GRAFFRIG FUEL LEVEL SENDERS
No moving parts, nothing to break or wear out
Prevents pointer bounce
Can be cut and calibrated in the field (Both low and high level screw adjustments.)
Available in 12 or 24 volts
Detect water in fuel
Other ohm resistances available
Requires 12 volts
Standard SAE 5 bolt pattern
These senders provide an accurate, continuous readout of fuel or water levels even in a moving boat. Consisting of a single in-tank probe and an amplifier, its innovative technology renders the traditional float arm assembly obsolete. The probe itself is constructed of concentric tubing (a small brass or aluminum tube inside a larger aluminum tube) that’s placed vertically in the tank. Acting as a capacitor, the inner tube reads how much air is in the tube and changes in value as the fuel level rises or falls. As the fuel level is determined by only the amount of fuel inside the tube, the fuel level reading is unaffected by the boats side to side motion or forward movement. The amplifier and probe is easily installed in the standard float arm assembly mounting plate.
The biggest advantage to this new line of senders is the absence of moving parts. As it has no moving parts, the unit is impervious to mechanical failure and it greatly reduces needle bounce on the gauge. The probe comes in 12 inch increments and can be cut into any length down to the net lower increment. The probe can be built to fit tanks from 4" to 120" deep and is available for standard as well as custom tank installations, requires 12 volts to sender.



Gaffrig Fuel fuel level sender
(240-33 ohms)
Fuel level senders (240-33 ohms) 0-12" GSFLC12 $59
13-24" GSFCL24 $69


http://www.vikingmarina.com/Gaffrig_New/cat_senders.php

 

OOPs
I've had one of these in my Boat for about 15 yrs, never had a problem, ALWAYS a steady readout.

 

So how will It work in my truck?

 

How does it mount? Looks like a good deal, wonder why OEM's don't use it?

 

It replaces the original sender. You need to order the unit based on your fuel tank depth. Lets say your tank is 10" deep, you would need the 12" unit. When you install the unit you need to cut the tube (Probe) to the proper length. You then adjust it empty (zeroing), then full. The sending has two adjustment pots.
Not only is it easier than adjusting floats, it is much steadier.

 

It uses the SAE 5 bolt mount pattern. 10/12-32 Brass?

 

I wish I'd known about that before I ordered my new one. This one sounds as steady as a rock. Oh well.

 

It took me about 15 min to put the info together for that.
It took me 1.5 years to do it.

Sorry

 

Well ya did good. Be nice to have a couple extra bills as Rusty, The 55 and The 90 W250 could all use one. Not to mention the Three boats.

 

Well, if you'd known I was looking, I might have some reason to be a bit snarky... as it is: nope, I got no issues.

Good info, I'll save it for later.

 

Thats the only make that I'm aware of, and when I got it there weren't that many computer boat parts stores.
I would look around for other makes of electronic sending units and compare the operating system and the quality,

 

Just to clarify. Can i hook this up to my stock fuel gage? I understand this unit needs 12 volts to operate..

Thanks.

 

Yes it need 12V to operate the sending unit.