Name: ED-L20mm, ED-L30mm, ED-L40mm – Eddy Current Flaw Detectors
Brand: NDT1 KRAFT

Description

The ED-L series is designed for rapid eddy current inspection of large-area products and structures where efficient surface coverage is more important than highly localized inspection. Large differential sensing elements enable detection and depth measurement of extended surface-breaking defects while allowing significantly higher scanning speeds than smaller ED-series models.

The series includes three versions with 20, 30 and 40 mm sensing elements. Increasing the sensing-element size increases the area of influence, permissible coating thickness and maximum scanning speed, while reducing sensitivity to the smallest defects. This allows the operator to select the optimum balance between defect sensitivity and inspection productivity.

ED-L20mm provides the highest defect sensitivity within the L-series and is suitable when relatively small defects must still be detected during large-area inspection. It measures defect depths from 0.5 to 5 mm and detects defects through dielectric coatings up to 4 mm thick.

ED-L30mm provides a balanced combination of coverage, defect-depth capability and scanning speed. It measures defects from 0.5 to 10 mm deep, operates on rough surfaces up to Rz 640 µm and allows defect detection through coatings up to 6 mm thick.

ED-L40mm provides the widest inspection area and the highest scanning speed of the series. It is intended for rapid inspection of very large surfaces and extended defects, with a defect depth measurement range of 0.5–10 mm and defect detection through dielectric coatings up to 8 mm thick.

Features

Wireless eddy current flaw detector for surface crack detection and depth measurement
Detection and depth measurement of surface-breaking defects
Wide-coverage eddy current inspection of large-area components
High scanning speeds for efficient inspection of large surfaces
Three sensing-element sizes for different sensitivity/coverage requirements
Inspection through dielectric coatings and surface contamination
Suitable for steels and aluminum
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-L20mm	ED-L30mm	ED-L40mm
Stand-alone operation or operation with display device
Sensitive element type	differential
Sensitive coils diameter, mm	20	30	40
Radius of influence area, mm	40	60	80
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
Excitation frequency, kHz:
steel profile	100
aluminum profile	100
Minimum detectable defect depth, mm:
steel profile	0.5	1	2
aluminum profile	0.5	1	2
Minimum detectable defect length, mm	10	15	20
Defect depth measurement resolution, mm	0.01
Minimum defect length for depth measurement, mm	20	30	40
Defect depth measurement range, mm	0.5-5	0.5-10
Maximum permissible error of defect depth measurement	± (0.2Z + 0.5) mm, where Z is the actual defect depth
Maximum dielectric coating thickness, mm:
for depth measurement with specified accuracy	2	3	4
for defect detection	4	6	8
Maximum surface roughness Rz, µm	160	640
High-pass filter cutoff frequency during scanning, Hz	5
Scanning speed for defect detection, mm/s	20 to 1000	30 to 1500	40 to 2000
Scanning speed for defect depth measurement, mm/s	up to 10	up to 15	up to 20
Overall dimensions, max., mm	147 × 30 × 30	148 × 40 × 30	150 × 50 × 38
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 standard
Operating manual
Storage and carrying case

Catalogue