Mounting (Downhole Sensor); Borehole Preparation - GeoSIG AC-23 User Manual

AC-23 Accelerometer User Manual
11.08.2022 / V17

8 Mounting (downhole sensor)

The sensor must be installed in a 3-inch inclinometer tube. At least a 100 mm
borehole must be drilled. Depending on the soil condition, it could be required
to drill a higher dimension hole and to implement a 120 mm PVC casing to
insure a free path when the inclinometer tube is inserted in the borehole.

8.1 Borehole preparation

Note: Do not scale the drawing.
Surface level
Do not allow concrete mix from casing sealing to enter the casing.
12 cm
Figure 8 – Borehole preparation
10 / 15
PVC tubing
Minimum free
diameter inside
casing: 120 mm.
Casing
sealing
Cap
GS_AC-23_UserManual_V17