New Apogee SQ-620/40 Quantum Meter

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CobKits said:
accuracy wise the the apogee 520 is not that far off the accuracy of the Li-cor li-190r

going out to 1000nm is kind of overkill, you wont find anything past 800 with LEDs

i still recommend the cheap $150 hydrofarm quantum meters to people looking to do basic light measurements in their garden

this is more a tool for lighting designers/manufacturers, as a lot of people can come to wrong conclusions, like HPS PAR numbers would really be boosted by this but whats the point if its minimally photoactive?
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To me the hydrofarm meters look like overpriced lux meters. Big white circle, available for $15-20. Does hydrofarm use different technology or is it just a lux meter with a conversion rate?
 
PSUAGRO. said:
We can all agree it's a tool, not a light lab:-P

Never trusted that hydrofarm one, but cobby has been vouching it for yrs now. He's right though, for canopy use , even a lux meter will do
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you can do a lot with the worst of meters. any metric is better than no metric when balancing your canopy! i always tell people dont worry about the number... find the best looking cola in your garden, measure the light there, and replicate that measurement throughout your space
 
CobKits said:
find the best looking cola in your garden, measure the light there, and replicate that measurement throughout your space
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This is how I'm rolling, using the lux light meter app. If you wanna get fancy you then take lux and plug it into the apogee light converter app or find the conversion here. But data = repeatability
 
1212ham said:

Apogee Connect Overview

www.apogeeinstruments.com www.apogeeinstruments.com
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Rocket Soul said:
I had the 620 sensor quoted at 486€ + tax. They want you to buy a data logger aswelll for 383 but not sure its needed. Will find out
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You can buy directly from apogee for $575. It comes with the 620 and the handheld meter.
www.apogeeinstruments.com

MQ-620: 340-1040 nm ePFD Meter

The MQ-620 ePFD meter is designed to measure beyond traditional PAR (400-700 nm) and is intended only for use in LED environments. It has a hand-held meter, attached via cable, that displays and stores measurements.
www.apogeeinstruments.com www.apogeeinstruments.com

Otherwise the 620 by itself is $415
www.apogeeinstruments.com

SQ-620-SS 340-1040 nm ePFD Sensor

Measure beyond traditional PAR (400-700 nm) with the SQ-620 self-powered, analog ePFD sensor. Sensor has a rugged, self-cleaning head and is intended only for use in LED environments.
www.apogeeinstruments.com www.apogeeinstruments.com
 
end_of_the_tunnel said:
Tell us more. Were you hitting them with more than needed? How were you judging lighting levels before getting the 626? Is that the model with built-in logging function?
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I was hitting them with over 2x the amount of PPFD needed(750 vs 350). I was able to cut the power use from 500W 24/7hrs to 250W 16Hrs. I'm using 4 dimmable QB288 Panels in a 8x4 tent from Kingbrite (I contacted samsung and they confirmed that they did supply them their LEDS). Before this I just hung it at the recommended 18-24 inch height. It's the usb model so yes it has a logging function.
 
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MQ-620 in action.
PICKS up the as UVA well.
MH #'s are quite a bit higher if I remember correctly. No MQ-500 To compare to anymore.
Looking forward to using this & getting a decent passport meter or spectrometer.
Finally measuring real par. PBFD.
Hlg uva bar20200330_224548.jpgMH 2'20200330_223948.jpgMH 1', 2200+20200330_224013.jpgMH, 18"
20200330_224058.jpg
Hortri Daylight blue 600w.
Balanced, proven spectrum i know is neither to heavy in IR or UV, meaning it should be accurrately measurable even know its not led.
 
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CobKits said:
not with that sensor. it has near-zero response in the UVB range
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That is because of course Apogee will need to make one once we finally (ifwe do) use uvb diodes. We only go as low as 385nm now in Horticultural lights & thats new. If we keep finding thc increases using N/UV + UVA, i doubt we'll take the dangerous UVB path.
This tool will deffinetly be useful when measuring a plain white or 430-700
Vs a 365-385 to 810 nm led like will be available soon or even the newest UVA + Far Red , N/IR. Like the Hortrilux LED AMARE, several burples, knock-off custom nm boards or strips (this is now) as well as any company calling themselves Horticultural lighting as they will have to incorporate at the very minimum 740nm to stay competitive.
You will all see why i have always been EmmersonEffoctoFied.
The typical led is short on these fields.
If you had an MQ-320 Or even the 500, you would not see the benifits of your new fixture in numbers, which is what the plant sees & respond to.
The MQ-620 Paired with a decent spectrometer would be the sheeps tits.
 
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CobKits said:
interesting comparison on sensors (does not include latest offering SQ-620)


of interest are the graphs on pg 5 and the tables on pg 6.

apogee SQ-110 is not in the same class, and if i had to guess the hydrofarm would be right there with it. Again for light balancing of a garden (repeat measurments of same spectrum) either is still fine

even the li-cor isnt super accurate with HPS, none of them are super accurate with red LED. for our purposes +/- 2-3% is pretty minimal

by the metric of that paper, the response of the SQ-620 will exaggerate actual PAR (by definition of 400-700 nm) because it will sum data outside of the useful PAR range
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Lol! And you determined its outside the useful par range did you?
 
GreengenesGarden said:
Why are you calling names and trying to use feelings in a discussion about data and measuements?

You are measuring a bulb and saying its relevant somehow when it's not at all and you don't understand what the that meter measure. Stating that its coming from the near IR (<750nm) is wrong. 800nm+ is pure heat with zero plant response. RQE values to check. As well as all near IR studies are <730nm. And that pure heat is where that MH is spiking your new meter. What do you not get about it?

All bulbs have a HUGE heat spike when you don't cherry pick the information. The meter reads to 1100nm...so don't make a claim off a SPD only to 750nm. This is exactly why is says for LED's only.
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Not calling names or getting feeling involved any more then i can hold back, although i am Pissed you got my thread shut down by doing just that.
I understand how it works. Not claiming anything to do with 750nm (where'd you get that?) Oh, cuz i said id kike to see a tail drop there??? Oh my, you are something else. Lol!
Just showing an example of a proven bulb spectrum that does not get overly involved in the past 700 or under 340 range. And how the meter works on a bulb after telling everyone its only for led.
I have a well thought out theory about plants using up to 850nm but really just to 810nm.
Its posted already. Just my feelings. Absolutely Nothingvto do with you.
You have been wrong way more then right so i will kindly ask you again to kick rocks.
Not getting another one of my threads shut down.
I am right about spectrum more often then not where as you have never had a clue.
 
GreengenesGarden said:
Why do you not provide an support for your statements? You type I am wrong...but never provide an example. You type your right...but never provide an example. Wtf are you talking about??? Regardless it doesn't matter cause that is you trying to make it personal and use feelings instead of data and facts.

Little children are taught the 5 paragraph essay. And is something you could learn from. Here is the jist...

1) Into/hypothesis
2) Support with citations,
3) Support with citations,
4) Support with citations,
5) Conclusion supported by your citations and examples.


So about this, "of a proven bulb spectrum that does not get overly involved in the past 700 or under 340 range" That is not what is going. You are wrong, and here specifically how...
So let me try this again with more citations and maybe you will understand where you are incorrect in your understanding.

Notice in all these FULL SPD charts...the huge ~850nm pure heat spike. That spike is outside of the plants usable and responsive spectrum and is also agani why your meter is reading high with a bulb...and specifically why Apogee says for LED's only.
View attachment 4519731 View attachment 4519730 View attachment 4519734

Again...photons per energy input = nanometer x lambda. Lambda be a constant...as nm increase photons increase per the same amount of energy.

So 1 watt of energy in 850nm has 29% more photons than 1w of 660nm...and 113% more photons that 1w of 400nm.
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Great post bro except for the first half :peace:

 
GreengenesGarden said:
Why do you not provide an support for your statements? You type I am wrong...but never provide an example. You type your right...but never provide an example. Wtf are you talking about??? Regardless it doesn't matter cause that is you trying to make it personal and use feelings instead of data and facts.

Little children are taught the 5 paragraph essay. And is something you could learn from. Here is the jist...

1) Into/hypothesis
2) Support with citations,
3) Support with citations,
4) Support with citations,
5) Conclusion supported by your citations and examples.


So about this, "of a proven bulb spectrum that does not get overly involved in the past 700 or under 340 range" That is not what is going. You are wrong, and here specifically how...
So let me try this again with more citations and maybe you will understand where you are incorrect in your understanding.

Notice in all these FULL SPD charts...the huge ~850nm pure heat spike. That spike is outside of the plants usable and responsive spectrum and is also agani why your meter is reading high with a bulb...and specifically why Apogee says for LED's only.
View attachment 4519731 View attachment 4519730 View attachment 4519734

Again...photons per energy input = nanometer x lambda. Lambda be a constant...as nm increase photons increase per the same amount of energy.

So 1 watt of energy in 850nm has 29% more photons than 1w of 660nm...and 113% more photons that 1w of 400nm.
Click to expand...
Exactly what i have stated several times in layman's terms. Its funny cuz u talk all this like i have not already posted it x3 times or more on the thread YOU got shut down as well as others on discussion. Was just telling someone the other day the ir will be over weighted therefore its really only good for leds which typically cap around 730-760.
All youre doing is repeating me with an attitude.
I don't need to cite anything because i made no claims.
Just because i don't respond in detail to a waste of breathe like you doesn't mean i don't know or haven't posted it already.
Like i said before, You're just always behind.
In this case not being allowed to be a member & probably having me on ignore has stopped you rom realizing you trolling me just makes you look like more of a fool.
Last time before i have no choice as Mod has already informed me simply responding to you is enough to get shut down. Leave my thread.
Mind your buss .
If I wanna show the variations or readings with my meter under any light source i want, then i will.
You think I'm trying to show hps outshining your cobs or office strips, you're wrong.
 
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