This is great for the price.
This is great for the price.
Farmer Geddon (06-01-22), GEORGE (07-01-22), Mac (06-01-22), scoot (06-01-22), V8 (06-01-22)
The guy that posted that sells nothing,just a geek.Originally Posted by J81
Farmer Geddon (06-01-22), GEORGE (07-01-22), Mac (06-01-22), V8 (06-01-22)
I think par meters are an unnecessary extravance. If the lights you are using are legit, even better if they have been 3rd party tested, by migro for example, you don't need to know the par
Using a cheap lux meter allows you to make sure the canopy is evenly lit, which is pretty much all 99 percent of us need to know.
When you do things right, people wont be sure you've done anything at all.
Blue61 (07-01-22), CityDweller (13-01-23), Farmer Geddon (07-01-22), GEORGE (07-01-22), Mac (07-01-22), mpsj (13-01-23), scoot (07-01-22)
I never heard that before. I'm interested. Keep talking.
Thanks
CityDweller (13-01-23), GEORGE (13-01-23), scoot (13-01-23)
There is a rough formula for converting Lux to PAR. I did a thread on it a few weeks back. I'll see if I can find it again.
CityDweller (13-01-23), GEORGE (13-01-23), scoot (13-01-23)
As far as I understand, the formula makes a lot of assumptions and guesses and result accuracy will vary greatly depending on the light. Different lights are providing different wavelengths.
As far as I know, the only way to get an accurate PAR reading is with a real PAR meter. The cheap par meters are actually LUX meters doing the guessed conversion formula.
If you have an android device (that's compatible. B1unt had some bad luck), this is the absolute jimmies for cheap.
I trust the source. "He's getting paid to do his job" arguments don't phase me any more.
CityDweller (13-01-23), GEORGE (13-01-23), IceCalibur (13-01-23), scoot (13-01-23)
He does say "for most spectrum" then he gets 980 on the meter and 930 on the app and says "you see they are the same"
Last edited by CityDweller; 13-01-23 at 05:30 PM.
I downloaded the app to try against my meter but not sure how to setup for my lights. The lights say wideband spectrum 680nm–720nm range
Nothing on the setup list comes close.
A wee google search and:
A PAR meter is measuring how many photons (within the portion of the spectrum useful for photosynthesis) are striking the receptor. Every photon is counted the same. A LUX meter measures light in the visible spectrum and weights the light best seen by human eyes.
Lux meters can detect and measure all white light, especially from the sun or incandescent bulb. Lux meters are unable to accurately pick up LED light as LED lights have a higher blue light wavelength. Additionally, lux meters will not be able to tell the luminosity of blue, red or purple LED lights.
CityDweller (13-01-23)
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