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APPENDIX B: SENSOR ORIENTATION AND DIMENSIONS
MODEL 81000 ULTRASONIC ANEMOMETER
0°
270°
180°
POLAR
(WIND SPEED, WIND DIRECTION)
207 [8.1]
568 [22.4]
WHEN PROPERLY
ALIGNED, JUNCTION
BOX FACES SOUTH
81000-90
NORTH
EXAMPLE:
WIND AT 45°
90°
TOP VIEW
160 [6.3]
SENSOR RADIUS
(WIND FROM BELOW)
MOUNTING
DEPTH
114 [4.5]
ORIENTATION RING
SIDE VIEW
Page 10
+V
(WIND FROM NORTH)
CARTESIAN
(U-V-W)
- ELEVATION ANGLE
WITH WIND FROM ABOVE
+ ELEVATION ANGLE
WITH WIND FROM BELOW
+W
MOUNTING:
STANDARD 1" NPT PIPE
Ø34.0 [1.32]
INSTALL VERTICALLY AS SHOWN TO AVOID
MOISTURE DAMAGE TO CIRCUITRY.
NOTE: Dimensions: mm [in]
+U
(WIND FROM EAST)
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