Loadsensing LS-G6-LASTIL90 User manual

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
User Guide
Loadsensing Wireless Tiltmeter LS-G6-LASTIL90
Version 0.1
Wireless Laser distantiometer with Tiltmeter
(LS-G6-LASTIL90)
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
0

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Table of contents
Important instructions prior to use 2
Device Overview 3
Device Specifications 4
Equipment Provided 6
Wireless Tiltmeter Mounting Brackets 6
Powering up the Device 7
Loadsensing Device Configuration 9
Safely Closing the Device 9
Battery Life Estimates 11
Data storage 12
Calibration 13
Maintenance 14
CONTACT WORLDSENSING 15
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
1

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Important instructions prior to use
Please read these instructions carefully and ensure that the required conditions are met
before using the product.
All our Loadsensing edge devices have the following information on the casing.
Symbol
Description
Caution. Read the instructions carefully and ensure that the
required conditions are met before using the product.
Caution, hot surface.
Ensure proper waste segregation and follow electronic waste
disposal protocols.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
2

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Device Overview
This user guide explains how to configure and operate Worldsensing’s Loadsensing Wireless
Tiltmeter. Further technical descriptions are available in the datasheets.
The Loadsensing Wireless Laser and Tiltmeter is a long-range, low-power wireless data
logger distance meter and inclinometer in a compact box. It measures distance with a
highly precise Leica Laser module and also can measure tilt on three axes perpendicular to
the plane of the base with a precise microelectromechanical systems (MEMS) sensor.
The wireless Laser and Tiltmeter can be used as a standalone logger for manual monitoring
and can be easily configured by connecting it to an Android phone with a USB cable.
It is designed for different applications including monitoring convergences in tunnels, on
civil works, and in underground mining, and also for continuous remote monitoring of
landslides and slope movement, in particular open pits.
Tiltmeters measure changes from vertical on the ground or in structures. This makes them
key sensors for monitoring inclinations, movements and differential settlements in slopes
or infrastructures.
Tiltmeters can be attached to vertical structures, such as columns, piers, pylons, facades
or retaining walls, to track changes in inclination and detect differential settlement; or they
can be installed to verify over time the geometry and stability of tunnels or bridges and the
cant, twist and vertical alignment of railway tracks.
They have also been extensively used in monitoring slope stability in landslide-prone areas,
embankments and mines.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
3

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Device Specifications Tiltmeter
SENSOR
Type:
MEMS inclinometer with internal
offset compensation
Range:
+/-90º
Axes:
Up to 3
Accuracy within +/-5º
+/- 0.006º
Accuracy within (+/-15º)
+/- 0.013º
Resolution
0.0001º
Repeatability LS-G6-TIL90-X
<0.0003º
Repeatability LS-G6-TIL90-I
<0.001º
Offset temperature dependency
LS-G6-TIL90-X (*)
+/-0.002º/ºC
Offset temperature dependency
LS-G6-TIL90-I(*)
+/-0.005º/ºC
Time required for reading
10 secs approximate
(*)Note that temperature dependency can be positive or negative depending on each MEMS sensor manufacturing
process. Temperature dependency is given as the maximum value.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
4

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Device Specifications Laser
SENSOR
Measuring range at
favorable conditions
0.05 - 150 m
Typical measuring
accuracy
+/- 1 mm
Resolution
0.1 mm
Repeatability (1 sigma)
0.15 mm
Laser type (light source)
Visible Laser Class II, Laser with 655 nm
Laser power
0.75-0.95 mW
Accuracy
In favourable conditions*
In unfavourable
conditions**
@1 m
+/- 1 mm
+/- 2 mm
@10 m
+/- 1 mm
+/- 2 mm
@20 m
+/- 1.5 mm
+/- 3 mm
@50 m
+/- 4 mm
+/- 7 mm
@100 m
+/- 9 mm
+/- 15 mm
@150 m
+/- 16 mm
not applicable
Size of the Laser spot
@5 m
5mm x 2.5mm (smallest value)
@10 m
7mm x 3mm
@20 m
14mm x 6mm
@50 m
35mm x 15mm
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
5

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
MEMORY: CIRCULAR BUFFER STRUCTURE
Memory records up to 200,000 readings, including time and 1 sensor
MECHANICAL
Box dimension (WxLxH)
100 x 100 x 61 mm
Overall dimensions
150 x 100 x 61 mm (excluding antenna)
Operating temperature
-10 to +50 ºC
Water ingress protection
IP67
Weight (excluding batteries)
841 g
Antenna
External: 100 mm
length (including
connector)
Mounting options
Clearance holes for M4 hexagon socket head cap screws in bottom.
Blind holes for M4 screws on the side.
USB (configuration/EXT
power)
MiniUSB port for configuration and data access. Can also be used to
power the node
Box material
Aluminium alloy
Lid material
Aluminium alloy
Batteries
Up to 2
Vibration resistance
Laser modules comply with standard ISO 9022-3, Method 36, Severity
05 (0.15mm, 10Hz..55Hz)
*** The wireless tiltmeter is impact resistant but should be treated carefully, like any precision instrument.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
6

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Equipment Provided
The Worldsensing LS-G6-Laser node is shipped with the following accessories:
●Laser and tiltmeter node
●Antenna
●Antenna adapter
Wireless Laser Mounting Brackets
The Laser node needs to be mounted on a support. Depending on the application, the Laser
node needs to be installed with a certain inclination to achieve curved surfaces and on
others applications it can be just installed aligned to the surface.
Four types of support have been designed in order to cover these applications:
●Fixed mounting for vertical surfaces (LS-ACC-IN15VP-4)
●Fixed mounting for horizontal surfaces (LS-ACC-IN15HP)
●Adjustable mounting plate (LS-ACC-LAS-AP)
●Swivel mounting bracket (LS-ACC-LAS-SB)
●Vertical mounting plate (pole mounting) (LS-ACC-IN15VPP2)
For the first three types of supports (fixed, adjustable, and swivel), supports can be attached to
the Laser node using threaded rods and chemical anchors (bonded anchors) or using
torque-controlled expansion anchors that go into the surface. Three-point mounting is the best
option because it prevents bending and torsion that can lead to unstable readings.
Single-anchor mounting is more prone to drift and disturbance. It is not recommended for
long-term applications.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
7

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
For long-term applications, chemical anchors are preferable because their performance is more
stable and their vibration resistance is higher. Torque-controlled expansion anchors can also be
used, but only if the mounting plate or bracket is drawn tight against the surface and cannot
shift laterally.
We recommend sourcing the chemical anchors locally because they are considered dangerous
goods for air transportation. If you want to install chemical anchors, Worldsensing can supply
the mounting plates with the M4 lock washers and socket screws required to attach the
tiltmeter to the mounting plate. Please contact us with questions or for additional details.
Further information and drawings can be found in the accessory user guides.
Powering up the Device
Loadsensing devices are shipped closed and without batteries. To power up the device:
1. Open the device using a 2.5 mm Allen wrench.
2. Insert C-type batteries in the battery holders, checking they match the polarity
indicated. You can connect one or more batteries; the more you use, the longer the
device will operate in the field. See our LS G6 Datalogger recommended batteries
guide for further information on the batteries.
Please note that the device has reverse battery protection but it is not safe to keep
batteries reversed in the device for a long time.
Note: The Loadsensing Wireless Tiltmeter does not have an real-time clock battery
to keep time, so it is very important for the device to be powered with batteries
when the time is set during installation. Otherwise the device will default to the
year 1970 and data will not appear in the gateway. A warning will appear in the
log’s tab.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
8

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
3. The device can be powered with batteries or external power. If a power supply of 5
Volts is powering the USB port, the device will be automatically powered by the
5Volts upply
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.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
9

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Figure 3. Wireless tiltmeter information
Loadsensing Device Configuration
Ideally, this step of the process should be carried out in the same location where the node is
going to be installed. This way, users can perform an on-site radio coverage test.
The node configuration process is done using the Worldsensing app, known as the Loadsensing
App, which is compatible with any Android device equipped with OTG technology (OS Android
HoneyComb 3.1 or higher required). WorldSensing has tested Motorola Moto G4 and G5 and
ensures that they are able to configure and test all nodes.
Loadsensing App starts up once the device has been connected to the node using the USB-OTG
cable. Manual startup is not necessary.
When a new version of the app is available, DLog will automatically display a message.
The whole configuration process does not take more than five minutes and, from that moment,
the node will start taking readings and sending data to the Gateway.
Safely Closing the Device
The wireless laser tiltmeter has undergone watertightness testing by an external laboratory
and has been given the following ratings:
Device
LS-G6-LASTIL90
Water ingress protection
IP67, IP68 (at 2 m for 2 hours)
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
10

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
To guarantee water tightness:
●Lock the box by tightening screws crosswise on the lid. Adjust the screws using a
torque wrench. If this is not done properly, the base faces and cover may not be
parallel, screwing may become more difficult and the screw threads or the Helicoil
inserts may be damaged. Moreover, the O-ring (seal) may not be properly sealed
and the degree of protection against water intrusion could be compromised.
●Screw the box at 2 Nm (the force that needs to be applied is marked on the outside
of the device) using a torque screwdriver (e.g. Ref. 1227107 from WERA).
●Mount the antenna or cover the antenna connector with a cap.
●Make sure the sealing ring has not been physically or chemically manipulated.
Note: There is no need to seal the GORE valve to comply with IP67/IP68.
Note: We can’t guarantee the IP67/IP68 rating if any of the above conditions are not met or
if one or several components (e.g. the GORE valve) are damaged.
Note that box screws shouldn’t be torqued more than 2 Nm. If you exceed the torque, the
Helicoil insert may be damaged. We do not recommend using electric drills or electric
screwdrivers.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
11

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Battery Life Estimates
The following table provides the battery lifespan indicated for two SAFT LSH14 batteries
lifetime estimates are based on distance measurements in the range 10 to 20 m and a
model following a Barcelona temperature profile. Bear in mind that consumption varies
depending on the sampling rate and environmental conditions.
Note: European radios work between SF7 and SF11, and FCC radios work between SF7 and
SF9.
Sampling rate
SF9@14dBm
SF8@20dBm
5 min
3.3 years
3.5 years
30 sec
9 weeks
12 weeks
1 min
18 weeks
23 weeks
5 min
18 months
22 months
30 min
5 years
5.5 years
1 h
6.5 years
7 years
6 h
8.5 years
8.6 years
12 h
8.8 years
8.9 years
24 h
9 years
9 years
Table 1: Battery lifespan in years assuming intermediate environmental conditions for European and FCC radios
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
12

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Data storage
The internal data logger memory size is 4 MB. The wireless tiltmeter stores up to 200,000
readings. Data storage periods are indicated in Table 3. Memory mode is a circular buffer.
When the memory is full, logging continues by overwriting the earliest readings. Aside from
the sensor readings, the device also collects health data hourly, which indicates the battery
voltage, the internal temperature of the device and the device uptime.
Number of
sensors
Sampling rate
60 minutes
30 minutes
10 minutes
1
more than
10 years
more than
20 years
3.5 years
Table 4: Data storage periods (without overwriting) for the wireless tiltmeter
Data is stored in comma-separated value (CSV) files. You can download readings and health
Calibration
All wireless laser tiltmeters are assembled, calibrated and tested under stringent quality
control standards.
In case recalibration is needed, Worldsensing provides a calibration service. Please contact
[e-mail] for more information.
For the calibration process, Worldsensing will disassemble the wireless tiltmeter to inspect
the mechanical parts before recalibrating the device.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
13

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Maintenance
The wireless laser tiltmeter is packaged in a rugged aluminum box and should provide many
years of trouble-free operation.
Wireless laser tiltmeters require no maintenance other than normal cleaning, battery
replacement and inspection of the seals. Apart from this maintenance, the devices are not
field serviceable.
The wireless laser tiltmeter is a precision instrument. Minor external actions or changes in
the initial conditions of the structure, such as rust in the supports, construction pathology
or thermal behavior, can cause changes in the tilt readings. Visual inspections can help to
understand the cause of some registered movements.
The wireless laser tiltmeter is a robust product but it should be handled carefully like any
precision instrument. In particular, take care to avoid any impact, to protect the internal
MEMS tilt sensor and to avoid distorting the mechanics of the device.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
14

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Regulatory notices
FCC - Regulatory Notices
Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may
cause undesired operation.
Permitted Antenna
This radio transmitter has been approved by the FCC to operate with the antenna types listed
below with the maximum permissible gain indicated. Antenna types not included in this list,
having a gain greater than the maximum gain indicated for that type, are strictly prohibited for
use with this device.
Interface and frequency range
Type
Max Gain
Unlicensed bands
LoRA @900 MHz
Stubby dipole
-3.2 dBi
RF exposure safety
This device complies with the FCC RF exposure limits and has been evaluated in compliance
with mobile exposure conditions.
The equipment must be installed and operated with minimum distance of 20 cm of the human
body.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
15

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Class Adevice notice
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
16

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
ISED - Regulatory Notices
Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
This device complies with ISED license-exempt RSS(s).
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may
cause undesired operation.
Permitted Antenna
This radio transmitter has been approved by the ISED to operate with the antenna types listed
below with the maximum permissible gain indicated. Antenna types not included in this list,
having a gain greater than the maximum gain indicated for that type, are strictly prohibited for
use with this device.
Interface and frequency range
Type
Max Gain
Unlicensed bands
LoRA @900 MHz
Stubby dipole
-3.2 dBi
RF exposure safety
This device complies with ISED RF exposure limits and has been evaluated in compliance with
mobile exposure conditions.
The equipment must be installed and operated with minimum distance of XX cm of the human
body.
CAN ICES-00x(A)
This Class Adigital apparatus complies with Canadian ICES-00x.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
17

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
Avis de Conformité Réglementaire - ISED
Les changements ou modifications non expressément approuvés par la partie responsable de
la conformité peuvent annuler le droit de l'utilisateur à utiliser l'équipement.
L’équipement est conforme aux CNR d’ISED applicables aux appareils radio exempts de licence.
L’exploitation est autorisée aux deux conditions suivantes:
1. L’appareil ne doit pas produire de brouillage;
2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d’en compromettre le fonctionnement
Antennes autorisées
Cet émetteur radio a été approuvé par l'ISDE pour fonctionner avec les types d'antennes listés
ci-dessous avec le gain maximum autorisé indiqué. Les types d'antennes non inclus dans cette
liste, ayant un gain supérieur au gain maximum indiqué pour ce type, sont strictement interdits
pour une utilisation avec cet appareil.
Interface et bandes des fréquences
Type
Max Gain
Bandes sans licence
LoRA @900 MHz
Stubby dipole
-3.2 dBi
Sécurité d'exposition aux RF
Cet appareil est conforme aux limites d'exposition RF d'ISDE et a été évalué conformément aux
conditions d'exposition mobile.
L'équipement doit être installé et utilisé à une distance minimale de 20 cm du corps humain.
CAN NMB-00x(A)
Cet appareil numérique de classe Aest conforme à la norme canadienne NMB-00x.
BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
18

User Guide
Loadsensing Wireless Tiltmeter
Version 0.1
CONTACT WORLDSENSING
Need more support? Get in touch with our Customer Success team:
Email: [e-mail]
Phone: [phone] (08.30h - 16.30h UTC)
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BARCELONA
Viriat 47, Edificio Numancia 1, 10th floor,
08014 Barcelona, Spain
([phone]
www.worldsensing.com
[email protected]
19