ultrasonic testing
Cygnus 6 Thickness Gauge

Cygnus 6+ Thickness Gauge


The Cygnus 6+ PRO thickness gauge boasts a full range of useful features for professional users, including A-scan, B-scan and comprehensive data logging. Used with Cygnus High Temperature probe, the Cygnus 6+ PRO can measure remaining wall thickness of high-temperature, in-service assets without shutdown or isolation.
Ideal for use in plant maintenance, civil engineering, ship inspections, oil & gas facilities. High-temperature, in-service thickness surveys across refining, oil & gas, energy and process sectors.

**Errors and omissions excepted (E&OE)

High Temperature Measurement

  • Using the NEW T5B-MAUH high temperature probe, measurements can be taken on hot surfaces of up to 300°C (572°F).
  • No cooling period required – reducing inspection time and facilitating more effective measurement
  • Option to use standard cable or more robust, braided cable.


Comprehensive Data Logging

  • Linear, 2D grid and template based logging
  • 16 grid patterns available
  • Add radial points to any measurement to further investigate immediately an area of interest or heavy corrosion
  • Eight user-defined text comments to attach to any measurement point
  • Auto-log feature
  • Saves measurements and A-scans
  • Records stored on an SD card
  • CygLink software used to transfer and manage data.


Three Versatile Measuring Modes

  • Multiple-Echo mode uses three error checked back wall echoes to provide the most reliable and accurate remaining thickness measurements, with no need to remove coatings (up to 20 mm thick (0.8 inch))
  • Single-Echo mode is ideal for measuring uncoated metals with heavy front and/or back-wall corrosion. Also effective on a range of cast metals, plastics and composites
  • Echo-Echo mode works best for measuring heavily corroded metals through thin coatings of up to 1 mm (0.04 inch) thick, ideal for measuring painted metals with heavy back wall corrosion.
  • Multiple-Echo mode for accurate, through-coat measurements as specified by Classification Societies
  • Echo-Echo and Single-Echo modes for heavily corroded metals with a thin or no coating
  • Temperature Compensation feature for measurement on hot materials
  • Deep Coat function ignores coatings up to 20 mm (0.8 inch) thick
  • Manual and automatic gain control
  • Min/max measurement limit functions with visual and vibrate alert
  • Uses single and twin crystal probes
  • Freeze function
  • One and two point calibration
  • Bluetooth™ for data transfer
  • Large front LCD display and an end-mounted LCD display with grayscale setting for bright sunlight
  • Safe operation in explosive atmospheres: Class 1, Division 2, Group D locations only, as defined in NFPA 70, Article 500
  • Water and dust tight IP67 housing
  • Shock and impact proof to US MIL STD 810G
Materials Velocities from 1,000 – 9,000 m/s (0.0390 – 0.3543 in/us)
Accuracy ±0.05 mm (±0.002 inch) – in Multiple-Echo measurement mode, when calibrated and measuring the same material as calibrated on
±0.1 mm (±0.004 inch) or 0.1% of thickness measurement whichever is the greatest – in Single-Echo & Echo-Echo measurement modes, when calibrated and measuring the same material as calibrated on
Measuring Modes

Multiple-Echo using 3 echoes to ignore coatings up to 20 mm (0.8 inch) thick.
Echo-Echo using 2 echoes to ignore coatings up to 1 mm (0.04 inch) thick.
Single-Echo using 1 echo

Resolution Multiple-Echo mode – 0.1 mm (0.005 inch) or 0.05 mm (0.002 inch)
Single-Echo and Echo-Echo modes – 0.1 mm (0.005 inch) or 0.01 mm (0.001 inch)
Probe options Single crystal probes, Twin crystal probes and High temperature probe
Measurement Range in Steel 0.8 – 250 mm (0.031 – 10 inch) depending on selected probe and configuration, material and temperature
Connector 2 x Lemo 00
Power 3 x AA / R6 batteries
Battery Life 10 hours continuous measurement
Electronics Dual channel pulser
Display 2.4 inch QVGA LCD and end-mounted rotatable LCD 25.58 x 6.38 mm
Size 84 x 130 x 35 mm (3.3 x 5.1 x 1.4 inch)
Weight 300 g (10.5 oz) (inc. Batteries)
Operating Temp. -10°C to 50°C (14°F to 122°F)
Data Logging 5,000 measurements and A-scans per record
Max number records: 100 (soft limit)
Computer Software CygLink allows remote logging and viewing of A-scan graphs
Survey and report generation to PDF file
Graphic analysis of data and statistical calculations
Environmental Rating IP67
Safe operation in Explosive Atmospheres: Class I, Division 2, Group D Locations only, as defined in the National Fire Protection Association Code (NFPA 70), Article 500. Tested using MIL-STD-810G, Method 511.5, Procedure I
MIL STD 810G Method 501.6 (high temp +55°C (131°F))
MIL STD 810G Method 502.6 (low temp -20°C (-4°F))
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)
MIL STD 810G Method 516.7 (shock 20g)
MIL STD 810G Method 516.7 (transit drop 1.22 m)
Standards Designed for EN 15317
Compliance CE, UKCA, RoHS

Cygnus 6+ Thickness Gauge

  • Basic Gauge Kit

    • Cygnus 6+ gauge fitted with hand strap
    • Operating manual
    • Neck strap
    • Accessory pouch, containing; 3 x AA batteries, blue couplant gel
    • USB memory stick with CygLink installer
    • USB Lead


    Kit supplied with Single Element Probe

    • Ultrasonic probe
    • Moulded probe cable
    • 15 mm (or ½ inch) steel test block
    • Spare membranes
    • Membrane key
    • Membrane couplant.


    Kit supplied with Twin Element Probe

    • Ultrasonic probe
    • Moulded probe cable.