The Cygnus 4 General Purpose Ultrasonic Thickness Gauge delivers accurate, thru-coating thickness measurements using the Cygnus-pioneered Multiple-Echo technique. This compact, rugged gauge is engineered for reliability in industrial, marine, and civil inspection environments where coating removal is impractical. Its intuitive menu system, vibrant LCD display, and robust IP67-rated housing make it simple to operate even in challenging field conditions. Designed for maintenance professionals, inspectors, and engineers, the Cygnus 4 provides dependable, repeatable results with minimal setup.
Multiple-Echo technique to perform accurate, thru-coating measurements without removing paint or protective layers
Deep Coat function enables measurement through coatings up to 0.8 inch (20 mm) thick
Simple, one-point calibration with no zeroing required for fast setup
Min/Max measurement limit functions with both visual and vibration alerts
Large, bright 2.4-inch color LCD display for clear readability in all conditions
Rugged, shock and impact-resistant housing tested to MIL-STD-810G
Waterproof and dustproof to IP67 for dependable field use
Compatible with Cygnus stainless steel single-crystal probes featuring replaceable membranes
Durable probe cables resist oil and UV damage, maintaining flexibility over time
Upgradeable design — can be field-upgraded to Cygnus 4+ or 6+ models for added functionality
Ideal for plant maintenance inspections requiring fast, accurate wall thickness readings through paint and coatings
Used extensively in civil engineering for assessing structural integrity of bridges, supports, and infrastructure
Suited for oil, gas, and storage tank inspections where coating removal is not practical
Widely applied in shipping and marine surveys for hull, deck, and vessel inspection tasks
Perfect for general-purpose ultrasonic testing across metals and engineering materials
| Cygnus 4 General Purpose Ultrasonic Thickness Gauge Technical Specifications | |
|---|---|
| Materials: | Velocities from 0.0390 – 0.3543 in/μs (1,000 – 9,000 m/s) |
| Accuracy: | ±0.002 inch (±0.05 mm) in Multiple-Echo mode when calibrated and measuring the same material as calibrated on |
| Resolution: | 0.005 inch (0.1 mm) or 0.002 inch (0.05 mm) |
| Probe Options: | Single crystal probes |
| Measurement Range in Steel: | 0.040 – 10 inch (1 – 250 mm) depending on probe, configuration, material, and temperature |
| Connector: | 2 × Lemo 00 |
| Power: | 3 × AA / R6 batteries |
| Battery Life: | Approximately 10 hours continuous measurement |
| Electronics: | Dual channel pulser |
| Display: | 2.4 inch QVGA LCD, 1.85 × 1.46 inch (47 × 37 mm) |
| Size: | 3.3 × 5.1 × 1.4 inch (84 × 130 × 35 mm) |
| Weight: | 10.5 oz (300 g) including batteries |
| Operating Temperature: | 14°F to 122°F (–10°C to +50°C) |
| Environmental Rating: |
IP67 MIL-STD-810G Method 501.6 (high temperature +131°F / +55°C) MIL-STD-810G Method 502.6 (low temperature –4°F / –20°C) MIL-STD-810G Method 507.6 (humidity 95%) MIL-STD-810G Method 512.6 (immersion 3.3 ft / 1 m for 30 minutes) |
| Shock and Impact: |
MIL-STD-810G Method 514.7 (vibration) MIL-STD-810G Method 516.7 (shock 20 g) MIL-STD-810G Method 516.7 (transit drop 4 ft / 1.22 m) |
| Standards: | Designed for EN 15317 |
| Compliance: | CE, UKCA, RoHS |
| Warranty: | 3 years on gauge and 6 months on probe |
| Weight: | 11lbs (5kg) |
To purchase the Cygnus 4 General Purpose Ultrasonic Thickness Gauge, click on the link