Return-Path: Received: from wb2-a.mail.utexas.edu ([128.83.126.136] verified) by logan.com (CommuniGate Pro SMTP 4.2b8) with ESMTP-TLS id 328866 for flyrotary@lancaironline.net; Wed, 21 Jul 2004 11:06:20 -0400 Received-SPF: error receiver=logan.com; client-ip=128.83.126.136; envelope-from=msteitle@mail.utexas.edu Received: (qmail 80511 invoked from network); 21 Jul 2004 15:05:49 -0000 Received: from dhcp-191-101.per.utexas.edu (HELO benefits3.mail.utexas.edu) (146.6.191.101) by wb2.mail.utexas.edu with RC4-SHA encrypted SMTP; 21 Jul 2004 15:05:49 -0000 Message-Id: <5.1.1.5.2.20040721100001.025aa438@localhost> X-Sender: msteitle@mail.utexas.edu@localhost X-Mailer: QUALCOMM Windows Eudora Version 5.1.1 Date: Wed, 21 Jul 2004 10:05:15 -0500 To: "Rotary motors in aircraft" From: Mark Steitle Subject: Re: [FlyRotary] Re: High Temperature Readings In-Reply-To: Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="=====================_63409562==.ALT" --=====================_63409562==.ALT Content-Type: text/plain; charset="us-ascii"; format=flowed Tommy, Maybe you could fasten a thermocouple next to the sensor and compare the readings. I wired my EM-2 with 3 EGT's and 4 CHT thermocouples. The extra CHT TC can be used for lots of things, including checking the accuracy of the other temp sensors. Mark S. At 06:05 PM 7/20/2004 -0400, you wrote: >VERY Interesting , Mark! I have always thought my coolant was reading >10-12 degrees too high. I can t remember whether I used tape there or >not, but the cowl is coming off again. > >Regards, Tommy James<>< > > > >---------- >From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On >Behalf Of Mark Steitle >Sent: Tuesday, July 20, 2004 8:57 AM >To: Rotary motors in aircraft >Subject: [FlyRotary] High Temperature Readings > > > >I was surfing the egauges.com site this morning and ran across a FAQ that >I found interesting in light of some of the postings concerning high >oil/water temps. Could the use of teflon tape possibly be the real problem? > >Mark S. > >Should I use sealant or Teflon tape on the threads of my sender? Do not >use sealant (including Teflon tape or plumbers pipe dope) on the threads >of temperature or pressure senders. This will not allow the sender to >properly ground itself to the engine and will cause the temperature to >register high and the pressure to register low. This does not include >floating ground senders which include a second terminal specifically for >grounding. > --=====================_63409562==.ALT Content-Type: text/html; charset="us-ascii" Tommy,
Maybe you could fasten a thermocouple next to the sensor and compare the readings.  I wired my EM-2 with 3 EGT's and 4 CHT thermocouples.  The extra CHT TC can be used for lots of things, including checking the accuracy of the other temp sensors. 

Mark S. 

     At 06:05 PM 7/20/2004 -0400, you wrote:

VERY Interesting , Mark!   I have always thought my coolant was reading 10-12 degrees too high.  I can t remember whether I used tape there or not, but the cowl is coming off again.

Regards, Tommy James<><

 
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Tuesday, July 20, 2004 8:57 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] High Temperature Readings

 

I was surfing the egauges.com site this morning and ran across a FAQ that I found interesting in light of some of the postings concerning high oil/water temps.  Could the use of teflon tape possibly be the real problem? 

Mark S.

Should I use sealant or Teflon tape on the threads of my sender? Do not use sealant (including Teflon tape or plumbers pipe dope) on the threads of temperature or pressure senders. This will not allow the sender to properly ground itself to the engine and will cause the temperature to register high and the pressure to register low. This does not include floating ground senders which include a second terminal specifically for grounding.
 
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