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Apogee Mobile Apps

 

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Clear Sky Calculator

This calculator determines the intensity of radiation falling on a horizontal surface at any time of the day in any location in the world. The primary use of this calculator is to determine the need for recalibration of radiation sensors. It is most accurate when used near solar noon in the summer months.

FEATURES

  • Autofill location, date, and time
  • Determine if sensors needs recalibration
  • View intermediate calculation values
  • No internet connection required
  • Easy to use
  • Free

Download:

Get it on Google Play

Alternatively, you can use our online version at clearskycalculator.com.

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Field of View Calculator

FOV ultimately determines how much surface area an IRR can see at any given distance and tilt angle. The target area is a circle from which 98 percent of the radiation viewed by the infrared radiometer detector is emitted. A center-weighted average of that target area is used to determine the mV signal. As the tilt angle is increased from zero degrees at a given height, the target area increases and transforms from being a circle to an ellipse.

This calculator offers a simple way to estimate visible surface area based on sensor height and angle. You are able to select any Apogee Infrared Radiometer model with differencing fields of view to compare results.

FEATURES

  • Quickly determine IRR target area size
  • View intermediate calculation values
  • No internet connection needed
  • Easy to use
  • Free

Download:

Get it on Google Play

Alternatively, you can download an excel sheet calculator, or use our online tool.

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Light Unit Converter

This app provides conversions between several light units such as shortwave radiation, photosynthetic photon flux, lux, and footcandles. Choose from several light sources. 

FEATURES

  • Choose from common light sources
  • No internet connection needed
  • Easy to use
  • Free

 

Download:

Get it on Google Play