Measuring Kessil A360WE PAR

DT Prime · Oct 30, 2016

mcarroll said:
I don't need a re-measure if that's what you've seen before, but are you guessing like me?

Nope I actually checked for you, at 75/50 it's about 1500 which is what I'm running right now

saltyfilmfolks · Oct 30, 2016

DT Prime said:
Water surface at 100/100 is 750-850 par, 5"-6" or so under is roughly 300, 10" about 175-200, 18" about 125-150

Hey,Thanks for doing that!

Thor2j · Oct 30, 2016

DT Prime said:
Nope I actually checked for you, at 75/50 it's about 1500 which is what I'm running right now

What are u measuring this with and what percent white/blue are u using??

DT Prime · Oct 30, 2016

Thor2j said:
What are u measuring this with and what percent white/blue are u using??

Same meter, and I cannot say specific white/blue levels but 100 on kessils is white and 0 is blue so you can infer from there. I'm applying a 115% modifier based on the 110-120% recommended by apogee to keep it simple so margin or error is at least 5%+/-. I'm also using the provided underwater conversion from apogee for any submerged readings. These measurements are definitely not exact but should be reasonably close.

Thor2j · Oct 30, 2016

DT Prime said:
Same meter, and I cannot say specific white/blue levels but 100 on kessils is white and 0 is blue so you can infer from there. I'm applying a 115% modifier based on the 110-120% recommended by apogee to keep it simple so margin or error is at least 5%+/-. I'm also using the provided underwater conversion from apogee for any submerged readings. These measurements are definitely not exact but should be reasonably close.

Apogees formulas are getting more confusing. At first they said add 20% or so. Now there's an excel formula depending on how deep it is. Basically subtracts almost as much as it adds.

DT Prime · Oct 30, 2016

Thor2j said:
Apogees formulas are getting more confusing. At first they said add 20% or so. Now there's an excel formula depending on how deep it is. Basically subtracts almost as much as it adds.

Yeah it definitely is more "forgiving" on the lower depth readings for whatever reason, almost no reduction vs 15-20% at highest points. I'm applying the 15% addition on top of that to compensate for the spectrum issues.