This manual covers the operation, testing methods, technical specifications, and maintenance of the Quanzhou Mingwen Instruments LL-19 air tightness tester.
The Quanzhou Mingwen Instruments LL-19 is a non-destructive leak detection instrument that utilizes the differential pressure method with air as the medium. It is designed for testing the sealing performance of product components and supports both internal and external pressure tests across a range from negative to high pressure, suitable for various materials and volumes (0.01mL～50L).
The document provides detailed instructions on operating procedures, including how to calculate test times based on conditions like pressure and volume. It outlines specific testing methods such as the internal pressure test for small leaks in open containers and the external pressure test for high-pressure scenarios. The manual also includes technical specifications for different models (LL-19YF, LL-19YL, LL-19YM, LL-19YH), maintenance schedules, troubleshooting guides for common issues like product deformation or temperature changes, and safety warnings. This manual is written in Chinese.
| Detection Principle | Differential pressure method |
|---|---|
| Applicable Volume Range | 0.01mL～50L |
| Resolution | 1pa or 2pa |
| Display Screen | 3.7 inch text display |
| Dimensions | 349*225*285 mm (L*W*H) |
| Power Supply | AC220V±10%, 50/60HZ, 50VA |
| Operating Temperature | 5~40℃ |
The LL-19 uses the differential pressure method with air as the medium to detect leaks.
The device is suitable for products with a volume ranging from 0.01mL to 50L.
Turn on the power and air source, then press the reset button for more than 5 seconds to complete the zeroing.