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Yeah, Chris, I really hate when and instrument does
that - if it breaks you can find the problem and fix it - but, this intermittent
stuff just drives you crazy - because about the time you put it on the bench and
break out the soldering iron - the dang thing works fine.
Fortunately the EM2 is not flight critical - although I
personally would not like to fly without my monitor.
Ed
Sent: Friday, February 10, 2012 3:50 PM
Subject: [FlyRotary] Re: EM2 was one more thing
I so looove this hobby. Got out to the hangar today and the EM2 came
right up properly. Shhhhhesh.
Sent from my iPhone 4
It's not just ground continuity that is important, it is routing of the
ground circuit, especially on composite aircraft.. But your
problem may be just a broken EM2 since it was working before. Tracy
On Thu, Feb 9, 2012 at 6:48 PM, Chris Barber <cbarber@texasattorney.net>
wrote:
Grounds already checked. It is my first task these days. Thanks.
Sent from my iPhone 4
Check all gounds for that
unit.
Brian Trubee
Sent: Thu, Feb 9, 2012 2:31 pm
Subject: [FlyRotary] EM2
was one more thing
Well, Murphy must have a corner on my hangar. During a brief engine
run today everything was fine. I added a little power to bump the catering
nose wheel around and my EM2 lost all it's information and started
displaying sporadically flashing rows of blocks and lines, then
occasionally several numeral "5"s. Tried pushing buttons. Cycled circuit
breaker. Turned ships Power on and off. No Joy. I still have my Dynon
EFIS/monitor but the RWS unit is playing games. The engine is currently
running fine. Turned it off and on as well too
Whoops, now I see "2"'s inside some of the flashing
blocks.
Ideas please.
Chris
Sent from my iPhone 4
Tracy,
On the topic of EGT's, I am using your engine monitor in
conjunction with my Dynon engine monitor. I has some problems with the
RWS EGT reading do I am letting the Dynon monitor the EGT's.
I wrote asking about a way to disable the EGT readings on the RWS
monitor. You suggested connecting the EGT leads together. However, this
did not work. Any other ideas? I am quite close to flying, I hope
so I would prefer not to have to send it in if possible and may wait
till after trying to gly as the Dynon gives redundancy, but obviously
does little for tuning.
Thanks.
Chris Barber
Houston
Sent from my iPhone 4
The EGT channels should be pretty accurate over the full
range. Less calibration for these is necessary because a temp
compensated thermocouple interface chip is used in the EM2/3.
The EGT bar graphs are the only thing that don't read
below 1000 deg. Temps below that are not significant (for
EGT). The bargraph can then have higher resolution over the
range of interest. Tracy
On Wed, Feb 8, 2012 at 11:27 PM, <bktrub@aol.com> wrote:
The egt can't read anything below around 800-1000
accurately f if I recall correctly. I don't recall
exactly, but it's several hundred degrees, maybe as low as 180 or so
when the engine is ambient- around 50 today.
Brian Trubee
-----Original
Message----- From: Bill Bradburry < bbradburry@bellsouth.net> To: Rotary motors
in aircraft < flyrotary@lancaironline.net> Sent: Wed, Feb
8, 2012 8:17 pm Subject: [FlyRotary] Re: one more thing
Speaking of
EGT calibration. If the EGT reads ambient air temps
accurately, does that mean that it is accurate throughout its
range??? If not, how do you check the temp when it is reading
15-1600 degrees??
Bill B
Also, I forgot to
mention- in looking at the calibration for my EGTs I have the same
settings for both- Scale factor is 1.943 and the low end offset is
38. Is this the correct factory setting?
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