Thanks Gary, I wasn't that familiar with WinSDR. Ed.
----- Original Message -----=20
From: Gary Lindgren=20
To: psn-l@.................
Sent: Saturday, October 31, 2009 4:59 PM
Subject: RE: HELICORDER value
Edward,
WinSDR has audible alarms built in the application. Different sounds =
whether close by or teleseismic events. You just have to make sure you =
turn the speaker down at night unless you want to wake up because of a =
heavy freight train going down the track a mile away. Certainly having a =
paper trace is impressive, but I would worry about maintaining it up all =
the time.
Gary
=20
From: psn-l-request@.............. =
[mailto:psn-l-request@............... On Behalf Of Edward Ianni
Sent: Saturday, October 31, 2009 10:29 AM
To: psn-l@..............
Subject: Re: HELICORDER value
=20
This is an interesting point. It would be very nice to be alerted =
audibly when an event is actually being received (occurring) in one of =
our data logging/analysis programs. I assume it's not that easy to do =
because of the varying noise and event levels. Ed.=20
With the drum recorder I am preserving a bit of history and the drum =
is what impresses visitors. It is also my warning signal as it sits in =
our living room and you can hear the pen skritching on the paper when =
the quake comes in. To me, nothing beats the WOW-factor of watching a =
world-class quake come in on a drum recorder.
George
At 07:36 AM 10/28/2009, you wrote:
For a lot less trouble why not simply get
A wide screen LED TV and a LAPTOP ?
I bet they may even be less expensive
than those drum recorders ?
Capillary action sounds like the
trees use to pick up water from their roots
???
I think the pumping is really caused by
the outflow (EVAPORATION OR ? MOVING PAPER)
pulling up on the reservoir
as the ink goes to the paper.
The capillary action only keeps
the ink in the tube and little more.
INTERESTING, never thought of this before.
You guys need to study plant roots & Leaves
to understand your own equipment.
----- Original Message ----- From: "Jan Froom" =
To:
Sent: Tuesday, October 27, 2009 1:52 PM
Subject: Re: TELEDYNE-GEOTECH HELICORDER Ink Pen
You want capillary attraction to pull the ink out of the ink =
reservoir, so you have to have the top of the ink in the reservoir below =
the pen level, otherwise the ink will siphon causing a very wide inky =
trace. =20
I use a simple plastic one oz bottle which I've placed two brass =
tubes in the lid, one going to the bottom of the
bottle and one just though the top for a air vent. The one going to =
the bottom of the bottle is then connected to the pen using
neoprene tubing. To get the whole thing going... I put my finger =
over the air vent tube, squeeze the bottle until ink comes out
the pen, then remove my finger from the air vent, and release the =
squeeze on the bottle.
The pen opening must be _*EXACTLY*_ tangent to the face of the =
drum... I installed the pen... and then put a very fine sand
paper on the drum surface and sanded the pen to get that tangent =
fit.
Getting the pen to pull ink was the hardest part of my installation =
and
I probably spent more time getting the pen to work... than anything =
else. Having George Bush & Steve Hammond available for suggestions and =
support was the only way I got mine going.
Another interesting point is the force at which the pen makes =
contact with the paper...
our pens have a counter weight on a screw at the back end of the pen =
which can be adjusted to adjust the contact force.
Too light and pen will skip on a large rapid swings... too heavy and =
you've decreased your sensitivity.
I'm curious as to how many other "drummers" are out there?
Jan in Gilroy
Stephen Hammond wrote:
Hi, the ink will flow if the reservoir fluid level is above the pen. =
The trick is to keep it from flowing too much. I used a wire clamp on =
the tubing to cut the flow down. Professional models used low pressure =
pumps and an fin valve. If I can suggest, search online for "chart pen =
ink" and you will find the Recorder Charts Pens Company in Newhall CA. =
800-758-0740. While they do not list your unit they have a large =
selection of professional pens, ink and paper. It might be worth a trip =
to the website or even a call to see what they can offer in the way of a =
solution.
Steve
=20
*From:* psn-l-request@.............. [ =
mailto:psn-l-request@............... *On Behalf Of *James Allen
*Sent:* Saturday, October 24, 2009 9:46 PM
*To:* psn-l@..............
*Subject:* Re: TELEDYNE-GEOTECH HELICORDER
=20
Steve Hammond
Is there need for a special reservoir to insert the capillary tubing =
into or will the ink start flowing by the action of the pen on the chart =
paper?
Thanks
James Allen
----- Original Message -----
*From:* Stephen Hammond < mailto:shammon1@.............>
*To:* psn-l@.............. < mailto:psn-l@..............>
*Sent:* Saturday, October 24, 2009 8:41 PM
*Subject:* RE: TELEDYNE-GEOTECH HELICORDER
=20
There is a typo. Not needs try needle... Steve
=20
*From:* psn-l-request@..............
< mailto:psn-l-request@..............>
[ mailto:psn-l-request@............... *On Behalf Of *Stephen =
Hammond
*Sent:* Saturday, October 24, 2009 8:38 PM
*To:* psn-l@.............. < mailto:psn-l@..............>
*Subject:* RE: TELEDYNE-GEOTECH HELICORDER
=20
For some time some PSN members were using hypodermic needs to
build ink pens. You simply grind the point off and have a
precession tip that can then be connected to the reservoir =
using
a capillary feed tube. We learned the process from Howard who =
used
this design back in the first Bay area seismic station way =
before
our time in the 40's. I ran two drum recorders back around 1990
and Jan Froom currently has a display station at Bonfante =
Gardens
in Gilroy CA that has a permanent display he put together for
them also using this design.
Regards, Steve Hammond PSN Aptos, CA
=20
=20
__________________________________________________________
Public Seismic Network Mailing List (PSN-L)
To leave this list email PSN-L-REQUEST@.............. with the body =
of the message (first line only): unsubscribe
See http://www.seismicnet.com/maillist.html for more information.
George Bush
Sea Ranch, CA, USA
38.73775N, 123.48882W=20
-------------------------------------------------------------------------=
---
No virus found in this incoming message.
Checked by AVG - www.avg.com=20
Version: 8.5.423 / Virus Database: 270.14.40/2471 - Release Date: =
10/31/09 07:53:00
-------------------------------------------------------------------------=
-----
No virus found in this incoming message.
Checked by AVG - www.avg.com=20
Version: 8.5.423 / Virus Database: 270.14.40/2471 - Release Date: =
10/31/09 07:53:00
Thanks Gary, I wasn't =
that familiar with=20
WinSDR. Ed.
----- Original Message -----
From:=20
Gary=20
Lindgren
Sent: Saturday, October 31, =
2009 4:59=20
PM
Subject: RE: HELICORDER =
value
Edward,
WinSDR=20
has audible alarms built in the application. Different sounds whether =
close by=20
or teleseismic events. You just have to make sure you turn the speaker =
down at=20
night unless you want to wake up because of a heavy freight train =
going down=20
the track a mile away. Certainly having a paper trace is impressive, =
but I=20
would worry about maintaining it up all the =
time.
Gary
From: =20
psn-l-request@.............. [mailto:psn-l-request@............... =
On=20
Behalf Of Edward Ianni
Sent: Saturday, October 31, 2009 =
10:29=20
AM
To: psn-l@..............
Subject: Re: =
HELICORDER=20
value
This is =
an=20
interesting point. It would be very nice to be alerted audibly =
when an=20
event is actually being received (occurring) in one of our data=20
logging/analysis programs. I assume it's not that easy to do because =
of the=20
varying noise and event levels. =20
Ed.
With the drum recorder I am preserving a =
bit of=20
history and the drum is what impresses visitors. It is also my =
warning=20
signal as it sits in our living room and you can hear the pen =
skritching on=20
the paper when the quake comes in. To me, nothing beats the =
WOW-factor of=20
watching a world-class quake come in on a drum=20
recorder.
George
At 07:36 AM 10/28/2009, you=20
wrote:
For a lot less trouble why not simply get
A =
wide=20
screen LED TV and a LAPTOP ?
I bet they may even be less=20
expensive
than those drum recorders ?
Capillary action =
sounds like=20
the
trees use to pick up water from their roots
???
I think =
the=20
pumping is really caused by
the outflow (EVAPORATION OR ? MOVING=20
PAPER)
pulling up on the reservoir
as the ink goes to the=20
paper.
The capillary action only keeps
the ink in the tube and =
little=20
more.
INTERESTING, never thought of this =
before.
You guys=20
need to study plant roots & Leaves
to understand your own=20
equipment.
----- Original Message ----- From: "Jan Froom" =
<JDarwin@.............>
To: =
<psn-l@..............>
Sent:=20
Tuesday, October 27, 2009 1:52 PM
Subject: Re: TELEDYNE-GEOTECH=20
HELICORDER Ink Pen
You want capillary attraction to pull the ink =
out of the=20
ink reservoir, so you have to have the top of the ink in the =
reservoir below=20
the pen level, otherwise the ink will siphon causing a very wide =
inky=20
trace.
I use a simple plastic one oz bottle which I've =
placed two=20
brass tubes in the lid, one going to the bottom of the
bottle and =
one=20
just though the top for a air vent. The one going to the bottom of =
the=20
bottle is then connected to the pen using
neoprene tubing. To get =
the=20
whole thing going... I put my finger over the air vent tube, squeeze =
the=20
bottle until ink comes out
the pen, then remove my finger from =
the air=20
vent, and release the squeeze on the bottle.
The pen opening must =
be=20
_*EXACTLY*_ tangent to the face of the drum... I installed the =
pen... and=20
then put a very fine sand
paper on the drum surface and sanded =
the pen to=20
get that tangent fit.
Getting the pen to pull ink was the hardest =
part of=20
my installation and
I probably spent more time getting the pen to =
work...=20
than anything else. Having George Bush & Steve Hammond available =
for=20
suggestions and support was the only way I got mine =
going.
Another=20
interesting point is the force at which the pen makes contact with =
the=20
paper...
our pens have a counter weight on a screw at the back =
end of the=20
pen which can be adjusted to adjust the contact force.
Too light =
and pen=20
will skip on a large rapid swings... too heavy and you've decreased =
your=20
sensitivity.
I'm curious as to how many other "drummers" are out=20
there?
Jan in Gilroy
Stephen Hammond =
wrote:
Hi, the ink will flow if the reservoir =
fluid level is=20
above the pen. The trick is to keep it from flowing too much. I used =
a wire=20
clamp on the tubing to cut the flow down. Professional models used =
low=20
pressure pumps and an fin valve. If I can suggest, search online for =
"chart=20
pen ink" and you will find the Recorder Charts Pens Company in =
Newhall CA.=20
800-758-0740. While they do not list your unit they have a large =
selection=20
of professional pens, ink and paper. It might be worth a trip to the =
website=20
or even a call to see what they can offer in the way of a=20
solution.
Steve
*From:*=20
psn-l-request@.............. [=20
mailto:psn-l-request@..............] *On Behalf Of *James=20
Allen
*Sent:* Saturday, October 24, 2009 9:46 PM
*To:*=20
psn-l@..............
*Subject:* Re: TELEDYNE-GEOTECH=20
HELICORDER
Steve Hammond
Is there need =
for a=20
special reservoir to insert the capillary tubing into or will the =
ink start=20
flowing by the action of the pen on the chart=20
paper?
Thanks
James Allen
=
-----=20
Original Message -----
*From:* Stephen =
Hammond=20
<=20
mailto:shammon1@.............>
=
*To:*=20
psn-l@.............. <=20
mailto:psn-l@..............>
=
*Sent:*=20
Saturday, October 24, 2009 8:41 PM
=
*Subject:* RE:=20
TELEDYNE-GEOTECH HELICORDER
=20
There is a typo. Not needs try needle...=20
Steve
=
*From:*=20
psn-l-request@..............
<=20
mailto:psn-l-request@..............>
=
[=20
mailto:psn-l-request@..............] *On Behalf Of *Stephen=20
Hammond
*Sent:* Saturday, October 24, 2009 =
8:38=20
PM
*To:* psn-l@.............. <=20
mailto:psn-l@..............>
*Subject:* =
RE:=20
TELEDYNE-GEOTECH HELICORDER
=20
For some time some PSN members were using =
hypodermic needs to
build ink pens. You simply =
grind=20
the point off and have a
precession tip =
that can=20
then be connected to the reservoir using
a =
capillary=20
feed tube. We learned the process from Howard who =
used
=20
this design back in the first Bay area seismic station way=20
before
our time in the 40's. I ran two drum =
recorders=20
back around 1990
and Jan Froom currently has a =
display=20
station at Bonfante Gardens
in Gilroy CA =
that=20
has a permanent display he put together for
=
them also=20
using this design.
Regards, Steve Hammond =
PSN=20
Aptos, CA
=
=20
_______________________________________________________=
___
Public=20
Seismic Network Mailing List (PSN-L)
To leave this list email =
PSN-L-REQUEST@.............. with the body of the message (first =
line only):=20
unsubscribe
See http://www.seismicnet.co=
m/maillist.html=20
for more information.
George Bush
Sea Ranch, CA, USA
38.73775N, 123.48882W=20
No virus found in this incoming =
message.
Checked=20
by AVG - www.avg.com
Version: 8.5.423 / Virus Database: =
270.14.40/2471 -=20
Release Date: 10/31/09 07:53:00
No virus found in this incoming message.
Checked by AVG =
-=20
www.avg.com
Version: 8.5.423 / Virus Database: 270.14.40/2471 - =
Release=20
Date: 10/31/09 07:53:00