![]() ![]() EN 13625 - Guide to the selection of instrumentation for the measurement of gas leakage.EN 13192 - Calibration of reference leaks for gases.EN 1779 - Criteria for method and technique selection.EN 1518 - Characterization of mass spectrometer leak detectors.Warning: getimagesize(pic/galerie/171(2)) : failed to open stream: No such file or directory in /home/html/atg.cz/public_html/functions.php on line 36īasic EN standards with relationship to LT are Warning: filesize() : stat failed for pic/galerie/171(2) in /home/html/atg.cz/public_html/functions.php on line 33 LT testing in accordance with EN is based on the following standards Methodic requirements for LT testing are established by standards, codes specifications Legal requirements, and customer's requirements. Sensitivity, tested part character (shape, construction, dimensions (volume). The suitable method and technique is determined in accordance with required test helium method - tracer gas method (test medium is He, overpressure, vacuum.penetration method (Liquid penetrant passes through the examined object).bubble method (overpressure, vacuum with vacuum box).pressure change method (increase / decrease of the pressure, overpressure of the liquid, gas.method of measurement of micro-flow (overpressure/vacuum).(focused on the determination of the leakage position). Integral test (for determination of the total value of the leakage) and localization test Basically two general types of exams are recognized. The dimension of the leak is represented by the volume of the substances passing through Process or in-service induced imperfections, mechanical joints (welds, solved, cemented Is able to detect imperfections of the material failure of metallurgical or technological Which allow escaping of liquids (in presence of the pressure gradient). Leakage testing is focused on the detection of the imperfections in the solid boundary-line, ![]()
0 Comments
Leave a Reply. |