Specifications

Channel Master Operation Manual
P/N 95B-6001-00 (February 2006) page 45
+X
+
Z
-
X
+Y
B
e
a
m
1
Vertical Beam
B
e
a
m
2
Figure 22. Channel Master Instrument Coordinates
It is important to mount the Channel Master with the two horizontal acous-
tic beams in the same horizontal plane (zero roll). A small tilt of the Chan-
nel Master may result in an interference of the acoustic beams with either
the channel bottom or water surface (see Figure 23). The Channel Master is
equipped with a tilt sensor that can be used to guide in mounting. During
installation, the user can monitor the pitch and roll readings through the
real-time program WinHADCP and adjust the mounting fixture as needed.
NOTE. Depending on channel cross-section geometry, the user may want
the Channel Master mounted with a small upward lean (positive pitch), or
downward lean (negative pitch) to avoid any interference of the acoustic
beams with either the river bottom or water surface. The lean must be
determined by field tests. However, in any case, the Channel Master must
be mounted with zero roll.
ZERO ROLL ZERO PITCH
X-Axis
Y-Ax is
POSITIVE FLOW
Figure 23. Channel Master Mounting Pitch and Roll