Controls Group http://www.controls-group.com/images/logo_controls.gif Automatic Computerized Oedometer ACE EmS Automatic Computerized Oedometer ACE EmS WF31E20
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Soil mechanics

Automatic Computerized Oedometer ACE EmS

An advanced system featuring the PC automated control of the complete consolidation test

  • Download:
BS 1377:5 | ASTM D2435 | ASTM D3877 | ASTM D4546 | NF P94-091 | EN 17892:5
Main features
  • Versatile fully automatic Oedometer soil consolidation testing machine featuring incremental loading, swelling, CRS (constant rate of strain), CHG (controlled hydraulic gradient) and unconfined test.
  • Environmentally friendly and quiet — the ACE EmS benefits from the new Electromechanical Servoactuation (EmS) technology requiring no dead weights or large & noisy air compressors, thus drastically reducing noise levels.
  • Modular and expandable, gradually connect up to 60 units via LAN port using the same PC software allowing you to build your laboratory without interruption — resulting in excellent return on investments.
  • Small footprint featuring a benchtop shorter than 50 cm.
  • Highly performant with load capacity of up to 20 kN, equivalent to 10,000 kPa on 50.47mm Oedometer consolidation cell.
  • Optimized PID closed-loop control delivering fast, smooth and accurate loading and precise load holding through the multiple test steps.
  • Optional local user interface with 6” touch screen high resolution color display allowing full control of a single unit, without a PC, including full test execution. USB pen drive included for unlimited storage, TXT format data output.
General description
General description
The ACE EmS is a versatile and fully automatic Oedometer soil consolidation testing machine that comes loaded with the new environmentally friendly Electromechanical Servoactuation (EmS) technology. Silent, compact and highly performing, the ACE EmS testing system can be run with our ingenious software that can connect up to 60 units with just one PC, enabling you to expand your laboratory gradually and seamlessly.
 
Oedometric soil test description
The Oedometric test determines the rate and magnitude of soil consolidation when restrained laterally and loaded axially. 
 
Fully automatic
The ACE EmS can complete the whole test in fully automatic mode by selecting the load (stress), offering a practical and accurate way to obtain reliable results without any need for manual intervention, reducing the risk of human error.
 
Totally new and ingenious software
  • Can pilot up to 60 ACE EmS units from one single PC with user able to select single or multiple unit batches.
  • Once the software is installed and linked to the first ACE EmS, it is easy to add more units by enabling the associated LAN communication (IP address) without complications or costs.
  • Calibrations of displacement transducers and load cells are stored as txt file and easy to recall, up to 10 calibration points can be recorded for each channel.
 
Clarity in results
  • Oedometer test results are saved and displayed in real-time, speeding data capture.
  • Results are then processed using Wykeham Farrance (WF)’s easy-to-use Geo-Analysis templates, written by experts around international standards allowing you to concentrate on analyzing your materials; not on programing your testing machine.
 
Interchangeable consolidations cells
  • Standard WF consolidation cells from 50.47 to 112.80mm dia. normally used with front loading oedometer can also be used with the ACE EmS.

Standard test method 
  • ASTM D2435 - Standard Test Methods for One-Dimensional Consolidation Properties of Soils Using Incremental Loading
  • ASTM D4546 - Standard Test Methods for One-Dimensional Swell or Collapse of Soils
  • ASTM D3877 - Standard Test Methods for One-Dimensional Expansion, Shrinkage, and Uplift Pressure of Soil-Lime Mixtures 
  • BS 1377:5 - Methods of test for soils for civil engineering purposes. Compressibility, permeability and durability tests
  • EN 17982:5 - Geotechnical investigation and testing. Laboratory testing of soil. Incremental loading oedometer test
More +

Technical specifications

  • Maximum vertical force: 20 kN
  • Ram travel: 25 mm
  • Minimum testing speed: 0.00001 mm/min
  • Maximum testing speed: 50.00000 mm/min
  • Horizontal clearance: 175 mm
  • Vertical Clearance: 185 mm (265 mm with extension columns)
  • Dimension: 285 x 390 x 590 mm
  • Weights 40 kg (approx.)
  • Power: 220-110 V, 50-60 Hz, 1 ph
  • Power consumption: 600 W

Ordering info

26-WF31E20
ACE EmS - Electromechanical Servoactuation, automatic oedometer machine.
100-220 V, 50-60 Hz, 1 ph

Software
Important: either the software or the local user interface (see below) are mandatory for running the machine

26-WF31E20/SW
PC software for remote control and data acquisition up to 60 units connectable to a single PC.

26-WF31E20/T (as alternative)
Optional local user interface with 6” touch screen high resolution color display allowing full control of a single ACE EmS including full test execution.
No need of PC and software 26-WF31E20/SW for test execution
Numerical and graphical display of the readings
Data are recorded on USB pen drive for unlimited storage capacity. TXT format data output

Accessories

Consolidation cells
It includes loading pad, 2 porous stones, clamping ring and cells.
Code 26- WF0320 WF0321 WF0325 WF0326 WF0335
Sample diameter  [mm] 50.47 63.5 71.40 75 112.8
Height [mm] 20 20 20 20 25
Area [mm2] 20.00 31.67 40.00 44.16 100.00
Calibraton Disk 26- WF0320/9 WF0321/9 WF0325/9 WF0326/9 WF0335/9
 

Data processing template
30-WF6016/T1 
Consolidation Geo-Analysis template conforming to BS 1377:5

30-WF6016/T8 
Consolidation Geo-Analysis template conforming to ASTM D2435

30-WF6016/T8A  
Consolidation Geo-Analysis template conforming to ASTM D4546

Upgrading

Constant Rate of Strain - CRS - configuration

Code Description Q.ty
26-WF31E20 ACE EmS - Electromechanical Servoactuation, automatic oedometer machine. 220-100 V / 50-60 Hz/ 1 PH                 1
Extension rods
28-WF31E20/E ACE EmS extension roads and centering pin for CRS (Constant rate of strain) and Unconfined (UC) test 1
CRS cell and accessories
28-WF0360/A CRS cell suitable for external load cell 1
28-WF0360/1 Accessories for preparation of CRS specimen 1
Pressure system
28-WF45SG Hydromatic standalone pressure/volume controller, single pressure line. 3500 kPa capacity 1
28-WF4191 Nylon tubing 6mm bore x 8 mm outside dia., 10 m lenght 1
Pressure transducer
28-WF6302/A Pressure transducer 0-3500 kPa 1
28-WF6310 De airing block for connection to CRS cell 1
De airing water system
27-WF4220/A De airing water tank 7 lt capacity 1
86-D2001 Portable vacuum pump free air displacement 75l/min, ultimate vacuum 0.1 mbar. 230V/50-60Hz/1Ph 1
86-D2064 Rubber tube for vacuum pump 1
86-D2005 Air drying unit, to use with silica gel with indicator 1
86-D0819 Silica gel with indicator. 1000 g 1
28-WF4225 Valve panel for use with de-airing tank 1
28-WF2016/2 Water trap for air/water assembly 1
28-WF4191 Nylon tubing 6mm bore x 8 mm outside dia., 10 m lenght 1








































Unconfined -UC - configuration

Code Description Q.ty
26-WF31E20 ACE EmS - Electromechanical Servoactuation, automatic oedometer machine. 220-100 V / 50-60 Hz/ 1 PH                 1
Extension rods
28-WF31E20/E ACE EmS extension roads and centering pin for CRS (Constant rate of strain) and Unconfined (UC) test 1
Base and upper platens
26-WF31E20/U Upper and lower platens with mounting bracket for Unconfined (UC) test with ACE EmS. 1
Displacement transducer
30-WF6208 Linear potentiometric transducer 25 mm travel 1


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