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Fox Thermal Mass Flow Meters. Non-stop Performance.

Fox Thermal Mass Flow Meters.
Non-stop Performance.

Top Applications

Renewable energy production facility
Monitor Hydrogen Gas and Gas Blends
Fox Thermal mass flow meters offer solutions in hydrogen and hydrogen gas blend applications.

Accurate flow meters for flare gas measurement
Flare Gas for Quad O and Subpart W
Monitoring flare gas for Quad O and Subpart W is required. Do it better with a Fox flow meter.

Get expert support for your thermal mass flow meter
Gas Compressors for Quad O
Are you ready for the changes coming in OOOOb/c? Get a flow meter that makes monitoring and reporting easier.

Explore Fox Thermal thermal mass flow meter uses by application type
Search by Application
Fox Thermal mass flow meters offer solutions in Oil & Gas, Industrial, Biogas, and Wastewater applications.

Compare thermal mass flow meters by model type
Configure Meter
Enter process data and flow meter requirements into our product configurator for faster service.

Get expert support for your thermal mass flow meter
Expert Support
Talk to our expert application engineers or customer service representatives to get the answers you need.

The Digital Difference

| Dedicated | Honest | Passionate |

Fox Thermal brings the Digital Difference because we are the only thermal gas mass flow meter manufacturer with digital sensor technology. The DDC-Sensor™ is like no other flow sensor available on the market today. This direct digitally controlled sensor is interfaced directly to the meter's microprocessor for more speed and programmability. This revolutionary advancement in the technology has laid the foundation for award-winning and truly innovative thermal flow meter features.

Fox’s unique DDC-Sensor™ provides a technology platform for calculating accurate gas correlations. The correlation algorithms allow the meter to be calibrated on a single gas in the factory while providing the user the ability to select other gases in the Gas-SelectX® gas menu(s). Watch this video to see how our digital thermal flow meters excel.

Asking the right questions for over 25 years.

Interactive Map Click to find your local Rep

Looking for a Rep near you? To view Fox Representative contact information worldwide, simply click on your area of interest.

Latest Fox Video Click below to view on Youtube!

Fox Thermal - Leader in Thermal Mass Flow Technology

Fox Video

Watch this 2 minute video to see how Fox Thermal leads the industry in thermal mass flow today.

Contact Us Fox Thermal is located in sunny Marina, CA
Fox Location

Fox Thermal
399 Reservation Rd.
Marina, CA 93933 USA
Phone: +1 (831) 384-4300
General Fax: +1 (831) 384-4312
Accounting Fax: +1 (831) 384-4314

Fox Downloads

New from Fox!

FT4X Datasheet

Download the redesigned Fox Thermal product datasheet for the full product features, product specifications, approvals, and certifications.



If you have already determined which Fox Model is right for your application, click on one of the links below to use a configurator to customize the flow meter for your process conditions, choose features, size it to your specifications, and choose from other available options.

Not sure which meter is right for you? Contact our Application Engineers to find the right model type for your needs.

Customize your meter:

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Asking the right questions
for over 25 years.

About Us

Fox Thermal cares about its products and services. Fox is ISO 9001 Certified, uses NIST traceable equipment for every calibration, and maintains a stringent quality control system in order to ensure that Fox remains the leader in the manufacture of thermal gas mass flow meters for its customers.