NTK UEGO calibration

[David Hunt]

Where might the info on calibration gasses be found?

dh
----- Original Message -----
From: "Bruce" <nacelp at bright.net>
To: <diy_efi at diy-efi.org>
Sent: Monday, August 21, 2000 11:56 AM
Subject: Re: NTK UEGO calibration


>
>
> You can buy or mix up some calibration gases.
> You have to remember these items are subject to the full wrath of the EPA.
> Honda ain't gonna risk messing with them folks.  Emission stuff gets a
> higher level of scrutiny, then medical stuff anymore.
> Also, remember, this isn't a lab grade unit.
> If you wanting to get critical, and absolute then save your money for the
> units that claim that accuracy.
> Bruce
>
>
> From: <Neil.Poersch at mts.mb.ca>
> Subject: Re: NTK UEGO calibration
> > This begs the question about how is the DIY WB O2 unit calibrated?
> Looking
> > at the schematic the UEGO sensor's calibration resistor is used to
control
> > Vout from the unit.  I assume that the manufacturer of the UEGO has
> > selected an appropriate value resistor for each individual sensor.  But
> how
> > can a user check this?  For example to confirm that a measured AFR, say
> > 13.0 is exactly 13.0?  Has anyone who has built one of these units
> > confirmed proper AFR readings?
> > Neil
>
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