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		kenryan
 
 
  Joined: 20 Oct 2009 Posts: 429
 
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		Bob McC
 
 
  Joined: 09 Jan 2006 Posts: 258 Location: Toronto, ON
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				 Posted: Mon Feb 06, 2017 8:49 am    Post subject: fluid level sensor | 
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				Looking up the chemical resistance of the plastic from which this sensor is manufactured it appears to have excellent resistance to all forms of gasoline, benzine, astm fuels and astm oils as well as ethylene glycol and brake fluid.. So yes, it would appear suitable for use in a header tank. However a query to the manufacturer requesting their opinion would yield the safest answer. Tell them the application is for level in a fuel storage tank NOT an aircraft header tank.😄   
 Bob McC   [quote]    --------
 
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  _________________ Bob McC
 
Falco #908
 
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		nuckolls.bob(at)aeroelect Guest
 
 
 
 
 
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				 Posted: Mon Feb 06, 2017 11:25 am    Post subject: fluid level sensor | 
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				At 09:19 AM 2/6/2017, you wrote:
   	  | Quote: | 	 		  | Can you guys tell me if this (153064) would be an appropriate sensor for my 5 gallon header tank to turn on an LED if the tank is not full? | 	  
    Polysulfone enclosure material for this device is
    very compatible with motor fuels.
 
    I proposed using this sensor as a component of
    an upgrade to a series of low liquid level sensors
    I worked on for Electro-Mech WAaaayyy back when . . .
 
    We crafted a series of optical liquid level sensors
    that were widely used on Beech products. It looks
    like they still make some version of them . . .
 
   http://tinyurl.com/hgs24nt
 
    When the Premier was still under development, I
    became aware of dismal failure rate in these
    devices. Given the simplicity of the product,
    it was rather astounding.  Dean Matson and I
    were co-developers of the original concept and
    we were working together at Beech's Targets
    division when the news came to us.
 
    To make a long story short, this program proved
    to be a fine example of what can happen when a
    small, tightly coupled design, development and
    manufacturing operation gets bought out and
    'upgraded' with all the albatrosses and millstones
    of the parent corporation after a buyout.
 
    I suggested that the fast-turn solution for the
    failures was to modify a GEM sensor to fit into
    the stock Electro-Mech enclosure. Had this
    problem surfaced in the same regulatory and
    business environment I enjoyed in 1985, we could
    have put the fix into production in a couple
    months at most. But in 2004 . . . well . . .
 
    I was pretty busy fighting other fires then and
    I don't know what they wound up doing to fix
    the EM product . . . but the short answer to your
    question is that the GEM sensor is well suited to
    the application you are proposing.
 
    For those interested in the history of this technology
    in aircraft, I've posted a few snapshots of my own
    experience with it at  http://tinyurl.com/h586hp9 
 
  
  
    Bob . . .
 
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		hilltopkid
 
 
  Joined: 10 Jul 2016 Posts: 10 Location: Richmond, VA
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				 Posted: Mon Feb 06, 2017 2:55 pm    Post subject: fluid level sensor | 
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				Ken,
 
 For what it's worth, here is the information on the two level switches we bought for our Subaru back in 2009. I just dialed the phone number for e-Components International and got voice mail which appeared to be the same person, Tammy, which we dealt with back then.
 Manufacturer: Fozmula Limited Griffiths House, Hermes Close, Tachbrook Park, Warwick, CV34 6UF, United Kingdom
 Tel: +44 (0) 1926 466700   |   Fax: +44 (0) 1926 450473   | 
 http://www.fozmula.com/
 
 Tammy was the local rep we dealt with at:
 e-Components International Inc.
 307 Spring Hill Road
 Lancaster, VA 22503
 United States
 ph: 804-462-5679
 fax: 804-462-0556
 sales(at)e-components.net (sales(at)e-components.net)
 
 We bought:
 S85/03 1/4" NPTF capacitive Fozmula switch for engine coolant
 S86/03 Capacitive Fozmula switch 1/4" switch for gasoline
 
 Dee
 
 DeWitt (Dee) WhittingtonRichmond, VA
 804-677-4849 iPhone
 804-358-4333 Home
  
 On Mon, Feb 6, 2017 at 10:19 AM, Ken Ryan <keninalaska(at)gmail.com (keninalaska(at)gmail.com)> wrote:
 
 
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  _________________ DeWitt (Dee) Whittington
 
Richmond, VA | 
			 
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		jim(at)PoogieBearRanch.co Guest
 
 
 
 
 
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				 Posted: Mon Feb 06, 2017 4:51 pm    Post subject: fluid level sensor | 
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				One other potential approach for your consideration...  Belite
 Electronics makes lightweight, low-cost instrumentation for ultralight
 and experimental aircraft. They have developed a line of fuel sensors
 and gauges that are pretty cool. You can go to
 http://www.beliteaircraft.com, then go to their "electronics" page to
 see all the gauges.
 
 They sell capacitance fuel probes that are much lighter and less
 expensive than the "commercial" ones, and will custom make them to your
 length if desired. And they make several different single- and dual-tank
 gauges (including the "Radiant" gauges that were featured in Kitplanes
 and AvWeb feature articles).
 
 But the one I really like is the "Low Profile Fuel Probe," which is a
 MEMS-based "pressure-reading" transducer that effectively measures the
 mass of the fuel in the tank. It can be purchased with a "fuel computer"
 that calibrates and translates the fuel probe's output into 0.0 volts
 (empty) to 5.0 volts (full), with intermediate calibration points at
 1/4, 1/2, and 3/4 levels. It can also be purchased without the fuel
 computer, for use with the "Radiant" fuel gauges that already have the
 calibration/translation feature built in.
 
 I plan to use the low-profile fuel probe (without computer - $100) and
 the Radiant dual-tank gauge ($300) as the primary fuel level indicator
 for the Bearhawk Patrol I'm building. I'll have sight glass tubes as a
 backup, but they are harder to see from the pilot's seat. The two probes
 and the gauge together will add only a few ounces to the empty weight -
 probably about as much as the wiring from panel to wing tanks!
 
 But that solution would probably be major overkill for your intended
 purpose of monitoring the fuel level in the header tank. For that, I
 would use the Low Profile Fuel Probe (with fuel computer - $200) and the
 single-display Fuel Gauge ($80). 
 
 Some of you are probably be creative (and skilled) enough to forgo the
 fuel computer or even the gauge, creating your own circuit to measure
 the sensor output and decide when to turn on a "warning light" when the
 level drops below your desired level. But me – I'm too much of a
 "newb" to even attempt such a thing, so I'll stick to a "professionally
 designed" system.
 
 Jim Parker
 
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		kenryan
 
 
  Joined: 20 Oct 2009 Posts: 429
 
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				 Posted: Tue Feb 07, 2017 1:03 pm    Post subject: fluid level sensor | 
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				Thanks for the responses. I'll probably use the Gems but it's good to know there are other options.
 
 On Mon, Feb 6, 2017 at 3:48 PM,  <jim(at)poogiebearranch.com (jim(at)poogiebearranch.com)> wrote:
  	  | Quote: | 	 		  --> AeroElectric-List message posted by: <jim(at)poogiebearranch.com (jim(at)poogiebearranch.com)>
  
  One other potential approach for your consideration...  Belite
  Electronics makes lightweight, low-cost instrumentation for ultralight
  and experimental aircraft. They have developed a line of fuel sensors
  and gauges that are pretty cool. You can go to
  http://www.beliteaircraft.com, then go to their "electronics" page to
  see all the gauges.
  
  They sell capacitance fuel probes that are much lighter and less
  expensive than the "commercial" ones, and will custom make them to your
  length if desired. And they make several different single- and dual-tank
  gauges (including the "Radiant" gauges that were featured in Kitplanes
  and AvWeb feature articles).
  
  But the one I really like is the "Low Profile Fuel Probe," which is a
  MEMS-based "pressure-reading" transducer that effectively measures the
  mass of the fuel in the tank. It can be purchased with a "fuel computer"
  that calibrates and translates the fuel probe's output into 0.0 volts
  (empty) to 5.0 volts (full), with intermediate calibration points at
  1/4, 1/2, and 3/4 levels. It can also be purchased without the fuel
  computer, for use with the "Radiant" fuel gauges that already have the
  calibration/translation feature built in.
  
  I plan to use the low-profile fuel probe (without computer - $100) and
  the Radiant dual-tank gauge ($300) as the primary fuel level indicator
  for the Bearhawk Patrol I'm building. I'll have sight glass tubes as a
  backup, but they are harder to see from the pilot's seat. The two probes
  and the gauge together will add only a few ounces to the empty weight -
  probably about as much as the wiring from panel to wing tanks!
  
  But that solution would probably be major overkill for your intended
  purpose of monitoring the fuel level in the header tank. For that, I
  would use the Low Profile Fuel Probe (with fuel computer - $200) and the
  single-display Fuel Gauge ($80).
  
  Some of you are probably be creative (and skilled) enough to forgo the
  fuel computer or even the gauge, creating your own circuit to measure
  the sensor output and decide when to turn on a "warning light" when the
  level drops below your desired level. But me – I'm too much of a
  "newb" to even attempt such a thing, so I'll stick to a "professionally
  designed" system.
  
  Jim Parker
  
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		ceengland7(at)gmail.com Guest
 
 
 
 
 
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				 Posted: Tue Feb 07, 2017 2:37 pm    Post subject: fluid level sensor | 
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				Don't forget to check ebay before       purchasing; there are often much better deals there on the Gems       type sensors.
        
        Charlie
        
        On 2/7/2017 3:00 PM, Ken Ryan wrote:
      
       	  | Quote: | 	 		         Thanks for the responses. I'll probably use the         Gems but it's good to know there are other options.
        
          On Mon, Feb 6, 2017 at 3:48 PM, <jim(at)poogiebearranch.com (jim(at)poogiebearranch.com)>           wrote:
             	  | Quote: | 	 		  -->             AeroElectric-List message posted by: <jim(at)poogiebearranch.com (jim(at)poogiebearranch.com)>
              
              One other potential approach for your consideration...              Belite
              Electronics makes lightweight, low-cost instrumentation for             ultralight
              and experimental aircraft. They have developed a line of             fuel sensors
              and gauges that are pretty cool. You can go to
              http://www.beliteaircraft.com, then go             to their "electronics" page to
              see all the gauges.
              
              They sell capacitance fuel probes that are much lighter and             less
              expensive than the "commercial" ones, and will custom make             them to your
              length if desired. And they make several different single-             and dual-tank
              gauges (including the "Radiant" gauges that were featured in             Kitplanes
              and AvWeb feature articles).
              
              But the one I really like is the "Low Profile Fuel Probe,"             which is a
              MEMS-based "pressure-reading" transducer that effectively             measures the
              mass of the fuel in the tank. It can be purchased with a             "fuel computer"
              that calibrates and translates the fuel probe's output into             0.0 volts
              (empty) to 5.0 volts (full), with intermediate calibration             points at
              1/4, 1/2, and 3/4 levels. It can also be purchased without             the fuel
              computer, for use with the "Radiant" fuel gauges that             already have the
              calibration/translation feature built in.
              
              I plan to use the low-profile fuel probe (without computer -             $100) and
              the Radiant dual-tank gauge ($300) as the primary fuel level             indicator
              for the Bearhawk Patrol I'm building. I'll have sight glass             tubes as a
              backup, but they are harder to see from the pilot's seat.             The two probes
              and the gauge together will add only a few ounces to the             empty weight -
              probably about as much as the wiring from panel to wing             tanks!
              
              But that solution would probably be major overkill for your             intended
              purpose of monitoring the fuel level in the header tank. For             that, I
              would use the Low Profile Fuel Probe (with fuel computer -             $200) and the
              single-display Fuel Gauge ($80).
              
              Some of you are probably be creative (and skilled) enough to             forgo the
              fuel computer or even the gauge, creating your own circuit             to measure
              the sensor output and decide when to turn on a "warning             light" when the
              level drops below your desired level. But me – I'm too much             of a
              "newb" to even attempt such a thing, so I'll stick to a             "professionally
              designed" system.
              
              Jim Parker
             | 	           
        
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		rick(at)beebe.org Guest
 
 
 
 
 
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				 Posted: Wed Feb 08, 2017 9:02 pm    Post subject: fluid level sensor | 
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				FWIW, I have the Belite RADIANT dual fuel gauge in my GlaStar and I love 
 it. I'm using it with the capacitance senders that came with the plane 
 and it works great. The gauge is very readable, very light, and was easy 
 to install and configure.
 
 --Rick
 
 On 2/6/2017 7:48 PM, jim(at)PoogieBearRanch.com wrote:
  	  | Quote: | 	 		   
 
  One other potential approach for your consideration...  Belite
  Electronics makes lightweight, low-cost instrumentation for ultralight
  and experimental aircraft. They have developed a line of fuel sensors
  and gauges that are pretty cool. You can go to
  http://www.beliteaircraft.com, then go to their "electronics" page to
  see all the gauges.
  | 	 
 
 
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