Instruments in Wondo Genet College Weather Station

1. Datalogger

Model name: Campbell Scientific Instruments (CSI) CR1000 (https://www.campbellsci.com/cr1000)

2. Soil temperature probe

Model name: CSI 107 (http://s.campbellsci.com/documents/us/manuals/107.pdf)

Survival Range: –50 to 100 °C

Measurement Range: –35 to 50 °C

Accuracy

Worst case:

±0.4 °C (–24 to 48 °C)

±0.9 °C (–35 to 50 °C)

Interchangeability Error:

±0.10 °C (0 to 50 °C)

±0.20 °C at –10 °C

±0.30 °C at –20 °C

±0.40 °C at –30 °C

±0.50 °C at –40 °C

3. Soil moisture measurement

Model name: CSI CS650 Water Content Reflectometer (http://s.campbellsci.com/documents/af/manuals/cs650.pdf)

Volumetric Water Content (VWC) Range: 5% to 50%

Accuracy ±3% VWC typical in mineral soils where solution EC ≤ 3 dS/m

Precision < 0.05%

4. Air temperature and Relative Humidity

Model name: CSI HC2S3 temperature and Relative Humidity Probe (http://s.campbellsci.com/documents/eu/manuals/hc2s3.pdf)
Temperature Measurement Range: -50°C to +100°C (default -40°C to + 60°C)

Accuracy at 23°C: ±0.1°C with standard configuration settings

Relative Humidity Measurement Range: 0 to 100% non-condensing

Accuracy at 23°C ±0.8% RH with standard configuration settings

5. Wind speed and direction

Model name: Young Wind Monitor Model 05103 (http://www.youngusa.com/Manuals/05103-90(K).pdf)

Wind speed

Range 0 to 100 m/s (224 mph)

Distance Constant 2.7 m (8.9 ft.) for 63% recovery

Threshold Sensitivity 1.0 m/s (2.2 mph)

Wind direction

Range 360° mechanical, 355° electrical (5° open)

Delay Distance 1.3 m (4.3 ft) for 50% recovery

Threshold Sensitivity 1.1 m/s (2.5 mph) at 10° displacement

6. Pyranometer

Model name: Skye SKS1110 (http://ppsystems.com/wp-content/uploads/Pyranometer.pdf)
Sensor: Cosine corrected head

Detector: Silicon photocell

Sensitivity-current: 5μA/100W m^-2
Working range: 0-5000 W m^-2
Linearity error: < 0.2%

Cosine error: 3%

7. Precipitation

Model name: YOUNG Model 52202 Tipping Bucket Rain Gauge (http://www.youngusa.com/Manuals/52202-90(H).pdf)

Catchment area: 200 cm2

Resolution: 0.1 mm per tip

Accuracy: 2 % up to 25 mm / hr, 3% up to 50 mm/hr

8. Solar panel 

10w CSI SP10

9. Battery

PS100

10. 3m stand CSI CM10/3 with lightning protection