how about ultrasonic distanc measurement between top of the tank and =
water level?
how about water pressure measurement on the bottom of the tank?
tino

*************************************************************************=
*****************************

>-----Original Message-----
>From: John Waters [mailto:john_fm_waters@HOTMAIL.COM]
>Sent: Wednesday, June 09, 2004 5:35 AM
>To: PICLIST@MITVMA.MIT.EDU
>Subject: [EE]: water level detection, how?
>
>Hi All,
>
>I have a tank with a submersible pump inside, I want to stop the pump =
from
>running dry when the water level is too low, what sort of sensor could =
I
>use? I'm thinking of using a float with a magnet attached, the magnetic
>field will trigger a relay to turn off the power, does anyone get
>experience
>in building this kind of thing and would like to share the experience =
with
>me?
>
>Thanks in advance!
>
>John
>
>_________________________________________________________________
>Tired of spam? Get advanced junk mail protection with MSN Premium
>http://join.msn.com/?pgmarket=3Den-
>ca&page=3Dbyoa/prem&xAPID=3D1994&DI=3D1034&SU=3Dhttp://hotmail.com/enca&=
HL=3DMarket_M
>SNIS_Taglines
>
>--
>http://www.piclist.com#nomail Going offline? Don't AutoReply us!
>email listserv@mitvma.mit.edu with SET PICList DIGEST in the body

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu