Boiler Tubes Heat Exchanger Tube Multi-Frequency Mixed Frequency
Eddy Current Flaw Detector HEF-24ET
General introduction
The intelligent multi-frequency eddy current detector is a new
generation of eddy current nondestructive testing equipment. With
the adoption of the most advanced digital electronic technology,
multi-frequency eddy current technology, and microprocessor
technology, it can achieve effective inner wall and outside wall
cracks detection of the ferromagnetic and non- ferromagnetic metal
pipes in real time. It is a complete set of eddy current testing
system, but also integrated with regular frequency, ordinary
multi-channel eddy current testing system to be a new system of
high-performance, multi-purpose, intelligent eddy current testing
system.
It has a number of relatively independent test channels and can get
the absolute and differential eddy current signals from the
corresponding test channels. The testing frequency ranges from 50Hz
to 10MHz. instruments for is also featured with weak signals
amplification function and strong anti-interference ability. The
through-type probe is usually applied for pipeline inspection for
the high sensitivity of the pipe wall, the outer surface cracks,
pits, corrosion, thinning and inside surface defects of the wall
material. For the features of automatic detection, high sensitivity
and stable performance, it is particularly applicable to nuclear
energy, electric power, petrochemical, aerospace, aviation and
other sectors for the various in service tubes ( copper, titanium, aluminum, zirconium, etc.) and metal parts flaw detection and wall thickness
measuring, and also a variety of ferromagnetic pipe flaw detection,
analysis and evaluation, such as: boiler tubes, heat exchanger tube bundle, underground pipes and cast iron pipe for pre-service and
in-service testing.
The instrument has optional multiple testing procedures, the same
screen multi-window display mode, the same screen to display more
than one phase of the eddy current signal, the magnitude of changes
in its waveform. Multiple relatively independent detection
channels, up to four frequency mixing unit which is able to
suppress interference signals generated by the support plate,
dents, sediment and pipe cold in-service inspection,
discriminating, and improve the evaluation accuracy of eddy current
testing signal. And because of using a fully digital design,
standard testing procedures can be set up within the instrument to
facilitate the recall for site testing.
Main parameters
★ Frequency:50 Hz～10 MHz
★ Probe drive (motivation) Level:1～16
★ Digital filtering: low-pass (0Hz to 2000Hz), high-pass (0Hz to
2000Hz)
★ Gain ratio:(X/Y)0.1～10.0
★ Delay marking: 0.001～120.000s
★ Marking length:0.1m～49.9m
★ Step:0.01mm～1000.0mm
★ Automatic balance:-1～20 second
★ Keep Point No.:1～4096
★ Replay speed ratio:-300～300
★ Time base speed:1Pxl～16384Pxl
★ Alarm delay: 10ms～60000ms
★ Marking type:tine or length
★ Time of duration:1ms～10000ms
★ Continuous distance:0mm～65535mm
★ Probe type:Differential or absolute
★ Filter:0～30000
★ Speed measuring port:P1～P8
★ Clock type:Internal Clock or(S1～S8)External clock
★ Front end delay:0ms～3600000ms
★ Tail end delay:0ms～3600000ms
★ End balance:on or off
★ Qualified statistics:W1～W16
★ Background coordinates: No, polar coordinates, or Cartesian
coordinates
★ Variety of display: impedance, time base (A scan,B scan,C scan)
★ The calculation function of detection length
★ Multiple independent optional frequency (extensible 8 channel)
★ Real-time memory to track the eddy current signals
★ Gain range: 0 ~ 99dB continuously adjustable per file 0.1dB steps
in phase setting process, the screen instantly displays the
impedance plane and the magnitude of the eddy current signals after
the gain change value, convenient and intuitive
★ Phase rotation: 0 ~ 359 ° continuously adjustable, precision of 1
°.In the phase set-up process, the screen instantly displays the
phase value of the phase change of the impedance plan and eddy
current signal, convenient and intuitive
★ Fast digital / analog electronic balance
★ Have non-constant-amplitude phase / amplitude alarm domain
★ Multiple hardware alarm output, with delay hardware output alarm,
real-time hardware output alarm
★ Memory path delay blanking feature, solid lines, blanking two
display modes for choice
★ Operating in both English and Chinese languages, online help
★ Operating system :Win8,Win10
★ Automatic signal amplitude and phase measurements, and eddy
current signals slowly (adjustable) playback
★ Can be connected with the absolute, differential and self-
comparison coils, including through type, interpolation type, flat
type, point type, rotating type probes
★ Mass storage of various test procedures and test data
★ Automatic phase / defect depth curve shows
★ Cartesian coordinates, polar coordinates and no background for
selection
★ Display color can be set according to customer’s need
★Automatic calendar, time display
★Optional data analysis system
Applications
Particularly applicable to nuclear energy, electric power,
petrochemical, aerospace, aviation and other departments in the
service of copper, titanium, aluminum, zirconium and other pipes,
metal parts of the flaw detection and wall thickness measurements,
and a variety of ferromagnetic pipeline testing, analysis and
evaluation.
Standard delivery
Main unit HEF-24ET
Bobbin probe with 2 meters cable
Battery charger
English operation manual
HUATEC calibration certificate
Carrying case
Optional accessories
Bobbin ECT-standard probe- Ø 9 mm LF-15 m nylon cable.
Bobbin ECT standard probe, Ø 10.8 mm LF, 15 m nylon cable
Bobbin ECT standard probe, Ø 15 mm UF, 15 m nylon cable
Bobbin ECT standard probe, Ø 21 mm MF, 15 m nylon cable
Calibration block in carbon steel, stainless steel, copper etc.
Any other size probes depending on customer request
