Four-component measurement of net radiation with black-body pyranometers and pyrgeometers pairs
Digital Output
An on-board 24-bit A to D converter processes the signals from the individual sensors and transmits the data via a digital SDI-12 output. The net radiiometers are also available with Modbus RS-232/RS-485 communications protocols. Users can choose to output net radiation, net longwave radiation, net shortwave radiation, or each component sensor's individual readings. The digital output option eliminates the need for multiple analog datalogger channels to measure the four components of net radiation.
Compact and Lightweight
The small, lightweight design of the radiometer facilitates easy mounting to a cross arm using the AM-500 mounting bracket. The bracket simplifies precision leveling of the sensors.
Four-Component Net Radiometer Design
The four-component net radiometer consists of blackbody pyranometer and pyrgeometer pairs that face both upwards and downwards to provide incoming and outgoing shortwave and longwave radiation measurements. Each individual sensor measures the four separate components of net radiation for best accuracy.
Heated Sensors
Each of the four sensors includes a 0.2 W heater that keeps water (liquid and frozen) off the sensors. This minimizes errors caused when dew, frost, rain, or snow block the radiation path. Heaters can be turned off through SDI-12 commands to save power when they are not needed.
Typical Applications
Net radiation is a key variable in surface energy balance and influences turbulent fluxes, including evapotranspiration. Applications of the net radiometers also include measurements taken on flux towers and weather stations.
Accurate and Affordable
Our product provides research-grade accuracy, comparable to other four-component net radiometers, at a lower cost.
Warranty and Support
All Apogee products are backed by an industry-leading four year warranty and outstanding customer support.
