The BiRotor meter is a positive
displacement volume flowmeter, which uses two finely balanced
contra-rotating rotors driven by the liquid flow, sweeping a defined
volume of fluid with each rotation. BiRotor meters are used in the
most demanding applications in the petroleum industry, where
ruggedness, accuracy and long life are important.
Mechanical meters use a gear train to
totalize the liquid throughput on a mechanical totalizer, and cover
size ranges from 1.5” to 16” lines. Electronic P Series meters
use an electronic system to transmit the rotation count away from the
meter, from one or two pick-offs. Available on 3” to 16” lines.
Automatic Pressure Lubricated (APL) units are recommended where the
fluid has low lubricity (propane, butane) or where abrasive particles
are entrained in the flow (crude oil). The BiRotor Plus is a
high accuracy version with +/- 0.10% linearity, recently introduced
for custody transfer applications in 3” and 4” lines. The axial
flow BiRotor is a light weight compact design for 4” and 6” lines.
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