Reliable Oval Gear Positive Displacement Flow Technology
The KOBOLD DON Oval Gear Positive Displacement Flow Meter is engineered for high accuracy and reliability in demanding industrial applications. Its heavy-duty oval gear design uses two precision-machined gears that rotate as liquid passes through the meter. Each rotation allows a specific, known volume of fluid to move through, providing a true volumetric flow measurement. This design ensures consistent accuracy regardless of fluctuations in viscosity, flow rate, or pressure.
How Oval Gear Flow Meters Work
The measurement principle is elegantly simple yet highly effective. As the flowing media drives the oval gears, each rotation corresponds to a precise volume of liquid. A magnetic or optical sensor detects the gear movement and converts it into an electronic pulse output proportional to flow rate. Because the DON measures actual fluid displacement rather than velocity, it maintains outstanding accuracy even under challenging conditions that could affect other flow measurement technologies.
This makes the DON Series particularly suitable for high-viscosity fluids, such as oils, adhesives, fuels, and polymers—where turbine or ultrasonic flow meters might struggle.
Ideal for Intermittent and Fluctuating Flow Rates
Unlike many other flow measurement systems, the Oval Gear design performs exceptionally well in applications where flow rates vary or stop and start frequently. Since it measures the volume directly, it is not affected by changes in flow profile or turbulence. This makes it a preferred choice for batching, dosing, and transfer operations where precision is essential despite inconsistent flow conditions.
High-Pressure Options for Demanding Applications
For systems requiring even greater durability and higher process pressures, KOBOLD offers the DON-H High Pressure Oval Gear Flow Meter. This version provides the same rugged performance and accuracy as the standard DON model but is built to withstand extreme pressures, making it ideal for hydraulic, petrochemical, and heavy industrial environments.
Why Choose the KOBOLD DON?
- Accurate across a wide viscosity range
- Excellent performance with fluctuating and intermittent flow
- Rugged construction for industrial use
- Available in standard and high-pressure models
- Minimal maintenance and long service life
To learn more about how Oval Gear Positive Displacement Flow Meters work and their advantages, visit our detailed guide on Positive Displacement Flow Meters or contact us directly for specifications and pricing.