On Sun, Nov 14, 2010 at 08:12:54PM -0800, Lew Hodgett wrote:
>
> The problem is reliable liquid level detection which you haven't
> addressed.
Lew, that's an interesting statement. What's unreliable about a
well-designed float (e.g., http://x.co/KGoQ), or for that matter, the
cycling pump that we were talking about? These seem like no-brainers.
It's not like you're working with high-viscosity materials here; it's
pretty well limited to water with maybe some oil and fuel mixed in.
What's the catch?
> Conductivity, Capacitance, ultrasonic, pulse radar and hydrostatic
> technologies that are either not reliable or economically affordable.
OK, I can see conductivity as being of marginal use if the contacts get
coated with oil; somewhat of a ditto for capacitance, although for
slightly different reasons. What's the failure mode for ultrasonic or
pulse radar? I can't imagine radar-absorbent foam being a common
component of bilge water. :)
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