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Entry  Wed Oct 23 19:14:10 2013, Jenne, Update, PEM, Seismometer status 
    Reply  Sun Oct 27 19:19:42 2013, Den, Update, PEM, Seismometer status TrilliumPlate.PDFGuralpPlate-1_final.pdf
       Reply  Sun Oct 27 23:26:44 2013, rana, Update, PEM, Seismometer status 
Message ID: 9301     Entry time: Sun Oct 27 23:26:44 2013     In reply to: 9300
Author: rana 
Type: Update 
Category: PEM 
Subject: Seismometer status 

 It would be nice if we could use the existing seismometer cable and place a 2-terminal temperature sensor within the stainless-steel can. A device like the AD590/592 can drive current over a long cable run without pickup issues since its a current source. Inside of the seismometer breakout box we should make a circuit to scale the signal to be close to zero at 25 C and have a slope of 1 V/deg. There are example circuits in the application note - we can just make them on a piece of vector board and glue to the inside of the breakout box (where we connect to the regulated power).

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