[R-390] Panel meters
rbethman
rbethman at comcast.net
Thu Apr 21 14:48:49 EDT 2011
Phooey! I don't find any blasphemy in this at all!
Those that don't know, the meter faces ARE Radium 226 "painted".
*IF* you don't have any "flecks" loose in your meters, you will not have
a problem - UNLESS you manage to dig into the meter and scrape or
somehow dislodge the "paint".
I just looked at my meters, and I see that the *flat* style LED would
fit nicely in the space between the dial face and the glass.
The only thing is to build the simple circuit to provide the piddling
voltage and current for them.
Plenty of circuits are out there for LEDs.
Bob - N0DGN
On 4/21/2011 12:21 PM, Tisha Hayes wrote:
> This may be blasphemous but I always wanted to change the panel meters from
> white on black to black on white with some additional scaling.
>
> We have the JPEG and TIFF renderings of the panel meter faceplates but they
> are very grainy looking
>
> I figured it I went with black on white I could laser print it in vellum
> paper and glue it to a translucent bezel. Remove the old, radioactive bezels
> and add backlighting to the meters.
>
> Before someone gets all excited about me handling radioactive materials I
> used to be licensed to handle radioactive sources (Cobalt 60, Radium 226,
> Cesium 137, Americium 241, Polonium 210), including those that posed a
> threat of airborne contamination so I know the right steps, have the proper
> clothing and respiratory protection and have the equipment to monitor for
> external contamination (alpha, beta,gamma).
>
> Definitely not something I would want to (or legally could) do for someone
> else. The freaking NRC would be all over me if I went into the home business
> of retrofitting radioactive panel meters or dial knobs.
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