Master Chamber MC Series
Easily adjustable standard master with long reliability
Master Chamber is a standard master for Master-comparison leak test that was developed to solve the problem of maintaining master parts. 〇Overview The differential pressure leak tester applies test pressure to the work and the master, and it detects leaks based on the differential pressure between the work and the master. Instead of the traditional method that uses a work without leak as the master, standard Master Chambers that are stable over time and easy to install are now widely used. In particular, when used in conjunction with Mastering, adjustments become easier, and the high reproducibility characteristics of the Master Chambers improve detection accuracy.
basic information
〇 Role of the Master When test pressure is applied to the work, a rapid increase in air temperature occurs due to adiabatic changes. This temperature change becomes a source of error in measuring small leaks. In a differential pressure leak tester, the master compensates for the pressure changes caused by the temperature variations of the work, eliminating the errors. 〇 Principle and Structure of the Master Chamber The Master Chamber can be adjusted to match the thermal characteristics of the work by changing the number and spacing of the fins, thereby altering the ratio of volume to surface area. The Master Chambers A and B in the diagram below have different surface areas, resulting in differences in temperature stability and pressure change characteristics during the detection process. 〇 Advantages of Using a Master Chamber ● Can be adjusted according to the work thermal change characteristics ● Compact and takes up little space ● Cost effective compared to creating a master using the work. ● Reliable sealing with O-rings, providing excellent airtightness and long-term reliability. ● No volume change and excellent reproducibility of measurement. ● When used with Mastering, a single Master Chamber can be used for multiple types of work.
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Model number/Brand name
MC Series
Applications/Examples of results
Air Leak Test Standard Master
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Line up（8）
| Model number | overview |
|---|---|
| MC-F02A(100C) | Volume: approx. 56 mL Port size: Rc1/8 Material: Aluminum (A5052) Maximum test pressure: 800 kPa O-ring: S48 (made by NOK) |
| MC-F02A(200C) | Volume: approx. 109 mL Port size: Rc1/8 Material: Aluminum (A5052) Maximum test pressure: 800 kPa O-ring: S48 (made by NOK) |
| MC-50B | Volume adjustment range: 25 to 50 mL Number of fins: 5 (size SS) Number of collars: 4 (size S) |
| MC-100B | Volume adjustment range: 50 to 100 mL Number of fins: 11 (size SS) Number of collars: 10 (size S) |
| MC-200B | Volume adjustment range: 100 to 200 mL Number of fins: 13 (size S) Number of collars: 12 (size S) |
| MC-500B | Volume adjustment range: 231 to 500 mL Number of fins : 3 (size M) Number of collars: 2 (size M) |
| MC-1000B | Volume adjustment range: 527 to 1000 mL Number of fins: 6 (size M) Number of collars: 5 (size M) |
| MC-2000B | Volume adjustment range: 986 to 2000 mL Number of fins: 14 (size M) Number of collars: 13 (size M) |
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Cosmo’s Air Leak Testers began with the automation of cylinder block airtightness tests for engines in 1970. Our products are utilized in various fields including automotive parts, gas, water supply, medical, electrical, electronics, and food. In line with the overseas expansion of Japanese automakers, we began our own overseas expansion in 1983. We now have 24 sales and service offices in 13 countries. We are offering proposals and providing after-sales services overseas as in Japan. Currently, in order to support the electrification of automobiles, our products are being used for leak testing of parts for electrification such as battery cases and inverters as well as for fitting testing of electric power connectors. We are contributing to the efforts by our customers to prevent emissions of CO2. In various regions of South and Southeast Asia, we are donating pressure measuring equipment to technical schools to improve the quality of education and exchange technologies with local machinery manufacturers. We have been making every effort to help improve the industrial base through local manufacturing of high-quality leak testing equipment.