Novatest S.r.l.
Manual for Multichannel Ultrasonic Pile Integrity Tester
45
3.6 Zero set
Zero acoustic time refers to the acoustic delay between
ultrasonic instrument and transmitting and receiving transducers; zero
acoustic time must be eliminated in testing acoustic time value. Zero
set obtains zero acoustic time through test. This operation is required
when operate ultrasonic instrument and replace transducer or signal
wire in the first time.
3.6.1 Manual zero set
After have read acoustic time on waveform, find out the option
of Zero acoustic time in parameter interface, and input the acoustic
time into it manually.
3.6.2 Acoustic zero set
1
）
Press the Zero button in parameter interface, input
standard acoustic time in pop-up dialogue box as shown in
Figure 3.9(If use standard rod for zeroset, input the standard
acoustic time value of standard rod; if use coupling
transducer for zeroset, input 0).
2
）
Couple transducer according to the prompt message, press
Zero button to close this dialogue box, start sample
automatically, display waveform in waveform range and