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philba said:is there a reason why it has to be a pressure sensor? there are certainly other ways to sense the depth of a fluid.
Capacitance is a very effective approach. make a probe that has 2 parallel "plates". the deeper it is immersed in the fluid, the higher the capacitance...
Thanks, i think i like the idea of the prode, but u need to break it down a little, measuring rise time, RC rise time, all sound a little complex.
still open to suggestions.
thanks for this suggestion, but i really need to know what type of microcontroller i could employ, is is going to be an ATMEL or PIC,? if PIC what NOS.philba said:is there a reason why it has to be a pressure sensor? there are certainly other ways to sense the depth of a fluid.
With a microcontroller, you can directly measure the rise time or you can create an oscillator (use a 555) and measure the period.
philba said:I would design the overall features of your project first and then us that to drive MCU selection.
I've used PICs for this - 16F628A and 16F88. The 16F88 is particularly nice