Total Solution

With the increasing requirements for safety, energy conservation and environmental protection, the phenomena of oil leakage of automobile engine, water intake of electronic equipment (IP grade), air leakage and non-refrigeration of air conditioner, failure of medical supplies due to air pollution are becoming more and more unacceptable to consumers, and manufacturers are facing soaring quality costs because of the unqualified air tightness of products. Thus, how to correctly plan and implement leak detection work is becoming increasingly important.

As a professional manufacturer in the field of leak detection, Boyi Pneumatics possesses enough technical ability for the provision of a total solution for customers.

   ● Determination of Critical Leak Rate

◎ Leakage is absolute, while non-leakage is relative. To judge whether it belongs to leakage or not, there must be a quantitative leak rate specification (i.e. critical leak rate).

◎ Wherever there is no quantitative specification, it is necessary to determine the critical leak rate through theoretic calculation and verification experiment according to actual working conditions;  

◎ When the size of leak hole diameter (e.g. 5μ) or the loss of working medium (e.g. 5g/year) is taken as the index, there is need to calculate the critical leak rate (ΔP, Pa.m3/sec, atm.ml/min) according to the shape of product leakage hole, the physical features of working medium and relevant detection parameters, while determining the quantitative specification through verification experiment.

   ● Determination of Leakage Detection Method

◎ Commonly-used leak tester: flow leak tester, gage pressure leak tester, differential pressure leak tester, nitrogen hydrogen leak detector, helium mass spectrometer leak tester;

◎ The applicable leak detector is determined based on the requirements for critical leak rate, products structure, rhythm of products line, whether to locate leakage points, and etc.

   ● Development of Leak Detection System

◎ Determine the configuration and composition of loading & unloading of work piece, transmission, positioning, plugging and other functional modules in the leak detection system according to the production line planning, so as to meet the testing rhythm requirements;

◎ Determine the configuration, composition and function of relevant leak detection modules in the leak detection system according to the leak rate requirements, so as to ensure the consistency and reproducibility of the leak detection results when operating by different personnel at different times and locations.

   ● Traceability of Leak Rate Calibration

◎ Commonly-used standard devices: Leak standard (constant pressure, constant leak rate, leak weights), calibrator  (micro volume primary standard);

◎ Determine the leak standard or calibrator for metrological traceability, equipment check, confirmation of operating condition leak rate, and benchmarking between upstream and downstream.

   In a word, only if such leak detection schemes as "how to quantify the leak rate", "whether leak detection methods are matched", "whether the repeatability of detection data under working conditions can meet requirements" and "how to make the detection accuracy under controlled conditions" are fully considered, can it possible to make the leak detection work form a closed cycle and can it deserve to be called as a "total solution", thus ensuring the successful completion of ultimate leak detection task, i.e. "Leakage or not, value of leakages, location of leakages".