Dear Saifi,

welcome,

I would like to propose a method to measure the ware content of fog environment. I think one can trap the fogged air in a container with a known volume say one cubic meter then one seal it and then cool it to condense the water in the air closed in the container. Then one measures the volume of the condensed water it will be the water content in one cubic meter. Naturally one can use a container with less volume.

Best wishes

I'm sure that the water content could be measured optically: there are some IR wavelenghts that are absorbed by OH- (part of the H2O molecule) - namely one band around 1400 nm.

Thus it should be able to create a sensor that quantitatively measures the H2O content in air (whether gaseous or droplets) via the absorption.

Balluff (www.balluff.com) offers sensors capable to detect water by the absorption of some IR wavelength. For your ease:

https://www.balluff.com/local/gb/productfinder/#?data=attributes[0][key]%3Dbas_sensortype_opticalspecialfeature%26attributes[0][type]%3Denum%26attributes[0][multiple]%3Dtrue%26attributes[0][values][]%3D259750%26selection[ca]%3DA0001%26selection[cg]%3DG0103%26selection[product]%3DF01327%26selection[product_variant]%3D