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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: Oil level guage
Cosmo wrote: > > The Holy^H^H^Haynes Renault manual says: > > 2 The guage is controlled by an electronic circuit located in the > instrument panel which receives information from a sensor located in > the sump. The sensor contains a high resistance wire whose thermal > conductivity alters according to it depth of immersion in the oil. > > No details are given of the "electronic circuit" and fault diagnosis > is by substitution. > > My guage works very intermitently, both level and pressure, so I > needed to look at it anyway. I'll try to locate the circuit and see > if it can be replicated or removed as a unit. I already know a > number of Renault breakers that should be able to supply a second > hand unit for experimentation. > > Failing that, I would be happy with just an indicator that showed > low, ok, high. Would this be posible with a few fixed resistors > and some wires at the appropriate points on the dip-stick or do > I need some electronics to make sense of the resistance of oil? > > Cosmo I have seen a auto electric project book (published in the 60's) that contained a wiper delay circuit, head light reminder buzzer, etc. Also included was a low oil light. If I remember correctly , it wired a thermistor on to the dip stick, the thermistor acting as a switch to energize the circuit. (As I am not an engineer, thermistor might not be the right term, however, spellcheck had no other bright suggestions!) george leicht glite@eos.net References:
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