Hi Mauro,

I'd now think you are correct, in the aspect of the LVDT coils
likely being made just for the seismo unit; just from the aspect
of the NE, being a large organization/company.

I do wonder what the size/diameter of the ferrite rod that
comes with the LVDT and circuit?  Suspect its quite "loose"
clearance (~ 1-2 mm?) on any side.  In the same sense, I
wonder what the dimension/s are of the transformer hole/s?
In ways, it seems possible that a tighter (larger) fitting ferrite
rod might enhance the sensitivity somewhat....but not likely
really needed at all.

Take care, Meredith Lamb

Mauro Mariotti wrote:

>  Hi Meredith,the lx1358 circuit is exactly the same used in the lx922
> with fewsmall variations.The LX922 and LX1358 coils are the same.I
> think that the coils are wound for the pourpose of the seismometerand
> not re-used from an another application.They are very large to make
> easier the assembly of the mechanic.That squared hole keep easy the
> assembly of the nucleus that isneeded to insert for last when you
> assemble the mechanic components. RegardsMauro



Hi Mauro,
I'd now think you are correct, in the aspect of the LVDT coils

likely being made just for the seismo unit; just from the aspect

of the NE, being a large organization/company.
I do wonder what the size/diameter of the ferrite rod that

comes with the LVDT and circuit?  Suspect its quite "loose"

clearance (~ 1-2 mm?) on any side.  In the same sense, I

wonder what the dimension/s are of the transformer hole/s?

In ways, it seems possible that a tighter (larger) fitting ferrite

rod might enhance the sensitivity somewhat....but not likely

really needed at all.
Take care, Meredith Lamb
Mauro Mariotti wrote:
 Hi Meredith,the
lx1358 circuit is exactly the same used in the lx922 with fewsmall variations.The
LX922 and LX1358 coils are the same.I think that the coils are wound for
the pourpose of the seismometerand not re-used from an another application.They
are very large to make easier the assembly of the mechanic.That squared
hole keep easy the assembly of the nucleus that isneeded to insert for
last when you assemble the mechanic components. RegardsMauro