Pyrometer Probe Installation Question

[tonydca]

Because the temperatures are over 100 degrees C, it's probably a thermocouple rather than a thermistor.

What makes you say that? the engine temperature sensors are thermisters.
Also when searching for information on pyrometers, all the stuff I found talked about thermisters, not thermocouples.

I agree completely; if it is a thermistor, no problemo.

If a thermocouple, make sure you have the proper extension cable material.

Just know b4 you cut&splice; that's all!

[mararmeisto]

Because the temperatures are over 100 degrees C, it's probably a thermocouple rather than a thermistor.

What makes you say that? the engine temperature sensors are thermisters.
Also when searching for information on pyrometers, all the stuff I found talked about thermisters, not thermocouples.

Engine temperature sensors are generally located in the cooling water, and since one doesn't want the water to boil, it's okay to use a thermistor. Linear response above 100 C is not always acheivable, so thermocouples are used. This is one of the sources I found regarding this information: http://www.process-controls.com/enercor ... s_rtds.htm

[Green1]

This is one of the sources I found regarding this information: http://www.process-controls.com/enercor ... s_rtds.htm

Interesting, I had actually been looking for that sort of information but had not been able to find it... (apparently my google skills are weak at the moment...)
Given that information, you're probably right, must be a thermocouple, and yes, in those cases the leads could be relevant.

[mararmeisto]

Interesting, I had actually been looking for that sort of information but had not been able to find it... (apparently my google skills are weak at the moment...)

As a level-12 Google Mage, it's not a so much a matter of what one googles as much as how one googles. One must know what one is looking for - a matter of knowing the question before asking it. Only then will one find the answers one seeks.

[norisan]

Just talked to tech help at Shiftglow Gauges and they say increasing the length of the probe wiring will not affect the gauge accuracy. Can't speak for other manufacturers.

[Jsq]

why not just take off your egr valve and put the pyro probe in the new plate, then you get a great double duty, get rid of the black smoke monster and put in a pyrometer.

Am I correct in thinking that the EGR is connected pre-turbo? If so that would help me greatly as I want to install my pyrometer pre-turbo rather than downstream.

[jwfchase]

Am I correct in thinking that the EGR is connected pre-turbo? If so that would help me greatly as I want to install my pyrometer pre-turbo rather than downstream.

You are correct.