DH Instruments GFS2102, Руководство по эксплуатации и обслуживанию, Страница: 164 / 206

GFS2102™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 148
Verify or select the mass flow controller on the “ Setup Flow Controller ” window (see
Figure 101). Select “ Next ”.
A “ Configure Device ” window will appear for the selected mass flow controller (see
Figure 102). Select the output voltage source for the mass flow controller, such as a
Referent/DUT molbox or MFC-CB. Select “
Next ”.
The “ Initializing Test Instruments ” window will appear (see Figure 103). Select
“ Finish ” and GFS Tools will initialize all components needed for the test, including the
balance, LCM, and all components selected in the previous steps. Once initialization is
complete the system will be ready but idle. All run-time options and functions will now
need user input to continue.
As part of the initialization process, the GFS checks the mass of gas in the Reference Gas
Cylinder against the Minimum Required Test Mass. If there is insufficient mass to complete the
test a message will warn of this condition and ask if the user wishes to continue anyway. Until
this condition is acknowledged by the user all further test execution is halted.
Open a data file: see Section 5.4.2 for information on Data File creation. A data file must
be open to successfully collect data from an accumulation.
Set a flow rate and select flow regulation options: see Section 5.1.5.2.1 for information on
setting a target flow and regulating flow. Allow flow to stabilize before starting an
accumulation.
Start an accumulation: see Section 5.1.5.2.3 for information on using the “Traffic Light”
icon on the GFS Control Toolbar within the GFS Control Panel for starting an
accumulation. Once the icon has been selected, the “Accumulation Sample Setup”
window (see Figure 105) will appear. The flow rate from the previous step will already be
present. Enter a starting and ending sample tolerance as described in
Table 42 and
select “OK”.
Figure 105: Accumulation Sample Setup window
Define “Take Point” Options: see Section 5.1.4.3 for point and averaging options for data
acquisition.
Depending on the selections under [TOOLS][OPTIONS] , once the accumulation has
completed the flow control with either continue indefinitely or will shut down with the
accumulation. The data file will remain open until a new data file is requested or the “Stop”
icon is used to halt the run mode.