Darick, A few years ago I was involved in a project that required thermal couples. We ended up making our own and adding extension wire. The extension wire is just a lower priced thermal couple wire and the brand is not important. Due to the high exhaust temps you can't make your own junctions as the wire needs to be laser welded. Then they put them in a fancy mount so they can charge a lot. Once out of the exhaust you can safely add the extension wire taking care to join similar colors. We twisted the connections and then soldered our extension connections. Contrary to logical thought, soldering the extension will not result in a separate voltage producing junction. If it does make a difference, it is only a degree and is not noticeable. I hope this helps. The link below may help you identify the various types. http://www.omega.com/techref/thermcolorcodes.html
Mike @KDLL --- In [email protected], c.d.gu...@... wrote: > > > Okay fellows, something different. > > > > I'm installing (with the oversight of my A&P) an CHT gauge and need wire to > connect the gage to the probes. Aircraft Spruce sells "Falcon EGE" (engine > gage extension) wire and they can't tell me if it's the correct thing to > use! I couldn't find any tech info on their site and nothing under > Falcon. It's my understanding the wire connecting the probe to the readout > instrument is sensitive to temperature and that special wire construction > optimized for this application would be the best bet. > > And while I'm asking, what's the best type of wire to use for hooking up > instruments? Shielded, unshielded, tefzel, shielded tefzel, etc.   Am I > asking too much for a generalized answer? Aircraft spruce offers many > choices without a definite guideline for making the correct choice. > > > > Darick >
