PSN-L Email List Message

Subject: Re: Re. Seismometer Distance Transducer
From: meredithlamb meredithlamb@.............
Date: Wed, 01 Jan 2003 15:33:55 -0700


Hi Chris and all,

Although I've not had any actual experience with LVDT's and their
circuits; it appears that your reference to the NE design and/or
your modifications look to be very highly encouraging for their
use in more precision instrumentation by amateurs.  Thanks for
all the work you've done!!!  I'd hazard to guess that with such,
one might find a really reasonably low priced sensor and
accurate assembly that has been not really obtainable heretofore!

About the only question of a general nature, I can find to ask
is that regarding the shielding of the LVDT unit.  Roughly, what
do you use; or would suggest in either the minimum or maximum
sense?  Would say, specific shielding surrounding  the LVDT
board itself might be in itself somewhat adequate; as alot of
amateur seismo's are often rather huge?

Take care, Meredith Lamb

ChrisAtUpw@....... wrote:

> Hi all seis experimenters,
>
>      John Lahr has very kindly put my notes on the LVDT precision
> seismic sensor Kit on his Website at:
> http://jjlahr.com/science/psn/chapman/lvdt/
>
> clipped......


Hi Chris and all,

Although I've not had any actual experience with LVDT's and their
circuits; it appears that your reference to the NE design and/or
your modifications look to be very highly encouraging for their
use in more precision instrumentation by amateurs.  Thanks for
all the work you've done!!!  I'd hazard to guess that with such,
one might find a really reasonably low priced sensor and
accurate assembly that has been not really obtainable heretofore!

About the only question of a general nature, I can find to ask
is that regarding the shielding of the LVDT unit.  Roughly, what
do you use; or would suggest in either the minimum or maximum
sense?  Would say, specific shielding surrounding  the LVDT
board itself might be in itself somewhat adequate; as alot of
amateur seismo's are often rather huge?

Take care, Meredith Lamb

ChrisAtUpw@....... wrote:

Hi all seis experimenters,

     John Lahr has very kindly put my notes on the LVDT precision seismic sensor Kit on his Website at:
http://jjlahr.com/science/psn/chapman/lvdt/

clipped......


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