Technical info

Leak Testing Overview

Theory of Leak Test (Master Comparison Method) General Leak Test Stages for Differential Pressure Decay Differential Pressure Decay vs. Straight Pressure Decay Methods Pneumatic Circuits of Cosmo's Air Leak Testers

Equations

Pressure and volume (Boyle's law) Leak Rate Equation K (Ve) (Equivalent internal volume) Equation Effects of Temperature Changes Effects of Seal Movement

General Recommendation For Leak Testing

Seal Inspection Start-up Procedure Periodic Inspection K(Ve) Check

General Troubleshooting Agenda

When consecutive failures occur: If seals look OK: Ngegative failures:

Periodic Inspection Agenda

Theory of Leak Test (Master Comparison Method) General Leak Test Stages for Differential Pressure Decay Differential Pressure Decay vs. Straight Pressure Decay Methods Pneumatic Circuits of Cosmo's Air Leak Testers

Issues With Contamination

Possible Sources of Contamination are: To Check Any Damages to the DPS: Locate the Source: If the Contaminants Came From Parts: After installation of spare tester:

Compensation Features

Auto-Drift Compensation Mastering Compensation (LS-1822 and LS-1842) Auto-Drift Compensation using Mastering value

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