[alfa] Oil Press. Gage Sender Test

["Roger Hambro" <rhambro@xxxxxxxxxxx>]

This evening just for fun I tested a spare '78 Spider oil pressure gage with
a 12 volt power supply and rheostat (to simulate sending unit) to see what
kind of sending unit resistance was required vs. pressure reading.

I got:
Sitting on the peg below 0 psi = 910 ohms or greater
0 psi   = 310 ohms
57 psi  = 108 ohms
114 psi = 15 ohms

Not exactly linear, but close.

Does anyone know of a "reliable" sending unit with this resistance curve?

Roger Hambro
'78 Spider
Algonquin, IL
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