https://www.epa.gov/emc/method-2f-flow-rate-measurement-3-d-probe
Method 2F - Flow Rate Measurement with 3-D Probe | US EPA
Jul 3, 2025 - CFR Promulgated Test Method 2F Determination of Stack Gas Velocity and Volumetric Flow Rate With Three-Dimensional Probes
flow rate measurement3 dmethod2f