Name: ED-1mm, ED-1mm-R – Eddy Current Flaw Detectors
Brand: NDT1 KRAFT

Description

The ED-1mm series is designed for highly localized eddy current inspection and depth measurement of short surface-breaking defects on metallic components made of ferromagnetic steels and cast irons, aluminum and titanium alloys, and low-magnetic stainless steels. The 1 mm sensing element provides a small area of influence, allowing the detector to identify defects in restricted inspection zones and distinguish closely located surface features more effectively than larger-sensing-element models.

The devices are particularly suitable for inspection of small parts, localized areas and components where detection of short cracks is the primary requirement. The defect depth measurement range is 0.2–2 mm, while defects as short as 2 mm can be detected.

Features

Wireless eddy current flaw detector for surface crack detection and depth measurement
Detection and depth measurement of surface-breaking defects
Highly localized 1 mm sensing element
Detection of short and small surface defects
Minimum detectable defect length from 2 mm
Minimum detectable defect depth down to 0.05 mm for steel
Defect depth measurement from 0.2 to 2 mm
Optimized for applications where high spatial resolution is required
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-1mm	ED-1mm-R
Stand-alone operation or operation with display device
Sensitive element type	absolute
Sensitive coils diameter, mm	1
Radius of influence area, mm	2.5
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, MHz:
steel profile	7.5
aluminum profile	5
titanium profile	10
stainless steel profile	7.5
Minimum detectable defect depth, mm:
steel profile	0.05
aluminum profile	0.15
titanium profile
stainless steel profile
Minimum detectable defect length, mm	2
Defect depth measurement resolution, mm	0.01
Minimum defect length for depth measurement, mm	8
Defect depth measurement range, mm	0.2-2
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	0.3
for defect detection	0.5
Maximum surface roughness Rz, µm	20
High-pass filter cutoff frequency during scanning, Hz	5
Scanning speed for defect detection, mm/s	3 to 150
Scanning speed for defect depth measurement, mm/s	up to 15
Overall dimensions, max., mm	156 × 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, MHz	1; 1.5; 2; 3; 4; 5; 6; 7.5; 10
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 specimens MMD-110-Fe, MMD-110-Al, MMD-110-Ti
Operating manual
Storage and carrying case

Catalogue