Geosense Laser Tilt90 User manual

Preliminary User Guide V1.0
Tilt90
0

Table of contents
1.Important instructions prior to use 2
2.Device Overview 3
3.Device Specifications 4
4. System requirements 6
5. Equipment Provided 7
6. Wireless Tiltmeter installation
11
7. Powering up the Device 12
8. Loadsensing Device Configuration 13
9. Safely Closing the Device 16
10. Understanding data 17
10.1.1 Calibration 18
13. Maintenance and troubleshooting
22
14. Battery Life Estimates 23
15. Data storage 25
16. FAQs
27
Appendix A. CSV example and JSON format 29
Appendix B. Vibration Resistance Test (LS-G6-TIL90-I) 30
CONTACT WORLDSENSING 33
1

1.Important instructions prior to use
Please read these instructions carefully and ensure that the required conditions specified
in this document are met before using the product. Each of our edge devices includes this
information inside the packaging
General warnings
●
Follow these precautions to avoid a battery explosion or leakage of flammable liquid or gas:
○
Use the correct battery type. Dispose of the batteries according to instructions. Do not
dispose of the batteries by throwing them into a fire or a hot oven, or mechanically crush or cut
them.
○
Do not leave the batteries in an extremely high-temperature environment.
○
Do not subject the batteries to extremely low air pressure. It may result in an explosion or
leakage of flammable liquid or gas.
○
Do not short circuit the batteries. This will blow the protection fuse.
●
Batteries and equipment to be connected via the data port must meet IEC 62368-1 ES1 and PS1
requirements.
●
Equipment to be installed in restricted access areas.
Symbol
Description
Caution. Do not proceed until the instructions are clearly understood and all required
conditions are met.
Read the instructions for use carefully before using.
Caution, hot surface.
According to the European Union WEEE Directive 2012/19/EU, this product and its batteries
should not be discarded as unsorted waste.
Please send them to separate collection facilities for recovery and recycling.
It is your responsibility to dispose of your waste equipment and batteries properly. The
correct disposal of your old equipment and batteries will help prevent potential negative
consequences for the environment and human health.
2

2.Device Overview
This user guide explains how to configure and operate Worldsensing’s Loadsensing Wireless
Tiltmeter90. Further technical descriptions are available in the datasheets .
The Loadsensing Wireless Tilt90 is a long-range, low-power wireless data logger with a 3
axes tiltmeter. It measures 3-axis inclination with respect to gravity’s direction and reports
the two axes of rotation from the horizontal plane in any orientation.
There are two models of Tilt90, the one with an external antenna (LS-G6-TIL90-X) and the
one with an internal antenna (LS-G6-TIL90-I), which dier from specifications (see the
specifications on next chapter). Model LS-G6-TIL90-I will be released shortly.
The wireless tilt90 can be used connected to the CMT or as a standalone logger for manual
monitoring, and can be easily configured by connecting it to an Android phone with a USB
cable.
Tiltmeters for monitoring applications provide measurements of changes from the vertical
level, either on the ground or in structures. This makes them key sensors to monitor
inclinations, movements and dierential settlements of slopes or infrastructures.
Tiltmeters have been extensively used in landslides, embankments and mines monitoring
to control the stability of the slopes.
3

3.Device Specifications
Tiltmeter specifications
Value
Type
Tilt angle calculated from 3-Axis MEMS
accelerometer
Range
±90°
Axes
3-axis inclination measurement with respect to
gravity’s direction. Reports the two axes of rotation
from the horizontal plane in any orientation.
Node
LS-G6-TIL90-X
LS-G6-TIL90-I
Accuracy within ± 2⁰
± 0.0025º
± 0.0045º
Accuracy within ± 4⁰
± 0.005º
± 0.006º
Accuracy within ± 15⁰
± 0.013º
± 0.013º
Accuracy within ± 45⁰
± 0.08º
± 0.08º
Accuracy within ± 85⁰
± 0.23º
± 0.23
Resolution
0.0001°
0.0001°
Repeatability
<0.0003°
<0.0015º
Oset Temperature
dependency(*)
± 0.002°/°C
± 0.005°/°C
Stability @ 14 hours
<0.003°
<0.010º
Measure of dispersion
Standard deviation of the set of measurements
collected during the reading and transmitted with
each tilt measurement. It can be used to filter noisy
data.
Temperature sensor resolution
0.1 ⁰C
Temperature sensor accuracy
±0.5 ⁰C
(*)
Note that temperature dependency can be positive or negative depending on each MEMS sensor manufacturing
process. Temperature dependency is given as the maximum value.
4

MEMORY: CIRCULAR BUFFER STRUCTURE
Memory records up to 140,000 readings, including time and 3 axes
MECHANICAL
Device
LS-G6-TIL90-X
LS-G6-TIL90-I
Box dimension (WxLxH)
100x100x61 mm
100x100x61 mm
Overall dimensions
150x120x61 mm
103x100x61 mm
Operating temperature
-40ºC to 80ºC (-40ºF to 175ºF)
Weather protection
IP68 (at 2 m for 2 hours).
Weight (excluding batteries)
606 g
390 g
Antenna
External: 100 mm
length (including
connector)
Internal
Mounting options
Clearance holes for M4 hexagon socket head cap screws in bottom.
Blind holes for M5 screws on the lateral side.
USB (configuration/EXT power)
Internal mini USB
Box material
Aluminium alloy
Aluminium alloy
Lid material
Aluminium alloy
Polycarbonate
Batteries
From 1 up to 2
Vibration resistance
Do not subject the device to
accelerations that exceed
higher levels of accelerations
than +-8g. For higher levels
we recommend to use the LS
G6-TIL90 I.
Do not subject the device to
accelerations that exceed higher
levels of accelerations than +-80g.
Test: Random vibration test railroad
profile according to level C.2 (on
sleeper) of standard EN 50125
3:2003+COR R2010 standard and
methodology of the EN
60068-2-64:2008 standard.
Impact resistance*
Drop from 1 meter onto a concrete surface (20 000g).
* The tiltmeter has good impact resistance. However it should be treated carefully like any precision instrument.
5

4. System requirements
The TIL90 is:
- available from version 2.63 onwards
- Needs to be configured by using the Worldsensing App (instead of the Dlog)
- CMT Edge version: from firmware version 2.5 (4G Gateways) and 2.5.1 (3G Gateways)
onwards
- CMT Cloud version: from firmware version 1.4.0 onwards
6

5. Equipment Provided
As mentioned above, there are two wireless tiltmeter variants.
Figure 1: LS-G6-TILT90-X view
The wireless tilt90 with an external antenna (LS-G6-TIL90-X)
1. Metallic casing
2. USB connector
3. RP N Female connector, which complies with Federal Communications Commission
(FCC) regulations, for the sensor network radio antenna
4. Pressure stabilizer for protection against condensation (protective vent)
5. Connector male RP N to RP - SMA male and aerial with RP - SMA male
6. Antenna
7

User Guide- Preliminary version
Loadsensing Wireless Tiltmeter 90
Figure 2: LS-G6-TILT90-X elements
Figure 3: LS-G6-TILT90-X antenna with N-connector
8

The LS-G6-TIL90-X can also be equipped with a more robust antenna, placed horizontally,
instead of the standard L-antenna that is installed vertically. Please contact us for more
details.
Figure 4: LS-G6-TILT90-I view
The wireless tiltmeter with an internal antenna (LS-G6-TILT90-I) has the following
elements:
1.
Polycarbonate lid
2. Metallic box
3. Pressure stabilizer for protection against condensation (protective vent)
4. Internal antenna
9