Description
SPECIFICATIONS
| MEASUREMENT CHARACTERISTICS | |
| 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 SPECIFICATIONS | |
| Output | SDI-12 communication |
| Data logger compatibility (not exclusive) | 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 Maximum: 60 °C |
| Cable length | 5 m (standard) 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 continuousNOTE: 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 3.0 V Maximum 5.5 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 0.050 mA Typical 0.125 mA Maximum 0.500 mA |
| Current drain (while asleep) | Minimum 0.050 mA Typical 0.125 mA Maximum 0.150 mA |
| Power up time (SDI Ready)—aRx! commands | Typical 10 s |
| Power up time (SDI Ready)—other commands | Typical 800 ms |
| Measurement duration | Typical 110 ms Maximum 3,000 ms |
| Compliance | Manufactured under ISO 9001:2015 EM ISO/IEC 17050:2010 (CE Mark) |




