Lambrecht rain[e]observer, Руководство по эксплуатации

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Operating Instructions rain[e]observer
Operating Instructions
rain[e]observer Precipitation Measuring System
4 Introduction
With the extension set described here and the electric module, in addition to the amount and intensity of precipita -
tion, the rain[e] can use radar measurements to differentiate between 16 types of precipitation and thus becomes
a rain[e]observer. These instructions describe the installation and commissioning of the rain[e]observer and the
extension set.
5 Operating principle
The rain[e]observer’s Doppler radar sends electromagnetic waves in the mW range upwards via a transmitting
antenna array, i.e. towards the precipitation. The frequency used is internationally approved for measurements of
this kind. The receiving antenna array of the sensor receives the signal reflected by the droplets or particles, from
which the difference frequency between the two signals is determined.
The exact falling speed of the drops (particles) can be calculated from the difference frequency, which combined
with the measurements taken for air temperature and humidity allows for 16 types of precipitation to be determined
and differentiated approximately (see chart).
6 Scope of delivery
Scope of delivery for rain[e]observer installation set · ID no. 32.15184.300000
Note: rain[e] precipitation sensor not included (please order separately)
Item number Designation
32.15184.200000 Detection of precipitation type (observer module)
32.15184.301000 Observer connection box
33.14627.001010 Aluminum profile 8 40x16 E 0.75 m
33.14627.002000 Mast mount
35.09331.540100 Hexagonal screw M8 x 16 DIN 933 A2
35.67981.500841 Serrated lock washer 8.4 DIN 6798 A A2
69.06500.590000 T nut 8 St M8, galvanized
69.61010.210000 Tension band
69.61010.210100 Turnbuckle
7 Choosing the installation site
To minimize possible spraying, it is recommended that you avoid locations with a hard floor surface (such as
concrete) and to install the precipitation sensor instead on grass or another soft surface. In general, the sensor
should not be placed on roofs or slopes.
In accordance with DWD standards, we recommend installing the precipitation sensor at a distance of at least 2 m
or the obstacle height (above the sensor edge) to the next obstacle (such as trees or walls), twice the obstacle
height in accordance with WMO standards or ideally four times the obstacle height.
Overgrowth by plants around the precipitation sensor must be regularly trimmed back to the height of the sensor
in order to prevent the results being falsified and to reduce the effects of wind at the same time.
A specific point about the rain[e]observer’s radar module is that there should be no large moving objects such as
trees or cars driving within a radius of up to 10 meters in the module’s field of vision. This applies in particular to
moving objects at sensor height as well as gas disposal lamps (e.g. street lighting). The radar signals reflected from
these objects could produce Doppler frequencies, which could be incorrectly interpreted as precipitation events.
You should take account of power surges and lightning protection as well as possibly appropriate grounding
measures required on site in accordance with local regulations.
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