Plate Weirs Manufacturer,Supplier and Exporter in India
Product Code : EL-MLE-13257
Jlab Export is a leading Plate Weirs Manufacturer,and suppliers in India
Plate Weirs (code EL-MLE-13257) is a set of four sharp-crested weir plates for studying overflow and measuring discharge in an open channel. A rectangular weir with optional aeration shows the basic flow pattern, while the Thomson, Rehbock and Cipolletti plates are standard measuring shapes. JLab builds this four-plate weir set in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Weirs in the set | 4 sharp-crested plate weirs |
| Basic-flow weir | Rectangular, with optional aeration |
| Measuring weirs | Thomson (triangular), Rehbock (rectangular), Cipolletti (trapezoidal) |
| Level measurement | Free level gauge with scale |
| Use | Discharge measurement in open channels |
| Accessories | All accessories included |
| Quality check | Each weir set is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-MLE-13257 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Each Weir Shape Turns Head into Discharge
A sharp-crested weir is a control structure: it backs the water up to a defined level, and the head above the crest, found with the free level gauge, gives the discharge. Over a rectangular opening the discharge grows with the head to the power 3/2; through the triangular Thomson notch it grows with the head to the power 5/2, so even small flows produce a readable head.
The Rehbock plate is a rectangular measuring weir evaluated with a discharge coefficient that depends on the head and the crest height. The sloping sides of the trapezoidal Cipolletti plate offset the end contractions, so its discharge is worked out from the crest width with the plain rectangular law.
Why the Aeration Option Matters
On the rectangular weir, aeration lets air into the space beneath the falling sheet of water (the nappe), so the sheet springs clear of the plate. Without air the nappe can cling to the downstream face, the pressure under it falls, and the same head then passes more water than with the aerated, free-falling sheet.
Other Weir and Notch Apparatus
- Flow Over Weir or Open Channel Apparatus — pump-fed flow channel with interchangeable sharp-crested, broad-crested and ogee weirs.
- Notch Apparatus — notch tank with replaceable brass trapezoidal and rectangular notches.
- Discharge Over Notches — flow channel with a rectangular notch, two V notches and a pointer gauge.
The weir set is listed in Mechatronics Lab Equipments, a section of Mechanical Engineering Lab Equipment.
Request a Quote
Add the plates to an enquiry with Add To Cart, or send the quantity, the delivery address and any details of your flow channel through our contact page.
Last updated: 30 October 2026
