Sierra Instruments

Sierra Instruments

Sierra Instruments is a US-based manufacturer specializing in precision mass flow measurement and control technology. Founded in 1973, the company designs and produces thermal mass flow meters, mass flow controllers, and insertion flow meters for accurate measurement of gases and liquids across a wide range of industrial and scientific applications. Their SmartTrak product series combines digital intelligence with thermal mass flow sensing to deliver multi-gas capability, high accuracy, and field-programmable performance in a compact form factor.

Sierra's instruments are engineered for demanding environments, from clean room semiconductor fabrication to harsh industrial process lines, with configurations covering a broad range of gas types, flow ranges, and process pressures. Their controllers support digital communications via RS-232, RS-485, and analog I/O, integrating readily into automated test and process control systems.

Key Product Lines

• SmartTrak Mass Flow Controllers — digital, multi-gas capable controllers for laboratory and industrial gas delivery
• Thermal Mass Flow Meters — insertion and inline meters for gas flow measurement without moving parts
• Coriolis Flow Meters — for high-accuracy liquid and gas mass flow measurement independent of fluid properties

Industries Served

Sierra Instruments equipment is used in semiconductor fabrication, biotechnology and pharmaceutical manufacturing, environmental monitoring, industrial gas distribution, chemical processing, and university and government research laboratories where precise, repeatable gas flow measurement is critical to process quality and regulatory compliance.