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Analog Volt Meter

 
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mike(at)vision499.com
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PostPosted: Sun May 27, 2018 7:43 pm    Post subject: Analog Volt Meter Reply with quote

Does anybody know where I can get a small analog volt meter about the same size as the UMA from aircraft spruce but at a better price?
               
http://www.aircraftspruce.ca/catalog/inpages/uma_instr9.php?clickkey=13200

Thanks

Mike





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ceengland7(at)gmail.com
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PostPosted: Sun May 27, 2018 8:30 pm    Post subject: Analog Volt Meter Reply with quote

https://www.ebay.com/bhp/analog-panel-meter

Charlie
On May 27, 2018, at 10:47 PM, mike(at)vision499.com (mike(at)vision499.com) wrote:
Quote:

Does anybody know where I can get a small analog volt meter about the same size as the UMA from aircraft spruce but at a better price?

http://www.aircraftspruce.ca/catalog/inpages/uma_instr9.php?clickkey=13200



Thanks



Mike






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mike(at)vision499.com
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PostPosted: Mon May 28, 2018 8:24 am    Post subject: Analog Volt Meter Reply with quote

Thanks for the link, but all the meters I can find on e-bay are at least 2 inches and I was looking for something smaller

Thanks

Mike

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Charlie England
Sent: May 27, 2018 9:30 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: Analog Volt Meter

https://www.ebay.com/bhp/analog-panel-meter

Charlie

On May 27, 2018, at 10:47 PM, mike(at)vision499.com (mike(at)vision499.com) wrote:
Quote:

Does anybody know where I can get a small analog volt meter about the same size as the UMA from aircraft spruce but at a better price?

http://www.aircraftspruce.ca/catalog/inpages/uma_instr9.php?clickkey=13200

Thanks

Mike







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kuffel(at)cyberport.net
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PostPosted: Mon May 28, 2018 9:11 am    Post subject: Analog Volt Meter Reply with quote

Mike,

<< small analog volt meter about the same size as the UMA from aircraft spruce but at a better price?<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> >>

If you can stand an industrial look instead of an aircraft look, Mouser Electronics 529-17843 is a Simpson 1.5 inch square 0-15 volt meter for $96. 1.15 and 2.5 inch meters are about the same price.

Tom Kuffel

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ceengland7(at)gmail.com
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PostPosted: Mon May 28, 2018 9:48 am    Post subject: Analog Volt Meter Reply with quote

On 5/28/2018 12:11 PM, The Kuffels wrote:

Quote:
Mike,
 
<<  small analog volt meter about the same size as the UMA from aircraft spruce but at a better price?  >>
 
If you can stand an industrial look instead of an aircraft look, Mouser Electronics 529-17843 is a Simpson 1.5 inch square 0-15 volt meter for $96.  1.15 and 2.5 inch meters are about the same price.
 
Tom Kuffel

And if you can give up the analog requirement (and gain a lot of accuracy), there are many digital options with under $20 price points.
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wdaniell.longport(at)gmai
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PostPosted: Mon May 28, 2018 9:55 am    Post subject: Analog Volt Meter Reply with quote

I bought a hall effect ammeter combined with a voltmeter from Amazon for USD24.  It's digital.  Its readings are the same as my Dynon which was a tad more expensive.  
Will

William Daniell

LONGPORT
+57 310 295 0744


On Mon, May 28, 2018 at 12:48 PM, Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
Quote:
On 5/28/2018 12:11 PM, The Kuffels wrote:

Quote:
Mike,
 
<<  small analog volt meter about the same size as the UMA from aircraft spruce but at a better price?  >>
 
If you can stand an industrial look instead of an aircraft look, Mouser Electronics 529-17843 is a Simpson 1.5 inch square 0-15 volt meter for $96.  1.15 and 2.5 inch meters are about the same price.
 
Tom Kuffel

And if you can give up the analog requirement (and gain a lot of accuracy), there are many digital options with under $20 price points.

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echristley(at)att.net
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PostPosted: Mon May 28, 2018 3:22 pm    Post subject: Analog Volt Meter Reply with quote

Marlin Jones has a good selection:
Panel Meters & Meter Shunts | MPJA.COM
<![endif]--> <![endif]-->
<![endif]--> Panel Meters & Meter Shunts | MPJA.COM


On Sunday, May 27, 2018 11:44 PM, "mike(at)vision499.com" <mike(at)vision499.com> wrote:



Does anybody know where I can get a small analog volt meter about the same size as the UMA from aircraft spruce but at a better price?

http://www.aircraftspruce.ca/catalog/inpages/uma_instr9.php?clickkey=13200

Thanks

Mike





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racerjerry



Joined: 15 Dec 2009
Posts: 183
Location: Deer Park, NY

PostPosted: Tue May 29, 2018 2:40 am    Post subject: Re: Analog Volt Meter Reply with quote

Mike, be careful what you wish for. From my experience, 0 to 15V voltmeters of ANY size are near useless for monitoring the aircraft battery voltage and the charging system in flight. A compressed scale type voltmeter like Westach 2A5, which provides a scale of 6 to 16 volts (or the UMA 9 to 17V), offer better information with ability to distinguish minor voltage fluctuations. With a standard full scale, the distance of needle movement between a properly functioning charging system and normal battery voltage is minimal.

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nuckolls.bob(at)aeroelect
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PostPosted: Tue May 29, 2018 7:18 am    Post subject: Analog Volt Meter Reply with quote

At 05:40 AM 5/29/2018, you wrote:
Quote:
--> AeroElectric-List message posted by: "racerjerry" <gnking2(at)verizon.net>

Mike, be careful what you wish for. From my experience, 0 to 15V voltmeters of ANY size are near useless for monitoring the aircraft battery voltage and the charging system in flight. A compressed scale type voltmeter like Westach 2A5, which provides a scale of 6 to 16 volts (or the UMA 9 to 17V), offer better information with ability to distinguish minor voltage fluctuations. With a standard full scale, the distance of needle movement between a properly functioning charging system and normal battery voltage is minimal.

Agreed. For a voltmeter to be REALLY useful, it
should focus on the spectrum of interest. You have
zero interest in voltages below 10v or above 15v.


Back in the not so dark ages, we offered a voltmeter/
loadmeter combo featuring a dual pointer instrument
that was custom made for us by Westach. Their product
was mostly okay . . . but about 10% of the goods were
unusable right out of the box. Tried to get warranty
replacements but they said, "sorry, you've had that
instrument for more than 90 days."


[img]cid:.0[/img]


Had to discontinue that offering. Another attempt
to address miniature 'steam gage' loadmeters was
launched with this product.

[img]cid:.1[/img]


. . . and we fiddled with the notion of creating
a single pointer, dual scale instrument in the same
package.

[img]cid:.2[/img]

It didn't seem to be a very viable project since
these functions were being covered by most of the
digital do-everything instruments coming into the
market.

This is an example of what Jerry is talking about
for the expanded scale voltmeter.



Bob . . .


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kenryan



Joined: 20 Oct 2009
Posts: 301

PostPosted: Tue May 29, 2018 8:20 am    Post subject: Analog Volt Meter Reply with quote

It seems to me that if ever there was an instance where a digital gauge is clearly superior to analog, it would be a volt meter, where fine resolution and accuracy are a must for monitoring the system.

Sent from my Android. Sorry Steve.
On Tue, May 29, 2018, 02:45 racerjerry <gnking2(at)verizon.net (gnking2(at)verizon.net)> wrote:

Quote:
--> AeroElectric-List message posted by: "racerjerry" <gnking2(at)verizon.net (gnking2(at)verizon.net)>

Mike, be careful what you wish for.  From my experience, 0 to 15V voltmeters of ANY size are near useless for monitoring the aircraft battery voltage and the charging system in flight.  A compressed scale type voltmeter like Westach 2A5, which provides a scale of 6 to 16 volts (or the UMA 9 to 17V), offer better information with ability to distinguish minor voltage fluctuations.  With a standard full scale, the distance of needle movement between a properly functioning charging system and normal battery voltage is minimal.

--------
Jerry King




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PostPosted: Tue May 29, 2018 9:12 am    Post subject: Analog Volt Meter Reply with quote

At 11:19 AM 5/29/2018, you wrote:
Quote:
It seems to me that if ever there was an instance where a digital gauge is clearly superior to analog, it would be a volt meter, where fine resolution and accuracy are a must for monitoring the system.

This was a frequent discussion amongst
pilots, engineers and marketing folks at
various tenures in TC aircraft.

There was a school of thought promoting
instrumentation that would quickly flag
a trend. For example, suppose all your 2"
gages in a multi-engine aircraft were
oriented such that 'normal' orientation
was in some consistent 'clocking' . . .
say 10-o'clock. A crew member conducting
a scan of the panel did not have to pause,
perceive, interprets and make a judgement
on every displayed parameter. One could
quickly some value that was not in visual
lockstep with the rest of the systems.

Digital displays off no such advantage.
Then we had combo displays . . . bar graphs
with adjacent digits. Hmmm . . . better but
still pretty cluttered.

Most of us learned to fly steam gages in
SETC aircraft. There was no attempt to
'clock' the gages but given that there were
few gages, it didn't take many hours of
hood or cloud time to develop a mental image
of normal displays . . . along with a refined
awareness of readings that were not normal.

For the most part, flight crew has little
interest in the fine details of system
numbers. The guys that need that kind of
detail are repair technicians . . . who
have the benefit of additional test equipment
and diagnostic tools . . . on the ground.

Then there's the matter of panel space. I
wrote the spec and helped select a vendor
for a customized, multi-channel, digital
display that would let the crew watch any
of serveral parameters of interest in detail.
Values not being observed were monitored and thrown
on the screen in detail when they ventured
outside normal limits. This went into the
first Gates-Piaggio 180s.

There are strong arguments for both kinds
of displays . . . but for different goals.
Keeping it graphic-and-simple in the air
goes to minimizing opportunity for error
in stressful situations . . . like single
pilot IFR . . . strange noises . . . icing
. . . etc.



Bob . . .


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racerjerry



Joined: 15 Dec 2009
Posts: 183
Location: Deer Park, NY

PostPosted: Wed May 30, 2018 3:02 am    Post subject: Re: Analog Volt Meter Reply with quote

Yes, I 'clocked' the gauges in the race car for instant recognition of an unusual event. Even so, I found I also needed a BIG red oil pressure light to get my attention. Many/most aircraft analog gauges are mounted with 4 screws which makes clocking impractical.

Anyway, even with the compressed scale voltmeter, when charging system problems arose in flight, my first noticed indication was usually a fading display on my VHF radio. Not a biggie for me in my old 172K, because I generally stay out of class D & C airspace and only must save radio for last minute landing announcement and prepare for a no-flap landing.

Having ANALOG gauges that require no electrical power is a big plus too.

However, like the oil pressure light, charging system problems (and forgetting to turn darned master off) happen to me often enough that I needed to install a low voltage warning light to get my attention before battery power was depleted.

I chose Eric Jones 13 Volt Idiot Light. Mounted the light on a tiny aluminum angle which is Velcroed to top of my glare shield and pointed right at my eyeball to get my attention. WORKS GREAT! Furthermore, it's powered through the cigarette lighter and requires no approvals / paperwork install when connected this way, even on a certified aircraft.


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