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 ?
Low flow rates pass through the disc or piston meter section only, until the maximum capacity is reached, at which time the valve opens and the higher flow rates are measured through the turbine section.
Oscillating piston meters are used for residential service in sizes up to 1 in.
A one-piece, stainless steel piston meters gas; no seals, rings, springs, or valves.
Oscillating piston meters are manufactured by Kent Meters, Inc.
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.