Thermal Instrument Company

At Thermal Instrument Co., we specialize in designing and manufacturing high-performance flow meters that deliver accurate and reliable measurement across a wide range of applications. For decades, we’ve focused on building thermal mass flow meters that stand up to the toughest process conditions—whether it’s extreme temperatures, high pressures, or corrosive environments. Our meters are engineered to measure gases and liquids with precision, providing direct mass flow readings without the need for additional pressure or temperature compensation.

We take pride in offering customized solutions that fit seamlessly into our customers’ systems. From inline to insertion-style configurations, we build every flow meter with durability and longevity in mind. Our all-metal construction, no-moving-parts design, and advanced sensor technology ensure minimal maintenance and maximum uptime in the field. We serve industries ranging from oil and gas to pharmaceuticals, food processing, wastewater treatment, and more, helping operators monitor, control, and optimize their flow processes with confidence.

Backed by a commitment to quality, innovation, and customer support, we continue to push the boundaries of thermal mass flow measurement, offering American-made instruments that meet the highest standards of performance and reliability.