It will be effective in improving the detection accuracy of work that is significantly affected by temperature and volume changes.
The method of simultaneously comparing and measuring two workpieces eliminates error factors such as temperature and deformation, enabling high-precision leak testing. However, when there is equivalent leakage, it may lead to misjudging good products, and it is not recommended unless the defect rate is extremely low. The multi-comparison method conducts both the master comparison inspection process and the simultaneous comparison inspection process of two workpieces within a single test procedure. This allows for high-precision detection while minimizing misjudgment in cases of identical leakage.
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basic information
■ Features • Improvement of accuracy for workpieces significantly affected by temperature and volume changes: By performing simultaneous comparison, errors caused by volume changes and temperature conditions, such as deformation and distortion, are nearly canceled out when comparing workpieces under similar conditions, enabling high-precision inspection. The use of master comparison minimizes the rate of misjudgment: Even if the two workpieces being inspected have similar levels of leakage, the probability of missing it is reduced through master comparison inspection. • Reduction of inspection time: By applying pressure to both workpieces and the master simultaneously, inspection time is shortened. • Possibility of simultaneous inspection of three pieces: It is also possible to compare and detect three workpieces without using a master. • Master preset function to enhance inspection accuracy: The master preset function corrects differential pressure caused by factors other than leakage, such as environmental temperature. This function operates during both master comparison and simultaneous comparison processes.
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Applications/Examples of results
The air leak tester is an automatic leak testing machine that detects minute pressure changes by applying air pressure or exhausting to a vacuum, determining the quality of parts or finished products that require airtightness. Engine parts / Engine valve seats / Cam caps / Cylinder blocks / Engine assemblies / Crankcases / Cylinder heads / Oil pans / Crankshafts / Cylinder head covers / Camshaft balls (plugs) press-fit / Cylinder pistons / Fuel system parts / PE, VE pumps / Injection valves / Canisters / Carburetors / Throttle chambers / Throttle bodies / Delivery pipes / Filler caps / Fuel injectors / Fuel quick connectors / Fuel senders / Fuel tanks / Fuel pipes / Fuel pumps / Fuel pump check valves / Fuel pump relief valves / Common rails / Vent valves / Engine assembly fuel systems / Intake and exhaust parts / EGR pipes / PCV valves / Intercoolers / Intake manifolds / Inlet pipes / Exhaust manifolds / Throttle bodies / Turbochargers / Bearing cases (for turbo) / Mufflers, etc.
Company information
Starting with the automation of cylinder block airtightness testing for engines in 1970, Cosmo's air leak testers have expanded their applications to various automotive parts, gas, water, medical, electrical, and electronic fields. In 1983, in line with the overseas expansion of Japanese automotive manufacturers, we began our overseas operations to realize after-sales service at customer manufacturing sites. Currently, we are conducting proposal and after-sales service activities similar to those in Japan from 24 locations in 13 countries. To respond to the electrification of automobiles, we are contributing to our customers' CO2 emission reduction efforts by utilizing leak testing for electrification components such as battery cases and inverters, as well as fitting tests for various power connectors. Additionally, in South Asia and Southeast Asia, we are working to improve the quality of education by donating pressure measurement equipment to technical schools and engaging in technical exchanges with local machinery manufacturers to enhance the industrial foundation through the production of high-quality leak testing equipment. We will continue to deliver the value of "quality" by putting our heads together and working hard at our customers' sites, while also striving to contribute to the development of local communities.
![[Rental Service] Air Leak Tester for Air Tightness Inspection, etc.](https://image.www.ipros.com/public/product/image/22c/2000432027/IPROS13152309626642173643.png?w=280&h=280)
