LI-710 Evapotranspiration Sensor
Accurately measure evapotranspiration with this simplified, easy-to-use sensor.
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New Direct and Economical Evapotranspiration Measurements for Immediate Societal Benefits
New Direct and Economical Evapotranspiration Measurements for Immediate Societal Benefits
with Dr. George Burba
Quality
Uses established scientific methods
Accuracy
Direct measurements instead of estimates
Simplicity
Easy to connect, operate, and maintain
Actual evapotranspiration measurements
The direct measurement of evapotranspiration hasn’t been widely performed because of the cost and complexity of measurement methods. Indirect methods rely on estimates based on crop coefficients and reference or potential evapotranspiration, which leads to uncertainty.
The LI-710 measures actual evapotranspiration—water vapor moving out of the field and into the atmosphere—without the need for crop coefficients. It works over any relatively flat and uniform ground cover at field or ecosystem scale.
Research-grade accuracy
A comparison of the LI-710 to traditional eddy covariance and Penman-Monteith Estimates shows that the LI-710 reports evapotranspiration with the accuracy of traditional eddy covariance.
The LI-710 applies the eddy covariance method to measure vertical wind and water vapor concentration at 10 Hz, then provides fully processed results every 30 minutes.
Easy to use and maintain
The LI-710 Evapotranspiration Sensor gives you answers—no data processing is necessary. From mounting to output, it is designed for ease-of-use.
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Mounting
Attach it to a simple pole—no tower or tripod needed—and it is compatible with NuRail® and other commonly used mounting hardware.
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Power
Its 1.5 W power requirement means you only need a battery and small solar panel to run it.
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Output
SDI-12 output from a single cable makes it easy to collect data and integrate the sensor into existing infrastructures.
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Maintenance
It requires no calibration and is low maintenance.
A high-quality, cost-effective solution
With the LI-710, you get high-quality evapotranspiration measurements for a fraction of the cost of more complex direct measurement methods. You can deploy multiple sensors to expand your data collection footprint. You don’t need to hire a data analyst, and it has low ongoing power and maintenance costs.
Remote access to LI-710 measurement data
Upgrade the LI-710 to the Water Node and access evapotranspiration measurement data from anywhere. Add the IoE Module to the system and transfer data directly to LI-COR Cloud—where it can be easily viewed, shared, and downloaded at any time and place.
Get access to LI-COR Cloud—the cloud-based software that hosts your data—at no cost when you make any IoE Module purchase.
Learn moreThe LI-710 or traditional eddy covariance?
The LI-710 measures evapotranspiration at the field scale as accurately as traditional eddy covariance systems, but there are differences.
The LI-710 is a straightforward solution if you want to directly measure water vapor moving from the field into the atmosphere. However, if you want to measure CO2 flux, integrate other sensor inputs, or process raw data, you’ll want a complete eddy covariance system.
Which is right for you—the LI-710 Evapotranspiration Sensor or a traditional eddy covariance system? The table below compares the two.
| Feature | LI-710 | LI-7500DS |
|---|---|---|
| Measures actual evapotranspiration | Yes | Yes |
| Measures at the field scale | Yes | Yes |
| Measures CO2 flux | No | Yes |
| Allows customized data processing | No | Yes |
| Provides raw data | No | Yes |
| Integrates other sensor inputs | No | Yes |
If you have additional questions and would like to discuss your specific needs, contact envsales@licor.com
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