Flexible Solutions. Durable Equipment. Dependable Results

We design and manufacture high-performance thermal mass flow meters for nearly every gas or liquid application.

We have the right solutions

Services done right will have a positive impact on your business. Help us understand you and your business needs so that we can serve you better.




“We placed an order for a rental meter on Friday and it arrived on Monday for our state inspection on Tuesday. Really appreciated the quick delivery and responsiveness.”

Long time Thermal Instrument Customer - using meter for Bio-Gas Application

“We needed flow meters built out of 100% Titanium to hold up to our harsh process. Could not find another supplier that could meet our requirements. Thermal Instrument delivered a customized solution to meet our needs”

Long time Thermal Instrument Customer -

“The meters were installed in 1992 and still work perfectly. They have been here longer than I have been employed here!”

Long Term Thermal Instrument Pharmaceutical Manufacturing Customer in 2018 -

“I like working with you guys because when I call someone picks up the phone or gets right back to me to help me out”

Long time Thermal Instrument Landfill Gas Technician Customer -

“We could not afford to take our operation offline and needed a service trip to re-calibrate our meters. The technician from Thermal Instrument arrived, worked over a weekend, and we never lost any production time”

Long time Thermal Instrument Customer -

We are proud of our work

We design, manufacture, and calibrate thermal mass flow meters and flow switches for a variety of liquid and gas measurement applications. Contact us to see how we can help you solve your measurement challenges.

Latest blog posts

Read more about our latest news posts and be informed.

Central Pacific Controls – New Sales Partner of Thermal Instrument Flow Meter Product Line

Central Pacific Controls (CPC), headquartered in Honolulu, HI, has added the Thermal Instrument Mass Flow Meter line along with their other process controls […]

Innovative Process Controls (IPC) and Thermal Instrument Company provide Sales Coverage in California

Innovative Process Controls (IPC), headquartered in El Segundo, CA, has expanded its sales coverage and can now offer process controls and instrumentation across […]

Thermal Instrument Expands Sales territories with Lesman Instrument, A Kele Company, in Pacific Northwest

Lesman Instrument, headquartered in Bensenville, IL, recently merged with Kele Company of Memphis TN, and has an expanded offering in the process controls […]

Thermal Instrument Expands Sales territories with Trivaco Southeast (TSE)

Trivaco, Tri-State Valves & Controls, headquartered in Hebron, KY, has been a sales partner promoting and supporting the Thermal Instrument product line of […]