(Apply to : FRP-Steel double-wall tank interstitial leak detection)
For double-wall tanks made by FRP-Steel or both steels, SFLS-2D discriminating sensor will be installed into the lowest point of the interstitial space which is usually at the bottom of the tank. If any leakage happened in outer wall, it will lead to water from the soil flow into the bottom point of the interstitial space, while the leakage of inner wall will lead to fuel from the inside of the tank flow into the bottom point of the interstitial space, then the liquid will be detected by the SFLS-2D discriminating sensor and will trigger an alarm.
Short circuit alarm
Open circuit alarm
Can detect the hydrocarbon on the water, and trigger fuel alarm