Rincent Minidyn V9 Manuale utente
Rincent ND Technologies 4 bis rue du bois briard 91080 Courcouronnes
Tél. : 09 72 32 45 98
SARL au capital de 300 000 euros n° de SIREN 431 715 689
Rincent Minidyn
LightWeigth Deflectometer
User manual
Version 9 : Junary 2021
Rincent ND Technologies Minidyn User Manual Page 2
Rincent ND Technologies Minidyn User Manual Page 3
Table of content
1
Minidyn description ...................................................................................................... 5
1.1
Hardware description .............................................................................................................. 5
1.2
Specifications ........................................................................................................................... 8
1.3
Transport ............................................................................................................................... 10
1.
Drop weight swap .................................................................................................................. 10
1.5
Acquisition case ..................................................................................................................... 11
1.5.1 Description ......................................................................................................................... 11
1.5.2 Power-on and power-off .................................................................................................... 12
1.5.3 Charge ................................................................................................................................ 13
1.6
Measurement ........................................................................................................................ 1
1.6.1 Preparation ........................................................................................................................ 1
1.6.2 Make a test point ............................................................................................................... 1
1.7
Precaution of use ................................................................................................................... 16
1.7.1 Load cell ............................................................................................................................. 16
1.7.2 Weather ............................................................................................................................. 16
2
Modulus calculation.................................................................................................... 17
2.1
Modulus calculation steps ..................................................................................................... 17
2.2
Stiffness calculus algorithms .................................................................................................. 18
2.2.1 Max method ....................................................................................................................... 18
2.2.2 Integral method ................................................................................................................. 18
2.2.3 Method comparison ........................................................................................................... 20
2.3
Boussinesq formulae ............................................................................................................. 20
2.
Correlation algorithms ........................................................................................................... 21
2. .1 Linear correlation ............................................................................................................... 21
2. .2 Exponential correlation ...................................................................................................... 22
3
Minidyn software for Android .................................................................................... 23
3.1
Installation and first launch ................................................................................................... 23
3.1.1 Installation ......................................................................................................................... 23
3.1.2 Bluetooth pairing ............................................................................................................... 23
3.1.3 Fist launch .......................................................................................................................... 2
3.2
Main interface ....................................................................................................................... 25
3.3
Settings .................................................................................................................................. 25
3.3.1 Modulus tab ....................................................................................................................... 26
3.3.2 Acquisition configuration ................................................................................................... 26
3.
Data managements ............................................................................................................... 27
3.5
Project and report ................................................................................................................. 28
3.5.1 Project ................................................................................................................................ 28
3.5.2 Report ................................................................................................................................ 28
3.6
Make measurements ............................................................................................................. 29
3.6.1 Test measurements ............................................................................................................ 29
Rincent ND Technologies Minidyn User Manual Page 4
3.6.2 Project and report selection............................................................................................... 29
3.6.3 Make a measurement ........................................................................................................ 29
3.7
Exportation ............................................................................................................................ 30
Warranty .................................................................................................................... 31
Rincent ND Technologies Minidyn User Manual Page 5
1Minidyn description
1.1 Hardware description
The lightweight deflectometer (LWD) Minidyn is available in different versions depending
of the fabrication date:
-Up do 2013 : Minidyn version 1
-From 201 to 2016 : Minidyn version 2
-Since 2017 : Minidyn version 3
-Since 2019 : Minidyn version
-Since 2020 : Minidyn version 5
-Since 2021 : Minidyn version 6=
Figure 1: Lightweight deflectometer. Version 3 (left), 2 (middle) and 1 (right).
Versions 2 and 3 improve the ergonomic and aesthetic of the Minidyn. The use of the
Minidyn both software and hardware are the same regardless of the version. Performances
and results are also the same.
Rincent ND Technologies Minidyn User Manual Page 6
Since version , the rod is made into wo part that can be fitted in one transport case.
The measurement plate contains all the electronic and sensors of the instrument:
-Load cell
-Displacement sensors
-Acquisition case
-Data transmission
Figure 2 : Measurement plate.
The acquisition case is autonomous and send measurement date via USB or Bluetooth.
User can either:
-Connect to the case using USB cable and Minidyn software on Windows.
-Connect to the case using Bluetooth using an Android smartphone.
Transferring measurement data from the smartphone to a Windows PC is done by:
-Sending an email containing the data.
-Connecting the smartphone to a computer using USB cable.
The following options are available:
-Extension of the measurement range to 120 MPa :
o200mm rod extension
Transport
handle
Acquisition case
Load cell
Rincent ND Technologies Minidyn User Manual Page 7
o20kg falling weight
o2 additional buffers
-Transport case.
-Transport trolley
The Minidyn instrument is separated in two different part:
-Measurement plate with sensors and acquisition.
-Guiding rod with falling weight and elastomer buffer.
Assembling the Minidyn is done by sliding the rod at the top of the plate and securing both
using and the safety pin.
Figure 3 : Assembling the Minidyn using the safety pin.
Rincent ND Technologies Minidyn User Manual Page 8
1.2 Specifications
Specifications Value
Hardware Minidyn version 6
Weight without mass 15 Kg
Falling weight 10 Kg or 20 Kg
Plate diameter 300 mm
Materials Anodized aluminum
Falling height 75 cm to 100 cm
Environment IP65
-20°C to + 0°C
Load cell Strain gauge
Max load: 25 kN
Error: < 0.3% FS
Displacement sensor Vertical geophone
Frequency range: .5Hz…2500Hz
Resolution: 1µm
Modulus range 10 Kg weight : 10MPa to 80 MPa
20 Kg weight : 20MPa to 120 MPa
Power Battery powered
USB charger (5 V, 0.5 A)
Data transfer USB or Bluetooth
utonomy 30 h on standby
5 h on measurement
Automatic shutdown after 15 min
Tableau 1: Minidyn hardware specification.
Rincent ND Technologies Minidyn User Manual Page 9
Specifications Value
Type Rugged Android smartphone
Résistance IP67 rating
Choc resistant
Screen ‘’WVGA
Data transfer Email using Wi-Fi or 3G
Direct transfer using USB
Storage capacity > 100 000 measures
Software installed Minidyn Android
Functions Acquisition et review
Connection Bluetooth
Stiffness method Max
Correlation method Boussinesq, Linear et Exponential
Tableau 2: Minidyn software specification.
Rincent ND Technologies Minidyn User Manual Page 10
1.3 Transport
It is recommended to transport the Minidyn in two parts and take one part in each hand.
Figure 4 : Transport de la Minidyn.
Since version 2, the Minidyn can be transported in one piece using the handle at the base
of the plate.
1.4 Drop weight swap
You can easily change drop weight by unscrewing the top handle.
Figure 5 : Top handle removal.
Indice
