%
O
STEL
CO
2
Fig.8
NOTE:
1.
While all readings are held unchanged,
STEL and TWA will keep updating
every 5 minutes.
If the meter is turned on for shorter
than 15 minutes, the STEL value will
be the weighted average of readings
taken since power on. Same for TWA
values that appear before 8 hours.
2.It takes at least 5 minutes to calculate
STEL and TWA. The display shows
“----” (Fig.9) during the first 5 minutes
from power on.
3.
SET
%
O
STEL
CO
2
Fig. 9
The meter turns off automatically after
20 minutes of inactivity. To override the
function, hold down and for 2
seconds to turn on the meter until “
n
”
appears.
NOTE:
Auto sleep function
will be disabled during calibration mode.
6
SET
AUTO POWER OFF
ALARM
The meter features audible alarm to
give warnings when CO concentration
2
exceeds the limit. (See P1.
0
in setup
for setting alarm threshold). It emits
beeps(Abt.80dB)when CO level goes
2
over the set value and stops when any
key (but ) was pressed or readings
fall below the set value. It beeps again
when value goes over the limit. Restart
the meter if beeper can't be stopped.
