Olympus Sonic 1200S/HR, User Manual

Page: 41 / 154

FastBreak Operation 33
3.4.3 Dual Element Thickness Measurement - Manual Mode
1. Turn the THICK T-GAUGE to IP-1 (IP to 1st echo).
2. Adjust the T-VEL to the test material velocity.
3. Set the ANGLE beam ANGLE to OFF.
4. Adjust the GATE1 POSN and WIDTH to cover the test range.
5. Adjust the GATE1 LEVEL to approximately 50% of the reference level.
6. Using a step block with graduated steps of at least the test range, make the following
instrument adjustments:
a) Move the transducer to the smallest desired step. Be sure the echo breaks the gate.
Readjust the gate and GAIN as necessary.
b) Adjust the THICK OFFSET until the thickness readout reads the correct value.
c) Move the transducer to the largest desired step.
d) Adjust the THICK T-VEL until the thickness readout reads the correct value.
Repeat the above adjustments and checks until both test values read correctly.
The test piece may now be inspected.
The multi-echo mode may be used by selecting the THICK T-GAUGE E-E mode and
repeating the above procedure with GATE1 placed over the first back echo and GATE2 over
the second.
3.4.4 Dual Element Thickness Measurement - Auto Mode
1. Turn the THICK T-GAUGE to A IP-1 (Auto IP to 1st echo).
2. Set the ANGLE beam ANGLE to OFF.
3. Adjust the GATE1 POSN and WIDTH to cover the test range.
4. Adjust the GATE1 LEVEL to approximately 50% of the reference level.
5. Using a step block with graduated steps of at least the test range, make the following
instrument adjustments:
a) Move the transducer to the largest desired step.
b) Select THK CAL (Cal Pt 1), and rotate the SmartKnob™ to select the largest step
value.
c) Move the transducer to the smallest desired step. Be sure the echo breaks the gate.
Readjust the gate and GAIN as necessary.
d) Press THK CAL soft key (Cal Pt 2), and rotate the SmartKnob™ to select the smallest
step value. Press THK CAL.