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Have you been in the market for a product that allows you to both measure and regulate flow rates? Liquid flow controllers can be used to measure and control flow rates of various types of liquid-based samples.

Liquid flow controllers will typically be used in applications that require a constant flow rate and can compensate for varying pressure changes. Because of this functionality, you may find that liquid flow controllers will cost more when compared to a liquid flow meter that will typically only measure flow rates. However, the benefits could prove incredibly valuable for your application.

Continue reading to learn more about how these products function, some key benefits and examples of applications. We’ll also dive in to how McMillan’s own IRIDIUM Series Liquid Flow Control System can help those considering a liquid flow controller.

How Does a Flow Controller Function?

Liquid flow controllers utilize an integrated flow rate sensor and control valve to regulate flow rate regardless of inlet pressure fluctuations.

With the IRIDIUM Series Liquid Flow Control System, operators have the option to assign a setpoint via a touchscreen monitor located on the device or remotely via an electronic signal. Based on the desired flow rate, the flow controller will adjust the integrated valve as needed.

With the integrated touchscreen, users can see flow rates, totalized flow, alarm states and more. This feature allows users to operate flow controller from various positions and settings.

Key Benefits of Liquid Flow Controllers

As previously mentioned, one of the key benefits of implementing a liquid flow controller is that they automatically compensate for changes in various pressure settings based on a command signal (or setpoint) given from the operator. This compensation allows for a more controlled and stable flow rate.

Another important benefit of liquid flow controllers is their high accuracy and repeatability. The IRIDIUM Series Liquid Flow Control System offers repeatable flow measurement due to the use of a miniature PTFE microturbine wheel which is suspended on a sapphire shaft. An infrared beam detects the rotation speed. This zero-friction design provides fast response and no particle generation.

Depending on the liquid flow sample that you’ll need to use in your application, having a liquid flow controller that is compatible with various types of fluids is key. The IRIDIUM Series Liquid Flow Control System comes with wetted materials of only PTFE, sapphire and Viton (Kalrez optional) to ensure compatibility.

A great liquid flow controller will be dependable, reliable and field-serviceable. In the case of the IRIDIUM Series liquid flow controller, its modular design allows operators to swap modules or change a fitting type in the field with no need to return to the factory. Users can use one flow controller for multiple ranges and configurations.

Liquid Flow Controller Applications

Liquid flow controllers will typically be utilized for applications that require micro to low flow rate measurements and control and are used in cases in which there is a constant flow rate. Liquid flow controllers are also primarily used in the semiconductor industry.

McMillan’s IRIDIUM Series Liquid Flow Control System can be used for various applications such as:

  • On-demand chemical dilution and blending
  • Sample flow rate regulation
  • Consumable usage monitoring and regulation

As you can see, liquid flow controllers can be an excellent choice for those who need a product to measure and regulate flow rates. They come with various benefits including automated compensation for pressure changes, the ability to operate via touchscreen or remotely and versatile use across various applications.

If you’re in need of a liquid flow device, take a look at McMillan’s line of liquid lab flow products.