Calculation For Isokinetic Sampling

Isokinetic Variation Calculator

Ts (Sampling Temperature in °R): Vm(std) (Standard Volume of Gas Sampled in ft³): Pstd (Standard Pressure in in Hg): Tstd (Standard Temperature in °R, usually 528): Vs (Stack Gas Velocity in ft/min): θ (Nozzle Rotation Time in minutes): An (Nozzle Cross Sectional Area in ft²): Ps (Stack Absolute Pressure in in Hg): BD (Dry Gas Volume Correction Factor):

Note: For valid sampling, the isokinetic percentage should be between 90% and 110%.