Return-Path: Received: from [65.54.169.171] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3082828 for flyrotary@lancaironline.net; Wed, 17 Mar 2004 09:57:59 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 17 Mar 2004 06:57:59 -0800 Received: from 64.159.104.27 by bay3-dav141.adinternal.hotmail.com with DAV; Wed, 17 Mar 2004 14:57:59 +0000 X-Originating-IP: [64.159.104.27] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] EGT/CHT wiring Date: Wed, 17 Mar 2004 09:57:57 -0500 MIME-Version: 1.0 X-Mailer: MSN Explorer 7.02.0011.2700 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0003_01C40C06.532EA740" Message-ID: X-OriginalArrivalTime: 17 Mar 2004 14:57:59.0560 (UTC) FILETIME=[3D0F6880:01C40C30] ------=_NextPart_001_0003_01C40C06.532EA740 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The EM2 will work with either grounded or ungrounded CHT (J type) and EG= T (K type) thermocouples. BUT! They must be one or the other, not "may= be" grounded. If ungrounded, you need to follow the instructions in the = installation guide about grounding the red TC lead at the connector to on= e of the spare ground terminals. Then make sure the sensing end does not= short to ground. Most CHT & EGT sensors are grounded type (TC welded or clamped to grounde= d part of the sensor). Tracy Crook ----- Original Message ----- From: Mark Steitle Sent: Tuesday, March 16, 2004 7:02 PM To: Rotary motors in aircraft Subject: [FlyRotary] EGT/CHT wiring I've been wrestling the wild EMU and need some help! (actually, it has =20 been pretty easy, and fun, in a wierd sort of way). I purchased the EGT probes with the weld-on bungs from ACS. The problem = is =20 the leads are only about a foot long and they have ring terminals on the =20 ends. Do I cut these and solder (or weld) extensions so they will reach =20 the EMU box? Would a standard terminal block work? Any other solutions? For the CHT probes, I have drilled a 1/8" hole in the web next to each =20 leading spark plug. The bottom of the hole stops at the steel liner of t= he =20 center housing. I have ordered "J" type thermocouple wire and will tig =20 weld the connections. My question is... do I need to insulate the juncti= on =20 to prevent it from making contact with the metal housing, or does that =20 matter? Should I pot these into the holes, or just stick them down into =20 the holes and leave it go at that? Mark S. (my turn to wrestle the wild EMU) >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_001_0003_01C40C06.532EA740 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

The EM2 will w= ork with either grounded or ungrounded CHT (J type) and EGT (K= type) thermocouples. BUT! They must be one or the othe= r, not "maybe" grounded. If ungrounded, you need to follow the inst= ructions in the installation guide about grounding the red TC lead at the= connector to one of the spare ground terminals. Then make sure the= sensing end does not short to ground.

Most = CHT & EGT sensors are grounded type (TC welded or clamped to grounded= part of the sensor).

Tracy Crook

----- Original Message -----
From: M= ark Steitle

Sent: Tuesday, M= arch 16, 2004 7:02 PM

To: Ro= tary motors in aircraft

Subject:= [FlyRotary] EGT/CHT wiring

I've been wrestlin= g the wild EMU and need some help! (actually, it has
been prett= y easy, and fun, in a wierd sort of way).

I purchased the EGT prob= es with the weld-on bungs from ACS. The problem is
the leads ar= e only about a foot long and they have ring terminals on the
ends.&nb= sp; Do I cut these and solder (or weld) extensions so they will reach the EMU box? Would a standard terminal block work? Any other= solutions?

For the CHT probes, I have drilled a 1/8" hole in the = web next to each
leading spark plug. The bottom of the hole sto= ps at the steel liner of the
center housing. I have ordered "J"= type thermocouple wire and will tig
weld the connections. My q= uestion is... do I need to insulate the junction
to prevent it from m= aking contact with the metal housing, or does that
matter? Shou= ld I pot these into the holes, or just stick them down into
the holes= and leave it go at that?

Mark S.
(my turn to wrestle the wild = EMU)

>> Homepage: http://www.flyrotary.com/<= BR>>> Archive: http://lancaironline.net/lists/fly= rotary/List.html

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