GE TransPort PT878GC User Manual page 89

Portable gas flowmeter
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Entering Skan/Measure Parameters (cont.)
1. The first prompt asks for the Percent of Peak, which is used to
calculate the transit times and Delta-T. The default value is 80,
and values from 1 to 100 are acceptable.
a. Press
[ENTER]
b. Use the numeric keys to enter the recommended value.
c. Press
[ENTER]
2. The next prompt asks for Skan-T Offset, a time measurement
offset that compensates for any shift resulting from cross-
correlation. The default value is 12.6 µsec, and values from
-500 to 500 µsec are acceptable.
a. Press
[ENTER]
b. Use the numeric keys to enter the recommended value.
c. Press
[ENTER]
3. The next prompt, M>S Switch, causes the meter to switch
from Skan to Measure Mode when Delta-T is less than the
M>S Switch value. The default value is 5.0 µsec and values
from 0 to 250 µsec are acceptable.
Note: Do not change this value without consulting GE Sensing.
If you wish to use Skan only, set the M/S Switch to a value
of 0.
a. Press
[ENTER]
b. Use the numeric keys to enter the recommended value.
c. Press
[ENTER]
4. The program now asks if you wish to Limit the Measurement
Delta. (The default is unchecked or off.)
a. Press
[ENTER]
b. Use the numeric keys to enter the recommended value in
µsec.
c. Press
[ENTER]
Programming Site Data
to enter the text box.
to confirm the entry.
to enter the text box.
to confirm the entry.
to enter the text box.
to confirm the entry.
to enter the text box.
to confirm the entry.
April 2009
4-25

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