Intake Air Temperature

[C. Brooks]

I've done a little temp measurement for a DAQ project I know instantaneous
is not a reality. I guess a better question would be "How many degrees per
second do you need the sensor to change?" Lets call it "Thermal slew rate"
:)

I was using a GM MAT sensor with a heat gun and getting 40-50 degrees per
second. If that helps any. Unfortunately I don't have a GM part number for
you guys...

Charles Brooks

-----Original Message-----
From: Ord Millar <ord at aei.ca>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, May 30, 1999 8:37 PM
Subject: Re: Intake Air Temperature


>I recently did a lot of worth with a temperature sensor in liquids - and a
>sensor in flowing liquid has a time constant of 5 seconds or so (time to
>reach 90% of the new value).  The TC for most sheathed  temperature sensors
>in air is 30-90 seconds.  The problem is that dry air has low heat capacity
>compared to solids or liquids, and gases are poor conductors of heat.
>