Leak Detection Method For Double Wall Oil Tank

1. Vacuum detection
The interlayer maintains negative pressure
Leakage → Vacuum degree drops → Alarm
High precision, suitable for source protection zones
2. Pressure detection
The interlayer is filled with low-pressure gas
Leakage → Pressure drops → Alarm
3. Liquid medium detection (liquid level detection)
The interlayer bottom is equipped with detection liquid / probe
Oil leakage into the interlayer → Liquid level change → Alarm
Most widely used
4. Core requirements
Double-walled tanks must be equipped with leakage detection devices
24-hour uninterrupted monitoring
Sound and light alarms and automatic recording after
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