TIT probes

Submitted by Anonymous on

Forums: 

From: <marv [at] lancair.net>
Subject: Re: TIT probes
Date: Mon, 09 Jul 2007 21:03:40 -0400
To: <lml>






Posted for "bob mackey" <n103md [at] yahoo.com>:

> The TIT GAS is cooler than the exhaust GAS...
> it's further down the line... it's had time to cool more.

> So, why does TIT READ higher?

The exhaust leaving the exhaust port cools because it expands.
Putting a second probe further down the pipe will show a lower
temperature IF the gases have expanded on their way to the
second probe. On the other hand, if there is some restriction
in the flow path (like a turbine) that has kept the pressure
from dropping, then the temperature will not drop either.

PV = nRT
(still true 87 years after Nernst got his Nobel prize)

There are second and third reasons why the TIT is typically
higher than the open-pipe EGT. The lower compression ratio
with the turbo engine means that the combustion gases have
expanded (and cooled) less than in the normally-aspirated
engine. Also, the turbo engine may have had a higher intake
gas temperature (and pressure) before compression and combustion.

-bob





 

TIT probes

Submitted by Anonymous on

From: Walter Atkinson <walter [at] advancedpilot.com>
Sender: <marv [at] lancaironline.net>
Subject: Re: [LML] Re: TIT probes
Date: Tue, 10 Jul 2007 11:40:27 -0400
To: <lml [at] lancaironline.net>
Message Header


Undecoded Message

While that's true, the EGTs will also be higher from the lower compression ratios and the higher IATs.


Walter


On Jul 9, 2007, at 8:03 PM, marv [at] lancair.net

wrote:


There are second and third reasons why the TIT is typically
higher than the open-pipe EGT. The lower compression ratio
with the turbo engine means that the combustion gases have
expanded (and cooled) less than in the normally-aspirated
engine. Also, the turbo engine may have had a higher intake
gas temperature (and pressure) before compression and combustion.


TIT probes

Submitted by Anonymous on

From: John B <2thman1 [at] gmail.com>
Sender: <marv [at] lancaironline.net>
Subject: TIT probes
Date: Mon, 28 Jul 2014 15:42:24 -0400
To: <lml [at] lancaironline.net>
Message Header


Undecoded Message

Hello all,



I have a question about probes for the TIT sensor on the TSIO-550.  I have GRT monitor and modified Garrett turbos, so I'm told. GRT apparently doesn't sell the probes that match the picture I sent them but they did tell me they need a K-type thermocouple.  My question is can anyone tell me where to get replacement probes for this system?   I have one bad one.



Thanks



Sent from my iPad

TIT probes

Submitted by Anonymous on

From: Lynn Farnsworth <farnsworth [at] charter.net>
Sender: <marv [at] lancaironline.net>
Subject: RE: [LML] TIT probes
Date: Tue, 29 Jul 2014 05:37:47 -0400
To: <lml [at] lancaironline.net>
Message Header


Undecoded Message

John,



This is what I was told by GRT  when I needed new TIT probes , "TIT probe -

Model B Alcor EGT probe type K Part # 86245 from Aircraft Spruce (at that

time $79.95 each)". This is actually an EGT probe but this is what I needed

for my Chelton system.



Lynn Farnsworth

Lancair Legacy #235

TSIO-550 Powered

Race #44



-----Original Message-----

From: Lancair Mailing List [lml [at] lancaironline.net (mailto:)

] On Behalf Of John

B

Sent: Monday, July 28, 2014 3:42 PM

To: Lancair Mailing List

Subject: [LML] TIT probes



Hello all,



I have a question about probes for the TIT sensor on the TSIO-550.  I have

GRT monitor and modified Garrett turbos, so I'm told. GRT apparently doesn't

sell the probes that match the picture I sent them but they did tell me they

need a K-type thermocouple.  My question is can anyone tell me where to get

replacement probes for this system?   I have one bad one.



Thanks



Sent from my iPad





--

For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html

TIT probes

Submitted by Anonymous on

From: Lynn Farnsworth <farnsworth [at] charter.net>
Sender: <marv [at] lancaironline.net>
Subject: RE: [LML] TIT probes
Date: Tue, 29 Jul 2014 05:37:59 -0400
To: <lml [at] lancaironline.net>
Message Header


Undecoded Message

John,



From Aircraft spruce web site:



http://www.aircraftspruce.com/catalog/inpages/alcor_probes4.php



Now $88.95



Lynn



-----Original Message-----

From: Lancair Mailing List [lml [at] lancaironline.net (mailto:)

] On Behalf Of John

B

Sent: Monday, July 28, 2014 3:42 PM

To: Lancair Mailing List

Subject: [LML] TIT probes



Hello all,



I have a question about probes for the TIT sensor on the TSIO-550.  I have

GRT monitor and modified Garrett turbos, so I'm told. GRT apparently doesn't

sell the probes that match the picture I sent them but they did tell me they

need a K-type thermocouple.  My question is can anyone tell me where to get

replacement probes for this system?   I have one bad one.



Thanks



Sent from my iPad





--

For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html

TIT probes

Submitted by Anonymous on

From: Jon Hadlich <aisystems15 [at] gmail.com>
Sender: <marv [at] lancaironline.net>
Subject: TIT probes
Date: Tue, 29 Jul 2014 05:39:01 -0400
To: <lml [at] lancaironline.net>
Message Header


Undecoded Message
Any type K probes should be available from Electronics International that will work with the GRT EIS.

--

AI Systems
(541)815-7381

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