Accuracy Never Before Possible.

By harnessing over 40 years of hard-nosed dedication to excellence in innovation and expertise in thermal dispersion measurement technology, our founder Dr. John Olin PhD and our engineering team, have engineered the QuadraTherm 640i/780i to exceed accuracies of +/- 0.5% of reading*, making them the world’s most accurate thermal mass flow meters on the market.

*Verified by an independent NIST & NVLAP accredited metrology laboratory.

Watch Video: Dr. Olin Tells the Invention Story