Measure and control liquid flows where conventional technologies reach their limits. With CORI-FLOW, you maintain precise control of your process.

Accurate dosing at low flow rates is one of the biggest challenges in liquid process control. Small deviations can affect product quality, process efficiency, safety, and operating costs.

Even small variations can have a significant impact on dosing performance. 

Common causes include:

• Changes in liquid properties
• Temperature variations
• Pressure fluctuations
• Air bubbles and entrained gas
• Pump pulsations
• Mechanical wear
• Very small dosing volumes
• Measurement limitations

At very low flow rates, the measurement signal becomes extremely small, making accurate detection more challenging.

• Reduced sensor signal strength
• Lower signal-to-noise ratio
• Increased influence of pulsations
• Small errors becoming large percentage deviations
• Effects of bubbles and contamination 
• Mechanical friction and stiction

Improving consistency starts with reducing process variation and increasing control over dosing performance. 

Best practices include:

• Measuring instead of estimating
• Implementing closed-loop control
• Controlling critical process variables
• Eliminating air and entrained gas
• Regular maintenance and calibration
• Monitoring process data
• Standardizing operating procedures

There is no single "best" technology for all low-flow liquids. The ideal choice depends on the liquid properties, required accuracy, and flow range. However, for high-accuracy low-flow dosing and measurement, Coriolis flow meters are often considered the gold standard. 

• Coriolis Flow Meters: Suitable for high-accuracy dosing, chemical injection, pharmaceuticals, and laboratory applications. 
• Thermal Flow Meter: Suitable for ultra-low liquid flows where thermal properties are stable. 
• Ultrasonic Flow Meters: Suitable for clean liquids at moderate flow rates.

Batch dosing no longer needs complex parameter tuning. With the integrated FLUIFILL® functionality in Bronkhorst instruments, such as the new CORI-FLOW series, users simply enter the required dose and dosing time. The instrument automatically determines the optimal control settings for the connected pump or valve. The result is fast commissioning, reliable operation, and highly accurate dosing from the very first batch.