Calibration is one of the many ways to achieve a precision in leak testing. Internal calibration delivers the desired results for the most leak testing applications since the leak detector properly tunes to helium and correctly reports the leak it sees. However, accuracy is influenced by numerous factors, most of which are not in control of the leak detector and are not considered by any internal calibration. Keep in mind, while the calibration procedure the detector is separated from the user’s chamber. The effects of these factors are often considered as inconsequential, as most of the users are focused to find the leak and not the precise measurement of its degree. However, if you wish to have a quantitative analysis, the external calibration process is bound to be performed. This majorly involves accurate zeroing of the fixture background signals.
Calibration procedure
Some of the applications may follow firm protocols for their objectives and are performing testing that is highly sensitive, it may want to calculate a leak value as precisely as possible. In addition to this, a user may hold a leak detector connected to a volume that specifically reflects the different test environment than the leak detector itself. These features simultaneously contribute to the helium signal that the leak detector sees and therefore the accuracy must be considered. The only way to take these factors into considerations is to calibrate to a helium source that is a part of the user systems.
Calibration makes the leak tester a very useful tool. The procedure makes them traceable to the level, where they can be used for anything from a simple leak test to the challenging performance of a complete leak test systems. If we use the appropriate meters and gauges under the proper conditions, the calibration of the tester is a just a matter for a calibration laboratory. The accuracy and performance of the electrical component vary differently, therefore the calibration of the leak tester is required on the regular and documented basis. A leaking master is crafted to provide a leak of a particular magnitude, under the well-defined conditions of pressure or flow. Hence, it could be utilized to stimulate a leaking part. The right way to specify a leaking master is to define the test pressure, the leak rate, and the test medium. The test medium is generally air but can differ, like, a leaking master generated for a helium leak test system. The leak master is validated through the utilization of traceable instruments, verifying its performance.
Once manufactured according to the specific requirement the leaked master is then issued with a calibration certificate. The user must make the certificate a part of their quality assurance records, simultaneously leak master must be treated and stored in the same manner as the different attribute gages. The leak must be treated with care and must not be dropped as this can cause damage and change the leak rate.
Since it is a portable quick connect the device, we can use it to test the integrity of many leak test stations of the similar specifications. One needs to perform those extra steps to ensure the accuracy of the leak test method. A more exact approach to the calibration is to use calibration tools that are adjustable at every level of pressure.
There are a lot of firms out there providing a leak testing services. But MikroIndia excels in offering the best in the industry services, that are the result of thorough considerations of all the regarding factors. To enquire or know more you can call or visit the site and you will be thoroughly assisted with your queries.
