Bowman Industry and Manufacturing’s Flow Controllers use advanced materials, pressure based sensors with unique and wide ranging LFE (laminar flow element) assemblies and embedded proportional valves. The BI-3000 series of flow controllers ranges from less than 2 sccm (standard cubic centimeters per minute) mass flow to 30 SLPM (Standard Liters per Minute). Both can re re-ranged in the field or by the factory (See Re-ranging).
The BI-4000 series of Gas Volumetric Flow Controllers provide +/-1% full scale accuracy and 0.5% precision, controlling all traditional inert gases and most aggressive gases. The BI-4000 series of flow controllers ranges from less than 2 ccm (cubic centimeters per minute) to 30 LPM (Liters per Minute). Both can re re-ranged in the field or by the factory (See Re-ranging).