Data Acquisition System

Geotechnical data acquisition unit - GEODATALOG8
 
Dataloggers are used to acquire, display in real time and store data for a wide variety of laboratory soil mechanics testing equipment, such as Oedoemeters, Shear Machines and Triaxial Systems A datalogger can connect the majority of the sensors typically used in a laboratory testing, such as load cells, displacement transducers, volume change, pressure transducers and other type of sensors. Moreover, the software supplied with your datalogger delivers a robust data acquisition and calibration procedure. Data can be post-processed and reported according to the most important International Standards using Wykeham Farrance’s Geo-Analysis pre-designed templates.

Data Acquisition Unit, GEODATALOG 8

Multipurpose automatic datalogger to be used with standard soil mechanics machines.

Geotechnical data acquisition unit - GEODATALOG8
Description

 

GEODATALOG 8  is a multipurpose data logger which works directly connected to a PC. Data are automatically transferred to the PC in real time for live monitoring of the tests progress.
GEODATALOG 8 records and monitors in real time the measurements requested for soil mechanics testing, as: consolidation, shear, triaxial, permability and many others.
It is compatible with strain gauge load cells, pressure transducers, linear LDT transducers, LVDT conditioned transducers, potentiometric displacement transducers.
GEODATALOG 8 is conceived with a modular and flexible concept: up to 8 instruments can form a network and then create a modular system with up to 64 independent channels.
The data acquisition unit is supplied complete with general purpose  DATACOMM 2 PC software for fully comprehensive data management of both GEDOTALOG 8 and HYDROMATIC.
DATACOMM 2 software combines  the active channels into customizable groups by the operator. Data acquisition for each group is an independent task which can be started/stopped automatically with specific acquisition and logging mode.
Software allows remote calibration of the connected sensors up to 10 points with polynomial fitting curve up to eight degree. 
ASCII  format data export is available for combination with our geotechnical Geo-Analysis-Templates suitable for post-processing and printout of test certificates according to the most important international Standards.
 
Main Features

 

  • Up to 8 independent input channels.
  • Network configuration of up to 64 independent channels.
  • LAN / Ethernet connection to PC via dedicated software (included).
  • Compatible with load cells, pressure transducers, strain gauges, LDT/LVDT/potentiometric displacement transducers.
  • Effective resolution: 131,000  points.
  • Sampling rate up to 500 readings per second per channel.
  • Numerical and graphical display of readings via PC software.
  • Possibility to synchronize pressure and volume data coming from HYDROMATIC with data from the other transducers connected
  • The transducers can be grouped and combined  by the user for matching different applications.
  • It is possible to perform various tests (e.g. shear, consolidation, triaxial, … ) in parallel, each one having independent clock, channels and logging mode
Products
 
 
30-WF6008

GEODATALOG 8, 8 channels multipurpose data logger with dedicated software DATACOMM 2. 

Technical Specifications
  • Requires connected PC
  • Number of channels: 8
  • Network mode: Up to 8 units
  • Sampling rate: Up to 500  readings/second per channels
  • Real resolution:131,000 points
  • Communication port: LAN / Ethernet
  • Excitation (VEXC): from 1 V to 10 V for each couple of channels (up to 4)
  • Datalogger input: 0-10 V; 0-20 mA
  • Software:   DATACOMM 2 (included)
  • Dimensions  approx lxdxh [mm]:290x195x61
  • Weight approx [kg]: 1.6 kg
  • Power supply: 110-220V,50-60 Hz, 1ph
Accessories and Spare Parts
 
 
82-P9008/ELT
Set of four cables for connecting load cells, pressure transducers, strain gauges, LDT / LVDT / potentiometric type displacement transducers to DATALOG 8 (82-P9008) and GEODATALOG 8 ( 30-WF6008)
 
30-WF6042
Transducer extension cable, 6 m length
 
30-WF6044
Transducer extension cable, 12 m length
 
30-WF6016/T10
Total stress(UU)triaxial testing Geo-Analysis template conforming to ASTM 2850
 
30-WF6016/T11
Effective stress (CU-CD) triaxial testing Geo-Analysis template conforming to ASTM D4767
 
30-WF6016/T12
Hydraulic Consolidation Geo-Analysis for MS-EXCEL Template according to BS 1377:6
 
30-WF6016/T13
Hydrocon SWCC Geo-Analysis for MS-EXCEL Template
 
30-WF6016/T14
Permeability Geo-Analysis template. MS Excel application for importing test data, calculating and plotting results and producing test report in accordance with BS1377: 6
 
30-WF6016/T15
Unconfined Geo-Analysis template according to ASTM D2166
 
30-WF6016/T17
CBR Geo-Analysis for MS EXCEL Template according to ASTM D1883
 
30-WF6016/T4
Effective Stress (CU,CD) Triaxial testing Geo-Analysis for MS EXCEL Template according to BS 1377:8
 
30-WF6016/T5
Total Stress (UU) Triaxial testing Geo-Analysis for MS EXCEL Template according to BS 1377:7
 
30-WF6016/T6
CRS type Consolidation Geo-Analysis for MS EXCEL Template according to ASTM D4186
 
30-WF6016/T7
CBR Geo-Analysis for MS EXCEL Template according to BS 1377:4
 
82-P9008/ELT1
Cable for connecting load cells, pressure transducers, strain gauges, LDT / LVDT / potentiometric type displacement transducers to DATALOG 8 (82-P9008) and GEODATALOG 8 ( 30-WF6008)
 
30-WF6016/T2
Direct and residual Shear Geo-Analysis for MS EXCEL Template according to BS 1377:7
 
30-WF6016/T9
Direct and residual shear Geo-Analysis template conforming to ASTM D3080
 
30-WF6016/T1
Consolidation Geo-Analysis for MS EXCEL Template according to BS 1377:5
 
30-WF6016/T8

Consolidation Geo-Analysis template conforming to ASTMD2435

 
30-WF6016/T8A
Consolidation Geo-Analysis template conforming to ASTM D4546
 
30-WF6016/T16
Ring Shear Geo-Analysis MS EXCEL template conforming to ASTM D6467
 
30-WF6016/T3
Ring Shear Geo-Analysis for MS EXCEL Template according to BS 1377:7
 

Calibration Equipment for Geotechnical Laboratory

Used for verifying periodically the calibrations of their electronic sensors.

Stainless steel loading seat for load cell model 30-WF0372/SIT and 30-WF0373/SIT
Description

 

Any laboratory needs to verify periodically the calibrations of their electronic measuring systems, in order to produce reliable and accurate results. Equipment for calibrating force, displacement, volume change and pressure measuring devices.

Force measurement 

For calibration of force measuring devices we propose the following load cells fitted with digital readout unit, supplied complete with ACCREDIA calibration certificate according to EN ISO 376.

Pressure measurement 

Pressure calibrations are performed with a digital pressure gauge, supplied complete with ACCREDIA calibration certificate.

Volume change 

Calibration of the volume change apparatus can be simply performed by weighing the water coming out of the device, using any digital balance with 0.01 g resolution,


Displacment Measurement 

Calibration of displacement measuring devices can be performed with either the analogue or digital micrometer 25 and 50 mm travel respectively, 0.001 mm resolution. They are both available, optionally, with a traceable calibration certificate 25 mm and ACCREDIA certificate 50 mm 

Local strain measurement 

The calibration is performed with a special device that can also be used for standard linear displacement transducers with up to 50 mm travel.

 

Products
 
 
30-WF0372/SIT
5kN load cell complete with ACCREDIA calibration certificate and stainless steel loading seat. Certificate issue and calibratin require the load cell to be ordered with the digital load gauge
 
30-WF0373/SIT
50kN load cell complete with ACCREDIA calibration and stainless steel loading seat. Certificate issue and calibration require the load cell to be ordered with the digital load gauge
 
30-WF0652
Calibration device for linear transducers up to 25mm travel. It consists of a steel frame with micrometer gauge head 25mm travel x 0,001mm res.
 
30-WF0652/C
Calibration device for linear transducers up to 25mm travel. It consists of a steel frame with micrometer gauge head 25mm travel x 0,001mm res. Complete with traceable calibration certificate.
 
30-WF0653
Calibration device for displacement transducers up to 50mm travel. It consists of a steel frame with digital micrometer 50mm travel x 0,001mm res.
 
30-WF0653/C
Calibration device for linear transducers up to 50mm travel. It consists of a steel frame with digital micrometer head 50mm travel x 0,001mm res.Complete with ACCREDIA calibration certificate.
 
30-WF0653/K

Calibration Device for Mini-On sample transducers for local strain measurement in triaxial testing and also standard linear displacement transducers up to 50 mm travel.

30-WF6305/SIT
50bar digital pressure gauge complete with ACCREDIA calibration certificate for pressure transducers calibration purposed
 
30-WF6601
Digital load gauge for load cells
Technical Specifications

Force measurement 

Load cell

– Linearity: <=0.03%
– Hysteresis: <=0.03%
– Repeatability: <=0.01%
 

Digital readout unit 

– Accuracy: <=0.02%
– Standard resolution: (2mV/V) ± 25000 div.
– Internal resolution: ± 32000 div.
– Zero and peak functions
– Auto power off function.
– Supplied with four 1.5 V AA size alkaline batteries.
– Typical battery life 1 year.


Pressure measurement 
– Linearity and hysteresis: <=0.05%
– Internal resolution: 65000 div.
– Zero and peak function
– Auto power off function.
– Supplied with four 1.5 V AA size alkaline batteries.


Displacment Measurement  

Code30-WF065230-WF065330-WF0653/K
TypeAnalogue/mechanicalDigitalDigital
Maximum travel [mm]255050
Resolution [mm]0.0010.0010.001
Dimesions (wxdxh) [mm]260x60x100300x60x107300x60x107
Weight [ kg]0.61.51.6

 

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