Clippard touts flow controller with high resolution and repeatability in a closed-loop system

Clippard’s Cordis flow controller [Image courtesy of Clippard]

Clippard recently announced the release of its Cordis flow controller, which uses a MEMS technology sensor upstream from a proportional valve.

There’s also an option for a DR-2 regulator to provide accurate and precise pressure control in a small package.

Said Clippard: “Unlike other mass flow controllers that require a 30-minute warm-up time, large differential pressures, and limited flow ranges, the Cordis requires less than one-minute warm-up, its pressure drop is ≤14 in. H2O, and it features flow ranges as low as 0 to 30 sccm. Standard control options include 0.2 to 10 Vdc, 4.32 to 20 mA, and 3.3 Vdc serial. The Cordis flow controller is adaptable to a variety of sensors that can close the loop around flow.”

Here are more details:

50:1 turndown ratio Compact size and weight ≤14 in. H2O pressure drop <…
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When a valve is cycled, one can observe the quality of control by measuring and graphing the flow leaving the valve and the input operating the valve, such as electrical current (for coil controlled valves) or steps (for stepper motor controlled valves). This paper will discuss the characteristics of a valve’s performance curve—specifically, where flow begins and how the curve’s trend can indicate certain valve features and their consequences.

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