O2 sensor voltage output

[Terry Sare]

     Orin,
     
     I looked for the AD597 and only came up with the AD595 for a Type K. 
     Is this the same, just pin/cost reduced? Also, is a Type K temperature 
     max of 1250 C all right for sticking in the header next to the exhaust 
     port? In other word, what is the temperature range for EGT. 
     
     ts

     <snip>
BTW, Analog Devices make a nice chip for interfacing 
thermocouples, the AD597.  About $4 each if you are 
prepared to use an 8 pin surface mount.
One of these, a relatively simple PIC based board,
an lsm11, an EGT thermocouple and you'd have a pretty 
accurate meter!
     
Sounds like the lsm11 isn't too much more expensive 
than what they ask for some normal Bosch sensors - 
about $140 for my car!
     
Orin.