The Apex Accu-Flow Measurement System is used for performing EPA Method 2F, 2G and 2H. The system uses a two-dimensional 3-hole prism-shaped pitot or optional 5-hole for 3-D for accurately measuring flow rates for angular non-axial flow. This system provides a way for testers to improve the measurement of volumetric flow rate under cyclonic flow conditions found in some stacks and ducts.
Accu-Flow 2D / 3D Measurement Flow System
Method 2F - Text of Test Method 2F - Flow Rate Measurement with 3-D Probe.
Method 2G - Text of Test Method 2G - Flow Rate Measurement with 2-D Probe.
Method 2H - Text of Test Method 2H - Flow Rate Measurement with Velocity Decay Near Stack Walls.