Fluid Components International LLC. (FCI)

Fluid Components International solves flow and level measurement applications for industrial process and plant applications using patented thermal dispersion flow measurement technologies; With more than 40 years experience and the world’s largest installed base of thermal dispersion instruments, you can count on FCI to know your application and have proven solutions that will save you time and expense. FCI was founded in 1964 in Canoga Park, California area. In 1980, we relocated our corporate and manufacturing facility to San Marcos, California (near San Diego). In order to support our increasing international customer base, we opened our European Sales and Service Center in the Netherlands in 1993.

Company details

1755 La Costa Meadows Drive , San Marcos , California 92078 USA

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Our Distributors

Business Type:
Industry Type:
Monitoring and Testing - Water Monitoring and Testing
Market Focus:
Globally (various continents)


In January 2003, FCI added the coveted AS9000 certificate to our certifications portfolio . Our design, manufacturing and calibration systems, processes and facilities are continuously reviewed, audited and accepted by the major industry leaders.

Our Industrial Division provides flow, liquid level, interface and temperature sensors utilizing thermal dispersion flow measurement technologies.

Our world-class Flow and Level Calibration Facility is continually being improved, expanded and upgraded to meet our customer's increasing requirements.

FCI products deliver accuracy and reliability to the world's most demanding processes and industries including chemical, oil and gas, power and energy, water and wastewater, pharmaceutical, pulp and paper, nuclear power, aerospace,  and many more. Where product pedigree and instrument reliability cannot be left to chance, FCI offers the most reliable selection of non-moving part sensing solutions from off-the-shelf devices to custom engineered systems.