3.
The STEL and TWA values will keep updating every 5 minutes.
ALARM
The meter features an audible alarm to give warnings when CO
2
concentration exceeds the set
limit. It emits beeps (Abt.80dB) when CO
2
level goes over the set value and stops when any key
(except
SET
) is pressed or the readings fall below the set value. It beeps again if the value
exceeds the limit. Restart the meter if the beeper will not stop.
AUTO POWER OFF
The meter turns off automatically after 20 minutes of inactivity. To override the function, press and
hold down the
SET
and
HOLD
buttons until “
n
” appears in the display (approx. 2 seconds) while
turning on the meter on. NOTE: Auto sleep function will be disabled during calibration mode.
SETUP
(alarm limit and temperature scale)
In the normal mode press and hold the
SET
button for more than 1 sec to enter the setup mode.
To exit the setup mode, press the
CAL/Esc
button when either P1.
0
or P3.
0
is displayed.
P1.0 CO
2
ALARM Limit
When entering setup mode, P1.
0
and “AL” are displayed.
Press the
M
N
/AV
button to scroll to P1.
1
for setting CO
2
alarm threshold. The current CO
2
set value will be blinking.
Press the
MODE/
▲ button to increase or the
DP/WBT/▼
button to decrease the value. Each
press adjusts 100 ppm. The alarm range is from 100 to 9900ppm. When the preferred alarm
value is set, press the
M
N
/AV
button to exit and save the setting or the
CAL/Esc
button to exit
without saving and return to P1.
0
.
P3.0 TEMPERATURE SCALE
Press the
MODE/
▲ button or the
DP/WBT/▼
button in P1.
0
to access P3.
0
for setting
the temperature scale.
Press the
M
N
/AV
button to go into P3.
1
for setting the temperature units. The currently selected
units (°C or °F) will be blinking in the display. To switch units, press the
MODE/
▲ button. Press
the
M
N
/AV
button to save the setting or press the
CAL/Esc
button exit without saving and return
to P3.
0.
