Lufft VENTUS-UMB - Generation of Measurements; Current Measurement (act); Minimum and Maximum Values (min and max); Average Value (avg)

Operating Manual V25/09.2019 Ventus / Ventus-X / V200A
Chapter 7 Generation of Measurements 10
7 Generation of Measurements
7.1 Current Measurement (act)
In accordance with the specified sampling rate, the value of the last measurement is transmitted
when the current measurement value is requested. Each measurement is stored in a circular
buffer for the subsequent calculation of minimum, maximum and average values.
7.2 Minimum and Maximum Values (min and max)
When requesting the minimum and maximum values, the corresponding value is calculated - via
the circular buffer at the interval specified in the configuration (1- 60 measurements) - and
transmitted.
Note: In the case of wind direction, the minimum / maximum value indicates the direction at
which the minimum / maximum wind speed was measured.
7.3 Average Value (avg)
When requesting the average value, this is calculated - via the circular buffer at the interval
specified in the configuration (1 - 60 measurements) - and transmitted. In this way moving
averages can also be calculated.
7.4 Vectorial Average Value (vct)
In the specific case of wind measurement, measurements are calculated vectorially. To this
end, the average values of the vectors are generated internally. Hence the value (wind speed)
and angle (wind direction) of the vector are calculated.
Note: On delivery, the interval for the calculation of minimum, maximum and average values is
set at 60 measurements. If necessary, this can be adjusted to the particular requirements with
the aid of the UMB-Config-Tool (see page 28).