Appendix B. Wind Direction Measurement Theory
B-2
The maximum value that R
s
will reach is R
f
just before it crosses over from the
west side of north to the east side of north (at this point R
t
= 0). V
s
reaches its
maximum value of V
x
. This maximum voltage equals 2500 mV for an
excitation voltage of 2500 mV recommended for the CR10(X) and 5000 mV
for an excitation voltage of 5000 mV recommended for the CR23X at 352
degrees. The multiplier to convert V
s
to degrees is 352 degrees / 2500 mV =
0.1408 for the CR10X, or, 352 degrees / 5000 mV = 0.0704 for the CR23X.
See Section 13.5 in the datalogger manual from more information on the bridge
measurements.
Summary of Contents for 03002 R.M
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