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 1000 pascal bidirectional range dry gas pressure transmitter Low range ATEX approved 100 Pascal range DP transmitter Minus 10 pascal vacuum pressure transmitter Leak testing at 0.5 bar to detect 200 Pascal pressure drop