WIKA A2G-25 - Manual (Page 8)

WIKA operating instructions air2guide model A2G-25
GB
8
40202755.02 07/2012 GB/D/F/E/I
4. Design and function
4. Design and function
Description
Dimensions in mm
The model A2G-25 air flow transmitter is based on the principle of
effective pressure measurement. In effective pressure measurement,
the static pressures in front of and behind the restriction of the inlet
nozzle are compared to each other by means of a differential pressure
gauge. Applying the law of conservation of energy, the effective
pressure (differential pressure of the static pressures) can be assigned
to the volume flow as follows:
In this context, k considers the specific nozzle characteristics of the
ventilator (e.g. Fläkt Woods, Rosenberg, Nicotra, Comferi, Ziehl,
EBM, Gebhard).
Scope of delivery
Cross-check the scope of delivery with the delivery note.