Sensors
Ammonit GmbH / 2005 - 2009
15
2.
Sensors
The connections to the sockets of the individual logger types are 100%
compatible. The WICOM-32 can register three wind speeds and two wind
directions, whereas the METEO-32 also has additional sockets for humidity,
temperature, air pressure, global irradiation and precipitation and the METEO-
32X has additional inputs which are not pre-defined (ADC, Counter, Status).
Details of the wiring to the sockets is provided in the Annex.
2.1. Anemometer
To measure wind speed attach an anemometer with impulse output. The
characteristic of the anemometer is given in the form of a linear equation with a
gradient and an intercept at 0 m/s:
v = a
·
I + b
v = Wind speed
a = Gradient of characteristic
I = Pulse rate
b = Intercept of characteristic
The parameters are entered with the "CALLaLOG" software: the gradient is in
0.1mm/pulse rate and the intercept in cm/s.
The Data Logger counts the pulses of the anemometer signal and calculates the
wind speed (in m/s) to one decimal place. The individual measurement values
therefore represent exact means for each completed measurement interval.
The display shows the wind speed in [m/s]
S
S
y
y
s
s
t
t
e
e
m
m
M
M
o
o
n
n
i
i
t
t
o
o
r
r
*
*
A
A
n
n
e
e
m
m
o
o
1
1
:
:
5
5
.
.
8
8
m
m
/
/
s
s
All wind speed values are stored in dm/s, so that they must be divided by 10
before being used (this can be done automatically by the "CALLaLOG" program
during data transfer).
Summary of Contents for METEO-32
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