Aranet Apogee Horizontal FOV IR Radiometer SI-1H1

Non-Contact Surface Temperature Measurement with a Wide Horizontal Field of View

The Aranet Apogee Horizontal FOV IR Radiometer SI-1H1 is a non-contact infrared radiometer that measures plant canopy or surface temperature, offering a practical, real-time indicator of crop response and water stress. Unlike standard circular field-of-view radiometers, the SI-1H1 has a distinctive rectangular field of view, 32° horizontally and 13° vertically, allowing it to be mounted at shallower angles while maximising the area measured without capturing background interference.

Why It Matters

Plant surface temperature is a valuable early indicator of water stress, often changing before visible signs of stress appear in the crop. However, getting a representative reading across a wide canopy area can be difficult with a standard radiometer, particularly in facility layouts where mounting options are limited. The SI-1H1’s wide horizontal field of view makes it easier to capture meaningful, far-field temperature data without needing to mount the sensor directly overhead.

The kit includes the Aranet Apogee Transmitter, the Apogee Angle Infrared Radiometer Mounting Bracket (AM-250), and the Apogee Horizontal Field-of-View Infrared Radiometer Sensor (SI-1H1). As with other Aranet Pro series sensors, it integrates with the Aranet base station and Aranet Cloud for wireless data transmission and remote monitoring.

The Aranet Apogee Horizontal FOV IR Radiometer SI-1H1 provides the wide-coverage, non-contact temperature data needed to monitor crop water status and surface conditions across challenging facility layouts.