1973

Dr. John Olin establishes Sierra Instruments in Minnesota

1975

Sierra moves to Carmel Valley, California

1980

Establishes Industrial Instruments Division based on thermal principles

1983

Sells Environmental Instruments Division to Anderson Instruments

1989

Moves to expanded Monterey facility

1994

Introduces patented no-drift DrySense mass velocity sensor

1995

Opens European headquarters (Sierra BV) in Holland

1997

Introduces InnovaMass, world`s first multiparameter Vortex meter

1997

Partners with Caterpillar to make Diesel Exhaust Emissions Partial-flow Sampler

2003

Matthew J. Olin takes over leadership as CEO (Second Generation Succession)

2003

SmartTrak™ Mass Flow Controller launched

2005

Opens Asia headquarters in Shanghai, China

2011

Acquires UK-based CP Engineering for Automotive Test Division Renamed Sierra-CP

2012

Raptor OS introduced for Thermal, Vortex, and Ultrasonic meters

2012

Introduces revolutionary QuadraTherm Thermal Mass Flow Meter

2014

Automotive Test Division builds Honda Formula 1 facility in UK

2017

Launches InnovaSonic Transit-time Ultrasonic Flow Meter

2017

Completes Sierra Loop gas flow calibration facility - most accurate in world

2019

Purchased by Tasi Group

2022

James Earle becomes the General Manager

2023

Celebrate Sierra`s 50 Years in business - Beginning of a new era of innovation

Cell Air Mass Flow Meters for Mining Flotation - Mining

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