Who had a "Hawk exhaust gas analyzer"?

[sc2dave]

I have had one that I won off Ebay for quite a few years now. I'm missing the black sniffer cable. There is a 3 wire connector on the side. I don't believe that I can still get parts for this. Is there any way where I can maybe hook up a 3 wire O2 sensor to that plug and maybe make it work? Maybe someone here knows how these work. This is what it looks like .http://www.ebay.com/itm/Hawk-Exhaust-Ga ... 85&vxp=mtr Thanks

[Kevin Johnson]

http://www.google.com/patents/US3549327 possible method of operation. Cited by yet another.

Hawk-766-Gas-Analyzer.pdf

Similar in function but case design different.

Seems like an interesting crusade but might just be simpler and more accurate to purchase an O2 sensor with a known output graph/table and monitor the voltage.

[sc2dave]

Thanks for the links. I wanted to use this,since I already had it laying around.

[Kevin Johnson]

Thanks for the links. I wanted to use this,since I already had it laying around.

You might experiment with some low voltage battery cells (2032 for example) to the leads and try to get a reading on the meter. Compare with a known good voltage meter and see if the data is consistent, perhaps assigning different units to those present on the Hawk meter face. That would allow you to use the case as a voltage meter for the O2 sensor as you propose.

[Tuner]

That is a Wheatstone Bridge type analyzer. Like the instructions say in the PDF link above, it measures with a "thermal conductivity cell" which is in no way related to a Nernst cell Oxygen sensor. Unfortunately, it will not work without the thermal conductivity cell.

The Wheatstone bridge "thermal conductivity cell" measurement depends on the amount of Hydrogen in the exhaust sample, not Oxygen. This type A/F meter is reasonably accurate on the rich side of stoichiometric, but not on the lean side.