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sales@ndtone.comED-3mm, ED-3mm-REddy Current Flaw Detectors
ED-3mm, ED-3mm-REddy Current Flaw Detectors
The ED-3mm and ED-3mm-R are wireless eddy current flaw detectors for detection and depth measurement of surface cracks on rough metallic surfaces. The 3 mm sensing element provides a balance between local defect sensitivity and stable inspection of uneven surfaces, with defect depth measurement from 0.5 to 5 mm.
Description
The ED-3mm series is designed for eddy current inspection of components with rough or irregular surfaces where a very small sensing element may be overly sensitive to local surface variations. Its 3 mm sensing element provides reliable detection and depth measurement of surface-breaking defects while maintaining good localization of the inspected area.
The detectors measure defect depths from 0.5 to 5 mm and can be used on surfaces with roughness up to Rz 320 µm. Inspection can also be performed through dielectric coatings, with defect detection possible through coatings up to 3 mm thick.
Features
- Detection and depth measurement of surface-breaking defects
- Designed for crack detection and depth measurement on rough surfaces
- 3 mm sensing element for a balanced combination of sensitivity and coverage
- Defect depth measurement from 0.5 to 5 mm
- Inspection of surfaces with roughness up to Rz 320 µm
- Scanning speed up to 500 mm/s for defect detection
- Inspection through dielectric coatings and surface contamination
- Suitable for ferromagnetic steels, cast iron, aluminum and titanium alloys, and stainless steels
- Material selection for adapting the device to the inspected object
- Direct display of crack depth
- Audible and vibration alarms when the defect threshold is exceeded
- Bluetooth connection to smartphones and tablets
- Dedicated application providing the functionality of an amplitude-phase eddy current flaw detector
- Compact design for field inspection
- Impact-resistant ergonomic housing
- Ceramic protective cap
- Extended operating temperature range
Basic technical characteristics
| Parameter | ED-3mm | ED-3mm-R |
|---|---|---|
| Stand-alone operation or operation with display device | ||
| Sensitive element type | absolute | |
| Sensitive coils diameter, mm | 3 | |
| Radius of influence area, mm | 8 | |
| Materials parameters of tested object: | ||
| steel | μ ≥ 10 rel. units; σ > 0.5 MS/m | |
| aluminum | μ ≈ 1 rel. unit; 3.5 < σ < 60 MS/m | |
| titanium | μ ≈ 1 rel. unit; 0.5 < σ < 5 MS/m | |
| stainless steel | μ < 10 rel. units; 0.5 < σ < 5 MS/m | |
| Excitation frequency, kHz: | ||
| steel profile | 750 | |
| aluminum profile | 500 | |
| Minimum detectable defect depth, mm | ||
| steel profile | 0.1 | |
| aluminum profile | 0.2 | |
| Minimum detectable defect length, mm | 6 | |
| Defect depth measurement resolution, mm | 0.01 | |
| Minimum defect length for depth measurement, mm | 24 | |
| Defect depth measurement range, mm | 0.5-5 | |
| Maximum permissible error of defect depth measurement | ± (0.15Z + 0.1) mm, where Z is the actual defect depth | |
| Maximum dielectric coating thickness, mm: | ||
| for defect depth measurement with specified accuracy | 1 | |
| for defect detection | 3 | |
| Maximum surface roughness Rz, µm | 320 | |
| High-pass filter cutoff frequency during scanning, Hz | 5 | |
| Scanning speed for defect detection, mm/s | 10 to 500 | |
| Scanning speed for defect depth measurement, mm/s | up to 50 | |
| Overall dimensions, max., mm | 150 × 30 × 30 | 180 × 30 × 30 |
| Weight, max., kg | 0.1 | |
| Indication | colour IPS display, audible alarm, vibration alarm | |
| Display size | 0.96″ | |
| Display resolution | 80 × 160 | |
| Operating conditions: | ||
| ambient temperature | -30 to +50 °C | |
| relative humidity | 40 to 80 % | |
| Degree of protection | IP67 | |
| Continuous operating time from built-in Li-ion battery | ≥ 12 h | |
| Operation with display device | ||
| Excitation frequency, kHz | 10, 15, 20, 30, 50, 75, 100, 150, 200, 500, 750 | |
| Pre-amplification, dB | 6–36, step 6 | |
| X/Y gain, dB | 0–40, step 0.1 | |
| Phase, ° | 0–359.9, step 0.1 | |
| High-pass filter, Hz | 0–10, step 1 | |
| Low-pass filter, Hz | 10–240, step 1 | |
| Alarm types: | ||
| complex plane display | gate, double gate, sector, double sector | |
| time-base display | threshold, mirrored threshold | |
| Overall dimensions of display device, max., mm | 180 × 90 × 25 | |
| Weight of display device, max., kg | 0.5 | |
| Display size | 6.5″ | |
| Display resolution | 2400 × 1800 | |
| Operating conditions: | ||
| ambient temperature | -30 to +50 °C | |
| relative humidity | 40 to 80 % | |
| Degree of protection | IP68 | |
| Continuous operating time from built-in Li-ion battery | ≥ 30 h | |
Delivery set
- Eddy current flaw detector
- Display device (rugged smartphone with pre-installed software)
- Charging device with USB-C to USB-C cable
- Reference defect standard MMD-220-Fe
- Operating manual
- Storage and carrying case
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