Easy to adjust, a standard master that can be used with peace of mind for a long time.
The master chamber is a standard master devised to solve problems such as the deterioration of seals over time and the difficulty in accommodating a variety of workpieces in the master comparison method. 〇Overview The differential pressure leak tester applies a reference test pressure to the master and compares it with the pressure of the workpiece. Instead of the traditional method that uses a workpiece without leaks 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 functions, adjustments become easier, and the high reproducibility characteristics of the master chamber improve detection accuracy.
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basic information
〇 Role of the Master When test pressure is applied to the workpiece, 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 workpiece, eliminating the errors. 〇 Principle and Structure of the Master Chamber The master chamber can be adjusted to match the thermal characteristics of the workpiece 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 ● Adjustments can be made to match the thermal change characteristics of the workpiece ● Compact design that does not require a large installation space ● Cost reduction compared to creating a master using the workpiece ● Reliable sealing with O-rings, providing excellent airtightness and long-term reliability ● Measurement with excellent reproducibility due to no volume change ● When used in conjunction with mastering, a common master chamber can be used for various workpieces, eliminating the need to switch masters.
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Air Leak Test Standard Master
Line up（8）
| Model number | overview |
|---|---|
| MC-F02A(100C) | Volume: approximately 56mL Connection diameter: Rc1/8 Material: Aluminum (A5052) Maximum operating pressure: 800kPa O-ring used: S48 (made by NOK) |
| MC-F02A(200C) | Volume: approximately 109mL Connection diameter: Rc1/8 Material: Aluminum (A5052) Maximum operating pressure: 800kPa O-ring used: S48 (made by NOK) |
| MC-50B | Volume adjustment range: 25~50mL Number of fins used: 5 pieces of SS size Number of colors used: 4 pieces of S size |
| MC-100B | Volume adjustment range: 50~100mL Number of fins used: 11 pieces of SS size Number of colors used: 10 pieces of S size |
| MC-200B | Volume adjustment range: 100~200mL Number of fins used: 13 pieces of S size Number of colors used: 12 pieces of S size |
| MC-500B | Volume adjustment range: 231~500mL Number of fins used: 3 pieces of M size Number of colors used: 2 pieces of M size |
| MC-1000B | Volume adjustment range: 527~1000mL Number of fins used: 6 pieces of M size Number of colors used: 5 pieces of M size |
| MC-2000B | Volume adjustment range: 986~2000mL Number of fins used: 14 pieces of M size Number of colors used: 13 pieces of M size |
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Company information
The Air Leak Tester from Cosmo Instruments started with the automation of cylinder block airtightness testing in 1970. It is utilized in various fields such as automotive parts, gas, water supply, medical, electrical, electronics, and food industries. Since 1983, we have begun our overseas expansion in line with the overseas development of Japanese automotive manufacturers. Currently, we are conducting proposal activities and after-sales service activities similar to those in Japan from 24 locations in 13 countries. Recently, to respond to the electrification of automobiles, we have enabled leak testing of electrification components such as battery cases and inverters, as well as fitting tests for various power connectors, contributing to our customers' CO2 emission reduction efforts. Additionally, we have donated pressure measurement equipment to technical schools in South Asia and Southeast Asia to improve the quality of education, engaged in technical exchanges with local machinery manufacturers, and worked to enhance the industrial foundation through the production of high-quality leak testing equipment locally. We will continue to deliver the value of "quality" by applying our wisdom on-site for our customers and to contribute to the development of local communities.