I received my Dyloc DC1100 today so I thought I would run a few tests. Following are the results:
House
In the morning I took measurements in the Kitchen and Master Bedroom. Both were between about 28-35 for the 1um reading and around 3-5 for the 5um.
Later in the evening after dinner the kitchen reading had gone up to just over 100. I let it run for a couple of hours and it dropped to around 50. No idea why it went up so high.
Workshop
I have a 2HP Taiwanese cyclone in a room separate from the main shop. Air returns through 2 - 2'x2'x4" filters.
When I started the test the shop had about the same reading as my house (33/4). I turned on the dust collector and noticed the readings went up within a few minutes to a peak of 115/21. I had lunch and came back in about an hour and the reading was down to (29/1).
My worst dust generator is the Unisaw so I took a 14" long piece of 1" fir and cut 23 - 1/16" strips. The readings peaked in about 5 minutes to (2817/648). I then left the shop with the dust collector on to see how long it would take to get the air quality back to normal. After 90 minutes the readings were back down to (33/2).
For the next test I turned off the dust collector and cut another 23 strips. This time the readings peaked at (6048/1941). Again I left the shop and waited however this time I left the DC off. As you can see in the attached graphs after 1 hour the readings were still just above the peak readings I obtained with the DC on. As I was impatient I turned the DC back on about 95 minutes after making the cuts. About 80 minutes later the readings were back down to (35/0).
I left the DC running and found the best readings I obtained were 17/0 which is better than inside my house.
The attached graphs show the particle counts over a 6 hour period for both the 1 and 5um particles. Both graphs use the same data but are plotted on log and linear scales. The straight lines of the log graphs confirm that the dust particle counts decrease exponentially over time and much faster with the DC on. The left scale is for the 1um counts and the right scale is for 5um.
Hopefully others will post their data once they receive their meters.
Greg