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The SI-111 22º FOV (Field of View) sensor provides accurate measurement of the leaf-to air temperature gradient is important for irrigation scheduling and the determination of energy transfer, transpiration rate, and stomatal conductance in both single leaves and plant canopies.
Includes 5m cable & Solar Radiation protector AI-100.
This gradient is often less than 1 ºC, which means that leaf temperature should be measured to within 0.1 ºC.
To achieve this accuracy, we measure and correct for changes in the sensor body temperature.
The SI-111 comes with a standard 5 meter cable. Other Models with different cable length available (choose in 'Options'):
SI-111-L-10 Infrared Radiometer with Standard Field-of-View and 10 meter cable.
SI-111-L-15 Infrared Radiometer with Standard Field-of-View and 10 meter cable.
SI-111-L-20 Infrared Radiometer with Standard Field-of-View and 10 meter cable.
Apogee infrared radiometers are the most accurate non-contact temperature sensors available anywhere.
The SI-111 has a 22 degree half angle field of view. The sensor has tinned leads for connecting to a datalogger.
Applications include measuring the temperatures of road surfaces, plant canopies, and soil, snow and water surfaces. Measurement of surface temperature is a crucial component of energy transfer.
Accurate measurement of the leaf-to-air temperature gradient is essential to the determination of transpiration rate and stomatal conductance in both single leaves and plant canopies.
Approximate Sensitivity: 60 μV per C
The AI-100 radiation shield improves the performance of Apogee infrared sensors in applications where there is a significant solar load on the sensor housing.
This shield is included on all new infrared sensors and is offered as an accessory for customers wishing to retro-fit previously purchased infrared sensors.
Solar Radiation protector AI-100
Included with every SI-111
Apogee Mast Bracket AM-210