Hydrotechnik
Macnaught Positive Displacement Flowmeters

Operating Principle
M-Series flow meters are based on the proven oval rotor principle, ensuring high accuracy and repeatability. Precision engineering eliminates pockets in which liquid can stagnate within the measuring chamber of the flow meter.
A pair of intermeshing ellipsoidal gears rotate on shafts and sweep the chamber. Each rotation measures a small volume of trapped liquid, independent of viscosity or density. Magnets located in the gears enable each rotation to be picked up by reed switches or hall sensors located in a secondary chamber within the meter body. A nominal pulses per litre value is arrived at in this way.
Each meter is individually tested to ensure that it performs within calibration parameters. The results are detailed on the NATA traceable certificate which accompanies each flow meter.

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HAMALL PROCESS INSTRUMENTS, DEVONPARK MILLS, ALEXANDRA STREET, TILLICOULTRY, CLACKMANNANSHIRE, SCOTLAND, UK. FK13 6HP
TEL NO : 44 (0)1259 753753 FAX NO : 44 (0)1259 752770
sales@hamall.co.uk