User's Guide

Installing the 100W and 100WP ERT Module
TDC-0909-003 100W and 100WP Datalogging ERT Module Installation Guide 15
Proprietary and Confidential
To install the 100W and 100WP ERT module on a rod
1. Remove the pit lid. Inspect the area to make sure there are no buried cables, pipes, or other obstructions.
2. Measure the pit box depth from the top of the lip (where the lid will rest) to the bottom of the pit. Be sure
to measure the depth at the point where you will drive the rod into the ground.
3. Add 12 inches to the pit box depth measurement taken in step 2. The resulting total represents the
minimum length of rod needed. Soil types and moisture conditions may require longer rod lengths to
ensure the ERT module is well supported and remains vertical.
4. Without touching the meter body or adjacent pipes, position the rod as close to the center of the pit as
possible. Drive the rod into the ground. Ensure the rod remains vertical.
Note The rod shown has an end cap to protect the rod while driving it into the ground.
5. Drive the rod into the ground so the top of the rod is approximately 3-1/2 inches below the bottom of the
pit lid.
• If you cannot drive the rod in enough to equal the necessary spacing, cut the remaining rod length to
the proper height using an abrasive cut-off tool.
Caution Cutting fiberglass creates dust particles. Practice proper safety precautions when using cut-off
tools to prevent exposure to fiberglass dust particles.
• If the rod is the correct depth but remains loose in the soil, replace the rod with a longer version.