User's Manual

Installing the 100W/100W+ and 100WP/100WP+ ERT Module
TDC
-0909-006 100W/100W+ and 100WP/100WP+ Datalogging Water ERT Module Installation Guide 19
Proprietary and Confidential
To install the 100W/100W+ and 100WP/100WP+ ERT module using the wall mount procedure
1. Select a vertical surface in the pit box or on a wall (for example, an ERT module mounted in a basement).
2. Position the ERT module vertically so the top of the ERT module is between 1 and 2-inches below the
bottom of the lid.
3. Mark the location of the top mounting hole.
4. Drill a pilot hole in the pit box wall. Follow the screw manufacturer's recommendation for the pilot hole
size.
5. For concrete-type pit boxes, it may be necessary to use a screw anchor. Choose an anchor appropriate for
a #10 pan head screw.
Caution Do not over-tighten the mounting screws. Over-tightening the mounting screws may break the
ERT module mounting tabs.
6. Start a screw into the pilot hole. Using the top hole of the ERT module, set the ERT module over the
screw head and slide it down so the screw is now at the top of the notch (as shown). Carefully tighten the
screw until snug. Over-tightening the mounting screw could crack the ERT module housing.
Note If mounting requires a screw anchor, mark the location of the bottom anchor and remove the ERT
module. Drill the required mounting hole, insert the anchor, and re-attach the ERT module.
7. Holding the ERT module in the upright position, drill the second pilot hole. Use the bottom mounting hole
as a template.
Caution Any ERT module position other than upright may negatively affect radio performance and
battery life.
8. Screw the bottom screw into the pilot hole until snug. Do not over-tighten the mounting screw.