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Pressure setup
Press
(Left) 4 times to enter the barometer setup mode. Then press
(Up) and
(Down) to select history display over 12 or 24 hours.
Button sound setup
Press
(Left) 5 times to enter the button sound setup mode. Then press
(Up) and
(Down) to switch between ON/OFF.
Calibration setup
Press
(Left) 6 times to enter the calibration setup mode. This function allows you to change the values
received from sensors before they are displayed or recorded. Typically used to compare displayed and recorded
values with data from a reference measurement or instrument. The most common example is the calibration
of absolute and relative pressure.
All calibration settings typically offer a deviation or factor/coefficient. The value recorded and displayed is
calculated from the sensor value by multiplying the sensor value by a factor and then adding an offset.
If a particular factor cannot be changed, it will be 1. This will also be the default value. The standard
deviation will be 0. Often only barometric adjustments are required!
When changing a setting, the console displays the current sensor value with an offset or factor applied, so you
can determine the offset you want, find out your reference value, and change the offset until the reference
value matches yours.
ATTENTION! Before making changes to the wind speed factor and precipitation factor, make sure
the multisensor is installed horizontally, the wind vane can rotate freely and there is no "slip" on
the axle (make sure the fixing screw is tight).
Pressure Setting Calibration
Unlike other calibration settings, where the factory setting ensures the 1.0 factors and 0 offsets are
appropriate and correct for the instrument's stated accuracy, this is not typically done for relative barometric
pressure readings.
Absolute atmospheric pressure can be calibrated at the factory by comparison with an accurate instrument
that measures the pressure at the same location. In practice, small adjustments of a few hPa may sometimes
be necessary. Relative pressure is what the sensor would show if the station were at sea level. It depends on
the height of your console and cannot be known in advance. Therefore, it requires offset correction.
Calibrating Pressure Setup
•
Set this setting to hectopascals (hPa) as the pressure units.
•
Determine the height of your console above sea level. This can be done using GPS or this website:
https://www.freemaptools.com/elevation-finder.htm.
•
Add the required number of meters above ground level for your console. If you are on the ground floor
and have the console on a table, you will probably need to add about 1−1.2m.
•
Next, you need to determine the right deviation to be added to the absolute pressure reading to get
the precise relative pressure reading. Correction tables can be found online and there are also online
calculators, e.g. http://www.csgnetwork.com/barcorrecthcalc.html.
•
Enter your console height and standard pressure (1013.25hPa) and click the "Calculate" button. In the
Actual Barometer correction line you will find the deviation coefficient, its value will be negative (for
example, −1.56). Round this coefficient to 1 decimal place and enter the same value, but with a "+" sign
in the console settings (+1.6, respectively).
•
Next, you need to find a reliable source of information about the relative pressure in your area. The
nearest airport to you (within a radius of up to 40km) can be such a source. Find the METAR information
for your nearest airport online. This data also contains information about the relative pressure at the
airport.
•
Make sure the console displays relative pressure and compare it with the data from the airport. If the
data does not match, subtract the console reading from the airport pressure data. Then enter the
resulting deviation coefficient with the opposite sign in the absolute pressure deviation settings.
•
If you have an accurate barometer, place it next to the console for more precise adjustments, and then
adjust the absolute pressure offset to match the readings on both instruments. Next, apply the previously
calculated relative pressure deviation and further adjust it until the relative pressure at the console
matches the value from the airport.
•
Change the units of measurement back to ones you prefer.
Transmitter ID setup
This setting cannot be changed. This number identifies the type of outdoor sensor from which the multisensor
data was obtained. This is mainly needed for troubleshooting.
(Right) to enter the submenu. Use
(Right) to enter the submenu. Use
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