GE PT878 User Manual
Chapter 8. Servicing the PT878
176
Transport® Model PT878 Portable Liquid Flowmeter User’s Manual
8.7.2 Calibrating Inputs
To open the Inputs window, press the [
X
] arrow key and press
[ENTER]
.
The screen appears similar to Figure 118 below.
Note:
Calibrating the analog inputs requires use of a current source.
Figure 118: Inputs Window in the Calibrate Option
1.
Press the [
T
] arrow key to enter the window.
2.
The first prompt asks you to select the input.
a.
Press
[ENTER]
to open the drop-down list.
b.
Use [
T
]or [
S
] arrow key to scroll to the desired output (A or B).
c.
Press
[ENTER]
to confirm your selection.
3.
The next prompt asks for the value to which you want to set the low
input (0 or 4 mA).
input (0 or 4 mA).
a.
Press
[ENTER]
to open the text box.
b.
Use the numeric keys to enter the desired value.
c.
Press
[ENTER]
to confirm your entry.
Analog Output
Calibrate/Test I/O
Analog Input
Input#
A
Low
Cancel
OK
4 mA
mA
20
Calibrate
High
Read
Read
Reset