GE PT878GC ユーザーズマニュアル

April 2004

Calibrating the Thickness Gauge Transducer (cont.)

a. Press 

[ENTER]

 to open the text box.

b. Use the numeric keys to enter the length.

c. Press 

[ENTER]

 to confirm the entry.

4. Press 

[ENTER]

 (Calibrate button) to prepare for calibration. 

Then apply couplant B to the block surface, and hold the 
transducer against the block. 

5. When you have the transducer firmly pressed against the 

block, press [ENTER] (Ready button) again to perform the 
calibration.

6. Hold the transducer steady until the Set button appears. Press 

[ENTER]

 to store the calibration. 

IMPORTANT: Be sure to hold the transducer steady until the 

7. If you have chosen dual calibration, repeat Steps 3 through 6 

above for Block 2.

8. The PT878GC asks for confirmation of the calculated and 

current values. 

Press the [

S

] arrow key to move to the Retry box and press 

[ENTER]

 to recalculate the value, or

Press 

[ENTER]

 on “Set” to commit the calculated value.

Once you have completed calibration, the transducer should 
remain calibrated until the meter memory is cleared or a dramatic 
shift in ambient conditions occurs.

To leave the Zero window:

Press the [

W

 ] or [

X

] arrow key to move to another tab to 

take readings or perform a velocity calibration.

Press 

[F2]

 (Cancel) to return to Operate Mode without 

confirming the sound speed value.

Press 

[F3]

 (OK) to confirm the new value. The PT878GC 

returns to Operate Mode.