Epson USN 52L, Руководство по эксплуатации, Страница: 68 / 207

Krautkramer USN 52R/USN 52L Issue 05, 02/00 5-23
Operation:
– In the function CAL press
N
and
O
simultaneously.
The function is now enabled.
– REC 0 is displayed, indicating that no calibration
echo has been recordet yet.
– Set the gate onto the first calibration echo and enter
the sound path in S-REF using
M
.
– Save the first calibration echo using
M
in the CAL
function. On the display: REC 1 .
– Set the gate onto the second calibration echo and
enter the sound path in S-REF using
M
.
– Save the second calibration echo using
M
in thte
CAL function. On the display: REC 2 .
– Press
O
on CAL again to terminate the 2-step
calibration procedure.
Automatic calibration is carried out after the instrument
has calculated the entered parameters and made a
plausibility check.
H
Note :
To verify a correct instrument calibration, always check
the setting using the echo of a known distance, other
than those used for calibration.
Preparing the instrument for
digital measurement
USN 52R/USN 52L must be calibrated to the material to
be tested in order to give the correct measurement
readings.
H
Note:
For all calibration procedures, use a calibration block
with a known thickness, made of the same material and
having the same temperature as your test object.
Preconditions:
To start with, calibrate the A-scan display as described
in the preceding section. Carry out the following basic
settings:
GATE LOGIC:
POSITIVE, NEGATIVE or MEASURE
MEASURE: 0 TO 1st – for measurement to the first
echo in the gate. By this, the thickness or the flaw posi-
tion can be measured.
USN 52R/USN 52L calibration
Operation
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5-23
Operation:
– In the function CAL press
N
and
O
simultaneously.
The function is now enabled.
– REC 0 is displayed, indicating that no calibration
echo has been recordet yet.
– Set the gate onto the first calibration echo and enter
the sound path in S-REF using
M
.
– Save the first calibration echo using
M
in the CAL
function. On the display: REC 1 .
– Set the gate onto the second calibration echo and
enter the sound path in S-REF using
M
.
– Save the second calibration echo using
M
in thte
CAL function. On the display: REC 2 .
– Press
O
on CAL again to terminate the 2-step
calibration procedure.
Automatic calibration is carried out after the instrument
has calculated the entered parameters and made a
plausibility check.
H
Note :
To verify a correct instrument calibration, always check
the setting using the echo of a known distance, other
than those used for calibration.
Preparing the instrument for
digital measurement
USN 52R/USN 52L must be calibrated to the material to
be tested in order to give the correct measurement
readings.
H
Note:
For all calibration procedures, use a calibration block
with a known thickness, made of the same material and
having the same temperature as your test object.
Preconditions:
To start with, calibrate the A-scan display as described
in the preceding section. Carry out the following basic
settings:
GATE LOGIC:
POSITIVE, NEGATIVE or MEASURE
MEASURE: 0 TO 1st – for measurement to the first
echo in the gate. By this, the thickness or the flaw posi-
tion can be measured.
USN 52R/USN 52L calibration
Operation