PSN-L Email List Message

Subject: Re: WinQuake Times
From: Barry Lotz barry_lotz@.............
Date: Thu, 12 Nov 2009 06:04:05 -0800 (PST)


Mark
I found a company called Sensr that sells 3 different data acquisition syst=
ems for $700 up. Not really that bad when it includes a 3 axis and storage.
=A0http://www.sensr.com/products/civil-and-structural/
Regards
Barry


--- On Wed, 11/11/09, Mark Robinson  wrote:

From: Mark Robinson 
Subject: Re: WinQuake Times
To: psn-l@..............
Date: Wednesday, November 11, 2009, 8:25 PM

ChrisAtUpw@....... wrote:
> In a message dated 11/11/2000, gmvoeth@........... writes:
>=A0 =A0=A0=A0If the MEMS were 1000 times more sensitive
>=A0 =A0=A0=A0then that means 2G+/- becomes 0.002G+/-
>=A0 =A0=A0=A0And I bet that HP being an American company that
>=A0 =A0=A0=A0does not like competition between companies
>=A0 =A0=A0=A0( only competition between workers)
>=A0 =A0=A0=A0will charge X1000 whatever the old ones were :-)
>=A0 =A0=A0=A0This means only 1/1000 the amateurs will
>=A0 =A0=A0=A0be able to afford them.
>=20
> Hi Geoff,
>=A0 =A0=A0=A0The good news is that HP don't make them.
>=A0 =A0=A0=A0See http://www.colibrys.com/e/page/140/

Are my calculations indicating a noise level of 1 milli-gravity at a period=
 of 10,000,000 seconds correct ?

That's just scary.

Dare I wonder how much these things cost ?

Cheerio
Mark

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Public Seismic Network Mailing List (PSN-L)

Mark
I found a company called Sensr that s= ells 3 different data acquisition systems for $700 up. Not really that bad = when it includes a 3 axis and storage.
 http://www.sensr.com/produc= ts/civil-and-structural/
Regards
Barry


--- On Wed, 11/1= 1/09, Mark Robinson <mark.robinson@...............> wrote:=

From: Mark Robinson <mark.robinson@para= dise.net.nz>
Subject: Re: WinQuake Times
To: psn-l@..............<= br>Date: Wednesday, November 11, 2009, 8:25 PM

ChrisAtUpw@....... wrote:
> In a message dated 11/= 11/2000, gmvoeth@........... writ= es:
>     If the MEMS were 1000 times more sensit= ive
>     then that means 2G+/- becomes 0.002G+/-=
>     And I bet that HP being an American compan= y that
>     does not like competition between co= mpanies
>     ( only competition between workers)=
>     will charge X1000 whatever the old ones we= re :-)
>     This means only 1/1000 the amateurs = will
>     be able to afford them.
>
&g= t; Hi Geoff,
>     The good news is that HP don't= make them.
>     See http://www.colibrys.com/e/page/140/<= /a>

Are my calculations indicating a noise level of 1 milli-gravity at a period of 10,000,000 seconds correct ?

That's just scary.
<= br>Dare I wonder how much these things cost ?

Cheerio
Mark
__________________________________________________________

Public S= eismic Network Mailing List (PSN-L)

To leave this list email
PSN-L-REQUEST@.............. with the body of t= he message (first line only): unsubscribe
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