Re: Ruby - How about a sight glass?

[Chris Wolcott]

In theory, PURE water will not conduct electricity.  It is the 
impurities that are normally found in water that do.  Being that we use 
distilled water, but put it in a copper vessel, conductivity may not be 
a constant.  It is worth the effort to do an experiment though.  That 
would be the easiest to implement.  I'm not sure how a moisture detector 
works, but another possible way is a simple float switch.  While water 
is in the boiler, the float lifts off the contacts and the circuit is 
open.  When the level drops, so does the float and Voilia!  The circuit 
is completed.  However it is done it must be able to handle quite a bit 
of heat.

Trent Dowler wrote:

> It was suggested that an electronic sight glass like the one found on the new
> Rishon locomotive be used on the Ruby.

SNIP

> Sounds too simple. Anyone with ideas out there?

The best ideas often are!