Flow Measurement & Control


Improving the supply of water to farmers

October 2013 Flow Measurement & Control

Concern about inaccurate measurement readings on open flow channels supplying farms in the Northern Cape prompted a local water treatment and supply company to approach Vega for a demonstration of its non-contact radar technology for the water industry. The company was not achieving the precision it required with the existing ultrasonic sensors it had installed.

Both the water flow volumes and the level of the channels needed to be monitored accurately, as these controlled the sluice gates that let the water through to the various farms in the area. Inaccurate flow readings were not only impacting the volumes that the farmers were being charged for, but also the levels could not be reliably controlled. The net result was numerous channel overflows and an unacceptable waste of water.

The recommendation was for a Vegapuls WL61 as it offered the required accuracy of 2 mm across the required measurement range; the user purchased one sensor for the purpose of field trials. An awkward challenge that had to be overcome during installation was the limited space available due to the nature of the application; ultimately this did not prove to be a problem as the sensor’s echo processing software proved its worth under these difficult operating conditions.

The output of the Vegapuls WL61 is processed by a separate signal conditioning unit with all performance data being logged and monitored. Two and a half months into operation the user commented that the Vega solution was enabling good control and a reliable water supply to the organisation’s regional customers.

For more information contact Vega Instruments SA, +27 (0)11 795 3249, [email protected], www.vega.com



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Hygienic flow measurement for the food industry
ifm - South Africa Flow Measurement & Control
With the SMF magnetic-inductive flow meter, ifm offers a solution for the hygienic flow measurement of media with variable flow rates through a pipe, such as beer, milk or fruit juice.

Read more...
Pulp fiction or pulp precision?
VEGA Controls SA Sensors & Transducers
The density of fruit concentrate has a direct impact on the flavour, texture and overall quality of the final product. The VEGA Minitrac 31, VEGASOURCE 31, and the KV 31 mounting bracket present a failproof solution that effectively addresses the technical complexities associated with high temperature, viscosity and fouling.

Read more...
Differential pressure measurement in gas extraction and power generation project
VEGA Controls SA Pressure Measurement & Control
Methane exploration and extraction in Lake Kivu in the East African Rift Valley has primarily focused on gas composition analysis. The VEGABAR 82 pressure transmitter was used for differential pressure measurement, the key to monitoring gas levels within the lake.

Read more...
Case History 197: Bad reboiler temperature control.
Michael Brown Control Engineering Editor's Choice Flow Measurement & Control
It is very important that reboiler temperature controls operate well in petrochemical refineries, or the product quality can really suffer. I was asked to check such a control in a refinery where they were having problems with one of these controls.

Read more...
Precision measurement for ultra-pure water systems
Anton Paar Flow Measurement & Control
[Sponsored] Ultra-pure water (UPW) is essential in industries where even minor contaminants can impact product quality and process integrity. Anton Paar’s L-Cor Coriolis mass flowmeters provide a highly accurate and hygienic solution by directly measuring the mass of the liquid using the Coriolis effect, ensuring a high level of cleanliness.

Read more...
Don’t buckle under pressure
VEGA Controls SA Pressure Measurement & Control
In Africa, urban populations are increasing and infrastructure is expanding at an unprecedented pace. This makes sustainable water management and treatment more crucial than ever. By investing in VEGA pressure instrumentation, water utilities and municipalities are equipping themselves with pressure sensors that facilitate sustainable water management focused on efficiency, reliability and resilience.

Read more...
Playing autoclave roulette
VEGA Controls SA Sensors & Transducers
Autoclaves ensure the sterility of medical and pharmaceutical products before reaching healthcare providers and their patients. To effectively manage these demanding conditions, VEGA provides reliable solutions, specifically the VEGAFLEX 81 and VEGABAR 83 sensors, which are designed to meet the stringent requirements of autoclave operations.

Read more...
Eliminating splashbacks, spills and early shutoffs in ultra high-flow fuelling
Flow Measurement & Control
Husky Corporation has unveiled the latest innovation in fuelling technology with its newly designed StreamShaper for ultra high-flow applications, which minimises early shutoffs and splashback spills.

Read more...
VEGA handles the pressures of water treatment systems
VEGA Controls SA Pressure Measurement & Control
A water treatment system for a major metropolitan area in the Midwestern United States demands careful monitoring and management of processes across its sprawling network. Choosing VEGA for its process automation needs meant more than just obtaining precise and reliable pressure sensors.

Read more...
Radiometric density measurements
Mecosa Flow Measurement & Control
Radiometric density measurements are used wherever conventional measurement techniques fail. Successful applications can be found in a wide variety of industries, especially where harsh process environments and difficult measuring conditions prevail.

Read more...