Delta Faucet NANOTRACE DF-745 - Manual (Page 53)

User Interface DF-745 49
Figure 44: Pump Capacity Test Log
7.4.7 Analyzer Setup
The analyzer setup menu allows the user access to the Gas Scale Factor settings, Alarm
Setups, Analog Output setup and Graph setup.
Use the arrow keys ( and  to scroll up and down through the list. Pressing ESC will
return to the main display.
7.4.7.1 Sample GSF
Figure 45: Sample GSF Menu
The GSF setup (Gas Scale Factor) is critical for obtaining quantitatively correct results. It
accounts for the fact that moisture molecules have different absorption features in different
buffer gases.
The GSF should be applied when the user has any knowledge of a change in the buffer gas
or change in the percentages of a mixed background gas. The default setting from the
factory is 100% N
2
, yielding a GSF of 1.00.