question:optical-pm
question:optical-pm


Author Comment Last activity Moderation
guolivar "You're right, the effect of humidity would be to change the "apparent" size but it's not just increasing the number of particles that now fall in t..." | Read more » almost 5 years ago
jeffalk " My quick perusal of the attached pdf didn't find anything about effects of humidity. What you say about humidity effecting size makes sense but ..." | Read more » almost 5 years ago
stevie "Hi Jeff, thanks! This is great. I'll copy the question link into that email chain as well. Think some of the readers there would be interested, it'..." | Read more » almost 5 years ago
stevie "Wow. These are awesome resources!! Thanks for clarifying the seeing/sizing distinction. " | Read more » almost 5 years ago
guolivar "Yes, environmental conditions do affect the ability of an optical sensor, not too much to "see" a particle but rather to "size" it. All of these o..." | Read more » almost 5 years ago
jeffalk " Yes is the simple answer: high humidity and/or moisture can effect particulate counts by raising them. Once you accept this the next step is how..." | Read more » almost 5 years ago