Velocity Meter
Product Code : EL-EFFCA-11072
Quick answer: The velocity meter measures local water speed in the Lab Exports experimental flume with a small impeller whose rotation rate is proportional to the flow velocity. A battery-operated digital display reads 0 to 5 m/s directly, and a 0-300 mm scale sets the probe depth. Lab Exports manufactures it in Delhi for engineering colleges, polytechnics and TVET institutes.
Specifications
| Item | Specification |
|---|---|
| Sensing element | Impeller turned by the flow; speed proportional to velocity |
| Display | Battery-operated digital display of flow velocity |
| Measuring range | 0 to 5 m/s |
| Positioning | Holder with vertical scale showing impeller position |
| Vertical scale | 0 to 300 mm, 1 mm graduation |
| Holder with impeller | 150 x 120 x 380 mm |
| Holder with display | 70 x 40 x 200 mm |
How it is used
An impeller meter is a laboratory version of the current meter used on rivers: the flow turns a small propeller, and its rotation rate is converted to a velocity. Because the value appears on the display at once, students can map a cross section quickly, without waiting for manometer columns to settle.
Readings taken at several depths and positions across the flume give the velocity distribution. Multiplying each local velocity by its share of the flow area and summing gives the discharge (the velocity-area method), which can be checked against the flume's rotameter or against a pitot-static tube at the same points.
- Fix the carrier at the measuring station on the experimental section.
- Set the impeller depth on the vertical scale, facing into the flow.
- Switch on the display and wait for a steady reading.
- Record the velocity at each depth and repeat at other stations.
- Compute the discharge by the velocity-area method.
Key features
- Impeller sensing with speed proportional to flow velocity
- Direct digital readout on a battery-operated display
- Range of 0 to 5 m/s
- Impeller tube moves vertically on a 0-300 mm scale with 1 mm graduation
- Carrier fixes at any position along the experimental section
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the velocity meter 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 Experimental Flume Flow Channel Apparatus products
- Pitot Static Tube (EL-EFFCA-11071)
- Broad Crested Weir (EL-EFFCA-11070)
- Extension Element of the Experimental Flume (EL-EFFCA-11069)
- Digital Level Gauge (EL-EFFCA-11075)
- Set of Plate Weirs, Four Types (EL-EFFCA-11068)
- Flow Channel Apparatus (EL-EFFCA-11076)
The full range is in the Experimental Flume Flow Channel Apparatus section of the Engineering Lab range.
Frequently asked questions
What range does the velocity meter cover?
It measures flow velocities from 0 to 5 m/s and shows them on a battery-operated digital display.
How does the velocity meter differ from a pitot static tube?
The impeller gives a direct digital reading, while a pitot-static tube needs two manometer readings and a calculation. Using both at the same points is a useful cross-check.
What is the price of the velocity meter?
Prices are not published on the website. Add the velocity meter to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-EFFCA-11072 and the quantity, to receive a quotation.
Does Lab Exports manufacture the velocity meter?
Yes. Lab Exports manufactures the velocity meter at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-EFFCA-11072.
Request a quote
Email [email protected] with the house code EL-EFFCA-11072 and the quantity, or add the velocity meter to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
