Quanzhou Mingwen Instruments Manuals

Quanzhou Mingwen Instruments LL-19 Air Tightness Tester User Manual

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.

Covers: 前言 · 设备说明及主要技术参数 · 检测方法 · 操作说明 · 设置允许泄漏压差 · 感应器清零