LED - HPS Comparison

[peregrines]

Hi Folks!


I just compared my Cree3590 with my HPS 600W (Adjust a Wing) with my iPhone Luxmeter ( Apogee Quantum Meter is not yet delivered to my door) and made a strange discovery:


Cree3590 DB Bin (3500K) Running on Meanwell ELG150 @30cm distance: 6858 Lux
HPS Slyvania 600Watt on Lumatek VSG @ 45cm distance: 61474 Lux

I know, Lux doesnt really count much for plant-growth, but why is my HPS at Plant canopy giving almost 10 times more light?

Or do you think something is wrong with my Cree Setup? I am running them @ 1400mA for better efficiency with one COB per sqft.

 

[Goerilla]

Sounds strange to me. I measure 20000 lux from my 100W china led run at 50W at the same distance.(30 cm)
Disclaimer: Yes I know, lux and lumens are for humans.

Rilla.

 

[verticalgrow]

Hi Folks!


I just compared my Cree3590 with my HPS 600W (Adjust a Wing) with my iPhone Luxmeter ( Apogee Quantum Meter is not yet delivered to my door) and made a strange discovery:


Cree3590 DB Bin (3500K) Running on Meanwell ELG150 @30cm distance: 6858 Lux
HPS Slyvania 600Watt on Lumatek VSG @ 45cm distance: 61474 Lux

I know, Lux doesnt really count much for plant-growth, but why is my HPS at Plant canopy giving almost 10 times more light?

Or do you think something is wrong with my Cree Setup? I am running them @ 1400mA for better efficiency with one COB per sqft.

are u running 600W of cree3590's in ur Lux test

 

[KonopCh]

You only meassure one COB.

 

[CobKits]

Or do you think something is wrong with my Cree Setup? I am running them @ 1400mA

have you measured this? unless youre powering the ELG with 220V its probably putting out ~1050 mA

 

[sixstring2112]

get a reading from the hps about 18 inches off to one side or the other and see how bad it drops off

 

[HemiGrind]

I thought LUX meters weren't accurate for measuring LED's ??

 

[CobKits]

I thought LUX meters weren't accurate for measuring LED's ??

theyre not bad for white leds

 

[nfhiggs]

I thought LUX meters weren't accurate for measuring LED's ??

They are fine for white light, not good for red/blue monos.

 

[nfhiggs]

have you measured this? unless youre powering the ELG with 220V its probably putting out ~1050 mA

Put an ammeter on one of those cobs and see exactly what they are getting.

 

[HemiGrind]

theyre not bad for white leds

Cool, thanks for the clarification.

 

[Los Reefersaurus]

Ya you got something going on there, at 30 cm I got 37-39,000 LUX I am using 3590-3000k bd 90cri running at 1.05 amps , 11 cobs and a total of 428ish volts