an easy fix? (blind) humidifier filling

[Ed Sutton]

Hey, Mark! 
Here's an idea for you:
Attach a length of aquarium tubing in the tank such that it ends at the
desired water level.
While filling the tank, the student blows through the aquarium tubing. 
When the air starts to bubble in the water, the student knows the tank is
filled.   A little wacky, but I believe it would work, and I know how
important it is in Brandon to keep the humidifiers working!
Ed Sutton


> [Original Message]
> From: Mark Cramer <Cramer@BrandonU.CA>
> To: CAUT <caut@ptg.org>
> Date: 5/7/2004 2:01:32 PM
> Subject: an easy fix? (blind) humidifier filling
>
> It occurs to me there may be a simple(r) solution to "blind" filling of
> humidifiers in grands with bottom covers, but I honestly need some
feedback
> from the tinkerers among us to know if it's worth pursueing:
>
> Note that you can often hear the water "trickling" into the tank until the
> level rises above the end of the hose.
>
> Stop the flow of water before the hose-level is reached, and the
"trickling"
> stops.
>
> While pouring until the hose is almost submurged, then stopping, will
cause
> a "gurgling" sound, as air enters.
>
> Filling beyond this point is silent (until the tanks overflows) however,
> when you lower the pitcher, the water-flow will reverse.
>
> So it seems several "audible" indicators of water-level already exist,
> without a need to "manually" check the tank.
>
> One difficulty however seems to be "hearing" the trickling sound, and
> noticing when it stops. The sound is often very faint.
>
> I'm wondering if some really, really simple fixture could be added to the
> end of the hose to make the "trickling" sound LOUDER, more distinct?
>
> If so, our watering assistants could merely add water to EVERY piano, by
> schedule, rather than demand.
>
> They could add water until the "trickling" sound stops.
>
> If the tanks were still full, there would be no "trickling" sound, and air
> would "gurgle" back when they stopped pouring.
>
> If over-filled, the pitcher could be lowered to siphon excess water back,
> until the "gurgling" sound indicated capacity.
>
> One point Becky Baldwin of Dampp-chaser mentions, is the need for the
angled
> slice at the end of the water hose, and that this be set precisely for
> correct water-level. (sorry, I forget)
>
> Anyhow, wouldn't it be nice to face the return of students in fall with
this
> deceptively simple problem solved?
>
> thanks in advance for your input,
> Mark Cramer,
> Brandon University
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