04-14-2017, 06:35 AM
Join Date: Apr 2005
Location: Sacramento, CA, USA
iTrader Positive Rating: 100%
| | Re: Obi's PAR meter results
I have found that PAR measurements are hard to do accurately. Generally I assume my measurements are only accurate to the nearest 5 PAR. The number after the decimal point is totally irrelevant. CFL bulbs don't seem to produce a constant intensity, but are more likely to produce a slowly fluctuating output. When I turn one on the PAR starts low, slowly builds up to a maximum, then slowly drops back to a more average reading. I have no idea why this happens.