Centrifugal Fans direct driven with scroll - Nicotra Gebhardt
Centrifugal Fans direct driven with scroll - Nicotra Gebhardt
Centrifugal Fans direct driven with scroll - Nicotra Gebhardt
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Fittings / Accessories<br />
Volumeter<br />
p in<br />
p in<br />
2<br />
qV = K × —<br />
<br />
× pDü Direct <strong>driven</strong> centrifugal fans / RZA / Accessories<br />
With the flow measuring device it is possible to easilymeasure / monitor the flow rate<br />
after the fan is installed. A pressure tapping at a predetermined position on the inlet<br />
cone is provided whereby the differential pressure in relation to the static pressure is<br />
measured in front ofthe inlet cone in a static atmosphere.<br />
• volume flow qV<br />
[m³/h]<br />
• calibration factor K [m²s/h]<br />
• density of media r [kg/m³]<br />
• pressure difference at cone DpDü [Pa]<br />
In order to calculate the flow rate, a calibrating factor "K" is required. This factor is<br />
determined by comparativemeasurement on a standard test rig.<br />
•<br />
•<br />
•<br />
Measuring connector in inlet cone<br />
Hose pipe to connecting piece in the side wall<br />
Connecting piece (external diameter of 6mm) for the pressure measurement<br />
Standard-calibration faktor K10
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