Where you mount your moto map sensor
05-05-2008, 10:59 PM
#5
0.5 BAR
Join Date: Apr 2005
Posts: 105
Re: Where you mount your moto map sensor
Originally Posted by Joshb_
Might try to do this if I can find the thread on it
I just went the 4 dollar radioshack project box route.
05-06-2008, 10:28 AM
#8
1.5 BAR
Join Date: Jul 2007
Posts: 752
Re: Where you mount your moto map sensor
I'm pretty sure that the outside of the package needs to be exposed to atmospheric pressure to operate correctly. Could be wrong though. Wait, no, I'm right :
I *think* sealing that chamber could cause it to be inaccurate, but I'm probably just being paranoid.
Obviously it has a vacuum reference, but there could be offsets caused by pressures on the case. I know for a fact that if you say tighten the screws that hold them too much you will create wrong readings.
Just a thought before you bury one in epoxy or something.
I assume you guys are talking about the SMD type ones?
Fred.
I *think* sealing that chamber could cause it to be inaccurate, but I'm probably just being paranoid.
Obviously it has a vacuum reference, but there could be offsets caused by pressures on the case. I know for a fact that if you say tighten the screws that hold them too much you will create wrong readings.
Just a thought before you bury one in epoxy or something.
I assume you guys are talking about the SMD type ones?
Fred.
05-06-2008, 02:10 PM
#10
0.0 BAR
Join Date: May 2005
Posts: 0
Re: Where you mount your moto map sensor
Originally Posted by fe3tcourier
I'm pretty sure that the outside of the package needs to be exposed to atmospheric pressure to operate correctly. Could be wrong though. Wait, no, I'm right :
Fred, only gauge style sensors need P2 to be exposed to atmo. In the absolute pressure sensors, the P2 port is closed off and an almost complete vacuum is created behind the strain gauge sensor.
