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Cygnus Multiple
Echo Ultrasonic
Thickness
Gauges
for Metal Walls

| Cygnus
Ultrasonic Thickness Gauges can be calibrated for all metal
types. They have stable calibration, linear accuracy, and no zero
adjustment. All probes are protected by a membrane to prevent wear
and damage to the probe face. Single-crystal probes ensure accurate
measurements on curved backwalls. |

Overview |
Cygnus 1 Heavy Duty |
Cygnus 1 Intrinsically Safe |
Cygnus 1 Underwater |
Cygnus 2 Hands Free |
Cygnus 3 Data Logger |
Cygnus 4 General Purpose |
Cygnus Mini ROV |
Cygnus Dedicated ROV
Cygnus Ultrasonic Thickness Gauge
Models:
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Cygnus 1 Heavy Duty Ultrasonic Thickness
Gauge
A
tough, rugged Ultrasonic Thickness gauge using Multiple Echo technology,
designed for use in demanding environments indoors or outdoors. Supplied
ready to use as a complete kit in a protective carry case.
- Heavy duty sealed unit resists water,
dirt and dust.
- Rugged construction - shock proof.
- Stable calibration - linear accuracy -
no zero adjustment.
- Self-verification of measurements
ensures accuracy.
- Various probe options.
- Displays sound velocity and echo strength.
- Bright LED display with polarized
filter.
- Probe frequency selectable
- Low battery warning
- Metric / Imperial switchable
Typical Applications:
Pipeline inspection, general industry, offshore industry, bridge
inspection. |
Cygnus 1
/ IS Intrinsically Safe Ultrasonic Thickness Gauge
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Certified
Intrinsically Safe to Ex II 1 G EEx ia IIC T6.
- For use in hazardous areas.
- No plant shut down or hot work permit
necessary.
- Heavy duty sealed unit - water / dirt /
dust resistant.
- Rugged construction - shock proof.
- Stable calibration - linear accuracy -
no zero adjustment.
- Self verification of measurements to
ensure accuracy.
- Rechargeable batteries with charger.
- Displays sound velocity and echo strength.
- Probe frequency selectable.
- Metric / Imperial switchable.
Typical Applications:
Pipeline inspection, petrochemical industry, offshore industry, shipping
industry. |
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Cygnus 1
Underwater Ultrasonic Thickness Gauge
Used by divers around the world
for submerged pipeline and vessel inspections.
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Pressure rated to
depths of 1,000 ft (300 m).
- Heavy-duty seal with double "O" ring
protection.
- Remote probe with 3 ft (0.9 m) lead
length.
- Rugged, durable, shock-proof
construction.
- Stable calibration, no
zero adjustment.
- Various probe options.
- Rechargeable batteries with charger.
- Large, bright LED display.
- All probes protected by membrane.
- Measurements self-verification to ensure accuracy.
- Echo strength indicator to aid
measurement.
Typical Applications:
Shipping industry, pier & pipeline inspection, underwater pipelines,
offshore industry, bridge inspection. |
Cygnus 2
Hands Free Ultrasonic Thickness Gauge
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Hands
free operation.
- Belt/harness clip and neck strap
included.
- Light, rugged, small, shock-proof
- Sealed to NEMA-4 (IP65).
- Simple keypad operation.
- Measurements error checked using 3
return echoes.
- Display brightness automatically adjusted
to ambient light.
- Accurate measurements on curved and
heavily corroded back walls.
- Accepted by all major classification
societies.
- Gauge senses probe type and
automatically adjusts settings for optimum performance.
- Displays sound velocity settings
- Metric / Imperial switchable
Typical Applications:
Shipping industry, offshore industry, bridge inspection, tank and
pipeline inspections. |
Cygnus 3
Datalogging Ultrasonic Thickness Gauge
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Records
and organizes measurements in Single, Grid and Multipoint Geometries.
- Backlit graphic LCD and end-mounted LED
displays.
- Windows® software for easy data transfer
to computer.
- Can be carried on the waist belt for
ease of climbing.
- Highly water / dirt / dust resistant.
- Rugged construction - shock proof.
- Stable calibration, linear accuracy, no
zero adjustment.
- Measurement self verification to ensure
accuracy.
- Echo strength displayed to aid
measurement.
- Probe protected by a membrane against
wear and tear.
- Metric / Imperial switchable
Typical Applications:
Tank inspection, vessel & boiler tube inspection, bridge inspection,
lighting column inspection, general industry, pipe inspection, road
tankers. |
Cygnus 4 Ultrasonic Thickness Gauge
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Backlit
digital LCD display for viewing in sunlight.
- Rugged construction, shock proof,
protected to IP65.
- Stable calibration, linear accuracy, no
zero adjustment.
- Measurement self-verification.
- Various probe options.
- Displays sound velocity and echo
strength.
- Calibrates to a known thickness or a
known velocity.
- Probe frequency selectable.
- Low battery warning.
- Metric / Imperial switchable
Typical Applications:
Shipping industry, tank, vessel & boiler tube inspection, offshore
industry, bridge inspection, lighting column inspection, pipe
inspection, road tankers. |
Cygnus Mini ROV Underwater
Ultrasonic Thickness Gauge
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Pressure tested to 500 m (1,640 ft).
- Optional dedicated probe holder to allow
measurements on curved or flat surfaces.
- Small, lightweight and easy to install.
- Single twisted pair to transfer data to
urface.
- Power supply taken locally from ROV.
- Probe does not need to touch surface
under test.
- Measurements can be taken through 5 mm
of water.
- Readings not influenced by the probe
orientation.
- Dedicated software for topside PC
display of measured results, data storage and setting gauge calibration.
Typical Applications:
Shipping industry, deepwater pipeline inspection, offshore industry,
pier & piling inspection. |
Cygnus Dedicated ROV Underwater
Ultrasonic Thickness Gauge
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Model pressure tested to 1000 m (3,300 ft).
- Model pressure tested to 3000 m (10,000 ft).
- 5 m of probe cable for routing around
most ROVs.
- Power supply taken from ROV.
- Single twisted pair to transfer data to
surface.
- Probe does not need to touch surface
under test.
- Measurements can be taken through 5 mm
of water.
- Readings not influenced by the probe
orientation.
- Dedicated software for topside PC
display of measured results, data storage and setting gauge calibration.
Typical Applications:
Shipping industry, deepwater pipeline inspection, offshore industry,
pier & piling inspection. |

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Cygnus
Multiple Echo Technology
With multiple
echo technology, readings are taken by measuring the time
delay between any three consecutive backwall echoes. The
time T1 (for coating thickness) is ignored. The times T2 and
T3 are equal to the time that it takes for sound to travel
through the metal. Only by looking at three echoes can the
measurements be made for the metal thickness, where T2 = T3. |

Common ApplicationsPipe
wall thickness measurements...
- To confirm adequate wall thickness prior to arc welding for
hot taps, fittings, repairs or encirclement wraps
- To confirm adequate wall thickness prior to fusion welding
of test leads or cathodic protection leads or anodes
- To detect internally corroded areas
- To detect laminations
- To monitor effectiveness of inhibitors
- For X-ray for correct exposure time
External measurements to confirm exact locations of
anomalies detected by "smart pigs" prior to expensive...
- Coating removal
- Cutting into line or other repairs
Tank wall thickness measurements...
- To meet the requirements of API Standard 653 for Above
Ground Storage Tanks
- To test for corrosion on other tanks (bullets, spheres,
etc.)
Prove adequate remaining wall thickness after
external damage due to...
- Line hit
- External corrosion
- External wear abrasion
Wall thickness measurement for quality control of
materials on receipt.
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