Flow Measurement & Control


Alia flowmeters solve crop irrigation problems

October 2016 Flow Measurement & Control

Representatives from Volition Controls approached the manager of a large ranch in Wimauma, Florida, and enquired about the flowmeters used for crop irrigation. They learned the ranch had been using turbine type flowmeters to measure their irrigation water for many years. These turbine style meters are mechanical and the ranch indicated that they normally fail after a few years of service. It was mentioned that they could not filter the water enough to prevent particulate from catching on the turbines and fouling the readings. The turbine meters also require very large holes to be cut into the pipe.

Volition Controls quoted an Alia model AMF100 insertion magnetic flowmeter with a model AMC4000 battery powered converter that has an LCD display for flow rate and total indication.

The state of Florida requires annual flow test audits of each flowmeter. The ranch manager asked if Volition Controls could perform the audits for the ranch. The representatives offered the service, but also offered to sell them a meter that they could use to perform their own audits. They could purchase their own portable meter for similar cost of a few audits.

Volition Controls installed the insertion flowmeter by drilling a 50 mm hole and adding a saddle with a nipple and coupling. Once the insertion magnetic flowmeter was installed, the Alia model AUF600 portable meter, purchased for performing the audits, was installed as well.

The installation and set-up time for both meters was about 1,5 hours. The totalisers of both meters were zeroed and the pump was turned on for a period of 10 minutes. The pipe was empty at start-up. At the end of the test period, there was a difference of less than 1,2% between totalisers of the insertion and clamp-on audit meters. The ranch was very pleased with the results and plan to purchase more in the future.

For more information contact Martin McLeman, Blanes Pressure Solutions, +27 (0)11 422 1749, martin@pressuresolutions.co.za, www.pressuresolutions.co.za



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