A pair of potentially useful sensors
http://www.envirotechsensors.com/SVS1_Sentry.htm
From their site
"Measures atmospheric visibility, also known as meteorological optical range (MOR) by determining the amount of light scattered by particles (smoke, dust, haze, fog, rain, & snow) in the air that passes through the optical sample volume."
This probably won't be useful for measuring low cloud cover or high fog layers at night.
$299, takes 8 thermocouple inputs of all types (K, T, J etc) and feeds them in through a USB port to included software for recording.
From their site
"Measures atmospheric visibility, also known as meteorological optical range (MOR) by determining the amount of light scattered by particles (smoke, dust, haze, fog, rain, & snow) in the air that passes through the optical sample volume."
This probably won't be useful for measuring low cloud cover or high fog layers at night.
$299, takes 8 thermocouple inputs of all types (K, T, J etc) and feeds them in through a USB port to included software for recording.
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