Instructions

5
If the displayed status is “Locked”, changes will not be saved to the device. Write the correct password in
the “Password input” field and press enter to unlock.
If displayed status is “Unlocked”, the settings and password can be changed and the menu will become
locked again after menu is closed.
Note that the password cannot be reset by the user. If the password is forgotten, the password reset can
only be made by the manufacturer. Please make sure that the password is remembered if changed.
Operation
After Kombi is successfully installed, it operates on its own. However, there are some considerations that
are good to know when using Kombi.
RHT measurement
Temperature is given in °C. Humidity is given in %RH.
TVOC measurement
An auto calibration is necessary for the TVOC sensor. A prolonged exposure to high TVOC concentrations
will affect the baseline of the sensor and the sensor will give incorrect readings until the baseline is
corrected. The auto calibration can work properly only if Kombi is exposed to fresh air at least some hours
after the prolonged exposure. TVOC concentration is given in ppb.
dP measurement
The pressure difference between the outlets is measured using the air flow. The direction of the air flow
determines the sign of the reading. If the outlet in the left-hand side is in higher pressure than the outlet
in the right-hand side, the reading is positive and vice versa. The pressure difference is given in Pa.
CO2 measurement
An auto calibration is necessary for the sensor. Without it, the sensor will drift over time and eventually
give incorrect readings. The auto calibration can work properly only if Kombi is exposed to fresh air at
least some hours during each week. In practice, the room must be unoccupied, and its ventilation must be
switched on. Concentration is given ppm.
Particulate matter measurement (option)
A small fan sucks air from the opening in the top cover. Inside the device the air passes through a laser
beam. The particles will cause a flash when passing the laser, allowing them to be counted and their sizes
(diameter) estimated.
The mass of the particles is estimated by assuming that they have a density of 1.65 g/ml and making
assumptions of their shape. The result is not accurate if the density, shape, or refractive index deviates
significantly from the estimates used in the calibration.
Monitor menu
In MekuWin Mon menu, you can monitor the measurement readings. The sensors are kept continuously
on. The values update at the rate the sensor can produce new readings.
Information about LoRaWAN is also displayed to help with potential connection issues.