Hi

Here is a updated drawing of the sensor,
http://www.simnet.is/jonfr500/sensor/long.period.sensor.v1.0.1.jpg

This sensor is based on mass. It won't have any springs in it. But a
damping system on the end and a magnets and coils in front of it. I am
also going to use a resistance to get the signal as close to 1Hz as I
can.

Regards.
-- 
Jón Frímann
http://www.jonfr.com
http://www.simnet.is/jonfr500/earthquake/

__________________________________________________________

Public Seismic Network Mailing List (PSN-L)