The product enters the meter through the inlet manifold and causes the rotor to revolve by pressure on the blades. The proximity of the rotor to the casing forms an efficient seal, whilst the profile of the casing ensures that the blades are guided through the measuring crescent.
The vane blades divide the liquid into segments, the liquid segments are counted as they are displaced, giving a positive rotary motion to the rotor.
The rotor spindle transmits the drive through a pressure tight lip seal in the meter front cover to the calibrating mechanism, which calibrates the meter output for a correct counter readout.
Type |
Positive displacement rotary vane |
Size |
40 mm NB 50 mm NB |
Flow Range |
35 to 350 lpm (40 mm NB) 45 to 450 lpm (50 mm NB) |
(Maximum flow rate can be uprated by 30% for aircraft refuelling with ATF) |
|
Meter Hand of Discharge (when facing the counter) |
Right hand entry left hand delivery Left hand entry, right hand delivery |
Drive |
Positive gear train |
Counter |
Mechanical - 5 digit reset, 8 digit non-reset totaliser, weather-proof Veeder Root 7887 Electronic - 5 digit reset, 8 digit non-reset totaliser, flame-proof |
Accuracy |
Better than ±0.10% (In accordance with IS:2801) |
Repeatability |
Better than ±0.02% |
Rangeability |
100% to 10% of max. flow range |
Maximum Working Pressure |
10.54 kg/cm2 |
Temperature : |
Upto 70°C (Standard) Upto 200°C (Special) |
Viscosity : |
0.5 CST to 200 CST |
(Consult factory, for liquid viscosity above 200 CST) |