LEAKLAB · TESTING AND ENGINEERING
Chamber testing evaluates total leakage using helium mass-spectrometer detection and a defined preparation and measurement cycle.
Test arrangement
Products are assessed in a chamber with mass-spectrometric registration of helium. Depending on the object, the programme provides access to its cavity or introduces tracer gas before measurement. Preparation, tracer loading, transfer delay and measurement sequence are considered together.
Conditions that affect the result
For hermetically sealed products, gross leaks, gas loss before measurement and material permeation can influence interpretation. The programme identifies the applicable method edition and the relevant preparation route. A chamber result is an integral assessment and does not by itself locate an individual defect.
The chamber, fixtures and detector are verified in the working arrangement. Background, reference-leak response, response time, tracer-gas concentration and the acceptance decision are documented.
Preparing and verifying the test
- Review the drawing, materials, internal volumes, test boundary and required result.
- Agree the document edition, allowable pressure difference, vacuum and temperature, acceptance criterion and required system sensitivity.
- Clean and dry the object, prepare fixtures and exclude leakage from the test connections.
- Check instrument metrological status and the working characteristics of the complete arrangement; use an appropriate reference response for the selected method.
- Perform the agreed scan or measurement cycle and record the actual conditions. Confirm suspected leaks by repeat tracer-gas exposure where applicable.
- Check system stability after the test and report the result against the agreed criterion.
What the customer receives
The agreed scope can include a test programme, operating or inspection instructions, measured results, a map of located leaks and a technical conclusion. The report identifies the object and tested regions, applicable programme, instruments and metrological status, pressure and temperature, response checks, observations and limitations.
Define your task
Send a drawing or sketch, material, dimensions and volume, working pressure, allowable vacuum and temperature, leak-tightness requirement, number of items, site and schedule. These inputs determine the method, fixture, equipment and reporting scope.
Discuss a test programme