7 ms·
So I'm in Paradise, CA right now packing to move. --- Inside --- PM1.0: 4 µg/㎥ PM2.5: 5 µg/㎥ PM10.0: 5 µg/㎥ ^-- Dual MPR "2900" / MERV "14" filters 25x356x
by hexbinencoded 6y ago
So I'm in Paradise, CA right now packing to move.
--- Inside ---
PM1.0: 4 µg/㎥
PM2.5: 5 µg/㎥
PM10.0: 5 µg/㎥
^-- Dual MPR "2900" / MERV "14" filters 25x356x610mm (1x14x24") with fan on @ 50% duty cycle
--- Outside (as of writing) ---
Looks gray like "fog" during the day, but it's UFPs.
PM1.0: 31 µg/㎥
PM2.5: 57 µg/㎥
PM10.0: 75 µg/㎥
--- Outside (recorded on 28 Sep 2020, sky completely obscured dark as night and the sun red like blood) ---
PM1.0: 815 µg/㎥
PM2.5: 893 µg/㎥
PM10.0: 920 µg/㎥
Data collection method: 15 minute sliding-window avg
Data collection sensor: Plantower PMS5003 (same as on the PurpleAir PA-II)
- jhpankow 6y agoNote this sensor only counts particles without regard for size and then estimates distribution of particles based on an equation.
- shortandsweet 6y agoWhich does it actually measure?
- jhpankow 6y agoIt's just an emitter and detector with a fan pushing air between them. It counts any particle large enough to block the light source. If you look up the sensor there is a datasheet which describes how they arrive at the counts.
- deleted 6y ago[deleted]
- jeffbee 6y agoJust out of curiosity, what was the last straw? Anyone still living in Paradise seems to have the tenacity of a barnacle.
- guenthert 6y agoAnd that's just the particles. The more or less toxic chemicals which burned during the wildfires and add to that "aroma" aren't recorded. Here in the Bay Area it wasn't nearly as bad, still the smog didn't exactly smell of cedars.