906 Little Dipper Jewell0 pages
Model 906 Little Dipper
APPLICATIONS
ADVANTAGES
• Monitor lateral movement of
slopes, embankments,
trenches and tunnel walls.
• Monitor ground settlement
beneath tanks and fills.
• Monitor surface movements by
direct burial in shallow boreholes.
• Cast Little Dippers in place to
monitor structural deformation.
• Economical.
• Use with standard inclinometer casing
sizes, or by direct burial.
• Use with any cable length.
• High precision – detect movements
smaller than 0.1 inch in 100 ft
(0.1mm/meter).
• Built with on-board electronics for
stable readings over long cables.
• Non corrodible polymer and fiberglass construction.
inclinometer casing. With this method your
Little Dippers measure rotation at discrete
depths in the hole.
In both installation methods the
inclinometer string hangs in tension from
the top of the casing, giving you the most
stable in-place inclinometer configuration.
INSTALLATION
Little Dipper In-Place Inclinometers are
economical biaxial instruments for
monitoring the deflection of inclinometer
casing. Each Little Dipper connects to the
one above by a low-cost fiberglass
connecting rod, forming a string of
inclinometers in the cased borehole. Two
cased borehole installation methods are
available:
1) Multiple-interval installation, in
which universal pivots separate hinged
segments.
Each segment measures the lateral
displacement of a discrete interval in the
borehole.
Little Dippers also provide diagnostic, costeffective results when installed in the ground
by direct burial. In this manner deformation
of a large area can be monitored by a small
array of sensors. They can also be cast in
place in retaining walls, caissons and other
structures to provide a direct measure of
structural movement.
OPERATION
The stable, high-level outputs of Little
Dipper In-Place Inclinometers are easily
read by all popular data loggers. Jewell
Instruments offers complete in-place
inclinometer systems specifically tailored
to your project requirements. Options
include automated loggers, manual
readouts and our powerful TBASE II
database software for rapid data analysis
and reporting.
Little Dippers installed in inclinometer casing
2) Multiple-point installation, in which
removable fins hold the sensors snugly in
the grooves of the
Jewell Instruments LLC, 850 Perimeter Road, Manchester, NH 03103
sales@jewellinstruments.com • www.jewellinstruments.com • Tel (800) 227-5955