I have a 5 gallon water tank...the kind that spring water comes in for your=
 office water coolers. I will be filling it with various types of beer (som=
e of you may remember my project) and I wish to add a level sensor so that =
the control panel's LCD will show the user the % full that the tank is. I h=
ave researched it a bit and came to three choices:

line of IR reciever and detector pairs going up the side, each will get a s=
lightly different reading when fluid is in the tank. The con of this is tha=
t the % will be very limited in accuracy and different shades of beer will =
require different trigger values.

liquid level transducer (http://chattanooga.net/~cdp/level/level.htm) where=
 i'd have to measure a frequency.=20

pressure sensor inside the bottom of the tank. the more water, the more pre=
ssure. This seems the easiest way so.

Industrial fluid level sensors are too expensive.

So does anybody have any experience or advice they can offer in using a pre=
ssure sensor as a fluid level detector? I just want to hear any experiences=
, good or bad. Thank you

~Rob

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