[Diy_efi] wide band O2's

[WopOnTour]

Adam
Here is an interesting article on  WBO2 calibration from the Bruce & Al at 
Megasquirt
http://www.msefi.com/msinfo/PWC/
Regards
WOT
----- Original Message ----- 
From: "Adam Wade" <espresso_doppio at yahoo.com>
To: <diy_efi at diy-efi.org>
Sent: Tuesday, July 05, 2005 9:46 PM
Subject: Re: [Diy_efi] wide band O2's


> --- 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.
>
> Why would output drift over time, assuming a given
> temperature of operation?
>
>> The sensors drift, but the calibration resistor
>> stays the same.  I question the accuracy over
>> time/use.
>
> Again, though, you have to have something to calibrate
> it with.  What would you use to calibrate a sensor?
>
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