Model 106-L Ozone Monitor Manual Rev. E
11
Overwrite Data?
No Yes
Warning: If you start logging, all data previously stored in the logger will
be irretrievably lost.
If you have data in the logger that you want to keep, be
sure to download it (see below) before starting logging. Click on
Yes
if you are
sure you want to start logging new data. This will return you to the
Dat Menu
.
Click on
to return to the main
Menu
, and click on
again to exit the Menu
and start making measurements. Note that “
” always takes you up one level
in the menu.
The Ozone Monitor will then alternate every 5 seconds between displaying the
most recent 10-s measurement and the current average value. For example,
the display might read
O3= 3.2 ppb
T=33.3 P=989.7
where the current 10-s measurement is 3.2 ppb (by volume), the temperature is
33.3
o
C and the pressure is 989.7 mbar. If 10-second averaging (no averaging)
has been selected, five seconds later, this display might be followed by
O3= 2.2 ppb
19:55 05/02/2010
showing that the time of the measurement is 7:55 pm and the date is 2 May
2010. If averaging has been selected, the above display will be replaced by
Avg O3= 24.1 ppb
19:55 05/02/2010
for example, where the most recent average value of ozone computed is 24.1
ppb. If data are being logged, the log number and number of new
measurements made for the next average (minus 1) are displayed in place of
the data and time; e.g.,
Avg O3= 24.1 ppb
Log=
193:4
where
Avg O3
is the average ozone value most recently written to the logger,
and the current log number is 193. The “4” in 193:4 refers to the number of 10-
s data points that have been measured so far for inclusion in the next average
to be displayed and logged. If 1-min averaging is used, this number will
increment from 0 to 5; for 5-min averaging, the number will increment from 0 to
29; and for 1-hr averaging, it will increment from 0 to 359. This number is
