Campbell Scientific CSAT3B CSAT3B Three-Dimensional Sonic Anemometer - Page 18

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CSAT3B Three-Dimensional Sonic Anemometer 4.3 Factory Settings The CSAT3B is shipped from the factory with the default settings that are shown in TABLE 4-2. These settings can be changed with a PC running Campbell Scientific's Device Configuration Utility, version 2.10 or newer, and the USB cable that shipped with the CSAT3B. Device Configuration Utility is available from the Campbell Scientific website in the Support | Downloads section and is included with PC200W, PC400, and LoggerNet software packages. TABLE 4-2. CSAT3B Factory Settings Communication Settings Measurement Setting Setting SDM address CPI address CPI/RS-485 Communication Port Protocol CPI Baud Rate RS-485 Baud Rate Unprompted Output Port Unprompted Output Rate Operating Mode Default 3 30 CPI Enabled Auto 115200 Disabled 10 Hz Mode 1: Datalogger-Trigger/No Filter/ Datalogger-Prompted Output 5. Overview The CSAT3B is an ultrasonic anemometer for measuring sonic temperature and wind speed in three dimensions. It is often used for studies of turbulence and flux measurement, where turbulent fluctuations of wind speed and sonic temperature must be measured at high frequencies; at 10Hz, for example. From the turbulent wind fluctuations, momentum flux can be calculated. The covariance of vertical wind and sonic temperature yields sonic sensible heat flux. By finding the covariance between vertical wind and scalar measurements made by other fast-response sensors, such as fine-wire thermocouples or gas analyzers, other fluxes can be calculated. For example, sensible and latent-heat fluxes, carbon-dioxide flux, and other trace-gas fluxes, can all be measured by combining the CSAT3B with other sensors. The CSAT3B can communicate measurements using SDM (Synchronous Device for Measurements), USB, RS-485, and CPI (CAN Peripheral Interface) communications. For optimal synchronization with other fast-response sensors for applications such as eddy covariance, Campbell Scientific recommends using SDM or CPI communications with an appropriate Campbell Scientific datalogger. 8

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CSAT3B Three-Dimensional Sonic Anemometer
4.3
Factory Settings
The CSAT3B is shipped from the factory with the default settings that are
shown in TABLE 4-2.
These settings can be changed with a PC running
Campbell Scientific’s
Device Configuration Utility,
version 2.10 or newer, and
the USB cable that shipped with the CSAT3B.
Device Configuration Utility
is
available from the Campbell Scientific website in the Support | Downloads
section and is included with
PC200W
,
PC400
, and
LoggerNet
software
packages.
TABLE 4-2.
CSAT3B Factory Settings
Communication
Settings
Setting
Default
SDM address
3
CPI address
30
CPI/RS-485 Communication Port Protocol
CPI Enabled
CPI Baud Rate
Auto
RS-485 Baud Rate
115200
Unprompted Output Port
Disabled
Unprompted Output Rate
10 Hz
Measurement
Setting
Operating Mode
Mode 1: Datalogger-Trigger/No Filter/
Datalogger-Prompted Output
5.
Overview
The CSAT3B is an ultrasonic anemometer for measuring sonic temperature
and wind speed in three dimensions.
It is often used for studies of turbulence
and flux measurement, where turbulent fluctuations of wind speed and sonic
temperature must be measured at high frequencies; at 10Hz, for example.
From the turbulent wind fluctuations, momentum flux can be calculated.
The
covariance of vertical wind and sonic temperature yields sonic sensible heat
flux.
By finding the covariance between vertical wind and scalar
measurements made by other fast-response sensors, such as fine-wire
thermocouples or gas analyzers, other fluxes can be calculated.
For example,
sensible and latent-heat fluxes, carbon-dioxide flux, and other trace-gas fluxes,
can all be measured by combining the CSAT3B with other sensors.
The CSAT3B can communicate measurements using SDM (Synchronous
Device for Measurements), USB, RS-485, and CPI (CAN Peripheral Interface)
communications.
For optimal synchronization with other fast-response sensors
for applications such as eddy covariance, Campbell Scientific recommends
using SDM or CPI communications with an appropriate Campbell Scientific
datalogger.
8