Model 106-L Ozone Monitor Manual Rev. E
15
When the
Cal Menu
first appears, the
Z
will be underlined with a cursor. You
may rotate the Select switch to choose the calibration parameter
S
or
Z
. A
single click on
S
or
Z
will select that parameter for change and activate a
blinking cursor. Once
S
or
Z
is selected, its value can be changed by rotating
the Select switch to the left or right. After choosing the desired value, a click
turns off the blinking cursor and allows you to scroll to the other parameter or to
to exit the submenu.
Once the values of
Z
and
S
are set, clicking on
will
return the display to the
Cfg
menu, and another click on
will return to the
Admin Menu
. The calibration parameters reside in non-volatile memory and
are not affected by power failures.
In order to adjust the zero offset, after the instrument has warmed up for at
least 20 minutes attach the external ozone scrubber and make measurements
for a few minutes. If the average of those measurements is 4.4 ppb, for
example, subtract 4 from the current value of Z; i.e., if Z was set to 3 during the
measurements, change Z to -1. For more details about calibrating the ozone
monitor against another instrument or calibrated ozone source, see the
“Calibration” section starting on page 26 of this manual or refer to Tech Note
No. 15 at:
http://www.twobtech.com/tech_notes/TN015.pdf
To Set the Time and Date
From the
Main Menu
, select the
Cfg
submenu. Next, select the
D/T
submenu.
The display will read, for example:
D/T: 14:32:21
17/10/2010
meaning that it is 21 seconds after 2:32 p.m. on October 17, 2010 (military time
and European date). To change a number in the date and time, rotate the
Select switch to underline the numeral you want to change. A single click then
causes a blinking cursor to cover that numeral. The number can then be
changed by rotating the Select switch. Once the number is correct, click on the
Select switch to turn off the blinking cursor. You may now rotate the Select
switch to choose another numeral to change. Once the time and date is
correct, clicking on
will set the internal clock to that time and return the
display to the
Cfg
menu. As in setting a digital watch, the seconds should be
set in advance of the real time since the clock starts to run again only when the
set time is entered; in this case by clicking on
.
