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

GeoSIG Ltd
AC-23 Accelerometer Manual
6

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.
6.1

Borehole preparation

Note: Do not scale the drawing.
Surface level
Do not allow concrete mix from casing sealing to enter the casing.
GS_AC-23_UserManual_V14.docx/27.05.2019
12 cm
Page 10
PVC tubing
Minimum free
diameter inside
casing: 120 mm.
Casing
sealing
Cap