*Flat Array Sodar SFAS*
The Scintec SFAS is a very compact acoustic profiler for the measurement of wind and turbulence up to 500 m above the ground.  The operation is based on the reflection of acoustic pulses at temperature inhomogeneities in the air with subsequent doppler analysis.  The instrument can replace towers, tethered balloons or radiosondes at a fraction of the operational costs.  With its small size and low weight, the system can be easily transported and installed. Its low power consumption also facilitates the unmanned operation in remote areas.

SFAS can be further upgraded by RASS Extensions (RAE2 and windRASS) for precise measurements of temperature profiles. In addition to temperature, the windRASS model also performs wind measurements with the combined radio-acoustic measurement technique, which ensures a robust measurement that works anywhere and anytime.


*FEATURES-1*
maximum range up to 500 m
vertical resolution down to 5 m
compact and lightweight design
RASS Extensions available (RAE2 and windRASS)

*FEATURES-2*
multi-frequency technology (sequential and polyphonic)
simultaneous multi-beam technology
fully-automated self-test
low noise-emission with active tapering
various remote access options available


*SPECIFICATIONS*
Specifications

*SPECIFICATIONS-TABLE*
Data output (includes but is not limited to)
# (Description) # 
# Wind speed and direction #
# Temperature (with RASS Extension) #
# Standard deviations of wind components #
# Turbulence intensity for wind energy applications #
# Wind shear for airport applications #
# Standard deviation of wind directions (sigma phi, sigma theta) and stability class for air quality applications #
# Structure parameter of temperature C T2 for wave propagation studies #
# Turbulent kinetic energy #
# Eddy dissipation rate #
# Mixing height estimation #
# Data quality (signal-to-noise ratio) #
# Data confidence (consensus level) #
# Wind roses #
# Frequency distribution of wind speeds for power-curve calculations #


*SPECIFICATIONS-TABLE*
Basic Specifications
# (Description) # (Specification) #
# Number of antenna elements # 64 // ((piezo-electric)) #
# Electric (acoustic) output power # 20 W (5 W) // ((maximum, selectable)) #
# Frequency range # 2525 to 4850 Hz // ((auto-configuration or user defined)) #
# Multi-frequency # sequential and polyphonic // ((auto-configuration or user defined)) #
# Multi-beam operation # up to 9 beams in two configurations // ((auto-configuration or user defined)) #
# Beam angles # 0°, ±8°, ±13° or 0°, ±19°, ±24° // ((selectable)) #
# Number of range gates # 100 // ((maximum setting)) #
# Vertical resolution # 5 m // ((finest setting)) #
# Minimum height # 10 m // ((depending on settings, environment and atmosphere))  #
# Maximum height # 500 m // ((depending on settings, environment and atmosphere))  #
# Averaging time # 1 to 60 min // ((user defined)) #
# Accuracy of horizontal wind speed # 0.1 to 0.3 m/s // ((depending on mode, average over varying conditions))  #
# Accuracy of vertical wind speed # 0.025 to 0.1 m/s // ((depending on mode, average over varying conditions))  #
# Accuracy of wind direction # < 1.5° // ((at wind speeds > 2 m/s)) #
# Measurement range of horizontal wind speed # 0 to 50 m/s // ((nominal)) #
# Measurement range of vertical wind speed # -10 to 10 m/s // ((nominal)) #
# Operating conditions # temperature: -35 to +55 °C (-30 to +130 °F); relative humidity: 0% to 100% #
# Power requirement DC operation # 12 or 24 VDC, 20 to 40 W // ((average, depending on settings)) #
# Power requirement AC line operation # 100 to 240 VAC, 35 to 70 W // ((average, depending on settings)) #
# Size # 44 x 42 x 16 cm // ((Acoustic Antenna without Enclosure)) #
# Weight # 11.5 kg // ((Acoustic Antenna without Enclosure)) #




*SPECIFICATIONS-TABLE*
Software Specifications
# (Item) # (Specification) #
# Software compatibility # Compatible with Windows 10, Windows Server 2018 or older versions. #
# System monitoring # Remotely monitor the system status in an automatic way via the SNMP interface. Notification about system status can also be sent to user via SMS. #
# Control and configuration # Graphical user interface with auto-configuration functionality, no manual editing of configuration files required. #
# Real-time display # Wind barb and vector plots, profile plots, time vs. height color plots, wind roses, timeline plots with trend lines, raw time series plots, raw spectra plots and tabular outputs. #
# Displays offline # Same as displays in real-time. #
# Real-time data export # Network output a via FTP, TCP, UDP or shared folder. #
# Reprocessing of data # Reprocess of time series, spectra, moments or main data, fully configurable through graphical user interface. #
# Echo detection # Automatic fixed echo detection and correction. #
# Quality control # Thorough data confidence and data quality checks. #
# Remote control capability #  Measurement control and change of configuration via LAN, Radio or GSM Modern. #
# Hardware self-test # Extensive self-test capability, which runs in a fully automatic way. #

SFAS is a high-performance acoustic Wind Profiler with a compact and lightweight design, which provides the highest spatial resolution among the FAS series.
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(c) Scintec AG 2021