ATMOS 22
The ATMOS 22 Ultrasonic Anemometer is designed for continuous monitoring of wind speed and direction. A robust, no moving parts design that prevents errors because of wear or fouling make the ATMOS 22 ideal for long-term, remote installations.
Applications of the ATMOS 22 are listed below:
• Weather monitoring
• Microenvironment monitoring
• In-canopy wind measurement
• Spatially-distributed environmental monitoring
• Wind profiling • Crop weather monitoring
• Weather networks
Additional advantages include its low-power design that supports battery-operated data loggers, and the SDI-12 three-wire interface. A tilt sensor warns the user of out-of-level condition, and no configurations are necessary. Prior to use, verify all ATMOS 22 system components are included and appear in good condition
Specification
Measurement Specification
Horizontal Wind Speed
| Range | 0-30 m/s |
| Resolution | 0.01 m/s |
| Accuracy | The greater of 0.3 m/s or 3% of measurement |
Wind Gust
| Range | 0-30 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° to 90° |
| Resolution | 0.1° |
| Accuracy | ±1° |
Communication Specification
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 Characteristics
Dimensions
| Diameter | 10 cm (3.94 in) |
| Height | 16 cm (6.30 in) |
Operating Temperature Range
| Minimum | –50 °C |
| Typical | NA |
| Maximum | 60 °C |
Cable Length
5m (Standard)
75m (Maximum custom cable length)
NOTE: Contact Customer Support if a nonstandard cable length is needed.
Connector Types
Stereo plug connector or stripped and tinned wires
Stereo Plug Connector Diameter
3.5-mm
Electrical and Timing Characteristics
Supply Voltage (VCC to GND)
| Minimum | 3.6 VDC continuous |
| Typical | NA |
| 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)
| Minimum | NA |
| Typical | 3.6 V |
| Maximum | NA |
Power Line Slew Rate
| Minimum | 1.0 V/ms |
| Typical | NA |
| Maximum | NA |
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 | 0.4mA |
power Up Time (SDI ready)—aRx! Commands
| Minimum | NA |
| Typical | 10 ms |
| Maximum | NA |
power Up Time (SDI ready)—Other Commands
| Minimum | NA |
| Typical | 130 ms |
| Maximum | NA |
power Up Time (SDI-12, DDI disabled)
| Minimum | NA |
| Typical | 200 ms |
| Maximum | NA |
Measurement Duration
| Minimum | NA |
| Typical | 110 ms |
| Maximum | 3000 ms |
Compliance
Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)
For inquiries contact us
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