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LAMBRECHT meteo |AEM | METEOROLOGY
page –6
OUTPUT SIGNAL
When you connect the output signal please note the assignment of the wires of the open cable end shown in
the internal circuit diagrams on the following pages. The individual output wires lead you to the corresponding
connecting terminals of the data acquisition section.
ELECTRONICS SUPPLY
On models 14566 and 14576, the electronics are supplied via the J(-) and H(+) wires of the 12-pin connector.
The permissible values are:
Model Voltage Current
The electronic heating of versions 14566 and 14576 is supplied via an external power supply unit. The necessary
voltage of 24 VDC is connected via the M(-) and G(+) wires.
GROUNDING
To reduce the risk of inductive interference the sensor must be properly grounded (screening on both sides). The use
of ready-made connecting cables from LAMBRECHT meteo guarantees a proper grounding between sensor and
cable. You just have to connect the cable screening to the ground of the indicator or the data acquisition unit. When
other cables are used, you must create an appropriate screening.
ADJUSTING THE WIND VANE
For wind direction measurements the north mark on the sensor must be aligned with the geographical north
direction; the allowed maximum alignment deviation is ±3 degrees. To set up the sensor’s north orientation select
reference point can be selected using a topographical map (1:25000). The exact position of the reference point is
determined using an amplitude compass that can be adjusted horizontally on a stand.
A point on the rotary knob and another point on the casing shaft represent the north mark of the wind direction
point by aiming at it over the axis. Now you must turn the sensor casing on the mounting tube until the tip of the wind
vane points to the reference point in the north.
Please make sure there is no magnetic deviation of the compass.
When the north direction is set up for the wind direction sensor, tighten the headless screws in the lower part of the
casing and remove any adhesive tape, if necessary. Using an indicating instrument or a data acquisition system,
90 degrees from each other.
If the local conditions do not allow the reference point to be set up in a northerly direction, the procedure can be
applied analogously to a southerly reference point. In this context, it must be ensured that the north mark on the wind
sensor does not point to the reference point, but in the opposite direction.
![AEM Lambrecht Meteo u[sonic]WS7 User manual](/data/manuals/12/e/12e6t/sources/aem-lambrecht-meteo-u-sonic-ws7-manual.jpg "AEM Lambrecht Meteo u[sonic]WS7 User manual")
