“…The capacitive method [3][4][5][6], electrostatic method [7], electromagnetic method [8], optical method [9], acoustic method [10,11] and radiometric method [6,12] are volume-dependent ones. The Coriolis method [13], pressure drop method [6,14], gravimetric method [15,16], and thermal method [17][18][19] belong to the mass-dependent category.…”