The U520A auto testing system is an upgrade of the U520 with the
inclusion of an auto-raising system. The use of the mechanical
pulley auto-raising system facilitates the movement and precision
location of the probe inside acoustic testing tubes. When moving
the probe, pile testing system may auto-record the acoustic
parameters and waveform of every testing point according to pre-set
spacing between test points. The test speed has been improved
markedly. The test of a 100 meters profile, with 10 points in every
10 meters, requires only 2 minutes to complete. With this system,
1~2 people may complete the task which usually requires 2~3 person
to complete. Furthermore, the whole profile test results are
available at anytime, even during the test process, by simply
referring to the curves displayed in the screen during the testing
U520A pile auto-testing system is mainly utilized in the
auto-testing of the integrity of pile using the One Hole Acoustic
Penetration Method. All other functions of U520A are the same as
Introduce two methods to attach depth counters (acoustic testing
tube mouth and tripod), convenient and rapid, suitable for a
variety of on-site situations.
Guide wheel inside the pipe mouth assures the movement and
convenient location of the probe. This reduces the wear of the
cable inside the pipe mouth and lengthens the lifetime of the
The spacing between test points may be arbitrarily set. The pulley
system smoothly and continuously raises the probe at a rapid pace
(the max speed is 1.0 m/s)
Real-time display and automatic saving of the plotted graph of pile
integrity, the location of test points, the acoustic wave transit
time of the first wave, the waveform, the wave range etc.
Arbitrarily retest and redisplay of the sampling waveform of every
test point. Preventing the error in on-site testing and on-site
judgment. Convenient and rapid.
Automatic continuous sampling, saving testing information of every
test point such as depth, acoustic parameter, waveform etc.
producing a stable waveform, with no distortion, allowing accurate
judgment of the acoustic parameters, with a good level of
consistency, greatly improving the speed of on-site detection.
Automatically save the data and waveform of test points during
testing procedure, ensuring that no data is lost in the event of a
sudden loss of power.
It is possible to access the analyses interface at anytime during
the testing procedure, and to perform a simultaneous analysis of
every profile which has been tested.
For convenience and reliability the data inside the apparatus are
managed in the order, construction site, pile number, profile.
Double channel auto-testing available, which improves the
efficiency of detection. .
ZBL – U520A
( automatic pile-testing system)
ZBL – U520
ZBL – U510
Main control unit
industrial-grade dedicated system
6.4 Inch high brightness TFT true color LCD
Automatic pile-testing record system
Dual-channel automatic pile-testing record system
1 emitter + 2 receiver + 1 external-trigger
1 emitter + 1 receiver
Signal trigger, external trigger
Sampling interval (period)
0.05μs~400μs ,14 adjustable settings
10 ~250 kHz
Emission voltage (V)
65, 125, 250, 1000 v adjustable
20 μs ~ 20 ms adjustable
256 M ( CF card ) + 1 G ( memory card )
Shortcuts keys + photoelectric-knob
Built-in lithium battery≥6hrs
Extenal port:9V DC
Alternating Current Power
1.8 kg (including internal battery)