Helium is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas with the tee symbol He and atomic number 2. It is the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements and has no melting point at standard pressure.
Helium (as well as argon and hydrogen) can be used in heat treatment, and measurement is required. Thermal Mass Flow Meters have a fast response and turndown to help control the proper mixture for heat treatment. Helium is also a coolant for reactor vessels, and a thermal mass flow meter can measure its flow rate.