What are "Microns"

Guy's I keep reading about this fuel filter screen will catch trash as small as "130 Microns"..
My question is what measurement is a "micron"??
Thanks again....... Gil

>
> Guy's I keep reading about this fuel filter screen will
>catch trash as small as "130 Microns"..
> My question is what measurement is a "micron"??

One one-millionth of a meter.

As I understand it a "Micron" is 1000th part of a millimetre or 2/ 10000th parts of an inch. Could stand to be corrected.

jonuck

LAST EDITED ON Dec-05-04 AT 02:51 PM (CST)
 
Per Dictonary.com "mi·cron also mi·kron ( P ) Pronunciation Key (mkrn) n. pl. mi·crons or mi·cra (-kr) also mi·krons or mi·kra (-kr)
A unit of length equal to one millionth (10 to the minus 6th power) of a meter. No longer in technical use. From Greek mkron, neuter of mkros, small." What else? Steve

Both are correct. One 1,000 of a millimeter Is one millionth of a meter.

Micrometer is the same as Micron.

Have they changed the name of the tool known as the micrometer?

A micrometer, the expensive G clamp, is still a micrometer.

However a micrometre is an itsy bitsy, teeny weeny part of a metre, a unit of linear measurement devised by you-know-who.....

1 Micron = 1 millionth of a meter, or approx. 3.9 x 10 -5 inches.

Your example of 130 microns equates to about 5 thousandths of an inch, which is about in the range of a 100 mesh (0.006") screen (very fine) for a plumbing strainer.

For a comparison, a HEPA air filter will filter 99.97% of particles at 0.3 microns.

130 microns is not very small as far as a filter goes. Dump the powder out of a firecracker and look at the aluminum powder inside. The aluminum powder is 400 mesh. It will go right through a 130 micron filter. I guess it depends on what you are filtering.

Well yes, Gary - most plumbing is not particularly precise, but it is on the very-fine end of normal process water or steam filtration (not drinking water).

As with most things, there is a price: better filtration comes at the expense of a higher pressure drop, and more nuisance in fouling the strainer. What those goals mean at model airplane dimensions, I don't know. I just buy a Du-Bro or Great Planes filter - preferrably the kind that can be taken apart and flushed - and f'gitabowdit.

LAST EDITED ON Dec-05-04 AT 07:13 PM (CST)
 
Oops.

Short answer...... crons that you own. (Possessive form)

Teeny Weeny

I think more like itsy bitsy. Thats half of a teeny weeny.

I found it interesting that the dot com dictionary said the micron was no longer in technical use. Guess I don't have to go to work tomorrow and make sure that 2 dozen photo lithography tools are running in spec and cranking out devices with features in the sub .16 micron range.

Whoo-hoo, more time to fly! But wait- no more paycheck , guess I better go in anyway.

>I found it interesting that the dot com dictionary said the
>micron was no longer in technical use.

Not much of a dictionary! Probably also say the same of pounds and inches.

My guess
You want a screen that will catch anything big enough to lean your mixture and pass the rest.
But! it aint that simple
Things can build on your filter screen and (gum ,lint ect.) and cause what you are trying to prevent.The filter will pass fuel ,but not enough.
I use a gallon Fuel Caddy(dave brown) filled with alcohol and equipped
with filters to flush my tanks and filters before storing my planes for a while.
Also not enough oil in your fuel will give symptoms similar to a fuel
stravation problem.(leaning out about halfway thru the pattern.
A defective tank can do this too!
Thats what makes this hobby so much fun.

Jeopardy question for $.99. What is it going to take to make this thread break the 100+ record for nearly useless information? Steve

Well if I wrote something like this...

It's a 1000 Texans out standing in the rain.
OR
How many Paul Walker will beat this year
OR
But I wouldn’t do that}>

Scott( OH Microns… not morons) Riese:*

More posts like this one, assuming the thread doesn't get locked to ally the aggravation that is caused by each new post's bumping the thread to the top of the topic list.

I wonder if that would be the same aggravation that those of us who read the classifieds experience when we see the "bumps" by the handle warriors.

>More posts like this one, assuming the thread doesn't get
>locked to ally the aggravation that is caused by each new
>post's bumping the thread to the top of the topic list.
>
>I wonder if that would be the same aggravation that those of
>us who read the classifieds experience when we see the
>"bumps" by the handle warriors.
>
>

Now your sounding like Dirt Dan!!

And how does that equate to a tad or a smidgin?

Tad is just a little bigger than a RCH.

how many microns in a mill?

LAST EDITED ON Dec-06-04 AT 07:14 PM (CST)
 
Well before we go too far making fun of this thread, maybe somebody should do some work. Other than Charlie Pate in Post #14, no one really tried to offer some useful advice. I think we burned the definition of microns pretty good, but what's the useful scoop?

Anybody done any real testing with our typical fuel filter screens and have a good idea of the following:

1. Screen size vs. protection effects,
2. Screen size vs. pressure drop that can affect draw, and
3. Screen size vs. nuisance fouling?

Just a thought ...