HPL200P PPFD Meter

am not in need for myself as i have the spectromaster, but i just saw that there is a quite cheap PPFD meter named
HPL200P PPFD Meter

its about 200$ on ali and measures from 400-700.
Hoptek seems to be the manufactorer.
i havent tested it myself but would think it will give you way more usable readings then a lot other solutions out there (at least for android users).

cobshopgrow said:

am not in need for myself as i have the spectromaster, but i just saw that there is a quite cheap PPFD meter named
HPL200P PPFD Meter

its about 200$ on ali and measures from 400-700.

HPL200P PPFD Meter

www.hoptek.net

Hoptek seems to be the manufactorer.
i havent tested it myself but would think it will give you way more usable readings then a lot other solutions out there (at least for android users).

Click to expand...

Damn. Looks like it’s all Bluetooth right to your phone?

I might just scoop it up as a back up.

looks to me too that its BTed to your phone.

haha, will give a nice back up for sure, while i hope your spectrometer will last you some time.
its for sure a good unit to lend to friends.

cobshopgrow said:

looks to me too that its BTed to your phone.

haha, will give a nice back up for sure, while i hope your spectrometer will last you some time.
its for sure a good unit to lend to friends.

Click to expand...

Just tried to send a inquiry, for some reason my phone is bugging out I’ll have to do it from my iPad when I get home.

on aliexpress they can be ordered directly, some offers include express shipping for about 230$.

also saw that it looks like they include a small remote display which gets the data by bluetooth a android app can be used alternatively.

cobshopgrow said:

am not in need for myself as i have the spectromaster, but i just saw that there is a quite cheap PPFD meter named
HPL200P PPFD Meter

its about 200$ on ali and measures from 400-700.

HPL200P PPFD Meter

www.hoptek.net

Hoptek seems to be the manufactorer.
i havent tested it myself but would think it will give you way more usable readings then a lot other solutions out there (at least for android users).

Click to expand...

Really good spectral response curve, like

Nice find ......... Interesting to see how it compares to licor/apogee? Can't complain much at this price though

couldnt find a comparsion to other devices, its prob too new.
over at Led gardener there is a user of this unit.

Salomentin linked a "cheap" spectrometer, not bad for the price.

ive heard that Teknik isnt a fan of this HPL200P PPFD Meter .
its not precise he said.

@grotbags , where you able to compare your meter to something else?

i didnt remebered right, in this thread they refer to the
OHSP-350

would of course be nice if some would have a comparsion of a recent unit to a apogee or similar.

cobshopgrow said:

ive heard that Teknik isnt a fan of this HPL200P PPFD Meter .
its not precise he said.

@grotbags , where you able to compare your meter to something else?

PAR meter and Spectrometer Hopoocolor OHSP350P - LEDgardener

i didnt remebered right, in this thread they refer to the
OHSP-350

would of course be nice if some would have a comparsion of a recent unit to a apogee or similar.

Click to expand...

i will hopefully get a chance to do some tests this week, i will have to read the instructions and have a play because out of the box the ohsp350p will give you the par reading from 350nm to 850nm but i belive you can set the sample range to any parameter you want ie if you just wanted to know your uva par levels you could set it from 350nm to 400nm so for a test against my apogee it needs to be set for 400nm to 700nm.

teknik said he tested some hoppo colour stuff a while back and wasnt impressed with there accuracy when asked which model/models he tested and which parameters werent accurate he couldnt remember so i think its safe to say he isnt talking about the relatively newer models we are discusing here.

i have tested 5000k 98cri nichia optisolis, 2000k 90cri nichia, 2700k 90cri crees, samsung 301b's in 3000k + 5000k 80 cri and they all look accurate when comparing to the manufactures spec sheets so i am happy with the spectrum analyzer on the hoppo which is the main reason i bought it.

wow, thanks for the feedback.
even if you dont find a feature to limit the range i bet as long youre not using UVA monos or FR monos the values should be comparable, halfway.
its very cool that you have a apogee to compare to !
if i am right Tekniks tests are made a few years ago, there maybe where some changes.
am not related to the manufactorer or anything, if these hoppo units give usable values, welcome, if not, so be it.

sadly teknik isnt here anymore to comment on this, just wanted to forward his thought.
he does like the pulse unit BK78 is using btw (not tested by himself so far).

cobshopgrow said:

wow, thanks for the feedback.
even if you dont find a feature to limit the range i bet as long youre not using UVA monos or FR monos the values should be comparable, halfway.
its very cool that you have a apogee to compare to !
if i am right Tekniks tests are made a few years ago, there maybe where some changes.
am not related to the manufactorer or anything, if these hoppo units give usable values, welcome, if not, so be it.

sadly teknik isnt here anymore to comment on this, just wanted to forward his thought.
he does like the pulse unit BK78 is using btw (not tested by himself so far).

Click to expand...

I’m going to buy that first one you linked, I’m intrigued by the whole ppfd/spectrum stuff now that I got my sensor.

I forget the kind of sensor the pulse uses but it’s probably like one of these sensors from alibaba is my guess. Looks the same kind of

you will know more then me soon then.
just trying to share all infos i can get and if this unit is rubish dont blame me (the unit linked above is at least not very pricey).

the numbers you will get will speak for themself.

salmonetin said:

...mmm... Pulse One (old) or Pulse Pro (new)?...

Pulse One
...TOO CURIOUS ABOUT WHAT BRAND AND MODEL OF LUX SENSOR (AND OTHER SENSORS) THEY USE....

Light –
The Pulse One Measures Light using a Lux Sensor.....
Using the Lux Sensor you can easily see if your Light came on when they were supposed to or if there was a problem that needs to be corrected.

Light:
10 ms Response, Relative Light Intensity

Pulse Pro
...TOO CURIOUS ABOUT WHAT BRAND AND MODEL OF LUX SENSOR (AND OTHER SENSORS) THEY USE....

• PPFD/PAR: Measures the Total Number of Photons within the PAR Region specific to plant growth
• Spectrum & Color Analysis: Measures your Light's Color Spectrum Output
• Light Flicker Frequency: Detect Unwanted Voltage Changes and assess Ballast & Bulb health

...PAR Region.... NO PBAR YET?.... OMG
..and seems to me the RH sensors is not acurate for VPD measures...but just my pov...
...actually seems to me on diy we can go with better and acurate sensors than the pulse kit...ehh Wilson...lol...

e function actived...

Paz y Amor...en 2021 aun mucho mas..

Saludos desde Tenerife - Islas Canarias

Click to expand...

i guess BK78 is the expert for pulse here.

can only guess a bit.
the description of the non pro sounds like theyre using a quite cheap i2c ambient light sensor, the description is acurate.
they do tell you very reliable if the is no light, little light or much light.
there arent many having a wide range covering our needs.
this one isnt that bad, see the ranges, while not linear at all.
maybe halfway ok too, wont get much 660nm. or anything below 450nm.
if you have the right tools at hand you may can build a filter for such a photodiode and make it a real par meter.
basically what all companys do, thats their secret sauce.
you dont get real raw datas from these i2c sensors just a lux value, else is internally processed.
and theyre not overly precise if you compare them.
theyre heavily dependend on their mounting position, hole in the cover etc too, ment to see if there is light, not especially how much.
basically the photdiode is cheap, but whats done around it makes the diference.

the spectrometer is a dif. story, way more complex sensor and algo for sure.

mine is a C7000 as no cheaper Sekonic is showing PPFD.

you can filter the light for a photodiode by using lee filters to get a flat response curve i saw it longer ago done by a few guys in a forum i dont remeber.
problem is that you can just work with the curve in the datasheet, see whats too high or low and try to adjust.
you also never really know whats compensated internally in the ambient light sensor.
the spectromaster will show if the filter works, but the rest is just a guess work, at least i havent figured it out better on the quick.

I was going to comment something along the lines of what Teknik said but the main point has already been expressed.
I think at first glance the Chinese have done a decent job of presenting their product, although their presentation and reality are likely very different.
I can't speak to its accuracy as I haven't tested it but what immediately caught my eye is their plagiarism of Apogee's graph, which can be found here:

Any brand that has to rely on stealing other competitor's data, copy, and graphics is a brand I'd stay away from. When something looks too good/cheap to be true, it usually is. As far as I know, measuring spectrum and photos is incredibly difficult to get right and accurate. Other brands like Hydrofram have already done quantum sensors replicas by calibrating lux meters but these results are rarely accurate and differ greatly from spectrum to spectrum and oftentimes these meters' accuracy worsens as light intensity increases.

For the price it may do an okay job, again, I don't want to seem too negative. But I think the Hopoo plays in the kiddie league whereas Apogee plays in the pro league, so to speak.

XL-500 BLE Spectroradiometer measures SPD, PPFD, Lux, CCT etc..
Brochure is here http://165.227.7.198/Resources/Release/Brochure_XL500_v1.1.0.pdf

It uses NSP32, an innovative digital nano spectrometer.

NSP32 was awarded Prism Award 2021, recently, in Smart Sensing category.

XL-500 is available at https://nanolambda.myshopify.com/
Contact: [email protected]

Bill Choi said:

XL-500 BLE Spectroradiometer measures SPD, PPFD, Lux, CCT etc..
Brochure is here http://165.227.7.198/Resources/Release/Brochure_XL500_v1.1.0.pdf

It uses NSP32, an innovative digital nano spectrometer.

NSP32 was awarded Prism Award 2021, recently, in Smart Sensing category.

2021 Prism Awards Honor Photonics Innovations

Earlier today during the Prism Awards, SPIE, the international society for optics and photonics, and Photonics Media recognized top optics and photon

www.photonics.com

XL-500 is available at https://nanolambda.myshopify.com/
Contact: [email protected]

Click to expand...

Welcome to the jungle Sr Bill Choi... my best wishes for you...I love your hardwares...but im too poor to try right now...maybe in the future i can get some money and try to use your Spectroradiometers... mucho Amor para ustedes...

A Tiny Spectroradiometer measures 340 nm to 1010 nm for Agriculture



Daejeon Korea, June , 2020 – nanoLambda, a leading spectral sensor company, announced a new version of XL-500, with an extended range from 340 nm to 1010 nm, measuring UV, Visual and NIR ranges all at the same time.

The tiny BLE spectroradiometer XL-500 measures and records light spectrum with absolute power values, not only SPD (W/m2/nm) but also PAR/PPFD (umol/m2/s/nm) and DLI for agriculture.

Also 5 different Lux (lm/m2) values for human centric lighting and CCT (K), CRI, and CIE values for color are measured.
nanoLambda packed all these functions with rechargeable battery and Bluetooth Low Energy (BLE) into an light weight and compact size (28 g @ 39 mm x 26 mm x 16 mm).

Users can set the measurement period and interval to measure the light spectrum continuously over several weeks at one battery charge.

Android apps and iOS apps are available for free, designed for lighting researches and industrial uses in plant, animal and human centric lighting fields.

“We hope this extended measurement range, UV range below 400 nm and Far Red 700 nm – 850 nm, would help the industry to figure out the more complete recipes of spectrum, monitor and control the effective spectral nutrient for different plants at different growth phases, to improve yield and quality,” said Bill Choi, CEO of nanoLambda, “Also, we are open to collaboration for further improvement or customization.”

XL-500 is available online for purchase, along with other spectral sensor products for various nondestructive or noninvasive sensing applications.....

About nanoLambda

nanoLambda is a leading spectral sensing company, making nondestructive agri-food sensing & noninvasive personal health monitoring with clinical accuracy, available anywhere.

nanoLambda's unique digital nano fusion technology enables ultra compact low cost optical spectrometer, affordable for mobile, wearable and any IoT devices.

Jun 23rd, 2020

...maybe i prefer your V1 or W1 and the Dev Board models... im prefer the diy way...more economic...and learn and fun a bit more...










sorry for my bad english write...






...curious imagen.... Ledtonic...MQ500...SQ500?...okok...no problemo bro...im more inclinated to PBAR than PAR...

...and more inclinated to the diy way than buy comercial things...but hey...there are too curious things on both sides...



...gracias por los like bros...este no lo borrare yo...

http://plantphenotyping.com/documents/Imaging_Sensors_brochure.pdf

Paz Y Amor...en 2021 aun mucho mas...

Saludos desde Tenerife - Islas Canarias

got time to run a few quick tests againts my apogee MQ-500 and id say the hopoo OHSP-350P has performed fairly well...
i have set the hopoo to sample 400nm to 700nm same as the apogee and the hoppo is set to constant sample same as the apogee.

the results are as follows -

looking very good, thanks for the test.