Sierra Instruments will offer lifetime warranty coverage for the Dry-Sense™ sensors in all Sierra Immersible Mass Flow Meters. Sierra offers the lifetime warranty on all Dry-Sense™ sensors in the Sierra Model 640S, 670S and 780S (non UHP) Immersible Thermal Mass Flow Meters sold after 1 January 2010.

Sierra uses a proprietary manufacturing process and patented design that uses no organics, and thus is “dry”. As a result, Sierra’s Dry-Sense™ sensors don’t drift over time, and thereby hold their original calibration.