Automatic Computerized Oedometer allows determines the rate and magnitude of consolidation of a soil specimen restrained laterally and subjected to a number of successive increments of vertical loads. In this automatic model, the incremental loading, in the load (stress) or swelling (strain) mode, is fully automatic for a practical and accurate test execution with more reliable test results. The ACE unit, the SHEARMATIC Automatic shear testing machine and AUTOTRIAX Automatic triaxial test systems, are the unique equipment for the complete automation of a CST (Consolidation, Shear, Triaxial) Soil Mechanics laboratory in the different configurations. Read more in our mega blog!
The ACE, Automatic Computerized oedometer, consists of a small and compact load frame housing two coaxial pneumatic cylinders: the smallest one for low loads and the other for higher loads, with automatic switch off from one to the other when needed. The load is controlled by a high precision pneumatic servo-valve. Two analogue channels: one for the displacement transducer and the other for the load cell with closed loop feedback control. The test end can be programmed on a time or on a step bases. The software can control from a single PC, up to 60 ACE units enabling the operator to choose from single to multiple control.
Test parameters are previously specified by the operator and set in the ACE software. Test results are recorded and displayed in real time on the PC and calculation are performed automatically. The test data can be processed by one of the Geo-Analysis Templates conforming to the BS or ASTM Standards.
The frame can accept all standard consolidation cells: from 50.47 to 112.80 mm dia. Consolidation cells, Geo-Analysis templates and test software not included. See acc essories. PC not included.
|Maximum Vertical Load||15 kN|
|Load Cell Cap||15 kN|
|Displacement Transducer||10 mm maximum travel|
|Maximum Air Pressure Supply||10 bar. If the air pressure line is not available in the laboratory, our Air compress model NG-D2015, 50L capacity may be used|
|Sample Dimensions||From 50.47 to 112.8 mm diameter using our consolidation cells. See accessories|
|Software||Can control up to 60 ACE units (not included, see accessories)|
|PC Connection||LAN Connection to PC|
|Test Data Accuracy||±1%|
|Overall Dimensions||11" x 11.8" x 23.6" / 28 x 30 x 60 cm|
|Approximate Weight||56lbs / 25 kg|
To perform either standard or permeability testing:
|Model||Specimen Dia. x Height [mm]||Specimen Area [cm2]||Cell Dimension Dia. x Height [mm]||Weight [kg]||Calibration Disk|
|NG-WF0320||50.47 x 20 mm||20 cm2||139 x 74 mm||1.3 kg||NG-WF0320/9|
|NG-WF0321||63.50 x 20 mm||31.67 cm2||139 x 74 mm||1.3 kg||NG-WF0321/9|
|NG-WF0325||71.40 x 20 mm||40 cm2||139 x 74 mm||1.3 kg||NG-WF0325/9|
|NG-WF0326||75 x 20 mm||44.16 cm2||139 x 74 mm||1.3 kg||NG-WF0326/9|
|NG-WF0335||112.80 x 25 mm||100 cm2||200 x 74 mm||3 kg||NG-WF0335/9|
The Automatic Computerized Oedometer (ACE) requires a maximum air pressure supply of 10 bar for optimal operation. This level of air pressure is necessary to effectively power the pneumatic components of the device, such as the servo-valves and cylinders, which are critical for applying accurate loads during soil testing.
In cases where a laboratory does not have an existing air pressure line suitable for this requirement, an alternative solution is provided. The recommended alternative is the Air compress model NG-D2015, which has a capacity of 50 liters. This air compressor model is designed to complement the ACE, ensuring that it receives the necessary air pressure for its functions.
The availability of this alternative air compressor model ensures that the ACE can be used in a wide range of laboratory settings, even those that do not have pre-existing pneumatic infrastructure. This flexibility enhances the usability and accessibility of the ACE, making it a practical choice for various soil testing applications in different environments. The provision of a dedicated air compressor model also guarantees that the ACE will operate efficiently and reliably, providing consistent results in soil mechanics testing.
The Automatic Computerized Oedometer (ACE) is designed to accommodate a wide range of soil sample sizes, specifically those with diameters ranging from 50.47 mm to 112.8 mm. This range of sample dimensions is facilitated by the use of consolidation cells, which are integral components of the ACE for holding and testing the soil specimens.
The ability to handle soil samples of various sizes allows the ACE to be versatile and applicable in a multitude of soil testing scenarios. It can be used to test small soil samples typically used in laboratory experiments, as well as larger samples that may be more representative of field conditions. This flexibility is particularly important in geotechnical engineering and soil mechanics, where soil properties can vary significantly based on sample size and type.
The inclusion of consolidation cells that can accommodate such a range of sample dimensions ensures that the ACE can be used for a broad spectrum of soil testing applications. Whether for academic research, construction project analysis, or civil engineering studies, the ACE's capability to test different-sized soil samples makes it a valuable and adaptable tool in soil mechanics laboratories.
The test data obtained from the Automatic Computerized Oedometer (ACE) boasts an impressive accuracy level, with a margin of error of only ±1%. This high level of accuracy ensures that the measurements and results generated by the ACE are extremely reliable and precise.
An accuracy of ±1% means that the data collected during soil testing - including measurements of soil deformation, load applied, and other critical parameters - is consistently close to the true value, with only a minimal potential deviation. This precision is crucial in soil mechanics and geotechnical engineering, where even small inaccuracies can significantly impact the interpretation of soil behavior and the decision-making process in construction and engineering projects.
The ACE's ability to provide such precise data reinforces its suitability for professional and academic applications where high accuracy is paramount. Whether for research purposes, construction planning, or engineering analysis, users can rely on the ACE to deliver dependable and precise soil test results, contributing to the overall quality and reliability of geotechnical evaluations and studies.
The Automatic Computerized Oedometer (ACE) has compact and manageable overall dimensions, making it suitable for various laboratory spaces. The dimensions are 11 inches by 11.8 inches by 23.6 inches, or in metric units, approximately 28 centimeters by 30 centimeters by 60 centimeters.
These dimensions reflect the ACE's design, which prioritizes space efficiency without compromising on functionality. The compact size allows it to be easily accommodated in different laboratory settings, even those with limited space. Despite its relatively small footprint, the ACE is fully equipped to perform a wide range of soil tests with the precision and accuracy required in soil mechanics and geotechnical engineering.
The balance between size and functionality in the ACE's design makes it an ideal choice for laboratories looking to optimize their space while maintaining a high standard of soil testing capabilities. This compact size, combined with its advanced features, ensures that the ACE is both a practical and powerful tool for soil analysis.
The Automatic Computerized Oedometer (ACE) has an approximate weight of 56 pounds, which is equivalent to about 25 kilograms. This weight indicates that the ACE is relatively lightweight for a piece of advanced soil testing equipment, contributing to its practicality and ease of handling in laboratory environments.
The moderate weight of the ACE makes it more manageable for transportation and installation compared to heavier equipment. This is particularly advantageous in scenarios where the oedometer may need to be moved or repositioned within the laboratory or transported to different locations. Despite its lighter weight, the ACE is designed to be sturdy and durable, ensuring that it can reliably perform a wide range of soil tests with the necessary precision and accuracy.
The weight of the ACE strikes a balance between portability and robustness, making it a user-friendly and efficient choice for soil mechanics testing in various settings.
The NG-WF0320 model in the Automatic Computerized Oedometer series has specific and detailed specifications tailored for soil testing. These specifications include:
The NG-WF0321 model in the Automatic Computerized Oedometer series is equipped with specific features for effective soil testing. The key specifications of this model include:
The NG-WF0325 model is a part of the Automatic Computerized Oedometer series and comes with a set of specific features designed for effective soil testing. The specifications for this model are as follows:
The NG-WF0326 model is a specialized unit within the Automatic Computerized Oedometer series, designed for precise soil testing. The key specifications of this model are:
The NG-WF0335 model, as part of the Automatic Computerized Oedometer series, is designed with specific attributes for conducting soil tests. The specifications for this model are:
GenMoist is designed to automatically and simultaneously dry and weight a solid sample for the determination of moisture content. The machine provides a continuous direct readout for both the weight and the percentage moisture loss through the entire cycle. It has a build-in timer.
The new MULTISPEED tester is the ideal solution for Road testing laboratory. The 50 kN capacity and the fully variable test speed of 0.2 to 51 mm/min make it possible to perform not only the CBR and Marshall tests, but many other applications as for instance Indirect Tensile test, Quick Triaxial tests, Unconfined and Uniaxial soil testing and, in general, all test to be performed under displacement control. The machine can be equipped with analogical or digital load/displacement measurement systems as well as with the specific accessories, to suit either the field or central laboratory requirement.
Dynatriax systems are ideal for commercial and research laboratories for the following applications: Liquefaction potential, Strength degradation due to cyclic loading, Shear modulus and damping ratio, resilient modulus, Effects of blasting in mines and quarries, Effect of ocean waves on costal and off shore structures.
This test determines the rate and magnitude of consolidation of a soil specimen restrained laterally and subjected to a number of successive increments of vertical loads.
The SHEARMATIC 300 automatic machine is ideal for testing geosyntetics and also soil and other materials that contain large particles of up to 20 mm largest dimension. Sample size up to 300 mm square can be tested, with inserts allowing the testing of smaller sample sizes. See accessories.
RESONANT COLUMN combines the features of both resonant column and torsional shear into a single unit including the current driven motor to apply torsional load to sample, a series of transducers with signal conditioning, a cell and back pressure electro-pneumatic control system and a data logger.
The microprocessor control system, therefore, allows the machine to work as an automatic stand-alone unit: the test measurements (force and displacements) a re directly displayed and stored in memory according to pre-set recording modes. The PC is only temporary required to download the test data via the RS 232 port once the test is completed. The data can be processed by the Direct and residual shear Geo-Analysis templates. See accessories.
This microprocessor based advanced model, is a stand-alone machine, driven by a high-resolution stepper motor with epicyclical reduction gear with reduced backlash. Incorporate a pneumatic closed loop system for the automatic application of the axial pressure by a high performance pressure regulator, with the main advantage of eliminating the manual loading of the dead weights. Excellent and high resistance techno-polymeric material has been adopted for the carriage of the shear box. It offers excellent resistance to corrosion, wear and tear and is resistant to all chemicals found in a soil specimen. The carriage is lightweight and easy to clean.
The laboratory vane apparatus is based on an original concept of the Transport and Road Research Laboratory of the United Kingdom. It can be provided with a wide range of vane sizes, although as standard, it is sold with the 12.7 mm square vane and a set of four calibrated springs. The test can be performed directly on the sample or in the sample contained in the sampling tube. In this case the NG-WF1736 Attachment for 38 and 100 mm dia. sampling tubes, should be used. See accessories.