Aim brake pressure sensor question
02-15-2017, 10:43 PM
#1
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Aim brake pressure sensor question
I've been using AIM for a long time but just recently got around to putting in a couple of brake pressure sensors.
Unfortunately I can't seem to find any way to 'zero' them at no brake pressure. As such, one sensor reads around -23 and the other around +12 at no pressure. I can semi-adjust this out via math channels but there should be (in my opinion) a way to zero this without having to go in and redefine the curves for the sensors or do it in analysis (math channel).
Any ideas?
Thanks!
RacerX
Unfortunately I can't seem to find any way to 'zero' them at no brake pressure. As such, one sensor reads around -23 and the other around +12 at no pressure. I can semi-adjust this out via math channels but there should be (in my opinion) a way to zero this without having to go in and redefine the curves for the sensors or do it in analysis (math channel).
Any ideas?
Thanks!
RacerX
02-15-2017, 10:59 PM
#3
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There is not a zero function for pressure sensors. Which sensors do you have? Some of the ones in the past were more prone to showing this sort of static pressure offset. The newer KA sensors are much better about this.
The easiest correction is to make a custom sensor with the zero value offset. Most of the pressure sensors are .5 volts at 0 pressure and 4.5 volts at full pressure. What you can then do is make the .5 volts 21 psi and the 4.5 volts full pressure.
In the end for brake pressure, what you are looking at the is the shape of the curves and when they start, not the exact values. You will look at the values relative to each other, but the offset from the start is not really a problem.
The easiest correction is to make a custom sensor with the zero value offset. Most of the pressure sensors are .5 volts at 0 pressure and 4.5 volts at full pressure. What you can then do is make the .5 volts 21 psi and the 4.5 volts full pressure.
In the end for brake pressure, what you are looking at the is the shape of the curves and when they start, not the exact values. You will look at the values relative to each other, but the offset from the start is not really a problem.
02-16-2017, 09:57 AM
#4
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There is not a zero function for pressure sensors. Which sensors do you have? Some of the ones in the past were more prone to showing this sort of static pressure offset. The newer KA sensors are much better about this.
The easiest correction is to make a custom sensor with the zero value offset. Most of the pressure sensors are .5 volts at 0 pressure and 4.5 volts at full pressure. What you can then do is make the .5 volts 21 psi and the 4.5 volts full pressure.
In the end for brake pressure, what you are looking at the is the shape of the curves and when they start, not the exact values. You will look at the values relative to each other, but the offset from the start is not really a problem.
The easiest correction is to make a custom sensor with the zero value offset. Most of the pressure sensors are .5 volts at 0 pressure and 4.5 volts at full pressure. What you can then do is make the .5 volts 21 psi and the 4.5 volts full pressure.
In the end for brake pressure, what you are looking at the is the shape of the curves and when they start, not the exact values. You will look at the values relative to each other, but the offset from the start is not really a problem.