2. Pneumatic comparators
2.1 Measuring principle
2.1.1 Water column reading system
A manometric column is used to regulate a reference measuring pressure with the utmost precision (figure 5). This pressure is fed into a chamber via a reference nozzle, to which a measuring pressure column and measuring nozzle are connected. Depending on the air leakage at the measuring nozzle, the pressure in the chamber assumes a value ΔP lower than the reference...
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Pneumatic comparators
Microwave sensors
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