Sierra Instruments
About
Sierra Instruments, headquartered in Monterey, California, designs and manufactures precision flow measurement and control instrumentation for gas, liquid, and steam applications. A division of TASI Measurement with ISO 9001:2015 certification and over 20 sensor technology patents, Sierra's thermal mass flow meter line includes the QuadraTherm 640i insertion meter delivering ±0.5% of reading accuracy above 50% of calibrated full scale — featuring the DrySense™ sensor with lifetime warranty and qMix™ gas mixing capability for field configuration. The BioTrak 645i (insertion) and 745i (inline) models are specifically engineered for wastewater and biogas applications, while the PowerMass TM500 and AdvantageMass TM100 serve general industrial flow measurement. Sierra also produces vortex flow meters (InnovaMass® 241S), ultrasonic flow meters (InnoSonic line), and mass flow controllers (SmartTrak® 100, RedySmart™, RedyCompact™) for semiconductor, pharmaceutical, and research applications. The company provides NIST-traceable primary standard calibration, field services, OEM custom solutions, and same-day shipment for in-stock items. Applications span wastewater treatment, biogas and emissions monitoring, chemical processing, district heating, geothermal energy, and food and beverage manufacturing across North America, Europe, and Asia-Pacific.
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