RKI Instruments SC-01 - Manual (Page 54)

54 • Viewing, Printing, Exporting, and Deleting Data in the Data Window
Alarm Trend Data
In addition to the interval trend data, the SC-01 also saves files
that describe the most recent gas alarm events. If a gas alarm
event occurs, then an alarm trend data file that is centered
around the event is saved separately from the interval trend data
files. It shows the gas reading up to 30 minutes before and 30
minutes after the event, with the log interval time every five
seconds. The gas reading logged at the time of the alarm event
is highlighted in red and the gas reading logged every 5 seconds
around the alarm event is the peak reading for the previous five
seconds. If the SC-01 has not been on for 30 minutes before the
alarm event occurs, the data during this time is left blank. If the
SC-01 is turned off less than 30 minutes after an alarm event
occurs, the data file will only have logged data until the unit was
turned off.
The SC-01 saves up to 8 alarm trend files. When an alarm event
triggers an alarm trend file to be saved, subsequent alarm
events must occur 15 minutes after the previous triggering event
in order to trigger the saving of another alarm trend file. If 8
alarm trend files are already saved in the SC-01’s memory, the
oldest alarm trend file is overwritten when a new alarm trend file
is saved. Alarm trend data can always be displayed in either
table or graph format.