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6. Range
The free field range, i.e. the range of the line of sight contact between the transmitter
and the receiver is 100 m under optimum conditions. Walls and even reinforced
concrete can be penetrated, which does, however, reduce the range. A reduced
range can occur due to the following reasons:
· High-frequency interference of all kinds
· Built structures and vegetation of all types
· The distance of the transmitter or receiver from conductive surfaces or objects
(even to the human body or the ground) has an effect on the transmission
characteristics and therefore the range.
· Wide band interference in built up areas can reach levels that reduce the signal-
noise ratio throughout the frequency band which results in a reduced range.
· Devices with adjacent working frequencies can also influence the receiver.
· Badly shielded PCs can irradiate the receiver and limit its range.
7. Maintenance and servicing information
- Protect the basic device against dust and moisture. Never clean it with chemical
cleaning materials, use only a soft, dry cloth. Do not exert any pressure on the
display.
- The outdoor sensor must be cleaned of adhering dirt from time to time. When you
do so, check that the wind sensor can move freely and that the sensors are firmly
located on the holder.
7.1. Cleaning the rainfall sensor
- Depending on the location, leaves and particles of dirt, sand, twigs etc. carried
along by the wind can get into the collector funnel of the rainfall sensor. Larger
items can clog up the opening. Sand can also accumulate in the counter rocker,
distorting the measuring results as the quantity increases.
- The rainfall sensor should therefore be cleaned from time to time, but at least
once a year.
- To do this, remove the sensor housing by turning it slightly to the left.
- The collector funnel is also removed by being turned to the left.
- The rainfall sensor is then lifted up and folded over towards the cable side so that
the counter rocker can be removed.
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