GE Krautkramer USM 35X Operator's Manual page 67

Calibrating the USM 35X
Case B: With unknown material velocity
Use the semiautomatic calibration function of the
USM 35X via the function group CAL for this calibration
case.
The distances between 2 calibration echoes must be
entered as default data. The USM 35X will then carry
out a plausibility check, calculate the material velocity
and the probe delay, and automatically set the parame-
ters.
Krautkramer USM 35X
Calibration process
– Set the required display range in RANGE (function
group BASE). The two calibraion echoes selected
must be displayed on the screen. Set the range so
that the second calibration echo is located on the
right edge of the screen.
– Select the function group CAL.
– Enter the distances of the two calibation echoes in
S-REF1 and S-REF2.
– Position the gate (function aSTART) on the first
calibration echo.
– Press to record the first calibration echo.
– The recording of the first calibration echo is con-
firmed by the message "Echo is recorded", and the
function CAL indicates the value 1.
– Move the gate to the second calibration echo.
– Press to record the second calibration echo.
Issue 01, 04/2005
Operation
5-19