[Gasification] Reinventing wheels, and fans!
Pete&Sheri
spaco at baldwin-telecom.net
Sun Nov 14 08:53:47 CST 2010
Here is one of several links to bypass style vacuum motors.
http://www.electricmotorwarehouse.com/Dayton/ametek/ametek_b.htm
I Googled:
ametek lamb bypass vacuum motors
to get to it.
Ametek and Lamb are the brands we used 'way back then.
I don't think we actually needed the bypass style in one machine we
built, but they are quieter than the air-through style. In our largest
machine, an electron microscope turned backwards to write on microfilm,
we had 3 roughing pumps, several cooling blowers and 4 of the simple
Lamb air-through vacuum motors running at the same time, 24 hours a
day. It was so noisy that a few extra vacuum motors didn't matter. Off
topic, but the machine comsumed 5 1/2 KW of 3 phase 208 to produce a
one microamp beam at 20,750 volts.
In another stand alone machine (that copied microfilm to microfiche)
that was usually located in a separate room, noise was an issue, so we
used the bypass vacuum motors.
Pete Stanaitis
----------------
Mark Ludlow wrote:
>Got and literature or pictures, Pete? Or current URLs?
>Thanks, Mark
>
>-----Original Message-----
>From: gasification-bounces at lists.bioenergylists.org
>[mailto:gasification-bounces at lists.bioenergylists.org] On Behalf Of
>Pete&Sheri
>Sent: Saturday, November 13, 2010 4:56 PM
>To: Discussion of biomass pyrolysis and gasification
>Subject: Re: [Gasification] Reinventing wheels, and fans!
>
>At least a couple of mfrs make "bypass" style vaccuum motors. 'Way
>back in the 1970's we used them for loop boxes on tape and film handling
>systems. IIRC, some of them were capable of around 12" WC compared with
>the "through" models that could do 19" WC. Not 12VDC, of course.
>
>Pete Stanaitis
>
>
>
>
>
>
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