X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-d22.mx.aol.com ([205.188.144.208] verified) by logan.com (CommuniGate Pro SMTP 5.0c6) with ESMTP id 782743 for flyrotary@lancaironline.net; Tue, 25 Oct 2005 02:12:05 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.144.208; envelope-from=WRJJRS@aol.com Received: from WRJJRS@aol.com by imo-d22.mx.aol.com (mail_out_v38_r6.3.) id q.dc.30b09c17 (18403) for ; Tue, 25 Oct 2005 02:11:15 -0400 (EDT) From: WRJJRS@aol.com Message-ID: Date: Tue, 25 Oct 2005 02:11:15 EDT Subject: Re: [FlyRotary] Re: Thermocouple Question To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1130220675" X-Mailer: 9.0 SE for Windows sub 5017 X-Spam-Flag: NO -------------------------------1130220675 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Doug, To be really accurate you need to run the thermocouple leads in the same wire. (material) What Bob is talking about is that each time you put a standard steel pin connector in line it causes a minor error in the reading. If you need thermocouple wire and connectors try Omega. _WWW.OMEGA.com_ (http://www.OMEGA.com) They sell a wide variety of scientific instruments heaters, controllers and thermocouples. They even have connectors with the pins made of the same material so you can be real accurate if needed. Sorry to be long winded if you already knew about this. Bill Jepson In a message dated 10/24/2005 8:58:11 PM Pacific Standard Time, jmpcrftr@teleport.com writes: >Hi Doug, > >I bought the P-110 EGT probes from Aircraft Spruce. These have 1/4 tab >connectors about 1 foot from the probe. The Micro-1000 probes are >about 1/2 the price of the P-110s. For some reason I didn't find them >back when I ordered. > >I plan on using faston connectors crimped to type K thermocouple lead >all the way from there to my EM-2 which will have crimp on pins for D >connector. Each discontinuity will introduce some error, but it will >be small compared to the EGT you are measuring. Any EGT probe should >work OK. Mine are located about 1.5 inches from the exhaust port. I >should be able to report on their survivability in another month or two. > >Bob W. -------------------------------1130220675 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Doug,
 To be really accurate you need to run the thermocouple leads in t= he=20 same wire. (material) What Bob is talking about is that each time you put a=20 standard steel pin connector in line it causes a minor error in the reading.= If=20 you need thermocouple wire and connectors try Omega. WWW.OMEGA.com They sell a wide variety of=20 scientific instruments heaters, controllers and thermocouples. They even hav= e=20 connectors with the pins made of the same material so you can be real accura= te=20 if needed. Sorry to be long winded if you already knew about this.
Bill Jepson
 
 
In a message dated 10/24/2005 8:58:11 PM Pacific Standard Time,=20 jmpcrftr@teleport.com writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>>Hi=20 Doug,
>
>I bought the P-110 EGT probes from Aircraft Spruce.&n= bsp;=20 These have 1/4 tab
>connectors about 1 foot from the probe.  Th= e=20 Micro-1000 probes are
>about 1/2 the price of the P-110s.  For=20= some=20 reason I didn't find them
>back when I ordered.
>
>I pla= n on=20 using faston connectors crimped to type K thermocouple lead
>all the= way=20 from there to my EM-2 which will have crimp on pins for=20 D
>connector.  Each discontinuity will introduce some error, bu= t it=20 will
>be small compared to the EGT you are measuring.  Any EGT=20 probe should
>work OK.  Mine are located about 1.5 inches from=20= the=20 exhaust port.  I
>should be able to report on their survivabili= ty=20 in another month or two.
>
>Bob W.
 
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