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bkls1(at)earthlink.net Guest
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Posted: Tue May 16, 2006 4:18 pm Post subject: Fuel backflow valve?Fuel backflow valve? |
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Where can I find more info on the electronic Gem 205300 sensor for the top
of the header tank (spec's, where can it be purchased, price, etc.)?
Rupert, This link will take you to Gem's online cataloge, where you can
order the optic sensor you need. They are $54.00
http://www.gemssensors.com/SpecTemplateStandard.asp?nProductGroupID=307
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rexjan(at)bigpond.com Guest
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Posted: Tue May 16, 2006 5:27 pm Post subject: Fuel backflow valve?Fuel backflow valve? |
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Hi ! Rupert,
I see Colin has already advised that you can get =
the sensor and see all the info on it at www.gemssensors.com
As you will see there is some choices but I mentioned that mine was =
P/N205300. It is one of the ELS-900 series and made of Polyethersulfone =
as this resists fuel. The website will explain how it works. Basically =
it works on the principal of a LED emiting a light beam into a prism =
that then reflects it back into a photo transistor. However if the prism =
is immersed in a liquid [ Fuel ] the light is dispersed and the =
transistor does not get activated. The circuit to use this is very =
simple but if you are not conversant with electronics it is probably =
best to get some help or at least take great care to get it wired up =
right before any power is applied as it can easilly be blown instantly =
and it cost me $57 US all up.
The sensor can be bought in about three electrical variations and 3 =
different threads. There is also the different materials it is made =
from. The sensor will easilly feed a flashing LED. As I think I =
mentioned I have made up a beeper that feeds into my intercomm also.
=
=
=
Rex Shaw.
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