Showing posts with label Equilibar. Show all posts
Showing posts with label Equilibar. Show all posts

Swanson Flo: The Low Flow Experts

Low Flow Experts

It's challenging to apply low-flow meters and control valves to monitor and control extremely low flow rates. Many industries depend on low-flow measurement and control to maintain correct liquid flow rates in batching, water separation, paint circulation, fuel metering, and chemical injection operations. 

Low-flow meters are used in chemical injection systems to determine the correct quantity of chemicals delivered to a process. Chemical dosage accuracy is crucial for efficiency and production. Adding too much chemical leads to increased expenses, while underdosing may result in premature maintenance and poor process outcomes.

Because of the modest, incremental liquid flow measurement, low-flow measurement brings about unique issues. Users must be aware of potential factors that might impair flowmeter performance and longevity, such as noise, vibration, resolution, accuracy, blockage, leakage, K factor, and pressure, and how to deal with them. Swanson Flo, fortunately, offers expertise and a wide range of low-flow meters and control valves. 

Low-flow valves and controls are essential for guaranteeing cost-effective and efficient process operation. Swanson Flo Sales Engineers have years of experience dealing with the most challenging low-flow applications. To discuss your low flow demand, please contact Swanson now using the form below or by calling 800-288-7926.

Swanson Flo
800-288-7926

Demonstration of Ultra Low Flow Control Loop Combining the Equilibar Precision Valve and the Bronkhorst Mini CORI-FLOW™ Meter


This video shows an ultra-low flow control closed-loop incorporating the Equilibar precision flow control valve with the Bronkhorst mini CORI-FLOW™ series and built-in PID software. The flow rate is adjustable from 0 to 1000 ml/hour, and the system controls flow at a rate of less than one cc per minute.

The mini CORI-FLOW™ sends a 0 to 5 VDC drive signal to an Equilibar QPV electronic pressure regulator, which converts the signal to a pilot pressure for the Equilibar FDO4 valve. The CORI-FLOW monitors the flow rate with its built-in Coriolis flow sensor. The internal PID loop adjusts the signal to the electronic pressure regulator, adjusting the pilot pressure to the FDO4 control valve and changing the flow rate.

The CORI-FLOW™ flowmeter integrates the control software, and a PC or PLC is not required (one shown in the video for demonstration purposes.) The CORI-FLOW™ connects via the Bronkhorst DDE and FlowPlot software (available as a download) to view the live data on the laptop screen. FlowPlot allows the user to adjust the PID control loop and modify various other loop parameters. 

This demonstration uses a calibration of 0 to 1 liter per hour full scale. By leveraging the wide turndown ratio of the Equilibar FDO4 sanitary flow control valve, this setup allows for well over 100:1 flow turndown ratio. This control system is excellent for product blending or mixing applications or injection into bioreactors in biopharmaceutical process applications.


For more information about low flow and ultra-low flow control applications, contact Swanson Flo. Call 800-288-7926 or visit https://swansonflo.com.