|Maximum Test Parts Size|
|W80×D130×H55mm or below|
|Maximum Test Parts Size|
|W190×D150×H75mm or below|
|Maximum Test Parts Size|
|W300×D210×H75mm or below|
This device can conduct leak tests on a wide range of sealed items.
Packaging Containers (Cosmetics, and Foodstuffs)
The MSZ Series is an air leak testing device able to test the water tightness of the sealed items.
The MSZ Series has been developed as a testing device for water and air tightness in electronic equipment. The following chart shows the testing process model using a smartphone as an example.Smartphones assembled in manufacturing lines are shipped out after going through a range of testing procedures designed for quality assurance purposes. Testing for water and air tightness is one of the tests that are carried out in this procedure.
First, the smartphone required for testing is setup for testing on the MSZ series and then leak testing is commenced. The item is determined as being ready for shipping if it comes within the standard leak volume parameters set prior to the test. Smartphones that show a leak rate higher than the predetermined settings are considered faulty. At this point, areas that are found to be leaking are repaired in order for them to be put back into a state that they can be passed onto shipping. We recommend that leak testing for specific areas be carried out by the HD-111 (Sniffer-Method) unit. ≫Testing process for leak areas
Once the leak area is specified, carry out the necessary repairs. Then set the repaired item into the MSZ series to retest for leaks. The item may shipped if it passes the test and is determined as being non-faulty.
*The area around the speaker must be covered with a seal during this test as this area will always be subject to leaks.
Figure：Flow of the production process
Advantages of testing waterproof performance with air leak tests
Specification settings based on leak amount・quality control・avoid human error・drying process not needed
Generally, waterproof tests are carried out by sinking workpieces or measuring strain amount. Human errors occur easily in sinking tests as numerical control is difficult, and extra processes such as drying are necessary. Moreover, tests using strain amount have low correlation with the leak amount, therefore conversion to air or water leak amounts is not possible. As such, the setting of test specifications is based on the actual workpiece, raising issues with the rationality, adequateness and commonality of the setting values. In contrast, the air leak test is a dry method that directly measures the air leak amount, therefore conversion to water leak amount is easy and is highly advantageous towards specification settings due to the rationality and adequateness of the setting value.
|IPX1||Vertically falling drops shall have no harmful effects|
|IPX2||Vertically falling drops shall have no harmful effects when the enclosure is tilted at any angle up to 15°on either side of the vertical.|
|IPX3||Water sprayed at an angle up to 60°on either side of the vertical shall have no harmful effects|
|IPX4||Water splashed against the enclosure from any direction shall have no harmful effects.|
|IPX5||Water projected in jets against the enclosure from any direction shall have no harmful effects.|
|IPX6||Water projected in powerful jets against the enclosure from any direction shall have no harmful effects.|
|IPX7||Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is temporarily immersed in water under standardized conditions of pressure and time.|
|IPX8||Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is continuously immersed in water under conditions which shall be agreed between manufacturer and user but which are more severe than for numeral 7.|
In the first instance, pressurized air stored within the tank is pumped into (or out of) the test piece capsule, and then any leaks are detected. A comparison with the inner tank pressure is made, and as there is no reduction in test pressure when large leaks are tested, it is also possible to carry out more refined large leak tests. This device is designed for small test pieces with small inner capacities.
The workpiece is sealed with the capsule, and the minute pressure drops caused by the capsule internal pressure leaking into the workpiece are measured.
A hydrogen leak test will be necessary using an HD-111 (Sniffer-Method) in order to identify areas where leaks are occurring in goods that have been determined as faulty using the MSZ series. Tracer gas with 5% hydrogen is used for this testing method.
≫Click here for hydrogen leak testing principles
Diagram 2 shows a leak testing model using the sniffer-method.
The test target is pressurized with tracer gas (hydrogen 5% + nitrogen 95%). Then the tip of the probe is placed directly in the area to be tested, and the leak test is carried out by detecting any hydrogen escaping from the leaking area. The probe is a suction type model with its own built in air pump with a rate of 30ml/min.