EarthLogger EL4+ User Manual
Page 8
Version 1.07
EarthLogger EL4+ User Manual v1.07.docx
© MRD Rail Technologies Pty Ltd
05Sep2018
COMMERCIAL IN CONFIDENCE ©2016 MRD RAIL TECHNOLOGIES PTY LTD WWW.MRD.COM.AU +61 7 3821 5151
L
OGGING
&
U
PLOADING
EarthLogger samples the Insulation Resistance and Voltage at 10Hz (10 samples per second).
To minimise the volume of data, logging occurs only if a change from the last recorded value is detected.
Sampling and Logging continues for all channels in the event of a PreWarning or Warning occurring.
If the network connection is lost, EarthLogger records up to 16Gb of data on internal memory (enough for
several years). Logged data will be uploaded when the network is restored.
By default, EarthLogger uses Ethernet to connect to the Internet via a local network. If Ethernet is not
available, EarthLogger attempts to connect using 3G/4G. It is possible to maintain simultaneous 3G/4G and
Ethernet connections. The network architecture is shown below.
