The NEW API Marine Portable Sounding Device (PSD) is a stand-alone device complies with IMO’s new ship exhaust gas regulations as of January 1, 2020 for accurately measure check the level to liquid in a tank.

The API Marine PSD has been developed to provide fast, easy, and accurate portable tank sounding with an ultrasonic sensor.


  • Short ullage measuring time 3x faster compared to conventional types.
  • Audible/visible alarm for ullage level.
  • No sensitive to foam.
  • Possible to detect transparent liquid.

Description and applications, visit