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Cygnus
Dedicated ROV Thickness Gauge
Underwater Mountable,
Ultrasonic Multiple Echo
Two underwater mountable multiple echo ultrasonic
thickness
gauges.
Pressure tested to depths of 1000 m
and 3000 m for use with ROV.
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
 Description
Cygnus Instruments offers two
dedicated ROV mountable thickness gauges. The units have been
designed to be mounted onto most types of work class ROV with a
manipulator facility. The shallow water version is pressure tested
to 1000 m, and the deep water version is pressure tested to 3000 m.
Dedicated software displays the time, date and thickness readings on
the surface. All readings can be stored.
Features
- Shallow water version pressure tested to
1000 m (3,300 ft).
- Deep water version pressure tested to 3000 m
(10,000 ft).
- 5 m of probe cable for
routing around most ROV's.
- Power taken from ROV.
- Only one twisted pair
required to transfer data to surface.
- Probe does not need to touch
the surface under test -- measurements can be taken through 5 mm
of water.
- Readings not influenced by
the probe orientation.
- Dedicated software for
displaying measured results, storing measurements and calibrating gauge.
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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 1000 m/s and 9995 m/s. |
| Range |
3 mm to 250 mm with 2.25 MHz probe.
2 mm to 150 mm with 3.5 MHz probe.
1 mm to 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.
13 mm - 2.25 MHz, 3.5 MHz or 5 MHz
19 mm - 2.25 MHz |
| Power |
7.5
- 30 Vdc @ 150 mA (max) |
| Size |
237 x 70 mm |
| Weight
in air |
1.25 kg, 1000 m depth model
4.00 kg, 3000 m depth model |
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Operating Temp. |
-10ºC to +50ºC |
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Communications |
Standard RS-422 |
| Warranty |
Two years |
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Surface Requirement |
PC
or laptop with VGA screen and available COM port. |
Kit Contents
-
 Instrument.
- Heavy duty, remote 2.25 MHz, 13 mm
diameter probe
with 0.25 m of cable.
- Sealed 4-way connector with fly
lead.
- RS-422 to RS-232 converter.
- Test cable.
- Remote display and datalogging software
(Windows
compatible).
- Spare membranes and "O" rings.
- Steel test block.
- Operation manual.
- Carrying case.
- Not included: PC or laptop computer
with available serial port or USB port.
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