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E-mail
13862842898@163.com
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Phone
13862842898
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Address
No. 108 Hongyang Road, Haimen Street, Haimen District, Nantong City, Jiangsu Province
Nantong Jinjing Pharmaceutical Machinery Co., Ltd
Working principle of glass ampoule electronic leak detection machine
Date: 2025-05-29Read: 2
The working principle of the electronic leak detection machine for glass ampoules is mainly based on two types of detection methods, as follows:
1、 Pressure change detection method
1. Vacuum system and pressure monitoring
The equipment uses a vacuum pump to evacuate the detection chamber, forming a set vacuum degree before shutting down the system. If there is a leak in the ampoule, external air will enter the bottle through the micropores, causing a change in chamber pressure. High sensitivity pressure sensors monitor pressure fluctuations in real time and convert signals into electrical signals to determine sealing performance by comparing normal and abnormal pressure changes.
Extended application: Some devices use vacuum attenuation method to accurately quantify the pressure changes caused by leaks, achieving non-destructive testing and high-precision judgment.
2. Pressure testing method
Some devices use pressure sensors to monitor the rate of pressure change inside the ampoule by applying air pressure (positive or negative) to the inside of the ampoule. In a leaking state, the pressure equilibrium time is shortened to determine the presence of micropores or cracks.
2、 High frequency and high voltage capacitor detection method
This method connects the transmitting and receiving electrodes through a high-frequency and high-voltage power supply, and uses the capacitance effect to detect the current difference:
When there is no leakage: capacitors (C1, C2) are formed between the bottle wall and the solution, and a fixed microcurrent (I1) is generated in the circuit;
When there is a leakage: the capacitor disappears, the circuit resistance decreases, and the current significantly increases (I2). The leakage location is determined by the change in microcurrent.
Both methods achieve automated analysis and result output through electronic control systems, ensuring detection efficiency and accuracy.
