Guralp Systems CMG-3ESPCD - Manual (Page 18)

CMG-3ESPCD Digital Broadband Seismometer Installing the 3ESPCD
3.6.1 Deployment
1. Prepare a hole of 60 – 90 cm depth to compacted subsoil, or down to
the bedrock if possible.
2. Clean the hole down to the bottom, and remove any loose material from
the mouth. Ensure that the bottom of the hole is relatively flat.
3. If the bottom of the hole is made of hard rock, you may need to put in
some loose sand or soil so that the sensor can be levelled.
4. Connect the sensor to cables for the GPS unit and power source.
MAN-C3E-0002 18 Issue B - November 2013