Sutron Corporation Satlink Operations & Maintenance Manual, Rev 8.04.2 11/3/2016 pg. 32
The PREF board has the following terminals:
G1, E1, G2, E2
Where G1/G2 are grounds and E1/E2 are the PREF1 and PREF2 voltages.
4.21. Connecting Prop/Vane or Anemometer/Vane Wind
Sensors
The prop/vane or anemometer/vane wind sensors like the RMYoung wind sensor typically have a
potentiometer for direction and frequency output for speed. The RMYoung connects to SL3 as
shown below. WS/DIN#1 is used for the frequency as it can handle low level AC as well as high
level DC pulses for speed.
* A 1.0 MOhm resistor needs to be placed from VREF (or SIGNAL GROUND) to AZ SIG. This
ensures that the value always goes to 355 (or 0 with SIGNAL GROUND) when the potentiometer
is in the open region.
Setup two measurements for the RMYoung – one for the direction and one for the speed.
Setup for Direction Measurement
Measurement Type: Analog
Analog Type: 0-5A
Equation: X/VREF*355 {converts to degrees}
Setup for Speed Measurement
Measurement Type: Digital
Digital Type: Frequency 1 or Frequency 2 (amplified version only)
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