On Thu, 23 Sep 2004 15:43:40 +0100, "AK" wrote:

I have managed to borrow an infrared thermometer..........I can't stop
playing with it - Although I can't think of a single use for one apart from
balancing radiators!!!

I meant to add that I find that it helps to get consistent readings with
the IR thermometer if I stick a small square of black PVC tape on all
the flow and return pipes, just below the valves, as a target for the IR
reading. Without that, the reading depends somewhat on the state of the
pipe surface and whether it is painted or not, and varies according to
which bit of pipe you point the meter at. I'm not sure that black is any
better than any other colour in practice, although in theory black is
the ideal colour. The main thing is to get a consistent emissivity
surface to take readings from.

Phil
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