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Cygnus 1 /
Intrinsically Safe Thickness Gauge
Digital,
Ultrasonic Multiple Echo


Intrinsically Safe through-coating metal
wall thickness gauge measures
remaining metal thickness 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
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Ex II 1 G EEx ia IIC T6 |

Features
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Certified Intrinsically Safe to
Ex 11 l G EEx ia IIC T6 (CSA Class I Group A Division 1) for use in hazardous areas.
- No plant shutdown or hot work
permit necessary.
- Heavy duty sealed unit - highly
water / dirt / dust resistant.
- Rugged construction - shock
proof.
- Stable calibration - linear
accuracy - no zero adjustment.
- Self verification of the
measurements to ensure accuracy.
- Various probe options.
- Rechargeable batteries with
charger.
- Displays sound velocity
settings.
- Echo strength indicator to aid
measurement.
- Bright LED display with
polarized filter.
- Low battery warning.
- Metric / Imperial switchable.
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Benefits
-
Multiple-echo,
single-crystal Ultrasonic Thickness Gauge.
- Coatings
do not have to be removed - measures only the metal thickness.
- Accepted by major classification
societies.
- No grinding - minimum surface
preparation.
- Measures on rough corroded
surfaces.
- Speed, accuracy and reliability.
- No false readings - repeatable
results.
- Easy to use - minimum operator
training.
- Greatly reduced inspection time
and cost.
- Measures on metals and some
other materials.
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Applications
-
Maintenance and safety checks on
petroleum, chemical and LPG storage tanks.
- Corrosion checks on ships' shell
plates, bulkheads and inside enclosed areas.
- Metal thickness safety checks on
steam and pressurized water systems, transportable gas
containers and compressed air systems.
- Systematic wall thickness and
corrosion monitoring of storage tanks and process vessels.
- Quality assurance metal
thickness checks.
- Metal thickness monitoring on
cranes, marine structures and conveying systems.
- Pipeline wall thickness
monitoring.
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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
in steel |
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.
6 mm - 5 MHz
13 mm - 2.25 MHz, 3.5 MHz or 5 MHz
19 mm - 2.25 MHz |
| Power
Source |
Two NiMH
rechargeable batteries |
| Display |
Large,
clear LED display with polarized filter |
| Dimension |
225
mm x 75 mm |
| Weight |
910
g - remote probe
819 g - fixed head |
| Operating
Temperature |
-10°C
to +50°C |
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Warranty |
3
years |
| Certifications |
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Kit Contents
- Instrument
- Heavy-duty, remote, 2.25 MHz,
13 mm diameter probe.
- Two rechargeable batteries.
- Battery charger.
- Spare membranes and "O" rings.
- Steel test block.
- Calibration trim tool.
- Couplant.
- Operation manual.
- Carrying case.
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