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Entry  Wed Aug 10 14:27:39 2011, Ishwita , Manuel, Update, PEM, Calibration of Guralp and STS2 
    Reply  Wed Aug 10 14:35:39 2011, rana, Update, PEM, Calibration of Guralp and STS2 
       Reply  Wed Aug 10 15:17:39 2011, Ishwita, Manuel, Update, PEM, Calibration of Guralp and STS2 
          Reply  Thu Aug 11 09:39:25 2011, Ishwita, Manuel, Update, PEM, Calibration of Guralp and STS2 pw_gurs_aug11.png
             Reply  Thu Aug 11 11:50:56 2011, Manuel , Ishwita, Update, PEM, Calibration of Guralp and STS2 
                Reply  Thu Aug 11 16:15:59 2011, Ishwita, Manuel, Update, PEM, Calibration of Guralp and STS2 
Message ID: 5196     Entry time: Thu Aug 11 16:15:59 2011     In reply to: 5187
Author: Ishwita, Manuel 
Type: Update 
Category: PEM 
Subject: Calibration of Guralp and STS2 

 

Finally, we have found the correct calibration of Guralp and STS2 seismometers.

ADC: 216counts = 20V Hence, calibration of ADC is 3.2768e+03 counts/V.


 

GURALP

Sensitivity of seismometer = 800 V/ms-1

Gain of the guralp breakout box (reference elog entry) = 20

Calibration = 3.2768e+03 counts/V x 800  V/ms-1 x 20 = 52428800 counts/ms-1 -----> 1.9073e-08 ms-1/count


STS

Sensitivity = 1500 V/ms-1

Gain of the STS electronic breakout box = 10

Calibration = 3.2768e+03 counts/V x 1500  V/ms-1 x 10 = 49152000 counts/ms-1 -----> 2.0345e-08 ms-1/count

 

ELOG V3.1.3-