Sensu 2 Subsea ACFM Probes
Sensu 2 subsea ACFM probes provide weld inspection with onboard configuration memory and application-specific geometries for Amigo 2 and U41 instruments.

Product overview
Sensu 2 Subsea ACFM Probes are an intelligent probe family for subsea weld inspection with Amigo 2 and U41 instruments. Their electronics store probe configuration data onboard, while updated cables and connectors retain familiar probe body designs. The range is rated IP68 down to 300m underwater.
The family uses ACFM with probe frequencies selected for the weld material: the listed ferritic inspection variants operate at 5 kHz, while applicable austenitic inspection variants operate at 50 kHz. Compared with legacy probes, the page describes faster inspection, cleaner signals and higher signal-to-noise ratio. The Mini-Array provides four ACFM rows and 36 mm coverage using the X field only, and requires an instrument version compatible with array probes.
Probe geometry is tailored to the inspection location. Weld and Tight Access models incorporate stabilizers and a wider field, with the latter adding a tapered, angled nose for restricted access. The Ground Weld model uses a narrow nose with deeper reach for ferritic grounded welds only. Pencil and Micro Nose Pencil models offer ceramic tips and three nose configurations; the Micro Nose version targets specialist applications requiring high probability of detection on shallow flaws.
Key capabilities
Onboard probe memory
Probe data and configuration information are stored in the probe electronics.
Subsea rating
The probe range is rated IP68 down to 300m underwater.
Updated electronics
Familiar probe bodies incorporate updated electronics, cables and connectors.
Faster inspection
The range is described as faster than legacy probes, with two outputs and higher signal-to-noise ratio.
Mini-array coverage
The Mini-Array combines four ACFM rows with 36 mm coverage for ferritic welds using the X field only.
Restricted-access geometry
The Tight Access Probe has a tapered, angled nose, stabilizers and a wider field.
Ground weld access
The Ground Weld Probe has a narrow, deeper-reaching nose for ferritic grounded weld inspection.
Ceramic pencil tips
Pencil and Micro Nose Pencil probes feature wear-resistant ceramic tips in straight, right-angle and transverse configurations.
Shallow-flaw applications
Micro Nose Pencil probes address specialist weld inspection requiring high probability of detection on shallow flaws.
Published technical specifications
Values as published by Eddyfi Technologies. Where models or variants differ, each is listed separately.
General
- Outputs
- 2 outputs
- Subsea rating
- IP68 down to 300m underwater
Sensu 2 Mini-Array
- Array
- 4 ACFM rows
- Field
- X field only
- Coverage
- 36 mm
- Frequency
- 5 kHz (Ferritic welds only)
- U41 integrated cable option
- U41 compatible, watertight connector, 5m long
- Amigo 2 integrated cable option
- Amigo 2 compatible, topside connector, 50m long
Sensu 2 Weld probe
- Coverage
- 15 mm
- Ferritic frequency
- 5 kHz Ferritic weld inspection
- Austenitic frequency
- 50 kHz Austenitic weld inspection
- U41 integrated cable option
- U41 compatible, watertight connector, 5m long
- Amigo 2 integrated cable option
- Amigo 2 compatible, topside connector, 50m long
Sensu 2 Tight Access Probe
- Coverage
- 15 mm
- Ferritic frequency
- 5 kHz Ferritic weld inspection
- Austenitic frequency
- 50 kHz Austenitic weld inspection
- U41 integrated cable option
- U41 compatible, watertight connector, 5m long
- Amigo 2 integrated cable option
- Amigo 2 compatible, topside connector, 50m long
Sensu 2 Ground Weld Probe
- Coverage
- 15 mm
- Frequency
- 5 kHz Ferritic weld inspection
- U41 integrated cable option
- U41 compatible, watertight connector, 5m long
- Amigo 2 integrated cable option
- Amigo 2 compatible, topside connector, 50m long
Sensu 2 Pencil Probes
- Nose configurations
- 3 available nose configurations: Straight, Right angle, transverse
- Coverage
- 15 mm
- Ferritic frequency
- 5 kHz Ferritic weld inspection
- Austenitic frequency
- 50 kHz Austenitic weld inspection
- U41 integrated cable option
- U41 compatible, watertight connector, 5m long
- Amigo 2 integrated cable option
- Amigo 2 compatible, topside connector, 50m long
Sensu 2 Micro Nose Pencil Probes
- Nose configurations
- 3 available nose configurations: Straight, Right angle, transverse
- Coverage
- 10 mm
- Ferritic frequency
- 5 kHz Ferritic weld inspection
- Austenitic frequency
- 50 kHz Austenitic weld inspection
- U41 integrated cable option
- U41 compatible, watertight connector, 5m long
- Amigo 2 integrated cable option
- Amigo 2 compatible, topside connector, 50m long
- Integrated U41-compatible cable with watertight connector, 5m long, listed for all six probe types.
- Integrated Amigo 2-compatible cable with topside connector, 50m long, listed for all six probe types.
- Straight, right-angle and transverse nose configurations for Pencil and Micro Nose Pencil probes.
- Amigo 2
- U41
- U41D/DA
- Subsea rating is IP68 down to 300m underwater.
- Mini-Array requires AMIGO2 or U41 versions compatible with array probes.
- Mini-Array is for ferritic welds only at 5 kHz and uses the X field only.
- Ground Weld Probe is for ferritic grounded weld inspection only at 5 kHz.
- For Weld, Tight Access, Pencil and Micro Nose Pencil probes, the listed frequencies are 5 kHz for ferritic weld inspection and 50 kHz for austenitic weld inspection.
Compatibility lists only items named by Eddyfi for this product; confirm configuration with EMUS before ordering.
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CompareHow EMUS supports this
Equipment is only part of the answer. Every system we supply is backed by regional engineering, service and application support.
Mechanical, electrical, environmental setup done right the first time.
Qualification and acceptance testing against real criteria.
Operator and application training built around your parts.
Traceable calibration to keep measurements audit-ready.
Preventive and corrective service across the Balkan region.
Method development and problem-solving with our engineers.
Eddyfi Technologies
Part of the Eddyfi Technologies portfolio, represented by EMUS across the Balkan region.
Application Notes & resources
Official application notes and technical literature for Sensu 2 Subsea ACFM Probes.
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