registered information can be viewed either on the reader itself or transmitted to a
computer through specific computer links and packages.
The data acquisition equipment (dataloggers) (Fig. A1.13) are complementary
equipment to the measurement sensors, configured to allow digitization on a data
acquisition board and storage in internal memory, for later reading on a computer
reading software. These devices also allow computer programming of measurement
rates in predetermined periods of time.
The data acquisition devices allow the processing of all types of electrical signals,
such as voltage, current intensity, resistance, pulse count and frequency reading. The
reading ranges are the most diverse, depending on the needs of the sensors, and the
power supply can be guaranteed by batteries with solar panels in the field or by
alternating current. These devices allow reading electrical voltage signals in
differential or absolute mode, which are thereafter subjected to processing operations
such as amplification, linearization, digitization or storage. The processed
information can be sent remotely, or be transfered to a computer. The data
acquisition devices also allow the electrical supply of the sensors or the emission of
excitation pulses, necessary for their operation (e.g., wind direction sensor).
The equipment for application to the turbulent covariance method (Chap. 3) has
its own memory systems for digitization and data storage for post-processing of
information. These processes are regulated using specific software for each system.
Fig. A1.13 Data acquisition equipment
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Annex A1: Instrumentation in Environmental Physics
computer through specific computer links and packages.
The data acquisition equipment (dataloggers) (Fig. A1.13) are complementary
equipment to the measurement sensors, configured to allow digitization on a data
acquisition board and storage in internal memory, for later reading on a computer
reading software. These devices also allow computer programming of measurement
rates in predetermined periods of time.
The data acquisition devices allow the processing of all types of electrical signals,
such as voltage, current intensity, resistance, pulse count and frequency reading. The
reading ranges are the most diverse, depending on the needs of the sensors, and the
power supply can be guaranteed by batteries with solar panels in the field or by
alternating current. These devices allow reading electrical voltage signals in
differential or absolute mode, which are thereafter subjected to processing operations
such as amplification, linearization, digitization or storage. The processed
information can be sent remotely, or be transfered to a computer. The data
acquisition devices also allow the electrical supply of the sensors or the emission of
excitation pulses, necessary for their operation (e.g., wind direction sensor).
The equipment for application to the turbulent covariance method (Chap. 3) has
its own memory systems for digitization and data storage for post-processing of
information. These processes are regulated using specific software for each system.
Fig. A1.13 Data acquisition equipment
332
Annex A1: Instrumentation in Environmental Physics