piston meter

piston meter

[′pis·tən ¦mēd·ər]
(engineering)
A variable-area, constant-head fluid-flow meter in which the position of the piston, moved by the buoyant force of the liquid, indicates the flow rate. Also known as piston-type area meter.
References in periodicals archive ?
A one-piece, stainless steel piston meters gas; no seals, rings, springs, or valves.
Lot 1 - supply of HWZ ring piston meters Qn 2,5 mA / h, and Q3 = 4 mA / h
A Losteilung the individual types of counters provided as follows Lot 1 - supply of HWZ ring piston meters Qn 2.