CSAT3B Three-Dimensional Sonic Anemometer
48
FIGURE 8-1
. Angle θ
a
is defined as the angle between the vector of
oncoming wind,
U
, and the wind component along the a-sonic path,
U
a
.
8.2 Operating Modes
The CSAT3B has different operating modes that are selected based on the
desired measurement trigger source, presence of a data filter, and type of data
output. Specifically, the following four modes are available:
•
Mode 0: Data logger triggered | No filter | Data logger prompted output
•
Mode 1: Self triggered | Filtered | Data logger prompted output
•
Mode 2: Self triggered | No filter | Unprompted output to computer
•
Mode 3: Self triggered | Filtered | Unprompted output to computer
The mode is selected using the
Device Configuration Utility
under the
Measurement Settings
(p. 23)
for details on
viewing and selecting settings). TABLE
operating modes. The following sections give more information on the
measurement trigger, data filters, and data output as a guide to selecting the
appropriate mode. Mode 0 is the default operating mode for the CSAT3B and
is recommended when fluxes are the primary interest.
θ
a
U
U
a
