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GE General Electric Oxygen Equipment PT878 Benutzerhandbuch

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Chapter 8. Servicing the PT878
166
Transport® Model PT878 Portable Liquid Flowmeter User’s Manual
Dual-Point Calibration (cont.)
1.
Press the [
T
] arrow key to enter the window.
2.
The first prompt asks you to choose between single and dual-point 
calibration. Use the [
W
] and [
X
] arrow keys to move to the Dual radio 
button and press 
[ENTER]
. 
3.
The next prompt asks you to enter the length of Block 1. (If you are 
using a GE-supplied test block, the length is printed on the block.)
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 [
X
] to move to the Calibrate button, and press 
[ENTER]
 to 
prepare for calibration. Then apply couplant B to the Block 1 surface, 
and hold the transducer against the block. 
5.
When you have the transducer firmly pressed against the block and the 
Ready button appears, press
 [ENTER]
 again to perform the calibration.
Note:
For single-point calibration, skip to step 9.
6.
The next prompt asks you to enter the length of Block 2.
a.
Use the arrow keys to move to the Block 2 text box.
b.
Press 
[ENTER]
 to open the text box.
c.
Use the numeric keys to enter the length.
d.
Press 
[ENTER]
 to confirm the entry.
7.
Press [
X
] to move to the Calibrate button, and press 
[ENTER]
 to 
prepare for calibration. Then apply couplant B to the block surface, and 
hold the transducer against the block. 
8.
When you have the transducer firmly pressed against the block, press 
[ENTER] (Ready button) again to perform the calibration.
9.
Hold the transducer steady until the Set button appears. Press 
[ENTER]
 
to store the calibration.