Sierra Instruments, Inc.

We design and manufacture high-performance thermal mass flow controllers, immersible thermal mass flowmeters, vortex flow meters and transit-time ultrasonic flow meters for nearly every gas, liquid, or steam application. For Monterey-based Sierra Instruments, 50 years marks the beginning of a new era of global innovation in precision flow measurement where truth prevails as a driving force. Today, Sierra flow meters regulate greenhouse gases, convert waste to energy, and deliver life-saving vaccines. They control industrial processes and help create silicon chips that enable our everyday life.