DH Instruments COMPASS FOR MOLBOX, User Manual

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COMPASS

for molbox™ User’s Manual
Page 37
© 1998-2003 DH Instruments, Inc .
Table 5. <Flow Conditions> Panel Fields
FEATURE DESCRIPTION
Calibration Gas
(drop down list)
Select the calibration gas from the list of molbox supported gases.
Stability Setting
(numeric entry field)
molbox stability criterion. The value entered is in the current molbox flow
display units when in
[Run molbox] mode and the DUT flow units when in
[Run DUT] mode. The molbox stability criterion is the Ready/Not Ready
criterion for molbox flow (see the molbox Operation and Maintenance
Manual, Ready/Not Ready Section).
K Factor
(numeric entry field)
Gas correction factor by which the molbox flow is multiplied when the gas flowing is
not the normal DUT operating gas (process gas). The K factor is specific to the
DUT (see the molbox Operation and Maintenance Manual, K Factor Section).
6.6.7 UNITS SELECTION
The units selection function is represented by the toolbar icon:
Flow, pressure and temperature units of measure can be changed with this function. In [Run DUT] mode,
the flow units are controlled by the DUT Definition. The pressure and temperature units may
also be controlled by the DUT Definition if it specifies a density correction (see Section 8.5.3).
Table 6 provides information on the units selection panel fields.
Press <Enter> to activate the change after making a units selection.
Figure 17. <Units> Panel
Table 6. <Units> Panel Fields
FEATURE DESCRIPTION
Flow Units
(drop down list)
Current display flow unit of measure. The value can be changed only in
[Run molbox] mode. New flow units can be created by selecting the
<Edit Units> option at the top of the drop down list. This selection displays
the flow unit Editor (see Section 14).
Pressure Units
(drop down list)
Select from the list of supported pressure units of measure. When in [Run DUT]
mode and the DUT has a density correction, the pressure units are controlled
by the DUT Definition (see Section 8.5.3).
Temperature Units
(drop down list)
Select from the list of supported temperature units. When in [Run DUT]
mode and the DUT has a density correction, the temperature units are
controlled by the DUT Definition (see Section 8.5.3).