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5. GFS TOOLS SOFTWARE
Page 67 © 2007 DH Instruments, a Fluke Company
Table 16. GFS System Display Fields
FIELD DESCRIPTION
Mass of Gas
(far left center)
The calculated mass of gas in the GFS Reference Gas Cylinder available for
use, in grams. This value is calculated from the Instantaneous Mass minus
the “Mass of evacuated cylinder assembly” value of the currently selected
Reference Gas Cylinder.
Balance Output
Display
(far lower left)
The instantaneous uncorrected output of the balance in grams.
Cylinder Icon When shown indicates that in the current AMH state the Balance Output
Display is indicating the mass of the Reference Gas Cylinder.
When no icon is present above the Balance Output Display, the AMH is in the
zero/unloaded position where nothing is on the balance and the Balance
Output indication should be close to zero.
When a long rectangular icon is present above the Balance Output Display,
the AMH is in the Reference Mass position and the Balance Output indication
should be close to the mass value of the Reference Mass.
molbox1 / BSN: The mol B loc S erial N umber of the DUT molbloc attached to the molbox1.
Mass Error: The % reading error between the accumulated masses of the GFS and the DUT(s).
Flow Error: The % reading error between the averaged flows of the GFS and the DUT(s).
Target Mass:
The total mass to be accumulated by the GFS for the active accumulation before the
test will end or the next accumulation will initialize.
5.1.5.2.3 GFS Control Toolbar
The Control Toolbar is used for GFS specific operation. The toolbar is the main
source of system control for Manual Test operation. Use of the toolbar during
test definitions is not required or desirable in most situations.
Figure 40. GFS Control Toolbar section of GFS Run Screen
Table 17. GFS Control Toolbar icons
FEATURE DESCRIPTION
Start a flow accumulation. When an accumulation is started, the accumulation
sample setup dialog displays allowing the operator to specify the starting and
ending sample tolerance values and the flow rate. The information entered
determines the total mass to deplete and the test time.
Abort the active flow accumulation. When abort accumulation is pressed, no
final accumulation operations are taken.
AutoZero the GFS. The GFS AMH lowers the reference mass onto the
balance and determines a correction for any drift in the balance since the last
Balance Zero or AutoZero.