Handheld Eddy Current Testing Equipment , Precise Eddy Current Flaw
Detector
It has been proved by research that, operate smart keyboards with
thumb is much easier than with other fingers because it has less
joints. HEF-301 takes this advantage to realize one-finger
operation. Moreover, with the latest digital electronic technology
and microcomputer technology, this instrument can offer not only
extremely convenient operation, but also reliable and stable high
performance.
HEF-301 is designed with advantages of impedance display mode and
micro power. It can be used for the inspection of various flaws.
The instrument case is made from light and wear-resistant material
to make it sturdy and durable.
HEF-301 has high sensitivity for discontinuities of metal
materials, such as cracks on copper pipe surface, puckers and scars
of steel pipe, pits, scratches, wear scars, transverse fissures or
separation layers etc.
Besides the man-machine dialog and the special digital electronic
balance technology, HEF-301 has a broad frequency range from 64Hz
to 5MHz which is appropriate for inspection requrements of various
metal materials. Since designed with full digital technology,
parameters for various applications can be saved for future use.
The selection of probe completely depends on users testing
requirements.
HEF-301 comply with stamdards: JB/T 10658 and EN1711.
In-built lithium polymer batteries, 5.5hours continuous working
time, removable battery can be charged with separate charger.
Specifications
Frequency range: 64 Hz~5 MHz (adjustable)
Gain range: 0~90 dB, adjustable in step of 0.5 dB
Phase rotation: 0~360 , adjustable in step of 1
Fast digital/analogue electronic balance
Impedance plan display window
Delay disappear of signal track
Menu type man-machine dialog
Communication by USB port (connect with USB and other removable
storage devices) or network port (connect with PC)
Digital filter
Optional in absolute probe, differential probe and self- comparing
probe
The alarm area is adjustable
Boundary dimension: 183x120x44 (mm)
Weight: 600g
Gross weight:4kgs
Operation step for phase analysis of block defect
Instrument: HEF-301 eddy current tester
Probe: pencil probe with frequency 50k-500KHz
Block: Al block
Operation:
1. Select “DISP.”, and set “Disp.Mode” as “Line”.
2. Select “PARA.”, set “Freq.Val.” as 100KHz, “Filter” as 8, “Gain”
as 40dB, “Lo.Pass” as 99.5Hz, other parameters as default.
3. Select “DEB.”, set “Pro.Gain” as 15dB, “Driver” as 3, other
parameters as default.
4. Select “OTHE.”, set “Y/X Ratio” as 2.0 (usually the Y/X Ratio is
between 2.0-5.0 for pencil probe, and 1.0 for welding probe), other
parameters as default.
5. Exit by pressing three times of exit key. Press ↑ key to set the
center point, a dialog box will come out. Press “OK”, and adjust
the center point to the bottom right corner by pressing the four
arrow keys.
6. Press Enter key to confirm. Place probe vertically on block area
without defect, press BAL key and shake the probe, shaking signal
will be on the screen. Select “ANAL.”, and adjust frame to select
shaking signal. Adjust phase to make shaking signal to horizontal
direction.
7. Enter into testing by pressing two times of exit key. Place
probe on block area without defect. Shake the probe to see shaking
signal on the level, and then scan the three cracks on the block.
Optional probes:
