daPa – Dekapascal Pressure Unit Find conversions for the daPa (dekapascal) pressure unit. What is 250 daPa What pressure doe the value 250 daPa represent? da = deka = x10 Pa = Pascal Therefore 250 daPa = 2500 Pa = 2.5 mbar Featured pa - pascal based unit range pressure measurement products 3000 pascal range data-logging manometer for use on air handling systems 0 to -2000 Pa vacuum transmitter 1000 kPa g range natural gas 4-20mA output pressure sensor and switch 20 pascal differential pressure transducer for clean rooms