Thermal dissipation principle mass flow rate meter instrumentation for measuring the quantity of mass that has transferred over a period of time.
A thermal mass flow meter uses heaters and temperature sensors to measure how much heat is absorb by the flow. The more flow there is, the more heat will be absorbed.
Since the amount of heat absorbed will also be dependent on the density of the substance, there is no need to correct for changes in temperature and pressure, because the measured mass flow rate will track with any change in density.
A mass flow meter is an instrument which can measure either directly or indirectly the mass of a substance which is passing through a specific location in a set period of time.
Mass flow meters can provide an instantaneous analogue, digital or pulse output of the mass flow rate.
A mass flow meter may also include additional electronics such as a digital indicator for displaying the total mass measured to date.