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'OEM Pressure Sensors'
1999\06\06@002914 by Ed Edmondson

picon face
Try Lucas/Varity at http://www.novasensor.com.  Lucas NovaSensor has a model NPP-301
very low cost series pressure sensor for automotive, medical, industrial and
consumer products.  These sensors are in very small SMD packages and they are
offering free samples.  The had an ad in the April 99 issue of Sensors
magazine on page 6.

Dr. Ed

1999\06\06@022948 by Donald Riedinger

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www.novasensor.com said:

Your request for the NPP-301 Design Kit has been forwarded to a
NovaSensor representative. You should receive the design kit in the
mail soon!

-------------------

Thanks Dr. Ed

We were once going to use the Motorola parts to weigh chicken eggs (S,
M, L, XL) with a balloon connected to the the port.  Previously they
used go-no-go mechanical balances in series.

Don

1999\06\06@050456 by Donald Riedinger

picon face
www.novasensor.com said:

Your request for the NPP-301 Design Kit has been forwarded to a
NovaSensor representative. You should receive the design kit in the
mail soon!
----------------

Thanks Dr. Ed

We were once going to use the Motorola parts to weigh chicken eggs (S,
M, L, XL) with a balloon connected to the the port.  At that time they
used go-no-go mechanical balances in series.  144 mechanical balances.
The new machines coming out in '83 had 12 load cell analog scales.

Don

1999\06\06@115529 by Wagner Lipnharski

picon face
Hey Don, eggs weight is not directly proportional to size? I think the
S, M, L and XL mean first size than weigth, isn't?

A simple series of size escape vents in a roller track would not do it?
Like the coin separator in coin machines?  In some way, apples and other
fruits are separated by size using mechanic solutions like that. Optical
height devices could trigger magnets arms to separate the eggs by size
too, or change its direction path...

I already saw a rotor system, with some kind of rings in different sizes
from big to small (in sequence), each one trying to get the fruit and
move to a different belt (one belt per ring), so if the apple is big
enough to be caugh by the first big ring, it is moved to that belt, if
not, the apple slip into the ring and goes to the second ring, smaller,
and so on...

Soft drink production line (12oz cans) use a special radiation to
measure if the cans have at least certain level of liquid after been
filled, if not they are knocked out of the line. Some other systems use
weight measurement but it is not that fast and accurate as measuring the
liquid height.

Wagner.

>
> We were once going to use the Motorola parts to weigh chicken eggs (S,
> M, L, XL) with a balloon connected to the the port.  At that time they
> used go-no-go mechanical balances in series.  144 mechanical balances.
> The new machines coming out in '83 had 12 load cell analog scales.
>
> Don

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