Quick Guidance to Function Hatch Cover Maintenance Instrument
Coltraco Ultrasonics Limited is regarded to be a world popular ultrasonic manufacturer and supplier, which produce a huge variety of products to assist industrial sectors with monitoring and measuring requirements. They are working within this field for more than 20 years for which they have experience with more diversity. The Portascanner Watertight is one of its products, which is also known as 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.