MEMS Digital Inclinometer System with Android
Instruction Manual
ICM0099A
24
The Digital Inclinometer app first ensures the reel and probe are functional and
communicating with the app via Bluetooth. The Digital Inclinometer app then performs
integrity checks by verifying that the probe type is a vertical probe and the units in the probe
match the borehole units configuration. The user is notified of incorrect configurations and
prevented from taking readings.
If the integrity checks are correct and the reel/probe are successfully connected through
Bluetooth, the user may commence taking the displacement readings. The reading involves
measuring the Axis A+ depths followed by reading measuring the Axis A- depth after the
probe is rotated 180 degrees.
Axis A+ Take Readings Process
– First Pass
The probe is first lowered to the lowest depth of the borehole. Once the probe is at the
correct depth and remains stationary, the real-time reading stabilizes.
The new readings screen shows the status of the probe readings refreshed approximately
once every second. Figure 19 shows a sample Axis A+ reading at the bottom depth and the
Axis A+ reading at the top depth.
Figure 19
– Axis A+ reading at bottom depth (10m) and top depth (0.5m)
Axis A and Axis B shows the instantaneous lateral displacement in meters or feet.
The Noise (uV) is the difference between the current reading and the previous reading
measured in microVolts. A small difference or noise level indicates a stable and accurate
reading. The noise level is color coded, where an optimal low noise level is displayed in
green, a marginal noise level is displayed in orange, and a high noise level is displayed in
red.
The noise level varies based on each borehole location. In noisy environments (i.e.,
locations with heavy equipment in the vicinity), the acceptance criteria for a reading may be
different based on environmental conditions.
If the user deems the probe reading is acceptable, the user taps the ACCEPT button. The
Digital Inclinometer app then repeats the process for the next depth.
If the user deems any of the previously accepted readings on the Axis A+ is improperly
taken, the user may request a re-take on any depth. The user lowers the probe to the re-take
depth. On the Digital Inclinometer app, the user scrolls to the depth and taps the RETAKE
