Velocity Instruments

Accurate determination of the gas velocity is one of the most important measurements in emission monitoring since both sampling rate and total gas flow rate depend on this value. Velocity measurement in a stack is akin to flow measurement as the same is not measured directly but is instead inferred from differential pressure in accordance with Bernoulli’s equation. In stack velocity measurement, the constriction is generally a Pitot Tube.

Our Stack Velocity Meter is a versatile instrument which carries various functions including instrumentation, data processing and user interface to enable the user to carry out the stack gas velocity measurements at various points and under various conditions.