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EIS 6000 question

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Im7shannon(at)AOL.COM
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Posted: Sat Jun 14, 2008 9:54 pm Post subject: EIS 6000 question

Hi

 Regarding the GRT EIS 6000/4000 could anyone tell me what scale factor and  offset limit values you used for your fuel pressure sender?

 Thanks

 Kevin Shannon

 Taxi testing the rocket tomorrow



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  [quote][b]

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Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Sun Jun 15, 2008 5:24 am Post subject: EIS 6000 question

Those numbers should be on a sheet that came with the sensor.

I'd give you mine, but one of my two sensors (The High

pressure one) was not the original cheap one that GRT sells, but

their more premium "Stainless Steel High Pressure Sensor",

which uses a different SF and OFF.   I am not sure if that

was oil pressure or fuel pressure for that sensor though.

But either way, they have sheets for both sensor types that

show the info.



For the cheap VDO 80 and 150, this is what it says:

Set AuxSF to 182 for 150 psi sender, 91 for 80 psi sender

Set AuxOff to 29 for 150 psi sender, 15 for 80 psi sender

Set Aux Sensing to normal (+) on Options page



If the auxiliary input includes a decimal point, the pressure

displayed will be 1/10 of actual.  For example, 35 psi

will be displayed as 3.5 psi.



If you don't have these sheets, I'd get them to send them to you.

Tim Olson - RV-10 N104CD - Flying

do not archive

Im7shannon(at)aol.com wrote:

 	  Quote: 	
		   Hi

 Regarding the GRT EIS 6000/4000 could anyone tell me what scale factor 

 and offset limit values you used for your fuel pressure sender?

 Thanks

 Kevin Shannon

 Taxi testing the rocket tomorrow

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bcondrey

Joined: 03 Apr 2006
Posts: 580

Posted: Sun Jun 15, 2008 7:56 am Post subject: Re: EIS 6000 question

For the stainless steel high pressure fuel sender (what GRT recommends for FI engines), the SF is 63 and OFF is 51.  Be aware however that there's a minor calibration procedure to set the zero level.  As I recall this involves having zero PSI (open the mixture to guarantee this) and then setting the OFF as appropriate.  They want this done with the ambient air temp around 72 degrees F.



Bob

N442PM

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Tim Olson

Joined: 25 Jan 2007
Posts: 2881

Posted: Sun Jun 15, 2008 8:28 am Post subject: EIS 6000 question

That's the one I have....the SF is 63, but it doesn't just list the OFF

as 51 on my sheet, it says:



Calibrate as follows.  Set AuxOff to 0.  Be sure no pressure

is applied to the sensor.  Note the auxiliary display.

The sensor is operating properly if the aux display is between 20-30

or 2.0-3.0 for aux displays with a decimal point.



If the aux display includes a decimal point, multiply the

reading by 20 and subtract 1.  Pressure will be displayed as

1/10 of actual.



If the aux display does not have a decimal point, multiply the

reading by 2 and subtract 1.  Pressure will be displayed as

actual, in units of PSI.

(There is a little more text there that I left out, but it

doesn't seem it gives the exact number)

I believe my offset was set at 47.  So while you may

be able to get the SF set, I think you have to calculate

the Offset on your individual sensor.



The rest is my other post....just without the "do not arkive"

thing on the end.

------



Those numbers should be on a sheet that came with the sensor.

I'd give you mine, but one of my two sensors (The High

pressure one) was not the original cheap one that GRT sells, but

their more premium "Stainless Steel High Pressure Sensor",

which uses a different SF and OFF.   I am not sure if that

was oil pressure or fuel pressure for that sensor though.

But either way, they have sheets for both sensor types that

show the info.



For the cheap VDO 80 and 150, this is what it says:

Set AuxSF to 182 for 150 psi sender, 91 for 80 psi sender

Set AuxOff to 29 for 150 psi sender, 15 for 80 psi sender

Set Aux Sensing to normal (+) on Options page



If the auxiliary input includes a decimal point, the pressure

displayed will be 1/10 of actual.  For example, 35 psi

will be displayed as 3.5 psi.



If you don't have these sheets, I'd get them to send them to you.



Tim Olson - RV-10 N104CD - Flying



bcondrey wrote:

 	  Quote: 	
		   

 <bob.condrey(at)baesystems.com>

 

 For the stainless steel high pressure fuel sender (what GRT

 recommends for FI engines), the SF is 63 and OFF is 51.  Be aware

 however that there's a minor calibration procedure to set the zero

 level.  As I recall this involves having zero PSI (open the mixture

 to guarantee this) and then setting the OFF as appropriate.  They

 want this done with the ambient air temp around 72 degrees F.

 

 Bob N442PM

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bcondrey

Joined: 03 Apr 2006
Posts: 580

Posted: Sun Jun 15, 2008 1:30 pm Post subject: Re: EIS 6000 question

I don't have the sheet in front of my but Tim's info sounds right.  I was simply providing my settings.  They may or may not work for you;  My initial fuel sender used these numbers and after a couple of hours failed.  GRT was great and shipped me another one immediately and coincidently it used the same OFF calibration.



Bob

N442PM

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