Operation
 The
in-place Inclinometer system consists of inclinometer casing and
a string of electrolytic inclinometer sensors. The inclinometer
casing controls the orientation of the sensors. It is installed
in a horizontal borehole, buried in a trench, or attached to a structure,
with one set of grooves oriented vertically. The string of sensors
is positioned within the casing.
The sensors measure the inclination of the casing (tilt from horizontal).
Changes in the inclination readings indicate that the casing has
been displaced by ground movement. The amount of displacement is
calculated by finding the difference between the current inclination
reading and the initial reading and then converting the result to
a vertical distance.
In most in-place inclinometer applications, sensors are connected
to a data acquisition system that continuously monitors movements
and can trigger an alarm when it detects a change, or rate of change,
that exceeds a preset value.
Advantages
High Resolution: The ceramic
EL sensor has a range of +/- 10 degrees and a resolution of 0.0024
degrees or 0.04 mm per meter when read with a CR10X. Increased resolution
is possible with a higher resolution readout device.
Ideal for Critical Applications:
In-place inclinometers are easily connected to real-time data acquisition
systems, on-site alarms, and automatic dialers.
Lower Cost: EL IPI systems cost
significantly less than comparable servo-accelerometer systems.
Wheels: Wheeled sensors can be removed to allow verification
checks with a traversing probe or when sensors are needed an a different
site.
Rigid Gauge Tubing: Inclinometer calculations require straight-line
segments for sensor gauge lengths. Rigid tubing satisfies this requirement.
Rigidg gauge tubing also provides reliable performance across abrupt
changes at the shear zone.
Single Cable Installation: The multiplexed version of the
EL IPI installs with just one cable. Although multiplexed sensors
are more expensive, their higher cost is partially offset by easier
installation and wiring, and savings on signal cable and external
multiplexers.
Complete Solution: Slope Indicator offers complete
monitoring solutions that include data
loggers and software such as Argus
Web-Based Monitoring , which can present profile plots and trend
plots of inclinometer data just minutes after the readings are obtained.
For more information
Please download the datasheet
and manual
EL Horizontal In-Place Inclinometer. You may also be interested
in the manual
for the multiplexed version
. These documents
can be viewed and printed with Adobe Acrobat Reader.
|
