A certain oil depot of CNPC is mainly engaged in the storage of petroleum products. The company needs to install an external level switch on the vertical tank of gasoline and diesel oil. The liquid level switch used by the user often gives false alarm and does not provide after-sales service. 

   Through understanding the SMAGALL external measuring liquid level switch, the liquid level switch is a completely non-contact measuring instrument. It will not touch the medium in the tank at all. It only needs to absorb the probe on the tank wall to realize liquid level monitoring. It is easy to install and maintain without opening holes to damage the tank. It is safe and does not add leakage potential. Advanced and reliable technology eliminates false alarm factors. Therefore, it is decided to purchase the external liquid level switch. Up to now, the instrument operates normally.