• Ultrasonic Transmitter unit
• Receiver unit
• Hard hat compatible headphones
• 2 Flexible inspection microphones (1 spare)
• Protective IP66 storm-proof leather cases with neck and waist straps for hands free operation
• Telescopic microphone extension, up to 1.15m
• Full operating instructions
• Emergency microphone lead
• Emitter, microphone and extension arm tester
• Batteries and global charger (with 12V car adaptor)
• 12-24V auxiliary power input lead
• 450 x 320 x 100mm Carry case
• Total weight of kit in carry case as shown: 2.7kg
• Operational weight 2.4kg
  
  
  

CARGO-SAFE™ Features

• Unlike hose testing, ultrasonic testing
• is compliant with port and harbour environment management plans as it does not pollute the marine environment
• can locate holes and tears in hatch seals with pin point accuracy
• causes no damage to cargo
• can be conducted in sub-zero temperatures
• can be carried out with the cargo in place
• does not interfere with other crew activities
• Each CARGO-SAFE comes with its own certificate of calibration and conformity.
• No training needed to operate - full instructions given
• Simple to use, fast and accurate results
• Switchable between dB ( decibels ) and percentage of OHV ( Open Hatch Value )
• Does not need frequent periodic recalibration
• The results are reproducible and accurate
• The size of holes is easily evaluated by the digital read out
• Suitable to be carried as hand luggage on aircraft.
• The most powerful ultrasonic hatch tester available on the market with a 157 dB Transmitter – suitable for any sized hold
• 3 year warranty on Receiver and Transmitter.
• Durable and storm proof, environmental protection to IP66.
• LCD display allows ease of reading in bright sunshine or in darkness.
• LED and sound warning of low battery life on the Transmitter.
• Direct access to technical support
  

  Hatch Cover Testing

  The weather tightness of a hatch cover sealing system is dependent on several factors, but the condition of the packing rubber on the compression bars is an important aspect of maintaining a tight hatch seal.

  CARGO-SAFE enables a true and accurate evaluation of their ability to stay water tight throughout a voyage, by ascertaining potential areas of perish and wear and providing the opportunity for pro-active maintenance, extending the life and value of the hatch cover seals.
  

  How the CARGO-SAFE™ ultrasonic hatch cover testing equipment works

  The principle for ultrasonic testing is very simple. After the hatch covers are closed, an ultrasonic transmitter, which generates an ultrasonic signal is placed in the cargo hold (empty or loaded with cargo) and emits ultrasonic waves. The surveyor or operator then uses the CARGO-SAFE ultrasonic receiver to listen from the outside of the hold and is able to pick up any ultrasonic sounds that pass through holes in the hatch cover sealing system with pin point accuracy. The size of the problem can be established from the strength of the signal detected.

  

  The CARGO-SAFE hatch cover leak detection system has three levels of emitters upper, lower and vertical. This means that all the ultrasound is directed to the hatch covers and so optimises its effectiveness. The diagram shows the dispersion pattern of the ultrasonic sound emanating from the CARGO-SAFE transmitter. The high sound pressure level is ample to fill the largest of holds enabling reliable and accurate readings to be taken

  Click for a printer friendly .pdf

Step by Step Guide to Hatch Cover Leak Detection


   1. The CARGO-SAFE Transmitter is placed in the cargo.

   2. On the deck, with the hatches closed, the microphone and headphones are plugged into the  Receiver.

   3. The surveyor begins to inspect the hatch, holding the microphone against the hatch seals. Any gaps through which air or water can pass, will allow the ultrasonic signal to pass and can be detected.

   4. The display on the Receiver will show the decibel level of any ultrasound leaking through the hatch seals. It can also be heard through the headphones.

   5. The flexible microphone and the extension arm allow the position of any potential leaks to be identified with pin-point accuracy. The size of the problem can also be established from the strength of the signal detected.

CARGO-SAFE™ Calibration and Maintenance

The CARGO-SAFE is sold with a device that can be used to check the emitters, the inspection microphones, the extension arm and microphone emergency lead (The E.M.EA Tester). It is recommended that this is done before each survey, to ensure accurate results.
The CARGO-SAFE is calibrated at the factory and is predicted to stay in calibration for 5 years. The constant output circuitry guarantees the ultrasonic output of the Transmitter to be constant over the entire discharge cycle of the batteries, validated by the green flashing LEDs.

CARGO-SAFE™ Certificates and ABS Type Approval Compliance

Each CARGO-SAFE unit is sold with a certificate of calibration and conformity, giving full details of serial numbers and warranty periods. This certificate is evidence of each unit’s calibration and ABS Type Approval compliance. CARGO-SAFE complies with the IACS UR Z.17. directive. The certificate of origin confirms that CARGO-SAFE is manufactured in the UK.

CARGO-SAFE™ After Sales Support

Class Instrumentation Limited guarantees the instrument to be free from defects in materials and workmanship for a period of three years from the date of dispatch for the Receiver & Transmitter and six months for the accessories. Free technical support is available throughout the life of the product.

CARGO-SAFE™ Specifications

CARGO-SAFE is a lightweight ultrasonic system for testing the water tightness of cargo hatch covers. 
The complete system is contained in one carry case for convenient transportation.
Shipping Weight: 4kg     Operational Weight: 2.4kg

Transmitter

• Weight: 475g
• Dimensions: 190 x 100 x 60mm (max)
• Output: 157 dB @ 40KHz
• Radio control standby saves battery life when not in use
• Power Supply: 6 x AA rechargeable or alkaline batteries - 4.5 hours of operation
• Storm proof genuine leather case to IP66, designed to protect the unit if dropped
• Neck strap for hands free use

Receiver

• Weight: 350g
• Dimensions: 160 x 100 x 30mm
• Power Supply: 1 x 9vPP3 rechargeable or alkaline battery - 40 hours of operation
• Switchable between dB ( decibels ) and percentage of OHV ( Open Hatch Value )
• Internal loudspeaker - can be used instead of headphones
• Internal microphone – can be used in the event of having no microphone
• MAX HOLD capability to record the maximum reading
• Backlight button with ON OFF or auto OFF after 30 seconds
• Storm proof genuine leather case to IP66, designed to protect the unit if dropped
• Neck strap and waist strap for hands free use
• Radio control button to switch the transmitter from standby to ON

Microphone

• Weight: 110g
• Dimensions: 330 x 10mm diameter - small diameter to get into cross joints
• Bright yellow to improve visibility

Extension Arm

• Weight: 150g
• Dimensions: 390 x 40 x 30mm
• Extended: 1150 x 40 x 30mm
• Wrist strap for hands free use

Headphones

• Weight: 50g
• 3.5mm stereo jack plug (can use stereo or mono headphones)
• Hard hat compatible