Installing Loop Electrode to Protect Sensors - RME111 - AWS310-SITE - RWCC - AWS310 - AWS430 - RWS200 - FOC201

Grounding and Lightning Protection in Vaisala Outdoor Installations Technical Reference

Document code
M211786EN
Revision
B
Language
English (United States)
Product
RME111
AWS310-SITE
RWCC
AWS310
AWS430
RWS200
FOC201
Document type
User guide
Figure 1. Loop Electrode to Protect Soil Sensors

Use a horizontal ground electrode as a loop to protect the soil sensors, for example soil moisture sensors. The loop prevents voltage differences from destroying the sensors and minimizes the effects of continuous ground currents (59/60 Hz hum) to the readings.

  • Route the grounding cable from the grounding connector at the mast base to around the mast.
  • Bury the electrode, making a 5 … 6 m (16 … 20 ft) diameter loop with the electrode. Guy wires are not needed.
  • Make sure the buried loop electrode surrounds the sensors.
  • Connect the loop to the mast with two or more connections.
Do not make the wires run parallel any longer than absolutely necessary.