Name: ED-6mm – Eddy Current Flaw Detector
Brand: NDT1 KRAFT

Description

The ED-6mm is designed for detection and depth measurement of surface-breaking defects on very rough metallic components and for inspection of deeper cracks. It is suitable for ferromagnetic steels and cast irons, aluminium and titanium alloys, and low-magnetic stainless steels.

The 6 mm sensing element provides a larger inspection area and improved stability on rough surfaces compared with the ED-1mm and ED-3mm versions. The device measures defect depths from 0.5 to 10 mm, supports inspection on surfaces with roughness up to Rz 640 µm and can detect defects through dielectric coatings up to 10 mm thick.

The ED-6mm is therefore the preferred model when deeper defects, severe surface roughness or relatively thick non-conductive coatings are more important than the high localization provided by the smaller ED-1mm and ED-3mm sensing elements.

Features

Designed for inspection of very rough surfaces and deep surface defects
Defect depth measurement up to 10 mm
Inspection of surfaces with roughness up to Rz 640 µm
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-6mm
Stand-alone operation or operation with display device
Sensitive element type	absolute
Sensitive coils diameter, mm	6
Radius of influence area, mm	18
Material parameters of the test 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	100
aluminum profile	100
Minimum detectable defect depth, mm:
steel profile	0.2
aluminum profile	0.5
Minimum detectable defect length, mm	18
Defect depth measurement resolution, mm	0.01
Minimum defect length for depth measurement, mm	40
Defect depth measurement range, mm	0.5-10
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	3
for defect detection	10
Maximum surface roughness Rz, µm	640
High-pass filter cutoff frequency during scanning, Hz	5
Scanning speed for defect detection, mm/s	20 to 1000
Scanning speed for defect depth measurement, mm/s	up to 100
Overall dimensions, max., mm	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
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-230-Fe
Operating manual
Storage and carrying case

Catalogue