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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: Fw: [LML] Re: Fw: light-sensing fuel level switch
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Date: Wed, 17 Aug 2005 10:59:38 -0400
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Posted for "Mark R Steitle" <mark.steitle@austin.utexas.edu>:

  Terry,
  I used two of the GEMS ELS-1100 sensors in my ES, one in each tank.
  They are located so as to activate either a "Left" or "Right" LED on the
  panel when there is 6 gallons of fuel left in the respective tank.
  Basically, they provide a 30 minute fuel warning.  Nice thing is they
  are totally redundant from the EI fuel probes.  They were fairly simple
  to install.  You will need a 5v supply, but that was accomplished with a
  solid state voltage regulator.
  
  See http://www.gems-sensors.co.uk/Level/p37.pdf
  
  Mark Steitle