Amprobe CO2-200 Manuel de l'utilisateur - Page 10

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OPERATION

1. Plug in the adaptor and the meter turns on

automatically with a short beep. It performs

30 seconds countdown (Fig.1) for meter warm

up, then enters normal mode with current CO2,

temperature, and humidity readings displayed.

2. The meter starts taking measurements when

power on and updates readings every second. In

the condition of operating environment change

(ex. from high to low temp.), it takes 30 sec to

respond for CO2 sensor and 30 minutes for RH.

3. Press "p/DP/WB" to switch temperatures

display. The lower left display will cycle from air

temperature, dew point temp., and wet bulb

temp. (Fig. 2)

4. Press "MNX/AVG/q" to see the minimum,

maximum, and weighted average readings.

Each press of it displays MIN, MAX, STEL, TWA in

sequence and returns to normal mode. In MIN and

MAX modes, it shows the minimum and maximum

readings of CO2 on main display, and of AIR/DP/

WBT temperatures and humidity on the lower

displays. In STEL and TWA modes, the main display

shows the weighted average of CO2 readings for

the past 15 minutes (STEL) and 8 hours(TWA), but

the lower displays are the current AIR, DP/WB

temperatures and humidity readings.

NOTE:

• 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 appear before 8 hours.

• It takes at least 5 minutes to calculate STEL and

TWA. The display shows "----" during the first 5

minutes from power on (Fig. 3).