Measurement Setup Examples
RM Young Wind Speed and Direction
This section describes how to connect the sensor and how to setup MONITOR in order to
measure wind speed and direction. The sensor used is an RM Young 05103-11 which
has a four blade propeller for speed and a vane for direction. The sensor provides a
square wave signal for wind speed and uses a potentiometer for wind direction.
This device provides wind speed via a frequency output and direction via an analog
output. To wire it up, connect like so
RM Young output MONITOR
input
AZ SIG
ANALOG 0-5V (either A or B)
WS SIG
CNTR IN
REF AGND
+V SUPPLY
SW’D BATT
AX EXC
VREF
A 1.0 MOhm resistor needs to be placed from VREF (or AGND) to AZ SIG. This will
ensure the value always goes to 355 (or 0 with AGND) when the potentiometer is in the
“open” region.
This MONITOR setup will measure wind data from the RM Young:
Wind speed setup
Value
M1 Active
On
Label
WNDSPD
Meas Type
Wind
Wind Type
Wind Speed Freq
Warmup
1 sec
Averaging Time
00:00:10
Sampling Interval
1.0 sec
Slope
Depends on desired units – see below
Wind Speed Units
Slope
m/s 0.098
knots 0.1904
mph 0.2194
kph (km/h)
0.3528
Wind direction setup
Value
M2 Active
On
Label
WNDDIR
30