Resistive fuel sender

APACHE 56 · #1 02-05-2012, 03:55 PM

I have the Van supplied resistive fuel senders. I also have them hooked to an EI fuel gage. To calibrate the fuel gage one must know the relationship between the level of resistance and fuel level. That is: as resistance increases fuel quanntity increases or vice versa. Does anyone recall the relationship?

I have lost the sheet that came with the senders and it's been a couple of years since I did the check and can't recall the detail.

thanks,
Don

sbarger24 · #2 02-05-2012, 04:06 PM

I know just where mine is, as I spent the day cleaning the hanager, and can scan it to you tomorrow evening if someone doesn't beat me to it.

tomhanaway · #3 02-23-2012, 03:38 AM

Could you please send me a copy too.

I just calibrated my left tank and only got resistance changes (and therefore, indication on the gauge) up through 17 gallons .

Since the plane isn't painted, I'm going to check the installation bends to see if I can get a little more movement of the float bowl between empty and full.

Thanks,
Tom Hanaway
RV-10
Boynton Beach, FL

Walt · #4 02-23-2012, 04:43 AM

From Van's website:

Float type sending units and replacement gaskets are available for Stewart Warner, Isspro, and Van's fuel gauges. These units are resistive and operate between approximately 20-240 ohms. When the tanks are full the resistance is approximately 20 ohms, when empty the resistance is approximately 240 ohms

aerhed · #5 02-23-2012, 10:22 AM

Nobody mentioned this yet, but your float will top out before the tank is full due to rectangular tanks and dihedral.