WB Instruments

[rr]

Heres a couple of mixes that are at good afr's. Supposed to be bubbled
through water before hitting the sensor.

12.5: 1 AFR:
  Carbon monoxide 3.4%
  Hydrogen 2.0%
  Carbon dioxide 10.0%
  Nitrogen balance

Stoich:

 Carbon dioxide 13.0%
  Nitrogen balance

There is also free air calibration. I consider this to be more of a unit
test. For stoich I've also used pure argon.

BobR.


Jack wrote:

> http://www.gothorsepower.com/     click on AFM-1 Air Fuel Ratio Analyzer
>
> I've got one and it's been working pretty good. The good thing is the 0-5v
> output, if you have data acq.
> The sensor is going bad on mine, but I think my friend left it on the car
> and drove around with it on too much.
>
> Anyone got any idea on checking accuracy on this thing? Probably calibration
> gas? but I'm not too familiar with calibration gas, is there archive on the
> list that I can look up?
>
> Jack
>
> ----- Original Message -----
> From: "John Dammeyer" <johnd at autoartisans.com>
> To: <diy_efi at diy-efi.org>
> Sent: Tuesday, July 10, 2001 10:31 AM
> Subject: WB Instruments
>
> >
> > I have some budget available to purchase a commercial WB O2
> > sensor+Instrument.  I'm not looking for a roll your own at this time but
> > something that can be calibrated or returned to the factory for
> > calibration.  I don't have $10,000 available but I understand there are
> > some for the $1K region.  Would someone post or email me a list please.
> >
> > Thanks.
> >
> > John
> >

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