Estimating the Canopy Fraction in your IRR Field of View
A common problem many individuals face when making canopy temperature measurements with an infrared radiometer (IRR) involves estimating the fraction of the field of view that is occupied by canopy (leaves and stems) and soil. This is important in…
Energy Benefits of Highly Reflective Rooftops
Ten years ago I began building my own home in Nibley, Utah. When it came time to pick the color for the asphalt shingles I talked my wife into a light gray color, compromising aesthetics in lieu of performance. Although I didn’t have any data to back…
Protecting Your IRR from Spiders
When making measurements and carrying out experiments, scientists tend to spend a great deal of time and care in selecting the right instruments, calculating uncertainty, and making sure conditions are acceptable. One of the last things on the minds…
How to take IRR Temperature Measurements without a Datalogger
Customers occasionally ask us if it is possible to use our infrared radiometer (IRR) sensors without a programmable datalogger. This is difficult, but not impossible. This blog describes the requirements.
For starters, a voltmeter with mic…
Field of View
Due to recent product development, Apogee now offers three different options in choosing a Field-of-View (FOV ) for the SI-100 series infrared radiometers (IRRs). FOV is reported as the half-angle of the apex of the cone formed by the target (cone ba…