X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 16 Apr 2014 15:29:46 -0400 Message-ID: X-Original-Return-Path: Received: from moutng.kundenserver.de ([212.227.126.131] verified) by logan.com (CommuniGate Pro SMTP 6.0.9e) with ESMTPS id 6830746 for lml@lancaironline.net; Wed, 16 Apr 2014 14:23:30 -0400 Received-SPF: none receiver=logan.com; client-ip=212.227.126.131; envelope-from=nick@beaglepup.info Received: from Asus8 (h88-150-187-196.host.redstation.co.uk [88.150.187.196]) by mrelayeu.kundenserver.de (node=mreue006) with ESMTP (Nemesis) id 0LmRp1-1X9H8Z25Qp-00aGqo; Wed, 16 Apr 2014 20:22:52 +0200 X-Original-Message-ID: <66C3A41EE0DA4038BECCBDFFB3C5AAAF@Asus8> Reply-To: "Nick Long" From: "Nick Long" X-Original-To: References: In-Reply-To: Subject: Re: [LML] Re: VMS1000 pressure gauges on LNC2 X-Original-Date: Wed, 16 Apr 2014 19:21:52 +0100 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0037_01CF59A9.1F06ACF0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3522.110 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3522.110 X-Antivirus: avast! (VPS 140416-1, 16/04/2014), Outbound message X-Antivirus-Status: Clean X-Provags-ID: V02:K0:pzRIH8b/PAOxmYEy0pUh2VqOpQyc4Xu74XC4EMe0KFN ZAeeZsYf623T4d6jCOSUZUp8D4JGZW0/oNZUe5RFuW8Zp2MX4X E0NWZs57XktcD+qJWilqYgTkr2NF43APSxm4117tk5NveB3NC9 ZJtgMLr+WOwU3Hb49nyz409dJlG5XLFm5oKoZrI4NwLf7QSte3 rwbpQwZfGCK62UyfluXVm6U4WL8sOSK+znPhrr91QtnubH+kh4 fV98WbFpKxigFG10iGeg7JIbd+5dMUAwzH35I2pCs0zbEivyeh 2jnUf5PAv1dkMDj+mYfnYLKOIKIlAUey32IvTwOhqhVG/H1IRd aZiXIhM0YmqG50rZSEiI= This is a multi-part message in MIME format. ------=_NextPart_000_0037_01CF59A9.1F06ACF0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hello Everyone, A few weeks ago we had a discussion about this, and I then went away and = checked my installation. After measuring the voltages I concluded that = the display unit is ok, but both the Oil Pressure and Fuel Pressure = sensors are not behaving. So then I looked into replacements. There was an interesting post last = September from Bill Rumburg about using sensors from Measurement = Specialities; the originals are Honeywell Mediamates. Bill was saying the OP and FP transducers are different in their voltage = vs pressure response by a factor of 2 and he was exploring some = alternative devices. But here is another idea. Why not just find a = sensor that gives the correct output for FP? The same sensor will give = 2x the reading if used for OP, but that can be scaled down by 2 with a = simple precision resistor network. If that is correct, and I=E2=80=99ve followed the previous discussion = correctly, then Digi Key have the very item we need: http://www.digikey.com/product-detail/en/M3421-000006-100PG/MSP6892-ND/72= 6352 What do you think, people? Yours, Nick ------=_NextPart_000_0037_01CF59A9.1F06ACF0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

Hello Everyone,

A few weeks ago we had a discussion about this, and I then went = away and=20 checked my installation. After measuring the voltages I concluded that = the=20 display unit is ok, but both the Oil Pressure and Fuel Pressure sensors = are not=20 behaving.

So then I looked into replacements. There was an interesting post = last=20 September from Bill Rumburg about using sensors from Measurement = Specialities;=20 the originals are Honeywell Mediamates.

Bill was saying the OP and FP transducers are different in their = voltage vs=20 pressure response by a factor of 2 and he was exploring some alternative = devices. But here is another idea. Why not just find a sensor that gives = the=20 correct output for FP? The same sensor will give 2x the reading if used = for OP,=20 but that can be scaled down by 2 with a simple precision resistor = network.

If that is correct, and I=E2=80=99ve followed the previous = discussion correctly,=20 then Digi Key have the very item we need:

http://www.digikey.com/product-detail/en/M3421-000006-100PG= /MSP6892-ND/726352

What do you think, people?

Yours,

Nick

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