.. _efp-06:

.. |br| raw:: html

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EFP-06
============  
 

Manufacturers Data Sheet
^^^^^^^^^^^^^^^^^^^^^^^^^^

:download:`Safety Information Sheet 2019 08 31.pdf <https://geo-metronix.de/mtxcld/s/E2JQantDdScfRZf>`
 

Information about usage and storage :ref:`replacing the electrodes <replacing-the-electrodes>`


Steel Rods
^^^^^^^^^^^^

Steel rods can be used for short recordings around 1-2 hours.

The deliver data good down to 10 Hz. Maybe more.

In dry areas you notify that by hammering the rods into the ground, the hole widens and 
the rod looses contact to the ground - and your measurment is useless!

Use the EFP-06. Use bentonite in case of dry ground. **Never use salt!** That destroys the chemistry
of the electrodes (despite many people say "use salt" ... don't use salt!).

Hence that above 100 Hz you'll see some data - but that is data from the E-filed line and not 
from the electrodes.

In case you get 100 mV offset: check the electrodes. :ref:`replace electrodes <replacing-the-electrodes>`