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The Cygnus 4PLUS is a small and tough multi-mode ultrasonic thickness gauge which features an A-scan display, simple to use sequential data logging and manual and automatic gain control.
Designed for the harshest of environments, with a simple to use keypad, intuitive menus and a colour LCD display which can be viewed in all lighting conditions

**Errors and omissions excepted (E&OE)

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Designed for the harshest of environments, with a simple to use keypad, intuitive menus and a colour LCD display which can be viewed in all lighting conditions.

The twin shot injection moulded enclosure has a soft but durable TPE outer skin which is comfortable to hold and protects against bumps while the hard internal shell offers maximum strength and environmental protection certified to the demanding US MIL STD 810G standard.

The unit still relies on Multiple-Echo to provide simple and accurate measurements, with the added benefit of Echo-Echo and Single-Echo using twin crystal probes for extreme corrosion. Echo-Echo for measurements on painted metals but with heavy back wall corrosion / pitting and Single-Echo for measurements on uncoated surfaces with heavy front face and/or back-wall corrosion and attenuative materials such as cast metals or plastics / composites.

  • Multiple-Echo for reliable, accurate through coating measurements
  • Single-Echo and Echo-Echo measuring modes with twin crystal probes for extreme corrosion and back wall pitting
  • A-scan display
  • Manual and automatic gain control
  • MSI™ (Measurement Stability Indicator) used in Single-Echo and Echo-Echo measurement modes
  • Simple linear data logging
  • Large bright colour LCD screen with back light
  • Deep-coat mode, measure through coatings up to 20 mm thick
  • Wrist mountable
  • Min/max measurement limit functions with visual and vibrate alert
  • Intuitive easy to use menu
  • Extremely rugged enclosure – shock and impact to US MIL STD 810G
  • Environmental sealing to IP67 – US MIL STD 810G
  • Cygnus echo strength bars to assist quick measurements
  • Buttons integral with the TPE moulding and designed for minimum 100,000 depressions.
DATA LOGGING KEY FEATURES
  • Versatile data logging which allows measurements and A-scans to be saved
  • 5,000 measurement points (including A-scan) per record
  • Records are saved to a removable SD card
  • Selectable auto-log feature
  • Records easily transferred via gauge USB port to *CygLink software where they can be exported to a .CSV file or a PDF report.

 

Materials Sound velocities between 1000 – 9000 m/s – covers virtually all common engineering materials
Accuracy ±0.1 mm or 0.1% of thickness measurement, whichever is greatest, when calibrated in accordance with Cygnus Instruments calibration procedure
Resolution Multiple-Echo mode – 0.1 mm or 0.05 mm
Single-Echo and Echo-Echo modes – 0.01 mm
Measurement Range in Steel Single crystal probes in Multiple-Echo:

  • 3 – 250 mm with 2.25 MHz probe (S2C/D)
  • 2 – 150 mm with 3.5 MHz probe (S3C)
  • 1 – 50 mm with 5 MHz probe (S5C/A)

Twin crystal probes in Single-Echo:

  • 2.5 – 250 mm with 2 MHz probe (T2C)
  • 1.5 – 200 mm with 5 MHz probe (T5B)
  • 0.8 – 50 mm with 7.5 MHz probe (T7A)

Twin crystal probes in Echo-Echo:

  • 5 – 50 mm with 2 MHz probe (T2C)
  • 4 – 50 mm with 5 MHz probe (T5B)
  • 3 – 25 mm with 7.5 MHz probe (T7A)
Connector Twin Lemo 00
Power 3 x AA batteries
Battery Life 10 hours minimum
Electronics Dual channel pulser
Display 2.4″ quarter VGA LCD
Size 132 x 82 x 34 mm
Weight 300 grams (inc. batteries)
Operating Temp. -10°C to 50°C
Data Logging Capacity up to 5000 points including A-scans
Computer Software CygLink allows remote logging and viewing of A-scan graphs.
Survey and report generation to PDF file.
Data can be exported as a .csv file.
Graphic analysis of data and statistical calculations.
Designed for Windows 7 and Windows 8.
Environmental Rating IP67 (dust tight and immersion – 1 metre for 30 mins)
Explosive Atmosphere: Safe operation as defined by Class I, Division 2, Group D, as found in the National Fire Protection Association Code (NFPA 70), Article 500, and tested using MIL STD 810G Method 511.5, Procedure I
MIL STD 810G Method 501.6 (high temp +55°C)
MIL STD 810G Method 502.6 (low temp -20°C)
MIL STD 810G Method 507.6 (humidity 95%)
MIL STD 810G Method 512.6 (immersion – 1 metre for 30 mins)
Shock and Impact MIL STD 810G Method 514.7 (vibration – 1 hour each axis)
MIL STD 810G Method 516.7 (shock 20g – 11ms half sine shock pulse, 40g 11ms in each axis)
MIL STD 810G Method 516.7 (26 drops – transit drop 1.22 m)
Standards Designed for EN 15317
Environmental RoHS, WEEE compliant
Warranty 3 years on gauge and 6 months on probe
Cygnus MK5 Range – Multiple-Echo Ignores Coatings up to 20mm Thick

Stainless Steel INOX Single Crystal Probes

The INOX probes have an updated ergonomic design and an easier to read frequency, identification and serial numbering. All frequencies of INOX probes have a black face and a colour coding ring to identify probe frequency.

Used in Multiple-Echo mode, these probes require no zeroing, have a high linear accuracy, are ideal for general thickness gauging and on pipes and have replaceable wear membrane for long life.

 

Stainless Steel INOX Twin Crystal Probes

Used in Echo-Echo and Single-Echo modes and focussed ultrasound beam with improved measurability on extreme back wall corrosion and pitting.

 

Probe Options

For optimum performance of the ultrasonic thickness gauge it is essential to utilise the appropriate probe for the specific material being tested. Here below are the probe options available.

Single crystal probes: 6 mm – 5 MHz (S5A)
  13 mm – 2.25 MHz (S2C (standard)), 3.5 MHz (S3C) or 5 MHz (S5C)
  19 mm – 2.25 MHz (S2D)
Twin crystal probes: 5 mm – 7.5 MHz (T7A)
  8 mm – 5 MHz (T5B (standard))
  12 mm – 2 MHz (T2C (for attenuative materials such as cast metals, plastics and composites))

 

Cygnus Cables

Using standard industry connectors the probe lead uses a custom made over moulded cable that offers superior flexibility and resistance to oils and ultraviolet light. The cable will not stiffen after exposure to ultraviolet light.

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