NAKK Leak Tester Features

NAKK leak tester
Design and Production of Sealing Jig According to Work

Sealing jig is essential to the automation of leakage inspection. Leakage can not be measured with high sensitivity without sealing and measuring method. We can design and produce jigs according to your work.

Wide Selection of Types

You can choose the appropriate type of device according to your requirements.

Highly Sensitive

Its highly-sensitive sensor and specially-designed piping system make leakage inspection ultra-sensitive and fast.

Compact in Size

It is compact in size that saves space and makes it easy to incorporate into automated machines.

General Versatility

It allows the user to freely sets the standard for test pressure, test duration and leakage determination.

Measurement f the Amount of Leakage

Its capability of displaying the level of leakage on indicating device allows user to easily determine the amount of leakage through the use of conversion or tables/graphs.

Incorporation of Tester into Fully-Automated Machine

Since Leak Tester has input and output outlets that allow connection with external devices to receive activation signal and send signals to tells the rejects/non-rejects and the completion of inspection, it can easily be connected to automatic feeding jig and automatic segregation device to be incorporated into mass production line as fully-automated machine.

Problems in the Older Version of Leak Tester (Leakage Inspection)

While inspection Is conducted using Leak Tester (leakage inspection), there may be a case when accurate measurement can not be achieved due to noise. “Difference in temperature” and “Change in volume” are some of the factors that may generate major physical noise.

Difference in Temperature

In case of work that is thin, wide surface area and higher heat conductivity, the pressure inside the pressure difference sensor changes due to the occurrence of volume changes caused by the difference in temperature. The volume increases as temperature rises while the volume decreases as temperature decreases and therefore, the change of pressure can not be detected correctly.

Works that are prone to noise that is generated by the difference in temperature: Pipe, aluminum, radiator, etc.

Change in Volume

Some works expand or contract when pressure was applied into them for inspection. In such case, leak tester is unable to detect the correct pressure change due to change in volume.

Works that are prone to noise that is generated by the difference in volume: Pet bottle, container made of resin, flexible hose, etc.

Such noises can not be avoided by the old Pressure Difference-Type Leak Tester (leakage inspection). Also, even if “Work Comparison Method” is used to avoid the change in temperature, there is still a problem where pressure difference can not be identified when both works has a leak.

The Industry’s First “Work Comparison secondary Measurement Method (patented) ” Solution

In order to resolve the problems in the old version of leak tester (leakage inspection), NAKK has developed a leak tester (leakage inspection) that adopts the new method called “Work Comparison Secondary Measurement Method”. Since it measures the same works using “Work Comparison Method”, the effects from change in temperature and volume are very minimal and therefore, stable inspection can be performed.
Problem in “Work Comparison Method”, which the pressure difference can not be identified when both works has a leak, has also been resolved by the implementation of secondary measurement.
Leak Tester NLT-210