ForTest’s differential system enables a “three-dimensional” analysis of the leak, separating the actual leakage from noise and thermal or mechanical phenomena that can alter the measurement. Unlike traditional capacitive transducers, Dual Absolute® technology introduces a precision breakthrough: it correlates the part and reference by isolating, at regular intervals, the spurious variances between the two volumes. What remains is the actual leak value.

Dual Absolute® is a worldwide exclusive by ForTest and is considered one of the few true innovations in leak testing over the last forty years. It is the technology of choice when component sealing cannot tolerate uncertainties: small volumes, elastic materials, complex geometries, thermally unstable cycles. Situations where traditional systems generate false rejects or hide real defects.

ForTest differential air leak test equipment combines this precision with immediate use. Setup is quick, the interface guides the operator, and line implementation requires minimal time. This simplicity is supported by a database of over 10,000 solved applications.