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Cygnus 4+

A durable, multi-mode UT gauge with live A-scan, ideal for through-coating and high-temperature inspections—without taking assets offline.
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The Cygnus 4+ is a powerful upgrade from the standard C4, combining multiple measurement modes with live A-scan visuals and data logging for advanced, in-field thickness inspections. Designed for harsh industrial environments, it provides accurate measurements through coatings, corrosion, and high temperatures—without shutdown or isolation.

Ideal for plant maintenance, marine inspections, ship hulls, pipelines, and refining infrastructure, the Cygnus 4+ supports hands-on or rope-access use and can operate safely in Class I, Div 2 explosive atmospheres.

With support for Cygnus’ High Temperature Probe, the 4+ is a go-to solution for in-service assessments across oil & gas, energy, and process sectors. Upgrade paths to the Cygnus 6+ are available to unlock even greater functionality.

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Specification

MEASURING MODES

  • Multiple-Echo: Ignores coatings up to 20 mm (0.8″)

  • Echo-Echo: Ignores coatings up to 1 mm (0.04″)

  • Single-Echo: For uncoated or heavily corroded materials

MATERIALS

  • Velocity range: 1,000 – 9,000 m/s (0.0390 – 0.3543 in/μs)

ACCURACY

  • ±0.05 mm (±0.002″) – in Multiple-Echo mode

  • ±0.1 mm (±0.004″) or 0.1% of reading – in Echo-Echo and Single-Echo modes

RESOLUTION

  • Multiple-Echo: 0.1 mm or 0.05 mm

  • Echo-Echo & Single-Echo: 0.1 mm or 0.01 mm

PROBES

  • Compatible with single crystal, twin crystal, and high temperature probes

MEASUREMENT RANGE (STEEL)

  • 0.8 – 250 mm (0.031 – 10 in), depending on probe and setup

CONNECTOR

  • 2 x Lemo 00

POWER

  • 3 x AA (R6) batteries

  • Battery Life: Approx. 10 hours

ELECTRONICS

  • Dual channel pulser

DISPLAY

  • 2.4” QVGA LCD (47 x 37 mm)

  • Sunlight-readable, front-mounted screen with Live A-scan

SIZE & WEIGHT

  • Size: 84 x 130 x 35 mm

  • Weight: 300 g (with batteries)

OPERATING TEMP.

  • -10°C to +50°C (14°F to 122°F)

DATA LOGGING

  • 5,000 measurements and A-scans per record

  • Up to 100 records (soft limit)

SOFTWARE

  • CygLink for A-scan viewing, data logging, PDF report generation, and statistical analysis

ENVIRONMENTAL RATING

  • IP67 sealed housing

  • Safe for use in Class I, Division 2, Group D locations (NFPA 70, Article 500)

  • MIL STD 810G tested:

    • Method 501.6 (High temp +55°C)

    • Method 502.6 (Low temp -20°C)

    • Method 507.6 (Humidity 95%)

    • Method 512.6 (Immersion 1 m for 30 mins)

    • Method 514.7 (Vibration)

    • Method 516.7 (Shock 20g, Transit drop 1.22 m)

COMPLIANCE & STANDARDS

  • Designed for EN 15317

  • CE, UKCA, RoHS compliant

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