(b) TAKING MEASUREMENT
The meter starts the measurements when powered
on and updates reading every 6 sec.
Response time is 10 sec. for CO
2
, 2 Sec. for RH.
If the operation environment changes (ex. From high to
low temp.), it takes approx. 30 sec. for CO
2
sensor to
respond and approx. 30 minutes for RH into stable
measurement.
NOTE: Do not hold the meter close to your mouth
or any other source of CO
2
.
RECORDING MEASUREMENT
(Model 9853X series)
While recording, the green LED light is flashing and
“Logging” icon is flashing on LCD,too. If you have set up
Hi, Lo alarm value, the red LED will be flashing while
detecting the value which exceeds the threshold.
( c) CO2 MODE
In the CO
2
Mode, press
MODE
button to switch CO
2
display. The top layer of display will cycle 3 from CO
2
,
Maximum, Minimum and 98138,98538 features function
TWA, STEL, lps% & cfm/p.
CO
2
ppm
MAX
CO
2
ppm
MIN
CO
2
ppm
4