Cygnus Instruments

Cygnus Product Range
Additional Information
Contact Us +1 410-267-9771
One of our expert Cygnus team will be happy to help you.

Cygnus 1 Intrinsically Safe

Cygnus Hatch Sure is an ultrasonic leak detector able to perform a quick and effective evaluation of cargo hold hatch covers and door seals to determine water leaks and weather tightness.

The system consists of a battery powered transmitter containing 19 ultrasound emitters (40 kHz). The emitters are arranged to produce an omni-directional sound field, uniformly distributed throughout the cargo hold.

The receiver part of the system displays the sound energy level that passes through gaps in the enclosed cargo hold to enable the location of leaks to be quickly and accurately identified.

 Cygnus Hatch Sure Brochure   Inquire about the Cygnus Hatch Sure


  • Type approved and accepted by P & I clubs
  • Lightweight 8 lbs (3.8 kg) - suitable to be hand-carried onto aircraft
  • Digital calibration controls
  • Open Hatch (OH) value and sound level in Decibels (dB) are simultaneously displayed
  • Powerful and robust transmitter
  • Easy transportation in a rucksack-style carry case
  • Receiver supplied with neck and waist straps for hands-free use
  • The transmitter has 6 selectable pre-set power levels enabling the unit to be used in confined spaces
  • Transmitter fitted with shoulder strap for convenience and safety
  • Inspections can be carried out with cargo in place
  • Allows a rapid and thorough test of hatch cover tightness
  • Environmentally friendly - can be used in place of hose testing
  • Can be used in sub zero temperatures
  • 3 year warranty.

Product Enquiry: Cygnus Hatch Sure

Please answer the above question to verify that you are human, this helps us respond promptly to you by reducing junk mail.


Hatch Sure Receiver

Size 4.3" x 7.3" x 1.8" (110 mm x 185 mm x 45 mm)
Weight 17 oz (500 g) including batteries
Power 9v PP3 battery - 2 x MaxE
Rechargeable batteries supplied
Battery Life 4 - 5 hrs continuous with MaxE rechargeable battery
8 - 9 hrs continuous with Alkaline battery
Protection IP65 (IP66 in soft-pouch)
Frequency 40.000 kHz, +/- 200 Hz Bandwidth
Enclosure ABS Plastic with orange shock-absorbing outer boot
Outdoor all weather soft-pouch with waist mounted belt strap
Temperature Range Operating -4°F to 122°F (-20°C to +50°C)
Storage 14°F to 140°F (-10°C to +60°C)
Warranty 3 years

Hatch Sure Inspection Microphone

Size Length 9.4" (240 mm)
Diameter 0.47" (12 mm) / 0.6" (15 mm) with rubber sleeve fitted
Warranty 1 year

Hatch Sure Telescopic Extension

Size Extended length 4 ft (1.215 m)
Collapsed length 16" (0.4 m)
Weight 10 oz (300 g)
Warranty 1 Year

Hatch Sure Transmitter

Size 4.7" x 5.9" x 3.5" (120 mm x 150 mm x 90 mm)
Weight 24 oz (680 g) including batteries
Power 12 x Rechargeable MaxE 2100 mAh supplied with kit (alternatively 6 x AA Batteries)
External 12-24 v DC power input socket (1 amp)
Battery Life 4.5 hours with 2100 mAh MaxE batteries
Battery Charger A six cell AA fast-charger is supplied 100 to 240v AC 50-60Hz supply
Charge time is approx. 1 hour
Protection IP40 in soft-pouch with transmitter elements exposed (normal use)
IP42 in soft-pouch with cover flat secured (storage)
Transmitter Frequency 40.000 kHz, +/-80 Hz Bandwidth Frequency Modulated
Transmitter Elements 19 x 0.63" (16 mm) diameter 40 kHz ultrasound transmitters
Max. Transmitter Power 130 dB (SPL) min
Transmitter Output 6 selectable pre-set power levels - full power and 5 selectable lower outputs in 11dB steps
Enclosure ABS plastic
Padded soft-pouch with protective weather cover and 4 points for attaching rope for lowering into holds
Temperature Range Operating -4°F to 122°F (-20°C to +50°C)
Storage 14°F to 140°F (-10°C to +60°C)
Warranty 3 Years
Compliance  CE, BS EN 60945:2002
(Maritime navigation and radio communication equipment and systems - General requirements - Methods of testing and required test results)
Environmental  RoHS, WEEE compliant

Kit Content

Hatch Sure receiver with protective case, 2 rechargeable batteries for the receiver, neck and waist strap for the receiver, telescopic extension and cable, 2 flexible inspection microphones, protective foam cover for inspection microphone, headphone 2-into-1 splitter cable, neck-band headphones, Hatch Sure transmitter with protective case, shoulder strap for the transmitter, 2 sets of 6 rechargeable batteries for the transmitter, fast charger for the rechargeable batteries, external DC power lead for the transmitter, emergency microphone cable, rucksack style carry case and operation manual.


  • For testing watertight doors
  • For use in confined spaces
  • Sealing integrity checks on large yachts
  • Test seals in cargo access areas, such as bow, side and stern doors or any opening that needs to be sealed
  • Test the weather tightness of cargo hatch covers or doors.

Download brochures

Product Reviews

Write a Review


Related Products


Cygnus Instruments © 2017. All Rights Reserved