[Diy_efi] wide band O2's

[gary]

> >> The sensors drift, but the calibration resistor
> >> stays the same.  I question the accuracy over
> >> time/use.
> >
> > What would you use to calibrate a sensor?
> 
> A reference cell.
> 
> In other words a sensor specifically designed to be a stable
> reference, ideal if it were traceable to a NATA equivalent.

Mike, we could include 'free air', or the stuff  (American version 
of the word here :) )  humans need to survive.

GAS


----- Original Message ----- 
From: "Mike" <niche at iinet.net.au>
To: <diy_efi at diy-efi.org>
Sent: Wednesday, July 06, 2005 4:51 AM
Subject: Re: [Diy_efi] wide band O2's


> At 11:46 AM 7/6/05, you wrote:
> >--- gary <gas- at charter.net> wrote:
> >
> >> As I understand it, WB controller (analog) circuitry
> >> that relies on a sensor calibration resistor without
> >> manual calibration, does not allow for sensor
> >> outputs as they drift over time/use.
> >
> 
> All sensors are subject to drift, electrochemical effects
> like tunnelling etc plus the obvious poisoning...
>