GE General Electric Oxygen Equipment PT878 Benutzerhandbuch
Chapter 8. Servicing the PT878
Transport® Model PT878 Portable Liquid Flowmeter User’s Manual
165
8.4.4 Calibrating the Thickness Gauge Transducer
To zero the transducer offsets, go to the Zero tab. Press the [
W
] or [
X
]
arrow key until you reach the Zero tab and press
[ENTER]
. The screen
appears similar to Figure 112 below.
Figure 112: Zero Window
Dual-Point Calibration
Note:
The factory recommends dual calibration. Dual-point calibration is
more reliable, but it requires two known thickness levels of the
calibration material. Use single-point calibration only if you know
the velocity of the calibration block material to a high degree of
accuracy. For single-point calibration, complete the following
procedure, but skip steps 6, 7 and 8. See Appendix D for more
information.
more reliable, but it requires two known thickness levels of the
calibration material. Use single-point calibration only if you know
the velocity of the calibration block material to a high degree of
accuracy. For single-point calibration, complete the following
procedure, but skip steps 6, 7 and 8. See Appendix D for more
information.
Display
Thickness Gauge Measure
Cancel
OK
Graph
Velocity
Zero
Material
Block 1 Length
Calculated
Current
Transducer Delay,
0
0
Single
Dual Calibration
0
mm Calibrate
µs