturimeter's smooth converging and diverging cones recover most of the pressure, so its Cd is typically about 0.95 to 0.98. The sharp-edged orifice forms a vena contracta and loses more energy, giving a Cd nearer 0.6 to 0.65. Running both on one bench makes the difference clear.
- Open the valve to the venturimeter line and close the orificemeter line.
- Start the pump and set a steady flow with the control valve.
- Read the differential manometer across the meter tappings.
- Measure the actual flow by timing a volume collected in the measuring tank.
- Repeat at several flows, then switch to the orificemeter line and repeat.
Key features
- Venturimeter and orificemeter in clear acrylic, so the flow path is visible
- Parallel lines from a common manifold, each valved for independent use
- Differential manometer for the pressure drop across either meter
- Self-contained recirculation with a 50 litre stainless steel sump
- Actual discharge from a 25 litre measuring tank and electronic stop watch
Documentation and supply
Installation instructions and a manual are supplied with the apparatus. Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the venturimeter orificemeter set-up at its works in Laxmi Nagar, Delhi, and supplies it to engineering colleges, polytechnics and TVET institutes in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Fluid Mechanics Lab products
- Discharge Over Notches Apparatus (EL-FML-11039)
- Study of Pipe Fitting (EL-FML-11041)
- Bernoulli Theorem Apparatus (EL-FML-11038)
- Friction in Pipe Lines Apparatus (EL-FML-11042)
- Reynolds Apparatus (EL-FML-11037)
- Impact of Jet on Vanes Apparatus (EL-FML-11043)
The full range is in the Fluid Mechanics Lab section of the Engineering Lab range.
Frequently asked questions
Why is the Cd of a venturimeter higher than that of an orificemeter?
The venturimeter narrows and widens the flow gradually, so little energy is lost; the orifice plate causes a sudden contraction and more loss, which lowers its Cd.
Can the two meters be used separately?
Yes. They are connected in parallel, and valves let either meter be put into operation on its own and regulate the flow rate.
What utilities does the set-up need?
A water supply and drain, and a single-phase 220 V AC, 0.5 kW electricity supply.
What is the price of the venturimeter orificemeter set-up?
Prices are not published on the website. Add the venturimeter orificemeter set-up to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-FML-11040 and the quantity, to receive a quotation.
Does Lab Exports manufacture the venturimeter orificemeter set-up?
Yes. Lab Exports manufactures the venturimeter orificemeter set-up at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-FML-11040.
Request a quote
Email [email protected] with the house code EL-FML-11040 and the quantity, or add the venturimeter orificemeter set-up to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
