Levenhuk 78899, User Manual

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Levenhuk Wezzer PLUS LP90 CO2 Monitor
The kit includes: CO2 monitor, USB cable, user manual, and warranty.
Caution! Please remember that mains voltage in most European countries is 220–240V. If you want to use your device in
a country with a different mains voltage standard, remember that use of a converter is absolutely necessary.
Getting started
Connect the power cable to the device and the DC adapter (not included) via a USB plug and connect it to the AC power supply.
Relevant CO2 data will be displayed within 2.5 minutes.
Button panel and device settings
CO2 readings
ATTENTION!
When the CO2 level exceeds 2400 ppm, the icon starts flashing.
400—600ppm
green zone
normal outdoor air CO2 level
601—1400ppm
cyan zone
typical level for occupied spaces with good air exchange
1401—1900ppm
yellow zone
ventilation is recommended
1901—2400ppm
red zone
ventilation strongly recommended
2401—5000ppm
is associated with such symptoms as headache, sleepiness, poor attention, increased heart rate, and
nausea
> 5000ppm serious oxygen deprivation that may lead to brain damage, coma, and death
CO2 and humidity settings
Press and hold the SET button to enter the settings. The digits that are to be set are flashing. Press UP or DOWN to change
the value.
The setting order: low CO2 alert level > high CO2 alert level > low RH% alert level > high RH% alert level.
When the CO2 or humidity value reaches the set high or low alert level, the or icon appears and starts flashing.
Acoustic alert
Press the ALERT button to turn the CO2 alarm on. Press the button again to disable the sound alarm.
History
Press the MAX./MIN. button to display the MAX. and MIN. records.
Display order: MAX. CO2 level > MIN. CO2 level > mean CO2 value within 15 minutes> mean CO2 value within 8 hours.
Press and hold the MAX./MIN. button to clear the history records.
Temperature
Press the UP button to switch between °C and °F.