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Ohm Range for Fuel Gauge
Posted: Sun Jan 25, 2015 5:55 pm
by alber garage
Does anybody know the ohm range of the fuel tank sending unit? The gauge I have now, which is aftermarket, only registers full or empty with basically nothing in between. I need to get a new one that has the correct ohm range.
Re: Ohm Range for Fuel Gauge
Posted: Sun Jan 25, 2015 7:35 pm
by faux40
Funny you should ask... I can't swear by the accuracy, but these are from my gauge.
fuel_tank_sender_resistance.jpg
fuel_tank_sender_sm.jpeg
-- Here's the data --
Fuel Sender
| Full Down | 7.25" | 0.4 Ohms |
| 7.00" | 2.7 Ohms |
| 6.00" | 16.6 Ohms |
| 5.00" | 28.5 Ohms |
| 4.00" | 44.2 Ohms |
| 3.00" | 56.7 Ohms |
| 2.00" | 64.2 Ohms |
| 1.00" | 73.5 Ohms |
| Full Up | 0.00" | 86.6 Ohms |
9-1/4" deep
27-1/2" wide
18" long
Approximate tank volume
2.649739583 cubic feet
7.42 gallons/cubic-feet conversion
19.66106771 gallons
2.125520833 gallons/inch
I hope you can put this to good use!
John
Re: Ohm Range for Fuel Gauge
Posted: Sun Jan 25, 2015 7:43 pm
by moore_rb
Last year I measured the ohm ranges on both types of stock Patrol fuel senders - My findings are in this post:
http://www.60patrol.com/forum/viewtopic ... 921#p20921
I do not, however, have any fancy graphs to go along with them
Re: Ohm Range for Fuel Gauge
Posted: Sun Jan 25, 2015 8:49 pm
by Flaggoni
John, could you create a fancy graph which also includes fuel-burn-rate-change as the tank empties and loses weight?
Please use furlongs and firkins as units...thanks.
Mild Bill
Re: Ohm Range for Fuel Gauge
Posted: Sun Jan 25, 2015 9:39 pm
by faux40
Flaggoni wrote:John, could you create a fancy graph which also includes fuel-burn-rate-change as the tank empties and loses weight?
Please use furlongs and firkins as units...thanks.
Mild Bill
On it!
My brother always wanted to recalibrate his speedometer to read in furlongs per fortnight (aka FPF)...
Just for reference, here's a table:
MPH = FPF
10mph = 26,880 fpf
20mph = 53,760 fpf
30mph = 80,640 fpf
40mph = 107,520 fpf
50mph = 134,400 fpf
60mph = 161,280 fpf
70mph = 188,160 fpf
80mph = 215,040 fpf
Enjoy the useful information!
John
Re: Ohm Range for Fuel Gauge
Posted: Mon Jan 26, 2015 12:14 pm
by alber garage
faux40 wrote:Funny you should ask... I can't swear by the accuracy, but these are from my gauge.
-- Here's the data --
John
Unbelievable that you have this much data about the fuel gauge. I'm glad you saw my question because your response is extremely helpful. Thanks!