Measuring Procedure - Lutron Electronics GCH-2018 Operation Manual

4. MEASURING PROCEDURE

4-1 CO2 measurement
1)Plug the " CO2 Probe Plug " ( 3-15, Fig. 1 ) into the "
Probe Input Socket " ( 3-9, Fig. 1 ).
2)Power on the meter by pressing the " Power Button "
( 3-2, Fig. 1 ),
* The LCD will show the text " WARM UP "
* The " Sampling indicator
in cycling.
Warm up time will take about 45 seconds, then
display will show the CO2 ( PPM ) value in the upper
LCD, the lower LCD will show the temperature value.
* When the " Sampling indicator
the CO2 measuring value will update one time.
* Response Time of CO2 is < 2 min. typically,
however it is depend on the environment air
circulation.
3)The meter Temp. display unit is defaulted to "
intend to let the meter's temperature unit default to "
, then please refer section 5-2 ( page 11 ).
4-2 Humidity measurement
a. Humidity/Temp. measurement
1)Plug the " Humidity Probe Plug " ( 3-18, Fig. 1 ) into the
" Probe Input Socket " ( 3-9, Fig. 1 ).
2)Power on the meter by pressing the " Power Button "
( 3-2, Fig. 1 ), the LCD shows the unit " %RH " & "
at the same time and measured value will show on
the display ( upper display is Humidity value, the
lower display is the temperature value ) .
3)The meter Temp. display unit is defaulted to "
intend to let the meter's temperature unit default to "
, then please refer section 5-2 ( page 11 ).
" will be rotated
7
" rotate one cycle,
". If
℃
℃
". If
℃
"
℉
"
"
℉