Nutating disc Flow Meter
Features
Positive displacement meter.
Magnetic coupling.
Wide flow range.
The meter chamber includes disc, positioning bar and transmission magnet.
Low pressure loss and low weight.
Easily maintained without removing from line.
Durable components for minimal maintenance.
Wide range of compatible accessories.
Typical applications
Compatible with many liquids.
Clean and moderately dirty liquids.
Hard and soft water, oils, fuel and solvents.
Operating Data
Nominal Pressure (PN): 16 bar.
Max. Operating Pressure: 150 psi.
Working principle
The metering principle, known as positive displacement, is based on the continuous filling and discharging of the measuring chamber. Controlled clearances between the disc and the chamber provide precise measurement of each volume cycle. As the disc nutates, the center spindle rotates a magnet. The movement of the magnet is sensed through the meter wall by a follower magnet or by various sensors. Each revolution of the magnet is equivalent to a fixed volume of fluid, which is converted to any engineering unit of measure for totalization, indication or process control.
Liquid flowing through the meter chamber (A) causes a disc (B) to nutate or wobble. This motion, in turn, results in the rotation of a spindle (C) and drive magnet (D). Rotation is transmitted through the wall of the meter to a second magnet (E) or varied style of sensor pickup.
