Campbell Scientific CSAT3B CSAT3B Three-Dimensional Sonic Anemometer - Page 35

Orientation, Mounting

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CSAT3B Three-Dimensional Sonic Anemometer FIGURE 7-2. Real-time data subscreen while connected to CSAT3B with Device Configuration Utility 7.2 Orientation The three components of wind are defined by a right-handed orthogonal coordinate system. The CSAT3B points into the negative x direction (see FIGURE 7-5). If the anemometer is pointing into the wind, it will report a positive ux wind. In general, the anemometer should be pointed into the prevailing wind to minimize interference from support structures such as the tower or tripod. Typically, the anemometer should be mounted level to the ground as described in Section 7.4, Leveling. 7.3 Mounting The CSAT3B is supplied with mounting hardware to attach it to the end of a horizontal pipe with an outer diameter of 3.33 cm (1.31 in), such as the Campbell Scientific CM202, CM204, or CM206 crossarm (referred to generically as a CM20X crossarm). The following steps describe the normal mounting procedure. 1. Secure the chosen crossarm to a tripod or other vertical structure using a CM210 crossarm-to-pole mounting kit (pn 17767) as shown in FIGURE 7-3. 25

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CSAT3B Three-Dimensional Sonic Anemometer
FIGURE 7-2.
Real-time data subscreen while connected to CSAT3B
with Device Configuration Utility
7.2
Orientation
The three components of wind are defined by a right-handed orthogonal
coordinate system.
The CSAT3B points into the negative x direction (see
FIGURE 7-5).
If the anemometer is pointing into the wind, it will report a
positive u
x
wind.
In general, the anemometer should be pointed into the prevailing wind to
minimize interference from support structures such as the tower or tripod.
Typically, the anemometer should be mounted level to the ground as described
in Section 7.4,
Leveling
.
7.3
Mounting
The CSAT3B is supplied with mounting hardware to attach it to the end of a
horizontal pipe with an outer diameter of 3.33 cm (1.31 in), such as the
Campbell Scientific CM202, CM204, or CM206 crossarm (referred to
generically as a CM20X crossarm). The following steps describe the normal
mounting procedure.
1.
Secure the chosen crossarm to a tripod or other vertical structure
using a CM210 crossarm-to-pole mounting kit (pn 17767) as shown
in FIGURE 7-3.
25