Nutating Disc & Turbine Meters
NUTATING DISC METER
Liquid enters the flow meter through a chamber. Once in the chamber, the liquid encounters a ball with a disc attached. The ball and disc combo are held together and in place by a shaft positioned by a cam or roller. As the liquid flows through the chamber the disc nutates, or wobbles, around an axis. The position of the disc divides the chamber into compartments containing an exact volume. Each fill and empty of the chamber (cycle) corresponds to a fixed amount of fluid. Nutating discs are most often used in feed production, fuel metering, and water metering.
ACCURACY: ± 2% as standard, ± 1% after calibration
DESIGN TYPE: Nutating Disc Positive Displacement
FLOW CAPACITY: 20 LPM to 120 LPM (Dependant on model)
PRESSURE RATING: 50 PSI (3.5 BAR)
CONNECTIONS: 1" BSP/NPT
A turbine flow meters main feature is a rotating turbine. The flow rate is recorded as the turbine rotates and the fluid passes over it. As the fluid rotates the blades it starts the rotor in motion. When the fluid is flowing steadily and a consistent speed is reached it is proportional to the fluids velocity. If a turbine flow meter is digital a blade on the turbine would have a sensor or magnet on it. This would send a pulse to the computer on each rotation.
ACCURACY: ± 1-2% as standard or ± 0.75-1.5% with computer
DESIGN TYPE: Turbine Meter
FLOW CAPACITY: 3.8 LPM to 760 LPM (Dependant on model)
PRESSURE RATING: 300 PSI (21 BAR)
TEMPERATURE RATING: -40°F to 260°F (-40°C to 121°C)
CONNECTIONS: 1/2" to 2" NPT or ISO (Female) BSPT