What are the advantages and disadvantages of thermal mass flow meters

Thermal mass flowmeterIt is an instrument that uses the heat exchange relationship between heat transfer principles to measure flow rate. Currently, it can only be used for measuring gases.

Next, I will talk about the advantages and disadvantages of thermal mass flow meters

Advantages: Simple composition, wide range ratio, capable of measuring gases with flow rates ranging from 100Nm/s to 0.5Nm/s, suitable for gas leak detection; Good seismic performance, long service life, and low failure rate; The specific heat capacity of a gas varies with pressure and temperature, with little change in its vicinity; Easy to install and maintain, and can achieve non-stop installation and maintenance when site conditions permit.

Since there are advantages, there must also be disadvantages.

Shortcoming: Due to changes in CP value and thermal conductivity, measurement values may undergo significant variations, resulting in errors; If the measured gas settles on the pipe wall, it will affect the measurement value and has the disadvantage of easy blockage; Thermal mass flow meters for pulsating flow and liquids will be limited in their use for viscous liquids.

The above is a description of the advantages and disadvantages of thermal mass flow meters.