[JT118]

Many thanks, I shall sketch something out. I am away from home at the moment, so it will be a few days.

[Mikko]

Hi Mark,
I have installed UVM30A sensors inside 50mm PVC tube. Tubecab (?) has 15x15mm hole and quartz class on top, see picture of one spare cab. I bought those quartz lenses from ebay (china) and they were about 5$ each. PVC tube is filled with small silica gel bags to keep it dry. I haven't seen any temperature problems so far, but that might be due to latitude (60N). Several years ago I had HobbyBoards UV sensors but they were totally crap. UV readings started to rise when temperature went below +15°C even in total darkness.

Here is the mast, red arrow is pointing UV sensors, first one is horizontal and behind it is the tilted one. Now it's clear that tilting does not help, it's giving way too high reading.

[hornychz]

Hi,

I've prepared the similar device with UVM30A and 40 mm HT PVC tube. And bought JGS1 half balls hemispheres (it was a little expensive for me - 2 pieces USD 130 and our VAT). JGS1 has really transmission between 92-95%. This sensor is only in test mode now, not for CumulusMX yet, but its applicability looks very very well ...





Regards

[JT118]

Possible enclosures available in UK.


Https://www.ledhut.co.uk/solar-power-mul...light.html?

[uncle_bob]

Https://www.ledhut.co.uk/solar-power-mul...light.html?

Seems familiar eh Werk?

[JT118]

Https://www.ledhut.co.uk/solar-power-mul...light.html?

Seems familiar eh Werk?

Identical!

[hornychz]

Hi,

the last I bought them in China:

Solar Powered Garden Lamp

Now it costs USD 4.99, shipping is free.

Regards

[AllyCat]

Hi,

I guess you're mainly concerned with it as an "enclosure", but are the PV panels in the LEDHUT and Bangood versions truly "identical"? Certainly they both appear to be Crystalline Silicon, which is superior to the cheaper Amorphous Silicon panels.

But the LEDHUT PV panel has four "sections" (about 0.5 volt per section, in series) and indeed the description states that it contains a 1.2 volt (NiMH) AA battery. This is common with low cost garden lights, which use a step-up voltage converter to drive the (3 volt) LED(s).

However, the Bangood version appears to have 8 sections (but perhaps it's just just two groups of 4 in parallel) ? Normally, 8 sections would indicate a "4 volt" panel charging a (far superior) LiFePO4 AA battery (3.2 volts). That would make it an excellent-valued product.

I'm particularly interested because the Solar Sensor that I'm developing uses (only) one AA LiFePO4 battery (not easy to obtain) to power everything (i.e. it uses only a nominal 3.3 volts supply).

EDIT: Looking very closely at the Banggod photo which shows some of the instructions, the text says that the battery should be replaced by a 1.2 volt NiMH type.

Cheers, Alan.

[hornychz]

Hi,

I guess you're mainly concerned with it as an "enclosure", but are the PV panels in the LEDHUT and Bangood versions truly "identical"? Certainly they both appear to be Crystalline Silicon, which is superior to the cheaper Amorphous Silicon panels.

Cheers, Alan.

Hi Alan,

Yes, you are right, every time I've used only that enclosure, nothing else ... Solar panels have always bought separately. Frankly I did not think I could get lights with panels that could be used.

Cheers,

[ctnxs1]

Hi,

I've prepared the similar device with UVM30A and 40 mm HT PVC tube. And bought JGS1 half balls hemispheres (it was a little expensive for me - 2 pieces USD 130 and our VAT). JGS1 has really transmission between 92-95%. This sensor is only in test mode now, not for CumulusMX yet, but its applicability looks very very well ...

Zdenek,

What is the benefit of a JGS1 half ball hemispheres compared to a flat piece of JGS1? Do you get improved cosine response? Are you also using some kind of diffuser between the JGS1 and the UV sensor?