RKI Instruments GX-2001 Data Logging with Calibration Station - Manual (Page 12)

12 • Overview of the GX-2001 Data Logging Software
minutes before and 15 minutes after the event, with the log time
every five seconds.
When an event occurs and an alarm trend data file is saved in
the Model GX-2001, this file remains in the unit’s memory until
another event occurs. When another event takes place, the
alarm trend data file is overwritten with the information of the
new event.
Alarm trend data can always be displayed in either table or
graph format. The following figure shows a sample alarm trend
graph of the four target gases. It includes the alarm event and
the concentrations the four target gases during the alarm event.
Figure 3. Data View (Alarm) Showing Gas Concentrations at the
Alarm Event
Time log Cursor function activated;
move scroll bar to see
gas concentrations over
time
Alarm event
and gas
concentration
Gas concentration
For interval data,
zoom shows greater
detail of information
relative to time