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Message
Air in the lines affects the readings.. but then I realized the air affects
the CHANGES of pulsatile flow.. it dampens it... like the pressure wave with
your heartbeat. In a constant-pressure situation (or at least "non-pulsatile"
pressures.. in which the character of the pressure waveforms dont matter) I
guess you are right.. pressure is pressure.. and the reason we are measuring it
shouldnt matter on the presence or absense of air.
Hi
Dave,
Yes, I
suspect you're correct about the dampening effect of having some air in the line
of the pressure sender. The sender itself if likely not
that fast acting itself. Normally, we're just looking for a
reasonable short term average of the oil pressure, but after my
oil cooler rupture, I would like to see a real time reading one of
these days. I suspect that you'd see some pretty mean pulses on that oil
pressure line if you had a fast transducer and an o-scope. One of
these days I'll try it.
Cheers,
Rusty (more
brain "space" than I used to have)
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