FCI-Fluid Components Intl.

San Marcos, US 92078


About FCI-Fluid Components Intl.


San Marcos, US 92078

More Info on FCI-Fluid Components Intl.

FCI-Fluid Components Intl. manufactures air/gas flowmeters, liquid/gas flow switches and flow conditioners. In both municipal and industrial WWT plants, FCI is the leading supplier in aeration and digester gas flow measurement applications, so you can install with total confidence and assurance that you are getting the right product, backed by FCI’s worldwide service and support.

Products & Press Releases

Utility Management

Air/Gas Flowmeter

Dec. 10, 2019
The ST100 Series thermal mass air/gas flowmeter from Fluid Components International (FCI) has received ATEX and IECEx approvals, assuring FCI’s customers that the ST100 flowmeter...
Product Background_61
Utility Management

Biogas Flowmeter

Oct. 21, 2019
Biogas is a mix of methane, carbon dioxide, water and hydrogen sulfide. It is wet, corrosive and combustible. FCI’s SIL-rated ST51A Biogas Flowmeter provides accurate, repeatable...
Wastewater Treatment

Flow Switch

April 19, 2019
The dual-alarm FLT93 flow switch monitors the flow and temperature of liquids, gases and slurries. It is suitable for pump wet/dry detection. Alarm 1 detects a low flow between...
Utility Management

Digester Gas Flowmeter

Oct. 22, 2018
The ST100 Series thermal flowmeter provides precision mass flow measurement. With its no moving parts, simple insertion-style design, and comprehensive, global HazEx approvals...
Utility Management

SIL 2 Flow Switch

Aug. 16, 2018
The FCI FLT93S insertion-type FlexSwitch for flow and temperature monitoring is SIL 2 rated. It was designed for rugged environments, including wastewater treatment plants. FCI...
Utility Management

Pump Flow Switch/Alarm

Aug. 16, 2018
Pump flow assurance is easy with FCI model FLT93 flow switches. For use with virtually any fluid, FLT93 includes standard features such as dual relay outputs, temperature compensation...
Utility Management

Level Switch

Aug. 9, 2018
The LS2000 level switch provides an economical solution for alarm and limit trip switch applications in process and plant installations. These thermal dispersion technology-based...
Utility Management


Aug. 8, 2018
The Model ST51A flowmeter is an insertion-style instrument designed for use in pipe diameters larger than 2 in. (51 mm); it is optimized for flow measurement of air, compressed...
Utility Management


Aug. 8, 2018
The ST100 Series flowmeter features a plug-in card replacement that can be changed out in the field to adapt to changing communication needs. A graphical, multivariable, backlit...

Flow Switch

Aug. 8, 2018
The FlexSwitch FLT pump protection flow switch improves process control by adding an extra margin of safety. The switch keeps pumps running longer and more reliably with less ...

Articles & News

Utility Management

Water & Wastewater Applications Guide: Specifying Flow Instrumentation in Municipal Applications

May 18, 2022
The new Water & Wastewater Treatment Guide from Fluid Components International (FCI) explains how to optimize flow measurement in 20 different municipal applications to enhance...
Utility Management

Chlorine Flow Measurement

Feb. 26, 2020
Flowmeter enhances chlorination system performance for municipal water department
Wastewater Treatment

Flow Switch Protects Pumps & Extends Service Life

Nov. 7, 2019
FCI's device monitors flows & temperatures in order to extend the life of pumps.
Utility Management

ST80 Thermal Mass Flow Meter Launches With Breakthrough Adaptive Sensing Technology

March 13, 2019
Innovative hybrid sensor drive combine two technologies to deliver superior application performance
Utility Management

Thermal Mass Flowmeter Resists Corrosion in Biogas Environments

Feb. 12, 2019
Instrument includes full safety approvals for precision accuracy & high reliability
Utility Management

Improving Gas-to-Energy Efficiency

April 3, 2018
Wastewater plant relies on thermal flowmeter for cogeneration power gas-blending process
Utility Management

Improved Flowmeter Line Features Digital Bus Communication

Feb. 18, 2018
Products offer accurate flow measurement in a variety of applications
Fig 1. City of St Cloud WWT Plant copy
Utility Management

Co-Gen Flowmeter Helps Wastewater Plant Meet Sustainability Goal

Feb. 13, 2018
Flowmeters enable Minnesota facility to meet energy & sustainability goals
FCI TR Vortab 2
Utility Management

Flow Conditioner Eliminates Swirl for Accurate Measurement

Oct. 15, 2017
Device treats flow stream into flow regime to mimic straight run
Utility Management

Inline Flowmeter Measures Chlorine Without the Need for Straight-Pipe Runs

Oct. 6, 2017
Company technicians perform on-site calibration adjustments prior to installation

Videos & Resources


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

April 21, 2022
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. The figures most...
Wastewater Treatment

Don’t Get Bent Out of Shape Due to Poor Meter Runs

Nov. 16, 2021
Register Here for On-Demand WebinarFact: Piping constraints can lead to inaccuracies in your gas flow measurements. Inaccuracies lead to inefficient processes. Inefficient processes...
Screen Shot 2019-12-05 at 1.42.30 PM

Measuring Methane-Based Digester Gas Flow in Wastewater Treatment Plants

Dec. 5, 2019
Process and plant engineers at municipal wastewater treatment facilities need to measure, monitor and dispose of methane and other digester gases that occur naturally in their...
Screen Shot 2019-09-26 at 1.59.17 PM

Seven Tips to Cut Wastewater Aeration Energy Costs With Thermal Mass Flowmeters

Sept. 26, 2019
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. The figures most...

Money Down the Drain: The High Cost of Poor Air Flow Metering

Sept. 10, 2019
Activated sludge systems have been cornerstones of wastewater treatment for more than 100 years. This biological process uses suspended-growth microorganisms to break down and...
FCI-WWT-Challenges-Biogas-600ppi (2)_0

The Challenges of Combined Heat and Power from Biogas

July 19, 2019
Driven by tight budgets and competing needs for limited CAPEX funds, wastewater treatment plants are increasingly looking to reduce their operating expenses. Many are now referring...

All content from FCI-Fluid Components Intl.


Accurate Gas Flow Measurement Improves Water Disinfection Process Efficiency

June 20, 2019
Many of today’s large urban water treatment plants rely upon sophisticated chlorination processes in order to provide clean, sanitary water to millions of consumers in the US ...

How To Extend the Life of Your Wastewater Pumps

June 18, 2019
Wastewater treatment plants use numerous pumps throughout their processes. Losing a pump to dry running conditions is not only expensive, but risks environmental violations. Learn...
Utility Management

FCI business growth receives award in San Diego County

April 5, 2019
Dan McQueen, president of FCI, discusses the need for clean water as one of FCI’s key product technology development drivers.
Utility Management

How Flow Meter Accuracy Improves With Proper Calibration

March 7, 2019
Take the tour and get an insider’s look at the Calibration Lab at Fluid Components International (FCI). Learn why calibration flow meters in the actual fluid media improves their...
Utility Management

FCI Capabilities

Feb. 13, 2019
Fluid Components International (FCI) solves flow and level measurement applications for industrial process and plant applications using patented thermal dispersion technology....

Protect Your Pump & Keep It Longer

Jan. 31, 2019
In today’s complex and frequently rugged process plant environments, liquid pumps are often overworked and underprotected from adverse operating conditions. Many pumps run nearly...

Ozone Gas Flow Monitoring for Water Treatment Systems

Aug. 16, 2018
Many municipal water treatment plants utilize ozone treatment systems to produce clean water for residential and industrial users. While all the various types of water treatment...

Liquid Level/Interface Monitoring in Flocculant/Sludge Control

Aug. 9, 2018
Flocculants are used in both the treatment of municipal sewage and industrial wastewater. There are many different types of flocculant chemicals and wastewater treatment systems...

Flow Measurement

Aug. 8, 2018
With no moving parts, simple installation and rugged packaging, Fluid Components Intl. offers flowmeter solutions with low maintenance, low installed cost and long service life...