Don't estimate ET. Measure it
Knowing exactly how much water a canopy loses during the day is
vital to many applications. From irrigation planning to quantifying
hydrological changes over time to modelling an ecosystem's energy
balance, direct measurements of evapotranspiration can give you the
information you need to make the right decisions at the right
time.
The ATMOS 51 VBR Actual ET Sensor takes your data beyond reference
evapotranspiration values, using a variance Bowen ratio technique
to simplify water and energy balance measurements in the field.
Now, you can use actual ET data to accurately measure plant water
use throughout the day, identify water limitations, and detect
plant stress signals earlier.
Scale measurements to your application
Like conventional field-scale water flux measurements, such as
eddy covariance towers, the ATMOS 51 abides by turbulent transport
principles to measure energy and water exchange via dynamic eddies.
This compact unit measures the same area at a fraction of the cost
and with less infrastructure, so you can optimize ET measurements
to your application without breaking your budget. Use the ATMOS 51
to supplement or expand ET measurements throughout your eddy
covariance tower footprint or validate crop ET (reference ET) by
pairing it with the all-in-one weather stations in your field.
More precision for better decisions
Going beyond reference ET and crop ET means you know exactly how
much water is leaving the system. Characterize plant hydraulic
stress, optimize irrigation, steer crops, and monitor water
conservation efforts with accurate measurements from your site.
Combine actual ET with precipitation and soil moisture measurements
to get a clear, mechanistic understanding of water movement into
and out of a system.
Simple setup and data management
The ATMOS 51 uses the same compact design as our other popular
ATMOS devices. Setup is as simple as mounting the sensor to an
instrument mast and plugging it into a ZL6 data logger. Go from
setup to streaming data in as little as 20 minutes.
Feature summary
- Actual ET measurements direct from your project site
- High frequency temperature, specific humidity, and solar
radiation extend data
- Plug-and-play compatibility with ZL6 data loggers and ZENTRA
Cloud
- Easy installation with the built-in levelling bracket
- Reduced maintenance needs due to the UV-resistant plastic
housing
| Specifications |
| Solar radiation |
Range: 0 to 1750 W/m2
Resolution: 1 W/m2
Accuracy: ± 5% of measurement typical |
| Relative humidity |
Range: 0-100% RH (0.00-1.00)
Resolution: ±0.01% RH
Accuracy: ±1% RH, typical
Long-term drift: ±0.25% of RH/year, typical |
| Humidity Sensor Temperature |
Range: -40 to 60 °C
Resolution: 0.01 °C
Accuracy: ±0.1 °C |
| Barometric Pressure |
Range: 26-126 kPa
Resolution: 0.01 kPa
Accuracy: ±0.003 kPa at 25 °C
Equilibration: < 10 ms
Long-term drift: < 0.03 kPa/year, typical |
| Tilt |
Range: 0°-180°
Resolution: 0.1°
Accuracy: ±1° |
|
| Dimensions |
Diameter: 14 cm (5.5 in)
Height: 19 cm (7.5 in) |
| Cable length |
5 m
|
Datalogger Compatibility
|
METER: ZL6
Other: Any data acquisition system capable of 3.6-15V excitation
and serial or SDI-12 communication |
|
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Labcell Limited
exclusively supply and support METER products in the UK &
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Non UK/Ireland Customers, please contact METER Environment at:www.metergroup.com/environment/
