Profile: Sierra Instruments, Inc. is a manufacturer of high performance mass flow meters and mass flow controllers for any gas, liquid, or steam applications. We provide natural gas flow meters, mass air flow meters, water flow meters, and oxygen flow meters. We are specialized in primary standard NIST traceable calibration, repair, and field services for mass flow meters and mass flow controllers. We offer innovative, high quality flow meters and services. Our thermal mass, transit-time ultrasonic, vortex shedding and multivariable flow meters are available in both standard and customized versions for applications in laboratory, industrial, and hazardous environments. We offer technologies to precisely measure or control very low flows down to less than 1 sccm full scale as well as extremely high flows of gas, liquid, and steam with rugged product design & cutting-edge innovation. We provide services all over the world.