Sierra is one of the most trusted manufacturers of high performance flow meters and controllers today. By combining superior product quality with a talented global network of flow experts, we consistently deliver the best flow measurement solution for our customer. Our Thermal Mass, Transit-Time Ultrasonic, Vortex Shedding and Multivariable instruments are available in both standard and customized versions for applications in laboratory, industrial and hazardous environments. Sierra’s flow measurement technologies precisely measure or control very low flows of gas down to less than 1 sccm full scale as well as extremely high flows of gas, liquid, and steam.