ATMOS 51

Directly measure water loss from the surfaces of your plants and soils to ensure accurate irrigation regardless of growth stage, canopy closure, or plant water status.

• • Direct measurement of actual ET at field-scale
  • Uses variance Bowen ratio (VBR) to measure fluxes using a combination of high-frequency temperature, specific humidity, and solar radiation
  • Simple plug-and-play setup with METER data loggers for remote near-real-time data access

Overview / Features

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 optimise 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. Characterise plant hydraulic stress, optimise 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