The LS-1881 consists of a Windows®-based Controller Unit that can handle up to 8 separate Pneumatic Units to achieve high-speed production rates.  This leak test package can also be used to simultaneously test multiple cavities on a single production part.  Utilizing the same patented Differential Pressure Sensor (DPS) as the LS-1842 Air Leak Tester, the LS-1881 Unit allows for a wide variety of quality control features as well as easy operation, all viewed and controlled from a large, full color touch panel LCD.

LS-1881 Tester

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Reduce Cycle Times

In addition to being able to perform 8 simultaneous tests, Cosmo’s Advanced Differential Pressure Sensor (DPS), high resolution A/D converter, Noise Reduction Mode, Mastering Compensation, and quick-test features allow for dramatic reductions in cycle times. 


With advanced program settings, quality control features, intuitive graph functions, and 32 programmable channels per pneumatic unit, the LS-1881 is the most state-of-the-art multi-channel leak tester on the market today.  Additional pneumatic units can even be added to an existing controller unit (up to 8 total).

Error-Minimizing Features

Ensure smooth production flow and minimal down time utilizing the LS-1881’s enhanced self checks, adjustable pressure limits, drift compensation, and program lock-out features.

Low Maintenance

Cosmo custom-built air valves and sensors are designed to meet the demands of high volume production environments.

Ease of Use

Daily calibrations are not required once the initial part seupt has been completed.



Master Chamber

Calibrated Leak Orifice (LM-1B)

External Exhaust Valve

External Bypass Unit

No-Leak Selector Valve