Multi-transducer pressure measuring device

Claim 1

A SYSTEM FOR CALIBRATING A LARGE NUMBER OF PRESSURE TRANSDUCERS SIMULTANEOUSLY AND FOR MEASURING A PLURALITY OF PRESSURES WITHIN A WIND TUNNEL SIMULTANEOUSLY COMPRISING, A PLURALITY OF PRESSURE TRANSDUCERS, EACH OF SAID TRANSDUCERS HAVING AN ELECTRICAL OUTPUT, A SOURCE OF VACUUM, A SOURCE OF REFERENCE PRESSURE, A PLURALITY OF WIND TUNNEL PRESSURE MEASURING STATIONS, A VACUUM CHAMBER, A FIRST VALVE MEANS FOR ALTERNATELY CONNECTING EACH OF SAID PRESURE TRANSDUCERS TO SAID VACUUM CHAMBER AND TO EACH OF SAID PLURALITY OF RESPECTIVE PRESSURE MEASURING STATIONS, SECOND VALVE MEANS FOR CONNECTING SAID VACUUM CHAMBER TO SAID SOURCE OF VACUUM AND TO SAID SOURCE OF REFERENCE PRESSURE SELECTIVELY WHEREBY SAID PRESSURE TRANSDUCERS MAY BE CALIBRATED SIMULTANEOUSLY AND A LARGE NUMBER OF PRESSURE MAY BE MEASURED SIMULTANEOUSLY.