Introduction to Sensor
The ATMOS 41 Gen 2 is a research-grade, all-in-one weather station designed for accurate and reliable atmospheric monitoring in demanding outdoor environments. Its compact, integrated design measures 12 key weather variables using a single rugged instrument, making installation and maintenance simple while reducing the need for multiple separate sensors.
Specifications
Specifications
Measurement Specifications
| Measurement | Specifications |
|---|---|
| Solar Radiation | Range: 0–1750 W/m2 Resolution: 1 W/m2 Accuracy: ±5% of measurement typical |
| Precipitation | Range: 0–1,500 mm/h Resolution: 0.017 mm Accuracy: ±5% of measurement from 0 to 1000 mm/h |
| Electrical Conductivity | Range: 0–3 mS/cm Resolution: 0.001 mS/cm Accuracy: The greater of 0.005 mS/cm or 15% of measurement |
| Relative Humidity (RH) | Range: 0–100 % RH (0.00–1.00) Resolution: 0.1% RH Accuracy: Varies with temperature and humidity, See specification chart on page 13. Hysteresis: ±0.80% RH, typical RH Long-term Drift: ±0.25% RH/year, typical |
| Air Temperature | Range: –65 to +60 °C Resolution: 0.1 °C Accuracy: ±0.2 °C Measurement Uncertainty: ±0.6 °C from –20 to 50 °C |
| Humidity Sensor Temperature | Range: –40 to 50 °C Resolution: 0.1 °C Accuracy: ±1.0 °C |
| Vapor Pressure | Range: 0–47 kPa Resolution: 0.01 kPa Accuracy: Varies with temperature and humidity, ±0.2 kPa typical below 40 °C. See specification chart on page 12. |
| Barometric Pressure | Range: 1–120 kPa Resolution: 0.01 kPa Accuracy: ±0.05 kPa at 25 °C Equilibration: <10 ms Long-term Drift: < 0.1 kPa/year, typical |
| Horizontal Wind Speed | Range: 0–60 m/s Resolution: 0.01 m/s Accuracy: The greater of 6% of measurement or 0.3 m/s at 20 °C |
| Wind Gust | Range: 0–60 m/s Resolution: 0.01 m/s Accuracy: The greater of 6% of measurement or 0.3 m/s at 20 °C |
| Wind Direction | Range: 0–359° Resolution: 1° Accuracy: ±5° |
| Tilt | Range: 0° to 180° Resolution: 0.1° Accuracy: ±1° |
| Lightning Strike Count | Range: 0–65,535 strikes Resolution: 1 strike Accuracy: Variable with distance, >25% detection at <10km typical |
| Lightning Average Distance | Range: 0–40 km Resolution: 3 km Accuracy: Variable |
Communication Specifications
| Parameter | Specifications |
|---|---|
| Output | SDI-12 communication Modbus RS-485 |
| Data Logger Compatibility | METER ZL6 and EM60 data loggers or any data acquisition systems capable of switched 3.6- to 15.0-VDC excitation and SDI-12 communicationModbus RS-485 enabled ATMOS 41 Gen 2s are capable of SDI-12 communication and Modbus RS-485 with excitation 4 to 25 VDC |
Physical Specifications
| Parameter | Specifications |
|---|---|
| Dimensions | Diameter: 10.0 cm (3.9 in) Height: 28 cm (11.0 in), includes rain gauge filter |
| Operating Temperature Range | Minimum: –50 °C Typical: NA Maximum: 60 °C NOTE: Barometric pressure and relative humidity sensors operate accurately at a minimum of –40 °C |
| Cable Length | 5 m (standard)1.5 m (5-pin and 8-pin M12)75 m (maximum custom cable length for additional cost) NOTE: Contact Customer Support if a nonstandard cable length is needed. |
| Cable Diameter | 0.165 ±0.004 in (4.20 ±0.10 mm), with minimum jacket of 0.030 in (0.76 mm) |
| Connector Types | Stereo plug connector or 3 stripped and tinned wires5-pin M12 connector or 5 stripped and tinned wires8-pin M12 connector or 5 stripped and tinned wires |
| Stereo Plug Connector Diameter | 3.5-mm |
| Conductor Gauge | 22-AWG / 24-AWG drain wire |
Electrical and Timing Characteristics
| Parameter | Specifications |
|---|---|
| Supply Voltage (VCC to GND) | Minimum: 3.6 VDC continuous Typical: NA Maximum: 15.0 VDC continuous NOTE: The ATMOS 41 Gen 2 weather station must be continuously powered in order to work properly NOTE: For the ATMOS 41 Gen 2 weather station 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) | Minimum: NA Typical: 3.6 V Maximum: NA NOTE: For the ATMOS 41 weather station 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 Typical: N/A Maximum: N/A |
| 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 | Minimum: NA Typical: 800 ms Maximum: NA |
| Power Up Time (SDI Ready) — aRx! commands | Minimum: NA Typical: 3 s Maximum: NA |
| Measurement Duration | Minimum: NA Typical: 240 ms Maximum: 3000 ms |
Other Specifications
| Parameter | Specifications |
|---|---|
| Pyranometer Spectral Response | See graph in specification chart |
| Compliance | EM ISO/IEC 17050:2010 (CE Mark) |
| Prop 65 warning | Prop 65 warning |
| GSA | View GSA details |
Features
Applications
Water & Hydrological Research
Research & Scientific Studies
Environmental Monitoring System
Agriculture & Smart Farming
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