{"publication_id":"OT-2026-000000055","uuid":"01a0a4eb-652e-71a2-88b9-b9197e552426","title":"Differential Pressure Leak Test with Adiabatic Settling Compensation","abstract":"This disclosure describes an arrangement for leak testing sealed components using a differential pressure method that compensates for adiabatic pressure changes. The system employs a test volume and a reference volume, both pressurized simultaneously, and measures their pressure difference over time. By modeling the transient pressure effects caused by adiabatic compression or expansion during the fill phase, the system isolates pressure changes attributable solely to leakage. This compensation mechanism reduces the stabilization time typically required before measurement, thereby optimizing the test cycle while maintaining accuracy in identifying components that meet specified leak rate criteria.","language":"en","published_at":"2026-09-15T11:54:45.424441Z","canonical_url":"https://opentechnical.org/p/OT-2026-000000055","status":"PUBLIC","supersedes":null,"keywords":["differential pressure","leak test","adiabatic settling","pressure decay","thermal compensation","calibrated leak","test volume","pressure sensor","system controller"],"extent":{"words":2684,"paragraphs":18,"figures":2},"hashes":{"canonical_text_sha256":"2455a779326a2c37d7c9df4e20c003bb1f983c1deb9902f6bca875ecfcfadef9","html_sha256":"b777a1a2d38a07d44e051f7041af18a8079f2b49d099c2b6e1475b1e4d314e21","pdf_sha256":"6b64750069678409376b92beda858d68554121e0420e58c142154b5ee3a580e8","markdown_sha256":"7b451fc234308c3c9122482a74e81ce256dc7b771615b17d4ac5975b38a6e9b9","manifest_sha256":"cf8f7dd7e17542b6dbb648c13ee7f72f30a48522dd6543fbaae38a859561f276"},"links":{"html":"https://opentechnical.org/p/OT-2026-000000055","text":"https://opentechnical.org/p/OT-2026-000000055/publication.txt","markdown":"https://opentechnical.org/p/OT-2026-000000055/publication.md","pdf":"https://opentechnical.org/p/OT-2026-000000055/publication.pdf","manifest":"https://opentechnical.org/p/OT-2026-000000055/manifest.json","signature":"https://opentechnical.org/p/OT-2026-000000055/manifest.sig","integrity":"https://opentechnical.org/p/OT-2026-000000055/integrity"},"categories":[{"category_id":"CAT-000000295","path":"manufacturing-assembly-equipment/test-and-inspection/leak-testing","name":"Leak Testing","primary":true},{"category_id":"CAT-000000269","path":"manufacturing-assembly-equipment","name":"Manufacturing & Assembly Equipment","primary":false},{"category_id":"CAT-000000293","path":"manufacturing-assembly-equipment/test-and-inspection","name":"Test and Inspection","primary":false}]}