Fuel sender make/model

[GSXR69]

Hi, does anyone recognize the make and model number of these fuel senders. One of them (White label) is not working and I'm trying to figure out how to test it and/or the make and model number.

Thanks in advance

 

[Kevin Holbrook]

Capacitive fuel senders. Second one is Centroid/Skysport brand. Aircraft or aircraft Spruce has them

Fuel Probe 12V-24V 3 Inch Bend 0-5V | Aircraft Spruce

Fuel Probe 12V-24V 3 Inch Bend 0-5V 12 with 3 bend probe, 12V.

www.aircraftspruce.com

Verify the length you need. They come in different lengths and can be trimmed.

 

[GSXR69]

Thanks!

 

[GSXR69]

Anyone know how to test the sender? There is no resistance via multimeter

 

[Dan Thomas]

Anyone know how to test the sender? There is no resistance via multimeter

There won't be any resistance to measure. It's a capacitor whose capacitance varies with the fuel level in it.

 

[Capt. Geoffrey Thorpe]

Anyone know how to test the sender? There is no resistance via multimeter

https://www.aircraftspruce.com/catalog/pdf/skysportsfuelinstall.pdf

Connect to power and ground, measure the signal out with a voltmeter as you raise and lower it the tank.
Or, trigger the calibration mode which should cause the gauge to bounce between full and empty per the above document.