Fuel level sensor wiring

[hcccs]

I am about to connect the fuel level sensors to the SV-EMS-220 but I'm not 100% sure how. Trim and flap sensors feed EMS 0-5 Volts depending on position. What about fuel level sensors. Do I connect the single wires from the tank sensors to two general purpose inputs on the 37-pin connector? If that is so then EMS feeds those inputs with 5V and the voltage is drained depending on the position of the potentiometer, i.e. fuel level. Have I got that right?

 

[Dynon]

If we're talking about a D10, D120, or D180, the resistive fuel level sensors go to the dedicated fuel L and fuel R inputs (pins 20 and 21). They don't need an external voltage input (the EMS drives them).

 

[hcccs]

I forgot to mention, I'm talking about Skyview. Does the same apply?

 

[jakej]

Yes !

Jake J

 

[Dynon]

With SkyView, you can actually use any of the A, B, or C type GP inputs (any of them, basically).

 

[hcccs]

Yes ! 

Jake J

Thanks Jake!

 

[PabloArgentina]

Hi, I want to install the D10 in my C182 but I want to keep the original 24 volts resistive fuel indicators. Is possible to splice the wires (pin 20-21) to the wire who cames from the fuel level sensor to the original fuel indicator?

 

[Dynon]

Nope. Splicing them into the original sensors will change their readings. Also note that if you're in the US and this is a type-certificated aircraft, there's no FAA-approved way to install our products in them. This may not be the case for foreign aircraft. Canadian owner-maintained category aircraft have some additional flexibility, I realize.

 

[PabloArgentina]

Yes, in my country we can install it as a aditional information.
What do you seggest to that case?

 

[PabloArgentina]

what I can do?

 

[Dynon]

Even though it's possibly from a legal standpoint in your instance, you still have the issue that hooking up multiple sensors will probably change the indication on your analog gauges in a way that will make them less useful. Also, even if you were able to get it working when both are hooked up in parallel, a failure of either indicator will likely cause the other indication to mis-read. so intead of adding redundancy, you've actually increased the chance that you'll have a misleading indication. In short, we can't recommend a parallel connection to two fuel level indicators from a single fuel level sensor.

 

[PabloArgentina]

Ok thanks!