Thank you, Paul.
Your answer is helpful, but I find that I may have implied the wrong
question. I would like to rephrase.
What have been experiences of users of the Honeywell 26PCAFA6D pressure
sensor for the measurement of fuel head? System implementation not at
issue - instrumentation amp and 10 bits fine.
Cheers,
Jan de Jong.
>Jan,
>
>I have one and it works well. The software allows you to calibrate it with
>a laptop and once I set it up I have not needed to revisit it in one year of
>operation. I currently have the static side of the pressure sensor
>connected to the tank vent, which is not as per Tony's design. I find that
>when I descend the fuel gauge reads low. I have been meaning to vent it as
>per Tony's design, however I have a fuel totalizer which works well, hence
>there hasn't been any pressing need.
>
>In closing, if you want a non invasive means of measuring your fuel contents
>then Tony's gauge works fine.
>
>Paul
>
>----- Original Message -----
>From: "Jan de Jong" <jan.de.jong@xs4all.nl>
>Subject: Europa-List: Hydrostatic pressure fuel level measurement?
>
>
>
>
>>>
>>> Tony Krzyzewski designed a non-invasive hydrostatic pressure fuel
>>> quantity measurement several years ago.
>>> A problem is that there is no obvious possibility for self calibration
>>> once it is in operation. But then, sometimes things work better than
>>> expected, sometimes worse.
>>> I'm wondering how the pressure measurement has fared in practice?
>>> Are people using it?
>>> What size errors?
>>> Suspected error sources - sensor and/or other variability?
>>> Long term stability of the sensor?
>>> Error modes - mostly offset or gain too?
>>> Has a combination with one or two digital single level sensors been tried?
>>> Might mechanically switching the sensor pressure input (break before
>>> make) for a periodic 1-point recalibration be feasible (and useful)?
>>>
>>> Grateful for any data and insights,
>>> Jan de Jong
>>> 461, the wings
>>
Honeywell 26PCAFA6D pressure sensor
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