Info on Thermocouple

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Jan 22, 2008 | 01:30 PM

eatfish

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Mountain Pass

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Info on Thermocouple

From what I can see, there are a couple different thermocouples for pyrometers. There is a Type K Thermocouple and another kind. What is the difference? Does it matter which I use for a pyrometer measuring exhaust temperatures in the manifold?

Jan 22, 2008 | 01:51 PM

miller_feed

Hook it, I'll pull it.

Joined: May 2007

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From: Grand Lake, La.

It does not make a difference which one you use. Some like to drill and tap the manifold. I went with drilling and clamping into the up-pipe.

Jan 22, 2008 | 01:57 PM

eatfish

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Mountain Pass

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I figured I would just tap the manifold. Looks to easy. Is the type K thermocouple the one I want?

Jan 22, 2008 | 02:01 PM

miller_feed

Hook it, I'll pull it.

Joined: May 2007

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From: Grand Lake, La.

I don't know about that because I drilled and used the clamp type. Heck I don't even remember what mine was. Getting to old.

Jan 22, 2008 | 02:24 PM

dc2842002

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From: York, SC

I don't know what the other one is but a K type can measure between -200 and 1250 C. This will more that cover the temperature range you should see for EGT's.

Jan 22, 2008 | 03:36 PM

MR5x5

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From: Issaquah, WA

Type K is a standard T/C for high temperature applications. The various T/C materails produce differrent voltages responses over different temperatrue ranges. Just make sure your reader is compatible with the type of T/C you use.

Jan 22, 2008 | 10:36 PM

schmuly

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From: Yahk BC

I've installed many thermocouples in asphalts plants over the years. The other type is a "type J". I have never heard of it for automotive applications.

The difference between the two is the millivolts that is produced. The gauge is either compatible for type J or type K. not interchangable!

Schmuly