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Flow rate measurement with FLOWBOX flow meter and venturi KPV flume


FLOWBOX flowmeter with KPV Venturi flume


The subject of our offer is a Venturi flume intended for measuring momentary and total flow of the liquid in gravitational channels, with the use of an ultrasonic flow meter FLOWBOX . Upon request, it’s also possible to carry out pre-investment technical consulting, as well as subsequent installation, launching* and protocol-based delivery of flow meter for the use. We also sell individual elements of the measuring set manufactured by us (e.g. only Venturi flume or only flow meter FLOWBOX).


* Launching of our ultrasonic flow meter FLOWBOX in your facility (unlike many products of the competition) is very simple and in most cases, it doesn’t require a visit of specialized service – we provide factory pre-programmed (for the given type of flume or measuring weir) and pre-calibrated set (only one parameter needs to be adjusted).




pdf_iconVenturi flume data sheet

pdf_iconFLOWBOX flow meter data sheet

pdf_iconFLOWBOX flow meter manual




* FLOWBOX flow meter = Ultrasonic level sensor with cable + M1600 Transmitter

Measuring set design - FLOBOW flow meter with KPV flume



The liquid flow rate measurement with Venturi flume and water rise method in rectangular channels is based on the actual liquid level measured by the ultrasonic sensor (radar sensor, optional) at the hydraulic structure converted into the value of flow ratio by the measuring transmitter.

The basic condition to apply the method is to provide, undisturbed and laminar flow in a measuring flume and free outflow of liquid from the measuring flume.


Set design - KPV flumes------------


Venturi flumes in accordance with UNIKLAR-77 data sheet are intended for measurement of volumetric flow rate in rectangular channels with gravity flow. The flumes are made of stainless steel and enable measurements within the range specified in the table below. The self-cleaning feature of the flumes enables measurements of media with solid impurities. CAUTION! We also provide Khafagi-Venturi QV302...QV316 flumes.


Venturi KPV2 flume  KPV3 measuring flume

Venturi measuring flume  Venturi KPV10 flume load


The flume is embedded in concrete in a rectangular channel with minimum gradient maintained and subcritical flow. The measurement in lower range for a specific flume type will be encumbered with a significant error.



Koryta KPV - wymiary

(dimensions in cm)

Zwężka Venturi'ego - wymiary


1 - Venturi flume

2 - Well

3 - Inlet channel

4 - Ultrasonic level sensor

5 - Outlet channel


Exemplary instalations------------

KPV1 measuring flume  Venturi flume with FLOWBOX flow meter

A part of KPV7 flume  Venturii KPV3 flume while operating

Venturi flume  KPV measuring flume

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