Section 2
Functional Description
11
FT702LT/D Flat Front Wind Sensor Manual
Figure 5: Wind speed output calibrations
If a wind sensor is replaced care must be taken to ensure that the 2 sensors have the same
calibration. Otherwise the system processing the wind data might perform differently after the
sensors are swapped
The wind speed scaling reference given on the main product labels can be used to identify the wind speed
calibration of the sensor. (See section 1.2).
From build version 22 and above a C:Code label might be attached. The C:Code number then indicates the type
of calibration applied. 2 examples are shown in Figure 6.
V20 - Standard 0-50m/s = 4-20mA. = Default
V22 - All other calibrations
The wind speed scaling reference is shown on
the part number label as 50
The C-Code:01 label is sometimes also
attached
No wind speed scaling reference is shown
on the part number label
The additional C-Code label and number
XX is used to identify the type of
calibration applied
Figure 6: Build version 22 sensor calibration label examples
0
4
8
12
16
20
24
0
10
20
30
40
50
60
70
C
u
rr
e
n
t
Lo
o
p
O
u
tp
u
t
(m
A
)
Wind Speed (m/s)
Wind Speed Current Loop Output Calibration Examples
0-40 m/s
0-50 m/s = Factory Default
0-60 m/s
Customisable calibration
Only from build version 22
