SLOPE INDICATOR GTecLink Bedienungsanleitung
GTecLink
Dataloggers
Manual
3
About this document
1. Datalogger Installation 4
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5
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1.1 Equipment
1.2 Powering the data logger 1.3
Safely closing the data logger 1.4
Data logger mounting 10
2. Datalogger Configuration 11
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2.1 STEP 1: Connect GTecLink Android application 2.2
STEP 2: GTecLink main menu
2.4 STEP 3: Sensor configuration
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Vibrating Wire Nodes (526160xx)
GeoFlex Nodes (5780170x)
Analog Node (57804800)
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2.5 STEP 4: Sensors Data
2.6 STEP 5: Radio configuration
2.7 STEP 6: Radio signal coverage test 2.8
STEP 7: Test results interpretation 20
3 GTecLink Dataloggers 21
3.1 Vibrating Wire Loggers 21
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3.1.1 Sensor connection
3.1.2 Barometric measurements
3.1.3 Battery lifespan
3.1.4 Configuration
3.1.5 Data storage 23
3.2 GeoFlex Loggers 24
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GTecLink Datalogger Manual
24 3.2.1 Sensor Connection
3.2.2 Battery lifespan 26
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a) Geosense / RST IPI
b) Sisgeo IPI
c) MDT Multi-Point-Borehole-Extensometers (MPBX) 27
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3.2.3 Configuration
3.2.4 Data storage
3.3 Analog Logger 29
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3.3.1 Sensor Connection
3.3.2 Battery lifespan 3.3.3
Configuration 3.3.4 Data
storage 34
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4. DATA ACQUISITION
5. CONTACT DGSI 36
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GTecLink Datalogger Manual
About this document
This user guide explains the basic procedures for data acquisition with the GTecLink family of dataloggers
by DGSI and powered by Loadsensing. Further technical description is available in the datasheets.
The family of GTecLink data loggers by DGSI consists of six different dataloggers that may be used as
standalone data loggers (without remote communication) or radio dataloggers (with remote communication
through a gateway). Please note that we will use the terms datalogger and node interchangeable within this
manual. The models available are:
Data loggers
●52616001 - One Channel VW Datalogger, Polycarbonate
●52616011 - One Channel VW Datalogger, Aluminum
●52616015 - Five Channel VW Datalogger, Aluminum
●57801700 - GeoFlex Datalogger & Enclosed Power Supply
●57801705 - GeoFlex Datalogger
●57804800 - Four Channel Analog Datalogger
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GTecLink Datalogger Manual
1. DATA LOGGER INSTALLATION
1.1 Equipment
GTecLink dataloggers are shipped with the following accessories:
-Datalogger
-Antenna
-Antenna adapter
-RTC battery (if applicable)
Not included:
-USB-OTG configuration cable
-Batteries
-Sensor surge protection
-Grounding protection
-Mounting supports (if needed)
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GTecLink Datalogger Manual
1.2 Powering the data logger
The data logger arrives closed and without batteries installed. In order to initialize it, the user should
follow these steps:
a. Openthedatalogger(usinga2.5mmAllenwrench)followingtherecommendedpositions
(Figure 1) in order to avoid damaging the lateral gore valve. The batteries are inserted into the
cover, so be careful not to snap the cable between the cover and the main board.
Figure 1: View of the recommended positions to open the datalogger
b. InserttheRTCbattery(smallbatteryincluded).Firstremovetheupperenclosureofthe battery holder (Figure
2). Polarity is indicated inside the holder.
Figure 2: Removal of the upper enclosure of the battery holder
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GTecLink Datalogger Manual
The RTC battery keeps time in the data logger regardless of whether or not C-type batteries are also
inserted. The data logger always uses UTC time. However, the data can be visualized in local time in the
gateway or the Android configuration app. RTC battery is only available formultichannel dataloggers.
c. Insert C-type batteries in the battery holders. Between one and fourbatteriescanbe connected.
Polarity is indicated (see Annex 4 for further information on the batteries).
Note
: The device has reverse battery protection but it is not safe to keep batteries reversed in the
datalogger for a long time.
WARNING: RISK OF EXPLOSION IF INCORRECT BATTERIES ARE USED. DISPOSE OF BATTERIES
ACCORDING TO THE INSTRUCTIONS. THIS EQUIPMENT SHOULD BE INSTALLED IN
RESTRICTED ACCESS AREAS.
d. Check thatpowerswitch(SWA,Figure3)isinthecorrectposition.
USB:thedataloggeris powered by the USB cable connected to any Android device
BATT (default): the datalogger is powered by the batteries.
Note
:SomeAndroiddevicescannotpowerthedatalogger,especiallywhenperforming a reading. If
reading fails, set the switch to BATT mode in order to power the datalogger with batteries.
Figure 3: Detail of power switch (SW A)
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GTecLink Datalogger Manual
1.3 Sensor connection
Sensors are connected to the datalogger at the terminal blocks. Each terminal block corresponds to one
channel of the data logger. The terminal blocks accept wires that are prepared by stripping a short length of
insulation from the end.
Each data logger type has specificinstructionsforsensorwiring.Specificationsforeachmodel can be
found in sections: 3.1. (vibrating wire dataloggers), 3.2. (digital dataloggers) and 3.3. (analog
datalogger).
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GTecLink Datalogger Manual
1.3 Safely closing the datalogger
This is a very important step to ensure watertightness and durability of the logger. Close the cover by
cross-screwing to the indicated torque 2.5 N.m.
The GTecLink family of data loggers by DGSI have undergone watertightness testing by an external
laboratory and is rated IPX7 (1 meter for 30 minutes) and IPX8 for extended immersion (1 meter for 7 days).
To guarantee watertightness, you must be sure that:
●The box is closed in a cross-shaped order after sensorconnection.Allthescrewsmust first be
inserted and screwed in until they are connected to the box and then adjusted using the torque
wrench. If these steps are not followed, the base faces and cover may be not be parallel, screwing
may become more difficult and the screw threads or the Helicoil inserts may be damaged.
Moreover, the toric joint (seal) may not be properly sealed and the degree of protection against
water intrusion (IP) could not be guaranteed.
●The box is screwed at 2 N.m (for single channel dataloggers) or 2.5 N.m (for multiple
channel dataloggers) using a torque screwdriver (e.g. Ref. 1227107 from WERA).
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GTecLink Datalogger Manual
1
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●The cable glands are closed with a 19 mm open spanner (e.g. Bahco 19 mm Single Ended Open
Spanner; RS Amidata code 717-8992) and the internal nut is held with a 22 mm open spanner (e.g.
Bahco 22 mm Single Ended Open Spanner; RS Amidata code 717-8995).
●A piece of rubber rod to seal the unused cable glands is provided in each box.
●The antenna is mounted. If it is not, the antenna connector should be covered with a cap.
●The sealing ring has not been manipulated either physically or chemically.
●The sealing cap USB connector is coiled.
If any of these conditions are not met, or if one or several components (e.g. gore valve) are damaged,
IPX7 and IPX8 ratings cannot be guaranteed.
Should the datalogger need further sealing due to placement in an extreme environment or in a floodable
manhole, additional sealants will be required to close the box (e.g. Sikaflex products).
Note: Box screws shouldn’t be torqued more than 2.5 N.m, even though they can support a maximum torque of
3.5 N.m. If the torque is exceeded, the Helicoil insert may be damaged. We do not recommend using electric
drills or electric screwdrivers.
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GTecLink Datalogger Manual
Inhaltsverzeichnis
