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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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How to tell if a UV lamp is working?
How can one safely tell if a UV lamp is working? This is a UV tube in a pond filter system which lives in a lightproof (well, UV proof I suppose) tube with the water going to the filter flowing past it. It has standard fluorescent gear, a choke and a starter. -- Chris Green |
#2
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How to tell if a UV lamp is working?
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#3
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How to tell if a UV lamp is working?
On 08 Oct 2006 09:12:47 GMT, wrote:
How can one safely tell if a UV lamp is working? Is it interlocked not to come on if the box is open? Defeat the interlock, probably just a switch on the cover then in a dark area switch on and see if a sheet of ordinary white photo copier type paper fluoresces. You may also see a dim blue glow. Obviously don't stare at the tube or spend any longer than required exposed but a second or three isn't going to hurt you. -- Cheers Dave. pam is missing e-mail |
#5
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How to tell if a UV lamp is working?
"Andrew Gabriel" wrote in message ... I hope the unit has interlocks to prevent you looking at the tube operating, which is dangerous. However, if you are tempted to try defeating the interlocks, put a sheet of glass (not plastic) between you and the lamp, stand well back, and only operate the lamp for a few seconds. There is normally a dim visible glow from the clear tubes. I would have thought most plastics would block UV more than glass. Most UVB and almost all UVC are blocked by virtually any material apart from quartz. |
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How to tell if a UV lamp is working?
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#7
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How to tell if a UV lamp is working?
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#8
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How to tell if a UV lamp is working?
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#9
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How to tell if a UV lamp is working?
raden wrote: White material especially after having been washed should fluoresce when exposed to the light It really needs to phosphoresce though (e.g. zinc sulphide), not fluoresce (e.g. washing powders). Fluoresecence is immediate, phosphorescence has a time delay. If you could see something in the act of fluorescing you'd probably be able to see the blue glow. Phosphorescence allows you to open it, close it, put the power back on, open it up and then see afterwards if it had illuminated. |
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