Date:         Fri, 14 May 1999 12:32:10 -0400
Reply-To:     David Beierl <synergx@IBM.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <synergx@IBM.NET>
Subject:      Re: Source for water tank level sensor
Comments: To: Malcolm Stebbins <Malcolm.Stebbins@MSVU.CA>
In-Reply-To:  <ADFE572747@msvu1.msvu.ca>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 13:11 5/14/99 -0300, you wrote:
>OK I just took the Ohm meter to my water level stick and when the
>float is at the top, I get no resistance (closed circuit), about 1 inch
>down I hear the click and the ohm meter reads about 250K as I
>move the float all the way down to within one inch of the bottom,
>then I get another click and the Ohm meter goes to 350K (nearly
>infinity - open circuit).  If that is of any help to anybody.

Yes, it is.  We are hot on the trail of this thing, and I understand the
circuitry in the LED panel.  If anyone else would care to ohm out their
sender and send me the results (specifying also how your lights behave) I
would appreciate it.  I will publish the results.


>I should add that my LEDs also do not read properly and I have
>taken the wand out of the van, I do not know if the wand or the
>LEDs are bad.   I'll try the Bentley 97.30 analysis.  Malcolm

Malcolm, don't bother -- 97.30 is for the older method with electrodes in
the tank.  But please do tell me what your lights actually do with the
float in various positions.  I have good hopes of developing a systematic fix.

david
David Beierl - dbeierl@ibm.net