Protect your vessel with the Portascanner® Watertight?

The Portascanner® Watertight is a watertight integrity testing device. It has two main components – a generator and receiver. The ultrasound generator emits a specific frequency of ultrasound (40,000 Hz). It is magnetic so can be attached onto a wide range of surfaces within sealed areas. The receiver then picks up the signal and converts it into a result indicating W/T integrity.

Receiver

  • The receiver is tuned to detect a specific frequency of ultrasound.
  • The receiver comes with a sensor rod, which allows a user to scan the entirety of a seal at close range.
  • The receiver has both a visual and audio output which gives off better results for Hatch cover maintenance and watertight integrity testing.
  • The visual output is shown on the LCD screen of the receiving unit. It is read mathematically and in decibels.
  • There is a numerical representation, which can be changed into a decibel (dB) reading, allowing seals to be tested to certification society standards.
  • There is also a bar graph representation of the strength of the ultrasonic signal, which is being detected.
  • The audio signal is delivered via headphones, which plug into the receiver unit (standard 3.5 mm jack).
  • The receiver uses a process called heterodyning to change the ultrasound signal received into an audio signal, which the user can hear.

Generator

  • The generator is placed on one side of a sealed compartment and turned on.
  • The user stands on the other side of the compartment and uses the sensor rod to scan the seal.
  • The receiver displays the strength of detected signal on the screen and the user can also hear it through the headphones.
  • Leak sites will be apparent from increased signal strength
  • This will be shown by an increase in the readings on the screen display and in the volume of the audio signal

Portascanner® Functionality

We have mentioned the details of two main functioning unit of this ultrasonic hatch cover tester below:

Generator – Portascanner® Watertight

The generator is an ultrasonic generator with three transducers. This will produce a strong signal in one direction i.e. directly from the transducer, which fills the compartment being tested with ultrasound pulses e.g. providing sufficient coverage to fill the hold when the hatch-covers are closed. The generator is permanently fitted with a powerful magnet which allows it to be attached to the vessel’s structure where required. A magnet cover is provided when the magnet is not in use

Receiver – Portascanner® Watertight

The receiver uses ultrasonic technology to convert the 40KHz pulses sent by the generator into three easily comprehensible readings: audible, bar graph and numerical which enables the operator to understand if the seal is wholly watertight or to what extent a leak exists.

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