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Cygnus 1
Underwater Thickness Gauge
Ultrasonic
Multiple Echo
Hand-held, Underwater Metal Wall Ultrasonic Digital Thickness
Gauge.
Measures metal thickness to
1,000 feet under water to determine
wastage
or corrosion --
accurately, quickly and without removing surface coatings.
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
Features
-
 Pressure tested to
1,000 ft (300 m).
- Heavy duty sealed unit with double
"O" ring protection.
- Remote probe with 0.9 m lead for
measuring in awkward locations.
- Rugged durable shock-proof
construction.
- Stable calibration - linear accuracy
- no zero adjustment.
- Various probe options.
- Two rechargeable batteries with
charger
- Large bright LED display for poor
lighting conditions.
- All probes protected by a
membrane to prevent damage.
- Self-verification of the measurements
to ensure accuracy.
- Echo strength indicator to aid
measurement.
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Applications
- Metal thickness and corrosion
checks on offshore structures and ships.
- Safety corrosion monitoring of
pipelines and storage vessels.
- Metal thickness / wear checks on
anchor chains, jetties, dock gates, piers and pilings.
- Ships classification surveys.
- Maintenance and safety checks on
bridges.
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Advantages
- Coatings do not have to be removed -
measures only the metal thickness.
- Accepted by major classification
societies.
- No grinding - minimum surface
prep.
- Measures on rough corroded surfaces.
- Speed, accuracy and reliability.
- No false readings - repeatable
results.
- Easy to use - minimum operator
training.
- Greatly reduced inspection time &
cost.
- Measures on metals and some other
materials.
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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. |
| Materials |
Sound
velocities between 2000 m/s and 7000 m/s. |
| Range |
3 mm - 250 mm with 2.25 MHz probe.
2 mm - 150 mm with 3.5 MHz probe.
1 mm - 50 mm with 5 MHz probe. |
| Accuracy |
±0.1 mm
or ±0.05 mm |
| Resolution |
0.1 mm or 0.05 mm |
| Probes |
Remote
single-crystal, soft-faced compression.
6 mm - 5 MHz
13 mm - 2.25 MHz, 3.5 MHz or 5 MHz
19 mm - 2.25 MHz |
| Power |
NiMH
rechargeable batteries |
| Display |
Large, clear
LED display with polarized filter. |
| Size |
238 x 85 mm |
| Weight |
977 g with remote probe. |
| Operating Temperature |
-10șC to +50șC |
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Warranty |
3 years |
 Kit Contents
- Instrument.
- Heavy duty, remote 2.25 MHz, 13 mm
diameter probe.
- Two rechargeable batteries and
battery charger.
- Spare membranes and "O" rings.
- Steel test block.
- Lanyard.
- Calibration trim tool.
- Operation manual
- Carrying case
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 Topside
Repeater Options
The topside repeater is available in
case of poor visibility or when the readings need to be verified on
the surface. Umbilical cable length is specified by the customer up
to a maximum of 1000 m. Two options are available:
- OPTION A
Palm held surface display repeater with large liquid crystal display
and an IP65 sealed case.
- OPTION B
Datalogging and remote display windows based Option software. The
umbilical is connected directly to the serial port of the PC (PC not
included).
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