View Cart (0 items)

FCI-Fluid Components International

Company Profile


Contact Information

Contact: Mary Pund
Phone: 800-854-1993


FCI-Fluid Components International
1755 La Costa Meadows Dr.
San Marcos CA 92078
United States

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. 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.

Request Assistance

Company Brands

Company Category Listings


Flowmeter Optimizes Plant Burner Fuel-to-Air Ratio

The advanced ST75 Air/Gas Flow Meter from Fluid Components International (FCI), which measures fuel gas, process gas, inert gas, waste gases and air in small line sizes, is ideal for optimizing the fuel-to-air ratio for plant burner-boiler control, reducing plant fuel costs while protecting the environment
Read More

Effective, Economical Nitrogen Tank Blanketing Achieved With FCI Thermal Mass Flow Meters

Process engineers in search of a flow measurement solution to support accurate, safe and economical nitrogen tank blanketing operations will find the ST Series Family of Flow Meters from Fluid Components International (FCI) provides a wide range of choices designed to accommodate various tank and line sizes.
Read More

Thermal Mass Flowmeters for Economical Tank Blanketing

FCI’s mass flowmeters are calibrated to specific gases such as nitrogen for superior accuracy in FCI’s NIST-approved Calibration Laboratory.
Read More

FCI Video: The Importance Of Flow Meter Calibration

Accurate calibration of flow meters to the specific fluid and application environment ensures accurate performance. Tour the in-house FCI Flow Calibration Laboratory.
Read More

FCI Video: Flat Panel Flow Conditioning Simplifies Installation

Learn how to increase flow meter accuracy and measurement repeatability in turbulent pipeline flows with an advanced flow conditioning technology featuring a unique panel design.
Read More

FCI Video: Process Analyzer Fluid Sample Monitoring Ensures Accurate Data

Even the most sophisticated Process Analyzer Systems can't operate effectively without a proper fluid or gas sample. Learn how to avoid this problem with a new sample monitoring solution from FCI.
Read More

New Products

Aeration Flowmeter with Profibus Bus PA

Wastewater treatment plant engineers searching for a solution to flow measurement in aeration basins that is Profibus PA compatible will find Fluid Components International’s precision ST100 Thermal Mass Flow Meter provides superior accuracy combined with digital bus communication flexibility to reduce air flow energy costs.
Read More

Accurate Air/Gas Measurement In Large Pipes & Ducts

The future-ready ST102A Air/Gas Thermal Mass Flow Meter from Fluid Components International (FCI) features an advanced dual-element averaging system.

Read More

Analyzer Flow Switch/Monitor

The Model FS10A Analyzer Flow Switch/Monitor from Fluid Components International (FCI) ensures flow to water or gas sampling systems or analyzers.
Read More

White Papers

Seven Tips To Cut Wastewater Aeration Energy Costs With Thermal Mass Flow Meters

One of the biggest expenses in wastewater treatment operations is the cost of energy to run the blowers and compressors that produce air for the aeration basins.
Read More

Measuring Methane-Based Digester Gas Flow In Wastewater Treatment Plants

Wastewater treatment digester gas systems, as well as other biogas applications such as landfills, are challenged by wide flow variations, dirty and wet gas, and a potentially explosive gas.
Read More

Advances in Thermal Dispersion Mass Flow Meter Accuracy

Thermal flow measuring technology has advanced through the years, necessitating the need for improved calibration methodologies for flow meters.
Read More

Digester Biogas Flow Measurement

Find out how the engineers at a municipal wastewater treatment utility expanded their biogas digester system and sought an improvement over their existing, maintenance-intensive flow metering technology.
Read More


FLT93 as Interface Device

FCI’s FLT93 Series are the most popularly installed heavy duty thermal dispersion flow and level switches in the world. The reasons are simple.
Read More

FCI VeriCal In-Situ Calibration Sensor Installation and VeriCal Procedure Demonstration

FCI's VeriCal In-Situ calibration verification system provides you the ability to perform periodic field validation and verification of your FCI flow meter's measuring performance without extracting the meter from the pipe or process. .
Read More
Back to Listings