ACS UK1401, Руководство по эксплуатации, Страница: 36 / 44

Ultrasonic tester UK1401
Operation Manual
36
ACOUSTIC
CONTROL
SYSTEMS
2
Select an area without visible defects (cracks, grooves, air pockets, etc.) on the surface of the object to be inspected. The
length of the area around the circle perimeter must be at least 180 mm, and height along the moving line must be at least 250
to 400 mm.
To measure the duration of the rising edge (front) of the signal, please perform the following:
- Press the instrument to the surface of the inspected object perpendicular to the main reinforcement and wait for 15-20 s.
- Remove the instrument from the inspected object. The measurement results will remain on the screen.
- Move the instrument in parallel up or down at a distance of 100 150 mm, and measure the second time.
- In the same manner, perform the third measurement, the duration of the third measurement shall be equal to the first
wavefront.
- Determine the average value of three measurement results.
- Compare the received value to the rated value specified in the settings (for sound concrete with strength value specified
by the project documentation, without significant structural damage).
If the received average measurement value of duration of the first front of the wave exceeds the above-named criterion
value, then there is evidence of micro cracks presence and decreased concrete strength.
2.4 TRANSFER DATA TO PC
To transfer the data from the instrument to PC, please perform the following: connect the instrument to PC via the USB A –
Micro B cable included in the delivery kit.
The OS will detect the instrument as an external removable disk named ACSYS DISC openable in the MS Windows “Explorer”
or any File Explorer.
The data can be read directly from the instrument, as well as copied to PC.
You can name the data file as required for copying.
Digital data are saved in the memory of the instrument in the CSV format (CommaSeparatedValues) convenient for export.
Further, the measurement results can be analyzed and processed by means of external programs (Figure 38). The data will be
saved in a single file named RESULTS.CSV. The results will be arranged in the file according to the number of the group.