Electricity + Control April 2019

FLOW MEASUREMENT + INSTRUMENTATION

Rotating vane flow meter for low viscosity liquids

line electronics can use these signals for measuring, mon- itoring and dosing. With a measuring range of 0.05 - 0.6 litres per minute to 1.0 - 12 litres per minute and a measuring accuracy of 2% from measuring range full-scale value, the measur- ing device can be used widely. Built to operate in medi- um temperatures up to 140°C and maximum pressure of 30 bar, it can also be used in harsh industrial condi- tions. In order to cover a wide range of applications the housing, nozzles and axle are made of high quality steel and the impeller is made of PVDF. Mechanical connec- tion is provided by means of either a G thread or an NPT thread. The DTK rotating vane flow meter is used in low vis- cosity and non-conductive liquids and in applications ranging from volume dosing with external electronics, to laundry machines and PCB manufacturing machines, and agriculture, among others. Enquiries: Instrotech.Tel. +27 (0)10 595 1831 or email: sales@instrotech.co.za

Kobold’s DTK rotating vane flow meter for low vol- ume flow measurement applications is available from Instrotech. A versatile, efficient and eco- nomical piece of equipment, this flow meter was specially developed for use in low viscos- ity liquids. Its compact construction means it can be used in machines with restricted space as well as in industrial systems. Key advantages are its robust construction and long-term stability.

In the DTK flow meter, the medium flows through a formed flow casing, causing the impeller to rotate. Two magnets on the impeller gener- ate electrical impulses in a

Hall sensor. The frequen- cy emitted by the elec- tronics is then directly proportionate to the flow velocity. Down-

The Kobold DTK rotating vane flow meter is designed for low volume flow measurement.

24 Electricity + Control

APRIL 2019