MWS_55_e.indb Page 18
Manual MWS 55 / MWS 88 / MWS 10 and Sensors 55
geändert am 04.12.2020 von DO
REINHARDT
System- und Messelectronic GmbH
Fax: 08196/7005 and 1414 email:
wetter@reinhardt-testsystem.de
http://www.reinhardt-wetterstationen.de
3.4.4 The Wind Speed Sensor
is a three-shell anemometer with optical scanning. The wind speed is measured without contact
via a hybrid light barrier using a serrated washer with 12 notches. A peak detector finds every
wind peak and hands them on the measuring software. An average value is determined within
the respective memory intervals.
Range: in km/h from 0 to 200 km/h with ± 2.5km/h measuring accuracy, (display also in m/s,
miles/h, Knot or Beaufort), starting speed < 0.8 m/s.
As we have a very comfortable, 3-fold way of measuring wind speed with current wind speed
(WG), average wind speed (WD) and wind peaks (WS), you can conform your wind measurement
to your very needs.
Please note that dependent on the current winds, the 3 different methods of measuring wind
speed can result in very differing graphs: When measuring WG, only a current value is written
in the selected measuring interval, when measuring WD and WS, there is continuous evaluation
and the whole measuring period is moni tored.
Unit: [km/h]
3.4.5 The Wind Direction Sensor
There is a weather vane with a precision magnetical encoder and a rotation angle of 360 ° for
measuring wind direction. Wind direction is given in °, with 90° being East, 180° being South,
270° being West and 0 ° being North.
Range: in 360 °, measuring accuracy 5 °, starting speed,
< 0.8 m/s, hysteresis < 8°.
Output is performed as WR (current winddirection) and WV (main wind direction within a storage
interval). The value of WV at wind speed (WG) = 0 is -99997!
This indicates that a calculation of main wind direction is not possible, when wind speed is = 0.
Unit: [°]
3.4.6 Rain / Precipitation Sensor (MWS 10, otherwise optionally)
A self-emptying bucket is tilted by the collected rain. All the water that has been collected on
the normed area of 200 cm
2
is led through a funnel to the bucket. The bucket tilts whenever a
certain quantity of water has been collected. The tilting creates pulses which are counted. Out of
the pulses, the software calculates the rain that has fallen per m
2
. The current intensity of rain
is also found and displayed. Unit: [mm] [l/m²]
Range: from 0 to 5000 ltr/m
2
,
Measuring accuracy ± 0.2 ltr/m
2
3.3.7 Global Solar Radiation Sensor (MWS 10, otherwise optionally)
This is a pyranometer which absorbs radiation between 305 and 2800 nm. The tem perature of a
black and a reflecting element is subtracted and linearised by the software. The measuring sensor
is a thernmo element.
The values are edited in W/m
2
.
The measured value reaches 90 % of its final value after about 90 seconds.
Unit [W/m²]
Range: from 0 to 1300 W/m
2
with ±40 W/m
2
accuracy at 25°C.
3.4.8 Light Intensity Sensor (Lux-Sensor) (Option)
measures light intensity in Lux. Measuring range is within the human eye response.
Range: from 0 to 220000 lx
Measuring resolution: 4 lux