GE AquaTrans AT868, User Manual

Page: 82 / 158

September 2004
6-4 Diagnostics
Using the Tracking
Window
If the fluid sound speed is fairly constant, you can use the Tracking
Window to “find” the sound speed and then enter it rather than
constantly track it since tracking adds to the measurement time.
Use the procedure below to determine the fluid sound speed and enter
it into the meter.
Note:
In order to perform the steps below, you must activate the
Tracking Window as described in Section 2, Setting Up the
Tracking Window, on page 2-9.
Accessing the Display
Submenu
1.
Allow the AT868 to run for a few minutes in order to “track” the
fluid sound speed.
2.
Press
[ESC]
,
[ENTER]
,
[ESC]
. The meter enters the user program.
3.
Press [
X
] until
PROG
appears and press
[ENTER]
.
4.
Press [
X
] until
GLOBL
appears and press
[ENTER]
.
5.
Press [
X
] until
I/O
appears and press
[ENTER]
.
6.
Press [
X
] until
LCD
appears and press
[ENTER]
.
Configuring the Display
1.
At
# of LCD PARAMS
, press [
X
] to select the desired number of
parameters to be sequentially displayed and press
[ENTER]
.
For a 1-channel/path AT868, proceed to Step 3. For a 2-channel/path
meter, proceed to Step 2.
2.
Press [
X
] to select the desired channel/path option and press
[ENTER]
.
3.
At
Measurement Name
, press [
X
] to select
SNDSP
and press
[ENTER]
.
4.
The previous two prompts repeat until all of the specified
# of LCD
PARAMS
have been set up.
5.
Press [
ESC
] four times to exit the User Program .
6.
Wait for the AT868 to display the sound speed. If the sound speed
remains fairly constant, record it and proceed to the next section.
If the sound speed is not constant, leave the Tracking Window
ON
and reconfigure the display (as described above) to show the
desired measurements.
Note:
If you are unsure if the sound speed is fairly constant, consult
the factory.