40Hz High Frequency Sensor

Salient Features:

PASSCAL owns two types of 40Hz vertical geophones.

• The 40Hz geophones for the Multichannel Digitizer Systems are manufactured by Sercel and Geospace.  These vertical geophones are critically damped at 0.555 and have a sensitivity of about 21 V/m/s.
• The 40Hz geophones for the Texan Digitizers these geophones are manufactured by Sercel.  These vertical geophones are critically damped at 0.555 and have a sensitivity of 35.3 V/m/s

Uses primarily include active source studies.

Manufacturer Documents:

• http://www.sercel.com/Products/land/sensors/seismometers.php
• http://www.geospacelp.com/

Installation & Troubleshooting:

 Installation requires a separate bubble level to be placed on top of the geophone for proper leveling.

Other Documents:

• PASSCAL Sensor Comparison Chart
• Policy for the use of PASSCAL Instruments

Photo Galleries:

• Field Images