The calibratable pressure sensors PREMASGARD® 1161 and PREMASREG® 1160 are used for measuring above-atmospheric, below-atmospheric, or differential pressures in air for volume flow rate indication. The piezo-resistive measuring element guarantees a high degree of reliability and accuracy. These pressure sensors are used in clean rooms, medical and filter technology, ventilation and air conditioning ducts, in spray booths, large-scale catering facilities, for monitoring filters and measuring levels, or for triggering frequency converters. The medium measured is air (non-precipitating) or gaseous, non-aggressive, non-combustible media.