#worksheet

A coil of clear tubing, a plain metal bowl and an unlabeled regulator on a gray bench

Compressed Air Leak Detection: Ultrasonic Survey Physics, FRL Unit Leak Points, and Orifice ROI

Compressed air leak detection engineering guide: 38–42 kHz ultrasonic probes vs. MEMS acoustic cameras, choked orifice SCFM and USD/yr ROI tables, and FRL unit leak points.

Updated October 2026

A blank plan for a compressed-air leak survey

Tag, record, repair and check again. Two flow cells are quoted from a 2004 public tip sheet. Estimate the orifice before you copy a flow.

Updated October 2026