Return-Path: Received: from fed1rmmtao11.cox.net ([68.230.241.28] verified) by logan.com (CommuniGate Pro SMTP 4.2.4) with ESMTP id 457667 for flyrotary@lancaironline.net; Fri, 08 Oct 2004 12:35:43 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.28; envelope-from=ALVentures@cox.net Received: from BigAl ([68.107.116.221]) by fed1rmmtao11.cox.net (InterMail vM.6.01.03.04 201-2131-111-106-20040729) with ESMTP id <20041008163513.VFCJ17343.fed1rmmtao11.cox.net@BigAl> for ; Fri, 8 Oct 2004 12:35:13 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: Temperature calibration Date: Fri, 8 Oct 2004 09:35:21 -0700 Message-ID: <000001c4ad54$cdb05500$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C4AD1A.21517D00" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C4AD1A.21517D00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark wrote: Or, for a totally different approach to calibration, how about an = infrared thermometer. Just point it at the thermostat housing and read the temp = on the LCD readout. Couldn't be any easier than that. =20 It=92s true, they are easy, and a great way to go, but . . . you have to = use with care. I have one (different brand) that I borrowed from a racing friend who uses it to measure tire temps,. They measure quite = accurately (+- maybe 2%), and consistently, on a flat surface that is flat black. = On shiny curved surfaces your can get readings all over the place. Also, = the field of view expands with distance, so if you can=92t get close enough, = you may be reading lots of other stuff in the background. I painted about = 1=94 diameter spots with flat black paint where I want to measure, and get = the thing about =BD=94 away, and get good readings. On the curved surface of = the pump outlet there is some variation unless held dead center. =20 Al ------=_NextPart_000_0001_01C4AD1A.21517D00 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Mark wrote:

Or, for a totally different approach to = calibration, how about an infrared thermometer. Just point it at the thermostat housing and read the temp on the LCD readout. Couldn't be any = easier than that.

It’s true, they are easy, = and a great way to go, but . . . you have to use with care. =A0I have one = (different brand) that I borrowed from a racing friend who uses it to measure tire temps,. = =A0They measure quite accurately (+- maybe 2%), and consistently, on a flat = surface that is flat black.=A0 On shiny curved surfaces your can get readings = all over the place. =A0Also, the field of view expands with distance, so if you = can’t get close enough, you may be reading lots of other stuff in the = background. =A0I painted about 1” diameter spots with flat black paint where I want = to measure, and get the thing about =BD” away, and get good readings. = On the curved surface of the pump outlet there is some variation unless held = dead center.

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