An animated video "Precise Gas Flow Measurement: The Sierra Way," describes the operating principle of capillary thermal technology used in gas mass flow controllers from Sierra Instruments Inc., Monterey, Calif.

The three-minute educational video offers an "inside-out" perspective, showing the flow path of gas molecules within the mass flow controller. According to the company, the video illustrates key technology advantages of capillary thermal flow measurement technology.Visit www.sierratechsupport.com to view the video.