Lambrecht ECONOMY 14565 Operating Instructions

Operating Instructions (14565-24 V)
Wind direction sensor ECONOMY
Measuring Principle
The wind vane of the wind direction sensor (14565) is linked
to a disk with black and white sectors in 8 tracks. In this way a
GRAY code is generated. For stable operation the sectors are
divided in such a way that from measuring point to measuring
point only one sector changes (GRAY-EXCESS-CODE).
8 tracks and 144 sectors are equal to a resolution of 2.5 de-
grees. The position of the wind vane (of the disk) is scanned
by infrared LEDs and photo-transistors.
Calculation of the wind direction
The resolution of the measuring system is 2.5°. For the 1st
current output (0...20 mA) the wind direction calculated to
Angle [deg] = I [mA] / 20[mA] x 360 [deg]
1
Accordingly for the 2nd current output (4...20 mA):
Angle [deg] = (I [mA] - 4[mA]) / 16[mA] x 360 [deg]
2
Installation
First the wind direction sensor (14565-24V) has to be as-
sembled. The vane can only be installed in one way, thus an
180° error cannot happen.
Now the cable with the soldered plug connector is pulled
through the pipe and fastened to the sensor. Then the sensor
(14565-24V) is plugged on top of the pipe and fi xed with the
4 mm allen key provided. For exact positioning to north a dot
can be found on the sensor body and on the shaft of the wind
vane. It is recommended to tap the vane to the body in north
position, and then to fi x the sensor with the nose of the wind
vane to north. Finally the tap has to be removed.
For positioning the sensor to north (or south) fi nd a point in
the surroundings and use the sword of the vane for sighting
this point.
Electric Wiring
For connection a 12-pole plug connector is used. We recom-
mend shielded 10 x AWG 24 C UL sw cable with 0.22 mm²
cross section. The length of the cable should not exceed
100 m.
In case the sensor is connected with the power supply (14962)
and an electric indicator (8535), an appropriate 2-pole cable
between indicator and power supply is suffi cient.
Plug connector pinning 14565
F: + output 0...20 mA
E: - output 0...20 mA resp.
- output 4...20 mA
D: + output 4...20 mA
C: ---
L: output U 0...10 V
1 DC
B: output U 0...10 V
2: DC
A: output U 0...10 V
3: DC
K: ---
J: + 10...30 V power supply
DC
H: - 10...30 V power supply
DC
M: - 24 V power supply heating
DC
G: + 24 V power supply heating
DC