Use the robust VP-3 sensor with soil moisture probes in microclimate and evapotranspiration studies
Link with non-Decagon data loggers with the easy-to-use SDI-12 communication protocol.
This 5 cm x 2 cm sensor is able to fit into the smallest of spaces.
Thanks to its unique Teflon screen, the relative humidity sensor can survive considerable waterflow. Naturally, it won’t be transmitting precisely while waterlogged; but as soon as it has dried out, it’s back to full functionality.
The Teflon screen protects the sensor from liquids and dust without hindering diffusion of water vapor. The protected sensor is still able to rapidly respond to differences in humidity.
Accurate relative humidity readings need precise air temperature readings taken at the same place and time. This sensor takes both measurements at the same time for the best possible precision.
The contained radiation shield is engineered to improve air temperature readings by minimizing radiation and maximizing airflow over the face of the sensor. Specifically engineered to maintain the correlation between actual air temperature and sensor air temperature while keeping the shield size mininal.
|HUMIDITY RESOLUTION||0.1% RH|
|VAPOR PRESSURE RESOLUTION||0.01 kPa|
|HUMIDITY RANGE||0-100% RH|
|TEMPERATURE RANGE||-40°C to 80°C|
|VAPOR PRESSURE RANGE||0-47 kPa|
|SENSOR TYPE||Digital Capacitance and Thermistor|
|OPERATING ENVIRONMENT||-40°C to 80°C|
|CABLE LENGTH||5 m|
|CABLE CONNECTOR TYPES||3.5 mm “stereo” plug or three-wire|
||3.6-15 VDC, 0.03 mA quiescent, 4 mA during 300 ms measurement|
|SENSOR DIMENSIONS||5.4 cm x 1.96 cm|
|RADIATION SHIELD DIMENSIONS||8.9 cm height, 10.16 cm diameter, 13.34 cm wide (bracket)|
|DATA LOGGER COMPATIBILITY (NOT EXCLUSIVE)||Decagon Em50 series (firmware 2.11 or newer), ProCheck C (Rev 1.5), Campbell Scientific|
|WARRANTY||One year, parts and labor|
Operating Temperatures: -40 °C to 80 °C
Soil, Moisture, Temperature Measurement
Soil / Fertiliser Drainage
Water Level Monitoring
Micro-climate and Canopy
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