I was installing 3 new 48 inch T8 (smaller florescent) fixtures, and thought as long as I had all 3 brand new Reptison 5.0 bulbs, I would meter them to be sure i didn't get a dud. I used my tape and did all measurements 6" from the bulb, with no screen or anything between the meter and bulb.
As a reference, your readings should be about 15-35 at 6 inches WITH window screen between (Kevin suggestion).
The first readings I took was 6inches in from each end, and the middle, as I noticed the ends were much brighter. I got from 21 to 61 on the ends (43 average), and 10 to 27(19 average) on the middle.
As the bulbs warmed up, the readings did to, with the ends averaging 47, and the middle averaging 61.
My greatest average variance between bulbs was 40.33 on the low end, and 59.66 on the high end. That seems way to much of a difference........
This was surely not a scientific test, but it does make me think that 10.0 might cover some of the low end bulbs we get, and it makes me want to be better about getting the tribe out into sunlight more often!
Nick
As a reference, your readings should be about 15-35 at 6 inches WITH window screen between (Kevin suggestion).
The first readings I took was 6inches in from each end, and the middle, as I noticed the ends were much brighter. I got from 21 to 61 on the ends (43 average), and 10 to 27(19 average) on the middle.
As the bulbs warmed up, the readings did to, with the ends averaging 47, and the middle averaging 61.
My greatest average variance between bulbs was 40.33 on the low end, and 59.66 on the high end. That seems way to much of a difference........
This was surely not a scientific test, but it does make me think that 10.0 might cover some of the low end bulbs we get, and it makes me want to be better about getting the tribe out into sunlight more often!
Nick
