ATMOS 22
Tech Specs
TECHNICAL SPECIFICATIONS
Measurement Specifications
Horizontal Wind Speed
Range: 0.00 – 30.00 m/s
Resolution: 0.01 m/s
Accuracy: the greater of 0.3 m/s or 3% of measurement
Wind Gust
Range: 0.00 – 30.00 m/s
Resolution: 0.01 m/s
Accuracy: the greater of 0.3 m/s or 3% of measurement
Wind Direction
Range: 0 – 359 °
Resolution: 1 °
Accuracy: ±5 °
Tilt
Range: -90 – 90 °
Resolution: 0.1°
Accuracy: ±1 °
Communication Specifications
Output
SDI-12 communication
Data Logger Compatibility
METER ZL6, Em50, and EM60 data loggers or any data acquisition systems capable of 3.6- to 15.0-VDC excitation and SDI-12 communication
Physical Specifications
Dimensions
Diameter: 10.0 cm (3.94 in)
Height: 16.0 cm (6.30 in)
Operating Temperature Range
Minimum: -50.00 °C
Maximum: 60.00 °C
Cable Length
5 m (standard)
75 m (maximum custom cable length)
75 m (maximum custom cable length)
NOTE: Contact Customer Support if a nonstandard cable length is needed.
Connector Types
3.5-mm stereo plug connector or stripped and tinned wires
Electrical and Timing Characteristics
Supply Voltage (VCC to GND)
Minimum: 3.6 VDC continuous
Maximum: 15.0 VDC continuous
NOTE: The ATMOS 22 must be continuously powered to work properly.
NOTE: For the ATMOS 22 to meet digital logic levels specified by SDI-12, it must be excited at 3.9 VDC or greater.
Digital Input Voltage (Logic High)
Minimum: 2.8 V
Typical: 3.6 V
Maximum: 5.0 V
Digital Input Voltage (Logic Low)
Minimum: -0.3 V
Typical: 0.0 V
Maximum: 0.8 V
Digital Output Voltage (Logic High)
Typical: 3.6 V
NOTE: For the ATMOS 22 to meet digital logic levels specified by SDI-12, it must be excited at 3.9 VDC or greater.
Power Line Slew Rate
Minimum: 1.0 V/ms
Current Drain (During Measurement)
Minimum: 0.2 mA
Typical: 8.0 mA
Maximum: 33.0 mA
Current Drain (While Asleep)
Minimum: 0.2 mA
Typical: 0.3 mA
Maximum: 0.4 mA
Power Up Time (SDI Ready) — other commands
Typical: 130 ms
Power Up Time (SDI Ready) — aRx! commands
Typical: 10 s
Power Up Time (SDI-12, DDI Serial Disabled)
Typical: 200 ms
Measurement Duration
Typical: 110 ms
Maximum: 3000 ms
Other
Compliance
EM ISO/IEC 17050:2010 (CE Mark)
GSA
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