I am trying to identify the sensor functions by their locations.  There
are two units in the oil pan one seems to be level and the other
temperature.  There is a smaller unit located near the oil pressure
transducer and the oil filter pad is that water temp?  Any others?
Trying to characterize their electrical properties for a lookup table or
equation using the Picaxe A to D circuit. Thanks for any help.

Joe Berki

What year engine Joe? Have you downloaded the shop manuals?
http://www.wankel.net/~krwright/cars/rx7/manuals.html