Model MI
$798.00
Model SI
$598.00
The Infrared Radiometer measures remote surface temperatures to within 0.2 C.
Cleaning the Optical Path of the Infrared Sensor:
A primary source of inaccurate measurements for any radiation sensor is blocking of the optical path to the detector. The window in the Apogee infrared sensor is inset and protected, but it can become partially blocked in three ways:
1. Spiders can make a nest in the entrance. We recommend using a cotton swab to apply a spider repellent around the entrance to the aperture (not on the sensor window itself).
2. Calcium deposits can accumulate on the window if irrigation water sprays up on the head. These typically leave a thin white film on the surface and can be removed with a dilute acid like vinegar. Calcium deposits cannot be removed with solvents such as alcohol or acetone.
3. Dust and dirt can be deposited in the aperture in windy environments and are best cleaned with deionized water, rubbing alcohol, or in extreme cases, acetone.
Clean the inner threads and sensor window using a cotton swab dipped in the appropriate solvent. It is important to use only gentle pressure on the window to avoid scratching the thin optical coating on the window. Let the solvent do the cleaning, not mechanical force. The cleaning should be repeated with a second, fresh cotton swab to ensure a completely clean window. Sensors can go for many months and stay clean in some environments, but frequent cleaning is needed in other environments.
