Proportional Isolation Valve
Clippard Instrument Laboratory, Cincinnati, OH, has released a flow controller that uses an extremely fast-reacting MEMS technology sensor upstream from a proportional valve, with the option of a DR-2 regulator for accurate and precise pressure control in a small package. 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, and its pressure drop is ≤14 in. H 2O. It features flow ranges as low as 0–30 sccm. Standard control options include 0.2–10 VDC, 4.32–20 mA, and 3.3 VDC serial.
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