Inside a UVC water steriliser module

It os a T5 tube (five eighths of an inch diameter). I was surprised at the cathode heater resistance differences. Perhaps I now need to measure a lot more tubes.

Big Clive

It's a small tank with low water volume movement, so the 6W tube will be more than enough. It may not even run all the time.

Big Clive

I think this may have been mentioned but I suspect the bulb is a T5 ish part. I measured the heater in a very similar looking part in my eprom eraser. 3.1 ohm cold. These bulbs were popular in battery operated camping lanterns. With phosphor of course.

Jim

Note from one working in said industry: The UVC used to purify water would never be allowed to shine outside the treatment vessel, let alone outside the building. That's probably just residual glare of high-pressure sodium lamps through a reflector or window. BTW we (no names!) only use UVC sterilisation systems when its absolutely necessary; as can be understood they're very expensive to run and maintain. There are certain parasites which are not killed by chlorination alone; they can only be removed from the water by filtration or UVC treatment.

Stephen Eyles

@Paul a good way to post links (here) and other places which don't accept them is to remove the "https://", then replace dots and / with other characters ( * and 7 maybe) and try again. If it's one of those super-long-drawn-out-lots-of-extra-characters-links then put it through something like Bitly dot com before doing the same. Most ppl with a modicum of internet knowledge could piece them back to make a working link!

Stephen Eyles

I've tried a few. A recent one was the DSO nano by Seeed.

Big Clive

This question is unrelated to this video but i've been meaning to ask, what's the tiny oscilloscope you've shown on your channel a couple times? I can't for the life of me remember which video(s) i saw it in and searching youtube for "oscilloscope bigclivedotcom" brings up the electric buttplug video. Thanks!

Myriad

I'll check those out.

Big Clive

The tube is optimised for maximum profit through vendor lock-in

Gordo

UVC tubes give off a light blue colour rather than purple...

I was also thinking about this...does this "virgin" tube actually work? I mean, sure it will shine a light but is there enough to sterilize a tank?

6 Watts seems a little low on power, we have our own water supply and UV steriliser, the bulb is about 18" long with also T5 diameter but rated 45 Watts... 4 pins one end, Heater resistance, just over 1.2 ohms..

There is so much Chlorine in London tap water you can smell it. Also not good for refilling a tropical fish tank.

Jeremy Travis

Wonder if that tube just has a different cold resistance? Seems weird that they would even make a special tube. It would be cool to see if the heaters get crazy hot in a regular lamp!

Interesting stuff, nice!

Michael Thompson

There's a water tower and purification facility about 400m up the road from here. At night there's a purple glow through the skylights on the roof.

Wim

I think I spoke too soon - try Googling for "TUV TL Mini" (Phillips UVC lamps) also search eBay UK for "philips t5 tuv" or "Philips Pond UV lamp"

Paul Kemp

I think I have found the UV tube - tried posting here, but did not seem to work (because of links?). I have posted a comment on the youtube video that seems to have worked.

Paul Kemp

just a query.... would it not be low voltage as a safety against poss water ingress should the sleeve leak, i would have thought there could possibly be more safety systems in place but I'm genuinely curious

Julian Butler