(14579) EFFICIENT
Operating Instructions
Operating Instructions
Wind Sensors EFFICIENT (14579)
The connecting cable is suitably led along the mast between
the data evaluation device (indicating instrument or data ac-
quisition system) and the sensor. The cable must be fastened
using appropriate cable ties (their length depends on the mast
diameter).
Tip: Lead the cable in a wide curve from the mast to
the bottom of the casing so that you can later easily
dismount the cable.
Please make sure the cable is protected from humidity on the
side of the data processing system. Generally, Pg sockets
that use a rubber joint to prevent humidity from penetrating
into the terminal box of the data processing system provide
sufficient protection.
Example representation:
Cable run by an EMC fair Pg-socket
Alternatively the lead can be laid also completely in the pipes
of a mast, if the mast is accordingly prepared.
To reduce the risk of inductive interference the
sensor must be properly grounded (screening
on both sides).
5.
Heating
The sensor disposes of an electronically controlled 18 W-
heating within the sensor head.
The heating is supplied together with the sensor electronics.
(On request a separate supply of the sensor electronics and
the heating by a fixed cable is possible.)
Under most climatological condi-
tions the heating prevents blocking
of the moving sensor parts (see
illustration). The cup rotor or the
wind vane are not heated. In case
of icing or formation of ice at the
moving sensor element the func-
tion is restricted for the period of
icing.
6.
Maintenance
The sensor design permits long periods of maintenance-free
operation. We therefore recommend a regular visual verifica
-
tion of the north setup of the wind direction sensor as well as
a sensor calibration of both sensor types in the distance of 2
years. With problems, which cannot solve you, do not hesitate
to contact our LAMBRECHT meteo service under:
Tel.: +49-(0)551-4958-0
Fax: +49-(0)551-4958-312
e-mail: [email protected]
You can also use masts that can turn around their vertical
axis or masts consisting of individual segments or telescoping
masts that you can secure after setting up the north direction.
If wind speed and wind direction are measured at the same
time, the measurement generally takes place not only at the
top of a mast but also at the ends of a cross arm. The arms
must stay torsion-free and vibration-proof even at high wind
speeds and they must be accessible for you to perform mount-
ing and maintenance work.
When you install the connecting cables make sure
not to excessively shorten the cable leading to the
connector in the lower part of the sensor casing so
that you can later maintain or dismounting the sensor.
Put further a cable loop as sensor protection against
water under the sensor.
Tip: Install the sensors on ground to the traverse and
align you the wind vane parallel to the traverse. You
go only then upward, in order to accordingly align the
sensors with traverse under assistance of a partner
on ground.
3.
Setting up the North Direction
for the wind vane
For wind direction measurements the north mark on the sen-
sor must be aligned with the geographical north direction.
You have to turn the marking exactly over the marking at the
sensor shaft. When you have aligned the marks, you may fix
the wind vane with e.g. a piece of adhesive tape. When you
have fixed the wind vane this way you can locate the refer
-
ence 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.
To set up the sensor’s north orientation select a landmark
which is as far as possible up north with regard to the final
position of the wind direction sensor.
The 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.
Please make sure there is no magnetic deviation
of the compass.
When the north direction is set up for the wind direction sen-
sor, you can mounting it like under point "Principle of installa-
tion". Remove any adhesive tape.
If you cannot select a northern reference point owing to local
conditions, you can proceed analogously using a reference
point in the south. In this case, however, you have to make
sure the north mark on the sensor does not point to the refer-
ence point but in the opposite direction.
4.
Electrical connection
Sensors EFFICIENT are connected to a data measuring sys-
tem via the open cable end. The sensors have a cable-plug
connection to the cable.
H
Heating
Heizung
3
