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914 Coolant temp & Dynon EMS-D10

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Fergus Kyle

Joined: 03 Jun 2007
Posts: 291
Location: Burlington ON Canada

Posted: Tue Sep 30, 2008 8:29 am Post subject: 914 Coolant temp & Dynon EMS-D10

Cheers, 

	I have begun to apply a dedicated 5Vdc line to a coolant sensor for 

my 914.  I am using a Dynon EMS-D10 display for engine parameters and 

wonder what sensor you use to accomplish this......... According to the 

Dynon manual I can use GP#3 function (pin 23 - purple/green) - page 2-12

AND GP#3 function (pin 18 -white/red) -page 2-16.

	Confusion - what am I missing? - aside from gray matter.

	If you have this combination, what did you do?

In hope,

Ferg Kyle

Europa A064 mono

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hdwysong

Joined: 06 Jun 2008
Posts: 21

Posted: Wed Oct 01, 2008 10:13 pm Post subject: 914 Coolant temp & Dynon EMS-D10

 	  Quote: 	
		   Cheers,

        I have begun to apply a dedicated 5Vdc line to a coolant sensor for

 my 914.  I am using a Dynon EMS-D10 display for engine parameters and

 wonder what sensor you use to accomplish this......... According to the

 Dynon manual I can use GP#3 function (pin 23 - purple/green) - page 2-12

 AND GP#3 function (pin 18 -white/red) -page 2-16.

        Confusion - what am I missing? - aside from gray matter.

        If you have this combination, what did you do?


	


We're using a UMA 1B1 1/8" NPT probe with our MGL RDAC to measure 914

coolant temps, Ferg.



It's a 2-wire device with an isolated case, but if you pull one of the

wires to ground it will can be wired like the figure on 3-16 of your

installation manual (or like the figure on 3-13) using the +5V

excitation (pin 1 and the GP input (pin 23) you noted.



Pull one of the sender wires to ground.   Pull the other sender wire

through a "Y" to pin 23 and to pin 18 via the pullup resistor.  The 1K

pullup should be adequate but it's worth a call to Dynon to verify

once you decide which sender to go with.  If you need the calibration

curve (Ohms vs temp) for the UMA sender just send me an email.  We had

to pry the data out of 'em since the curve didn't come with the

sender.



D

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