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wdaniell.longport(at)gmai
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 Posted: Wed Mar 07, 2018 7:52 am Post subject: Back instruments |
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So the saga continues.
New Dynon screen installed and working fine.
I chickened out of remodeling the entire instrument panel. I have decided to install a cluster of 1.25" round instruments for back up.
- Tach
- MAP
- Oil temp
- Oil press
- Ammeter (I am going to install a hall effect sensor for the Dynon and use the shunt for the round gauge)
- Fuel pressure.
Now you all educated me as to the fact that you cant run two gauges of a single resistive senders.
It turns out that all temp senders are resistive. Just for the info of anyone else who is doing this, UMA can make a dual sensor sender - one with two sensors with two different connections so that solves the temperature sender.
However UMA tells me that voltage based senders can in fact power more than one gauge. So the solution is simply to buy the round gauges and use the Dynon sensors kit to power both Dynon Screen and round gauges.
Will
William Daniell
LONGPORT
+57 310 295 0744
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h&jeuropa
Joined: 07 Nov 2006
Posts: 645
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| Posted: Fri Mar 09, 2018 4:16 am Post subject: Re: Back instruments |
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Will,
I have disassembled the VDO oil pressure sender that comes standard on a Rotax 914. It is a resistive sender.
Jim Butcher
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wdaniell.longport(at)gmai
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| Posted: Fri Mar 09, 2018 6:03 am Post subject: Back instruments |
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Jim
Yup the VDO one is resistive but the Kavlico that Dynon sells one is voltage.
Incidentally VDO also sells dual output oil pressure senders and dual output temperature senders. As I understand it all thermocouple senders for the same rages are electrically equivalent so in theory a 0/300 dual output sender would be identical output to 0/300 single output. Can anyone tell what thread the rotax uses for its temperature senders. ACS says it is 10mm and a "normal" as opposed to NPT thread. Is this correct?
Will
William Daniell
LONGPORT
+57 310 295 0744
On Fri, Mar 9, 2018 at 7:16 AM, h&jeuropa <butcher43(at)att.net (butcher43(at)att.net)> wrote:
| Quote: | --> Europa-List message posted by: "h&jeuropa" <butcher43(at)att.net (butcher43(at)att.net)>
Will,
I have disassembled the VDO oil pressure sender that comes standard on a Rotax 914. It is a resistive sender.
Jim Butcher
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=478519#478519
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h&jeuropa
Joined: 07 Nov 2006
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| Posted: Fri Mar 09, 2018 12:33 pm Post subject: Re: Back instruments |
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Will,
The VDO temp sender uses M10x1.5 thread.
Jim Butcher
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wdaniell.longport(at)gmai
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| Posted: Fri Mar 09, 2018 1:03 pm Post subject: Back instruments |
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Jim
Thanks - I will provide an update once I have finished
William Daniell
LONGPORT
+57 310 295 0744
On Fri, Mar 9, 2018 at 3:33 PM, h&jeuropa <butcher43(at)att.net (butcher43(at)att.net)> wrote:
| Quote: | --> Europa-List message posted by: "h&jeuropa" <butcher43(at)att.net (butcher43(at)att.net)>
Will,
The VDO temp sender uses M10x1.5 thread.
Jim Butcher
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=478527#478527
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eferrer" target="_blank">http://forums.matronics.com
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errer" target="_blank">http://wiki.matronics.com
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b Site -
-Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
====================================
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