Alternating current electric field system

Eddyfi - U41

Modernizing Subsea ACFM

Modern underwater ACFM solution: Specifically designed for underwater surface crack inspection using recognized Alternating Current Field Measurement technology.
Supports multiple probes simultaneously: Up to 3 probes can be connected , reducing probe change time during underwater deployment.
Improved electronics: Faster data acquisition speeds and significantly higher resolution compared to the previous generation.
Operating depth up to 300 m: IP68 standard allows for stable operation in deep-sea environments.
ASSIST software: Supports data analysis and provides detailed, visual reports (see accompanying documentation).
Flexible deployment capabilities: Versions are available for both diver and ROV , suitable for complex underwater structural inspection tasks.

Underwater crack detection and sizing: particularly in subsea structural welds.
Inspections on offshore components: such as foundations, caissons, spudcans, pipe joints, bridge layouts, and frame structures.
Inspect ferritic or austenitic welds that are difficult to access underwater.
Increased inspection productivity compared to traditional methods (MPI).

Specification
Connectors	3 × SENSU2 UW
Max umbilical length	U41D/DA 450 m (1476 ft)
Array (rows mini)	U41DA: 4 × rows mini. U41D: no array
Communications	VDSL only (downhole)
Depth rating	300 m (984 ft)
Topside unit type	Topside unit D
Bottle dimension with lifting cage	156 × 156 × 430 mm
Bottle dimension without lifting cage	156 × 156 × 292 mm
Bottle weight (in air)	9.2 kg (20.3 lb)
Frequency	U41D: Single. U41DA: Dual
Operating temperature range	0–45°C (32–113°F)
Probe cable length	5 m (16 ft)
Power requirements	Topside: 110 V AC/400 mA. Bottle: 48 V DC/1 A