5. GFS TOOLS SOFTWARE
Page 111
© 2007 DH Instruments, a Fluke Company
Table 43.
Test Definition Editor
[AutoZero]
Tab Fields
FEATURE
DESCRIPTION
Select the AutoZero operation to perform before an accumulation begins. Determine the
frequency to apply the operation by choosing one of the radio button options below the list
box.
•
None
- There are no specific zero operations perfomed when an accumulation
begins.
•
AutoZero
- The GFS AutoZero function is run before the accumulation begins.
•
Zero Balance
- The balance is set to zero before the accumulation begins.
Pre accumulation
operation
(required list
selection)
•
Apply to each accumulation
– Each accumulation of each flow point will carry
out the selected pre accumulation operation.
•
Apply to each flow point
- Only the first accumulation of each flow point will
carry out the selected pre accumulation operation.
•
Apply to first flow point
- The first point of the test will carry out the selected
pre accumulation operation.
AutoZero at end of
of accumulation
(check box)
After the required accumulation mass is consumed, a final AutoZero is performed when
this option is selected. The accumulation is forced to continue until at least one more
sample from the GFS is taken.
Do not use this option for long accumulations that may require a large correction. The
resultant shift in data makes error plots created during the accumulation less useful. It is
also makes it more difficult to troubleshoot problems.
AutoZero at timed
interval
(check box)
Select this option to run the AutoZero at a timed interval. In typical laboratory
environments, an AutoZero should run approximately every 5 minutes. This minimizes the
absolute drift correction and provides a more continuous accumulation error plot.
5.5.2.8
[OPTIONS]
The
[Options]
tab provides features to further customize a Test Definition. The
choices on this tab are not required for good test operation.
Figure 70.
Test Definition Editor [Options] Tab