Kestrel weather station

[V M Kauffman]

How do you measure Oxygen do you have a sensor? I have used a Oxygen Meter since 1985. % of oxygen has a big affect on performance! a change from 19.8% to 19.5 is big!

Originally Posted by Altronics

PerformAIRE weather stations are the only patented system that has a Density Altitude calculation specific for determining horse power in an internal combustion engine. It is critical to measure the amount of oxygen and the amount of water in a sample of air in order to determine correctly how it will effect the change in horsepower.

Systems that are designed for hiking, aviation, sailing, etc that are not licensed by Altronics can only calculate "text book" Density that will not always correctly relate to horsepower changes. Although it may seem ok under minimal or similar changes in atmosphere it will prove inaccurate as conditions change.

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[Altronics]

Originally Posted by V M Kauffman

How do you measure Oxygen do you have a sensor? I have used a Oxygen Meter since 1985. % of oxygen has a big affect on performance! a change from 19.8% to 19.5 is big!

Worse, Like asking a Ford if he should by a Hyundai!!!!!


Yes, Oxygen is the name of the game. Fuel + O2 makes horsepower. The Oxygen sensor is an option on almost all of our weather stations. Without it we assume a constant percentage of O2 in the atmosphere and by measuring the density we know the assumed O2 content. With an O2 sensor and by measuring the density we do not have to ASSUME, but can calculate the ACTUAL amount of Oxygen.

With that said, if you race at the same location all the time the O2 level tends to be stable because the environment does not change, (vegetation, pollution, etc..). So the oxygen sensor tends to benefit the racer that travels to many different tracks that are located in different environments.

[Jim Hanig]

Can the older units be up graded?

[strange1]

I don't know about the Kestrel but my 98 model performaire would cost $300 or more to up grade. Thus, I am buying a new weather station.

Robert
Stk 2061

[Altronics]

Originally Posted by strange1

I don't know about the Kestrel but my 98 model performaire would cost $300 or more to up grade. Thus, I am buying a new weather station.

Robert
Stk 2061

Hopefully the 16 years you have used it have served you well!!!!!!!!!

[BLAZER]

Originally Posted by Jim Hanig

Can the older units be up graded?

Yes to the Kestrel 4250-

[Altronics]

Originally Posted by Jim Hanig

Can the older units be up graded?

Not sure if you are asking about PerformAIRE's or not, but the answer is yes they can. There is a service form on the Tech Support page of our website that has all the info needed to send it in.

Normal update and calibration fee is $89. If your unit is built before 2004 and needs other repairs it may cost addtional as stated on form.

[vic guilmino]

what unit would you recommend for a poor boy that travels

[strange1]

Fred, I have been very pleased with the performaire unit. No complaints at all! I also would like to say that I appreciate your feedback. One question, could I expect the same quality performance with the pocket unit as opposed to the performaire?

Thanks,

Robert
Stk 2061

[Altronics]

Originally Posted by strange1

Fred, I have been very pleased with the performaire unit. No complaints at all! I also would like to say that I appreciate your feedback. One question, could I expect the same quality performance with the pocket unit as opposed to the performaire?

Thanks,

Robert
Stk 2061

The sensor technology/accuracy is the same on all of our PerformAIRE systems. You would be giving up the prediction/data base capability when comparing to the PerformAIRE model PA2.