Geotechnical Consulting & Test Systems (GCTS), USA

Geotechnical Consulting and Testing Systems (GCTS) provides advanced testing solutions for Research in Geotechnical & Pavement materials. GCTS also helps in design of laboratory and in-situ testing apparatus and software ranging from modification and adaptation of existing apparatus to the purchase of new closed-loop computer-controlled systems. The company manufactures a full line of computer-controlled testing systems with either pneumatic or hydraulic loaders. Each system comes with a versatile software package which provides test control, data acquisition, data reduction, and graphing in one easy to learn Graphical User Interface.

Geotechnical Consulting & Test Systems (GCTS), USA

 

Advanced Computer Aided Testing Software (CATS-ADV)

The new GCTS CATS Advanced 32 bit Windows software, coupled with our new SCON electronics, is the most advanced Testing software available today. This software has simplified the operation of our instruments allowing the user to directly program test calculated parameters in the units of interest (stress, strain, etc.) based on the specimen dimensions.

Air/Oil Pressure Booster (HPC-070)

GCTS Air/Oil Pressure Boosters are very easy to operate and provide an economical alternative to servo-controlled pressure intensifiers. Air source from a 3 to 5 H.P. air compressor is sufficient to drive these pumps.

Asphalt Coring Machine(ACD-150)

The GCTS Laboratory Coring Machine is capable of achieving a large range of spindle speeds to provide optimum performance when preparing test specimens, regardless of the properties of the material being sampled.

Asphalt Mixture Performance Tester (AMPT-15)

The AMPT-15 is servo-hydraulic Asphalt Mixture Performance Tester designed to perform dynamic modulus, flow number and flow time tests as specified by NCHRP, AASHTO and other relevant standards. The AMPT-15 is designed to maximize the test efficiency through intuitive design and innovative software.

Asphalt Pavement Tester (APT-100E)

The GCTS APT-100E is a very affordable device that can perform a complete assortment of testing procedures for asphalt concrete. The equipment was designed in a modular fashion, which allows the user to quickly set up different tests.

Automated Dynamic Modulus Testing System (ADM-100)

The GCTS ADM-100 Automated Dynamic Modulus Testing System is the most productive dynamic modulus testing system on the market. With its advanced automation process, a complete Master Curve can be generated for up to six specimens in less than two days.

Circumferential Velocity Anisotropy Apparatus (CVA-100)

The GCTS CVA-100 Circumferential Velocity Anisotropy Apparatus is used to determine the compression P-wave velocities and shear S-wave velocities in rock core specimens in different orientations.

Compression Frames (FRM4-1000)

GCTS Compression Frames are typically operated with our Digital Servo Control software and hardware package that includes the electro-hydraulic power unit, servo valve, sensors, computer interface, and testing software.

Compressional Wave Velocity Test system (ULT-2P)

The ULT-2P Ultrasonic Velocity Test System is designed to obtain compressional wave velocities in specimens. The ULT-2P can easily integrate with the GCTS PLT Point Load Testers to capture the P-wave velocity of test specimens during loading at any specified internal.

Controlled Gradient Consolidation Apparatus (CRX-TRX)

The GCTS Consolidation Apparatus is capable of performing Controlled Gradient (CG), Constant Rate of Strain (CRS), and Incremental (conventional) consolidation tests. The device is to be used inside the triaxial chamber and loading frame.

Cyclic Hydraulic Soil Triaxial System (STX-100)

The STX-100 triaxial testing system is intended for performing dynamic tests for liquefaction, resilient modulus, cyclic strength, complex modulus, and other dynamic triaxial tests including synchronized cyclic axial and confining stress loading.

Cyclic Hydraulic Soil Triaxial System (STX-200)

The STX-200 triaxial testing system is intended for performing dynamic tests for liquefaction, resilient modulus, cyclic strength, complex modulus, and other dynamic triaxial tests including synchronized cyclic axial and confining stress loading.

Cyclic Hydraulic Soil Triaxial System (STX-300)

The STX-300 triaxial testing system is intended for performing dynamic tests for liquefaction, resilient modulus, cyclic strength, complex modulus, and other dynamic triaxial tests including synchronized cyclic axial and confining stress loading.

Cyclic Pneumatic Soil Triaxial System (STX-050)

The triaxial testing system is intended for performing conventional triaxial tests, namely a constant rate of strain axial compression test, as well as advanced procedures such as Ko test and stress/strain path.

Differential Strain Curve Analysis Measurement Device (DSA-12)

The GCTS Differential Strain Curve Analysis Measurement Device (DSA-12) is designed for testing cubical rock specimens under hydrostatic conditions in order to determine the in-situ stress state.

Diffused Air Flushing Device (DAF-200)

GCTS Diffused-Air Flushing device is an accessory designed to eliminate diffused air bubbles formed beneath ceramic plates during unsaturated soil testing such as triaxial, direct shear, and SWCC.

Digital Point Load Testing System(PLT-100)

The GCTS Point Load Tester is an apparatus made of high strength anodized-aluminum that incorporates digital technology to increase precision and ease of use while reducing its size and weight.

Digital Rock Direct Shear System (RDS-100)

The GCTS Direct Shear System for Testing Rocks is a simple device for testing a wide range of rock specimen configurations. Cylindrical cores, cubes, prisms and rock fragments can be used to determine the Shear Strength.

Direct Shear Testing System for Asphalt(SDS-150)

This system features electro-hydraulic closed-loop digital servo control of the shear and normal loads for test automation. Loads or deformations for both the shear and normal actuators can be prescribed for automatically performing conventional direct shear tests as well as more advanced tests.

Direct Shear Testing System for Soils (SDS-100)

The system features electro-hydraulic closed-loop digital servo control of the shear and normal loads for test automation.

Direct Shear Testing System for Soils And Asphalts (SDS-150)

This system features electro-hydraulic closed-loop digital servo control of the shear and normal loads for test automation.

Dynamic Hollow Cylinder Testing System

The GCTS Dynamic Hollow Cylinder Testing System allows Direct Digital Servo Control of axial load, torque, confining pressure, internal pressure for performing 'true triaxial' tests.

Dynamic Hollow Cylinder Testing System (HCA-100)

Direct digital servo control of axial load, torque, confining pressure, internal pressure, and back pressure are achievable using the GCTS Dynamic Hollow Cylinder Testing System for performing "true triaxial" tests.

Dynamic Loading System(DLS-050)

This equipment was designed and developed for the investigation of masonry wall behavior during seismic loading. It can also be used to establish reduction factors to the elastic design spectrum.

Fast Pulse-Decay Permeability Test Apparatus (HPPD-20)

The GCTS Fast Pulse-Decay Permeability Apparatus (HPPD-20) is designed for measurement of permeability in micro-porous material such as gas shale and other reservoir rocks, in order determine the capacity and flow characteristics of the rock matrix.

Fredlund Thermal Conductivity Sensor (FTC-100)

The Fredlund Thermal Conductivity Sensor is an unsaturated soil sensor for measuring soil suction and temperature in the field. The system consists of ceramic-tipped sensors, a suction sensor controller (datalogger), and a power supply.

Frozen Soil Triaxial System (FSTX-100)

The GCTS Frozen Soil Triaxial System uses a computer controlled metering valve and an internal copper vaporization coil for controlling test temperatures below the ambient room temperature.

Hamburg Wheel-Tracking Tester (HWTT-100)

The GCTS HWTT-100 Hamburg Wheel-Tracking Tester is used to test submerged, compacted Hot Mix or Warm Mix Asphalt specimens as per AASHTO T 324 standard.

Heavy Duty Laboratory Coring Machine (RCD-200)

The GCTS Laboratory Coring Machine is capable of achieving a large range of spindle speeds to provide optimum performance when preparing test specimens, regardless of the properties of the material being sampled.

High Pressure Triaxial Cell (HTRX-020)

The GCTS High Pressure Triaxial Cell was designed for testing 75 mm (3 inch) rock specimens with lengths of up to 160 mm at confining pressures of up to 20 MPa and axial loads of up to 400 kN. Other specimen diameters can also be tested with the use of optional platens.

High Pressure Triaxial Cell (HTRX-070)

The GCTS High Pressure Triaxial Cell was designed for testing 75 mm (3 inch) rock specimens with lengths of up to 127 mm at confining pressures of up to 70 MPa and axial loads of up to 1,000 kN. Other specimen diameters can also be tested with the use of optional platens.

High Pressure Triaxial Cell (HTRX-070L)

The GCTS High Pressure Triaxial Cell was designed for testing rock specimens with diameters up to 100 mm (4 inch) and 200 mm (8 inch) lengths at confining pressures of up to 70 MPa and axial loads of up to 1,000 kN. Other specimen diameters can also be tested with the use of optional platens.

High Pressure Triaxial Cell (HTRX-140)

The GCTS High Pressure Triaxial Cell was designed for testing (NX size 54mm diameter) rock specimens with lengths of up to 120 mm at confining pressures of up to 140 MPa and axial loads of up to 2,500 kN. Other specimen diameters can also be tested with the use of optional platens.

High Pressure Triaxial Cell (HTRX-200)

The GCTS High Pressure Triaxial Cell was designed for testing (NX size 54mm diameter) rock specimens with lengths of up to 120 mm at confining pressures of up to 200 MPa and axial loads of up to 3,000 kN. Other specimen diameters can also be tested with the use of optional platens.

Hydraulic Fracture Test System(HFRTC-100)

The GCTS Hydraulic Fracture Test System is capable of performing not only basic static and dynamic triaxial tests, but also hydraulic fracture, well bore stability and permeability tests.

Hydraulic Fracturing System(HFT-70)

The GCTS Hydraulic Fracture Tester allows for the performance of fracture tests with HPVC pressure intensifier. This fixture is typically used for hydraulic fracture, well bore stability, and permeability tests.

Indirect Tension (Brazilian) Apparatus for Rocks (RIT-B)

The GCTS IDT-B Rock Apparatus is used for determining indirect tensile strength by the Brazil test according to the International Society for Rock Mechanics standard.

Large Scale Cyclic Soil Triaxial System (STX-600)

The STX-600 triaxial testing system is intended for performing dynamic tests on soils with large particle sizes such as gravelly soils and railway ballasts. The triaxial cell accepts 300 mm diameter samples with heights up to 700 mm.

Large Scale Dynamic Hollow Cylinder System (HCA-600)

Direct digital servo control of axial load, torque, confining pressure, internal pressure, and back pressure are achievable using the GCTS Dynamic Hollow Cylinder Testing System for performing "true triaxial" tests.

Large Scale Polyaxial Rock Testing (RPS-600)

The GCTS RPS-600 Polyaxial Rock Testing system can be used to study the intermediate principal stress effect on rock engineering behavior and describe adequately the strength of rock under a general system of Polyaxial compressive stresses.

Large-Scale Deformation Device (DEF-S1600)

The DEF-S1600 deformation device is composed of two, three, or four DEF-S1610 Axial Deformation Gages and one or two DEF SRCP 600 circumferential deformation gages.

Large-Scale Soil Triaxial Cell (TRX-600)

The TRX-600 Triaxial Cell is ideal for testing soils with coarse particles in static or dynamic mode. It is also well suited for testing ballast material composed of crushed gravels and other sharp particles.

Load Frame (FRM-100)

The GCTS load frame is relatively lightweight but highly stable and has a small tabletop footprint. The load frame consists of two large, stainless steel threaded columns with a hard-anodized aluminum cross head beam and a large, thick bottom plate for stability.

Load Frame (FRM-10P)

The GCTS load frame is relatively lightweight but highly stable and has a small tabletop footprint. The load frame consists of two large, stainless steel threaded columns with a hard-anodized aluminum cross head beam and a large, thick bottom plate for stability.

Poly-Axial (True Triaxial) Rock Testing Fixture (RPX-150)

The GCTS RPX-150 Polyaxial fixture can be used to study the intermediate principal stress effect on rock engineering behavior and describe adequately the strength of rock under a general system of Polyaxial compressive stresses.

Poly-Axial Test System

The Poly-Axial System includes four hydraulic loads rams equipped with LVDT's so that each platen can be independently computer controlled.

Poly-Axial Test System (SPAX-2000)

The Poly-Axial System includes four hydraulic load rams equipped with LVDT’s so that each platen can be independently computer-controlled. The feedback control can be either stress or strain.

Pore Fluid Transfer Cell (HPVS-400)

GCTS HPVS-400 Pore Fluid Transfer Cell when used with HPVC pressure intensifiers are ideal for the control of the pore pressure in triaxial tests, head pressure in permeability tests, or fluid pressure in hydro-fracture tests when corrosive fluids, such as brine, are used as the pore fluid.

Pressure Control Panel (PCP-200)

GCTS pressure control panel provides a complete pressure control for triaxial systems. The volume change device is dual purpose: for triaxial and permeability testing, and 150 cc capacity with 0.01 cc resolution.

Pressure Controlled Coring Machine (RCD-250)

The GCTS Laboratory Coring Machine is capable of achieving a large range of spindle speeds to provide optimum performance when preparing test specimens, regardless of the properties of the material being sampled

Pressure Intensifier System (HPVC-070)

GCTS Pressure Intensifiers are ideal for the servo control of the cell pressure in triaxial tests, head pressure in permeability tests, or fluid pressure in hydro-fracture tests. This intensifier can also be used to measure flow in permeability tests and volume change in triaxial tests while applying prescribed pressures.

Pressure Intensifier System (HPVC-140)

GCTS Pressure Intensifiers are ideal for the control of the cell pressure in triaxial tests, head pressure in permeability tests, or fluid pressure in hydro-fracture tests. This intensifier can also be used to measure flow in permeability tests and volume change in triaxial tests while applying prescribed pressures.

Quick Triaxial Cell (HTRX-010)

The GCTS Quick Triaxial Cell was designed for fast and easy testing of rock cores with diameters from 25 mm to 54 mm (NX).

Rapid Triaxial Rock Testing System (RTR-1000)

The GCTS Rapid Triaxial Systems are typically operated with our new digital servo control and data acquisition package that includes Windows (98/2000/NT/XP) testing software and digital signal conditioning system.

Rapid Triaxial Rock Testing System (RTR-1500)

The GCTS Rapid Triaxial Rock Test System is a closed-loop digitally servo controlled apparatus developed for accurately performing easy and quick triaxial and unconfined tests on rock specimens.

Residual Ring Shear Testing System for Soils (SRS-150)

The GCTS Residual Ring Shear (SRS-150) is a fully automatic electro-pneumatic and servo-controlled testing system used for determination of drained residual strength of continually sheared soils.

Resilient Modulus and Asphalt Testing System(MRT-300)

The GCTS Resilient Modulus and Asphalt Testing System boasts a modular design which allows the system to be configured to test asphalt and soil in a variety of modes. This system is based on the GCTS SCON Digital Signal Conditioning and Controller and can be supplied with pneumatic or hydraulic loader.

Resilient Modulus Software (TRX-MRT CATS)

The new GCTS MRT stage software, part of the Triaxial Test module of the CATS 32 bit Windows software, which coupled with our new SCON electronics, is the most advanced resilient modulus software available today.

Resilient Modulus Testing System (MRT)

The GCTS Resilient Modulus Testing System is based on the GCTS Cyclic Triaxial Device with closed-loop control of the axial load/displacement and confining pressure. The device complies with the requirements of AASHTO T 307-99, SHRP-P46, ASTM D3999-91, NCHRP 1-28 and ASTM D5311-92 specifications.

Resonant Column/ Torsional Shear Testing System(TSH-100 & TSH-200)

This GCTS System combines the features of both resonant column and torsional shear devices into one system so that the effects of soil parameters such as void ratio, confining pressure, strain amplitude, and number of load cycles on shear modulus and material damping can be evaluated.

Resonant Column/Torsional Shear Module (CATS-RC)

The GCTS CATS Resonant Column/Torsional Shear module is part of our 32-bit Windows software, CATS (Computer Aided Testing System), which is the most advanced geotechnical software available today.

Rock Abrasiveness Apparatus (RAA-100)

The GCTS Rock Abrasiveness Apparatus (RAA-100) is used for measurement of rock abrasiveness under the standards specified by the Cerchar test. The test consists of measuring the wear flat on the standard steel indenter with 200 kg/mm2 hardness loaded with 70 N force, after it has scratched 10 mm distance on the rock surface.

Rock Creep Testing System (RCT-2000)

GCTS RCT-2000 Rock Creep Testing Systems is designed for performing long term tests without requiring a continued power input. It operates with only 800 kPa (100 psi) air pressure with minimum flow.

Rock Deformation Device (DEF-5000)

The GCTS Rock Deformation Device measures axial and lateral strain directly on the specimen providing accurate results. The device consists of an upper and lower support ring machined with a low weight, high strength design.

Rock Direct Shear System (RDS-200XL)

The GCTS Rock Direct Shear System is a simple and inexpensive device for testing a wide range of rock specimen configurations. Cylindrical cores, cubes, prisms, and rock fragments can be used to determine the shear strength.

Rock Polyaxial System(RPS-100)

The GCTS RPS-100 Rock Polyaxial System can be used to study the intermediate principal stress effect on rock engineering behavior and describe adequately the strength of rock under a general system of Polyaxial compressive stresses. Syringe pressure intensifiers are used to apply σ1, σ2 and σ3 independently with measurement of volume/deformation change.

Rock Triaxial Software Module (CATS-TRX-ROCK)

The new GCTS TRX-ROCK Advanced software is part of the CATS 32 bit Windows software, which coupled with our new SCON electronics, is the most advanced Geotechnical software available today.

Rock Triaxial Testing System

GCTS Triaxial Rock Testing Systems are manufactured according to your design specifications.

Series Pressure Panel & Pressure Volume Controller (PCP-2000 & PVC-100)

The GCTS Pressure Panel & Pressure-Volume Controller has been designed for providing accurate system pressure control or volume control. The system uses hydraulic digital servo control for maintaining the necessary test conditions for your testing needs.

Servo Controlled Consolidation Apparatus (CRS-100)

The GCTS Consolidation Apparatus is capable of performing Controlled Gradient (CG), Constant Rate of Strain (CRS), Incremental (conventional) consolidation tests.

Servo Controlled Simple Shear Testing System(SSH-100)

The design of the GCTS Simple Shear System is based on our external cell wall triaxial system.

Servo Controlled Superpave Gyratory Compactor(GRC-20)

The GCTS Gyratory Compactor offers a high level of accuracy while maintaining ease of use. The GRC-20 is a fully automated servo-controlled compactor that provides a high productivity rate.

Servo Hydraulic Cyclic Triaxial Test System

Servo Hydraulic Cyclic Triaxial Testing Systems are intended for performing dynamic tests for liquefaction, resilient modulus, complex modulus and other dynamic triaxial tests.

Servo Pneumatic Cyclic Triaxial Testing System

The cyclic/ dynamic testing system is intended for performing conventional triaxial tests, namely a constant rate of strain axial compression test, as well as advanced procedures such as Ko test and stress/strain path.

Servo-Controlled Rock Direct Shear and Triaxial System (RDS-500)

The GCTS Direct Shear and Triaxial System for Testing Rocks is a versatile device for testing a wide range of rock specimen configurations. Cylindrical cores, cubes, prisms, and rock fragments can be used to determine the shear strength.

Servo-Controlled Rock Direct Shear System (RDS-200)

The GCTS Rock Direct Shear System is a simple and inexpensive device for testing a wide range of rock specimen configurations. Cylindrical cores, cubes, prisms, and rock fragments can be used to determine the shear strength.

Servo-Controlled Rock Direct Shear System (RDS-300)

The GCTS Direct Shear System for Testing Rocks is a versatile device for testing a wide range of rock specimen configurations. Cylindrical cores, cubes, prisms, and rock fragments can be used to determine the shear strength.

Servo-Hydraulic Asphalt Testing System(ATM-025)

The GCTS ATM-025 Equipment is a modular system that can be configured to test asphalt in a variety of modes. The system includes an environmental chamber which houses the optional accessories required to perform dynamic complex modulus, flow number, flow time, indirect tension, beam flexural fatigue, and resilient modulus tests.

Servo-Pneumatic Asphalt Testing System (ATM-010)

The GCTS ATM‐010 system is the money‐saving solution for advanced HMA testing. It sports an electro‐pneumatic modular design allowing the system to be customized to meet the needs of the user.

Soil Axial Deformation Device (DEF-6100-AXC)

The GCTS Soil Deformation Device measures axial strain directly on the specimen providing accurate results. The device consists of an upper and lower support rings machined with a low weight, high strength design.

Soil Circumferential Deformation Device (DEF-SRCP)

The GCTS Soil circumferential Deformation Device measures the average change in circumference directly on the specimen providing accurate results.

Soil Deformation Device (DEF-S1100)

The GCTS Soil Deformation Device measures axial strain directly on the specimen providing accurate results. The device consists of an upper and lower support ring machined with a low weight, high strength design.

Soil Triaxial Cell (TRX)

The triaxial cell is constructed of stainless steel. The standard unit features a see-through Plexiglas external cell wall. The advantages of the external cell wall are that after the specimen is completely ready for a test, the cell wall is lowered over the cell and fastened into place with minimum disturbance to the test sample.

Soil Triaxial Software Module (CATS-TRX-SOIL)

The new GCTS TRX Advanced software is part of the CATS 32 bit Windows software, which coupled with our new SCON electronics, is the most advanced Geotechnical software available today.

Soil-Water Characteristic Cell (SWC-150)

The Fredlund SWCC Device is a simple unsaturated soil testing apparatus with great flexibility for applying matric suctions while following various stress paths.

Specimen Grinder (RSG-200)

The GCTS Specimen Grinder provides the final step to preparing test specimens with parallel and flat ends according to ASTM and ISRM specifications.

Specimen Lab Saw(RLS-100)

The GCTS Specimen Lab Saw has a power feed feature, which automatically pushes the specimen into the saw blade for an even, smooth cut.

Stand-Alone Beam Flexural Fatigue Apparatus(BFF-5)

The GCTS Stand-Alone Beam Flexural Fatigue Apparatus is an advanced Hot Mix Asphalt (HMA) testing system used to determine the fatigue life of the pavement layer.

Triaxial Rock Testing System (RTX-1000)

GCTS Triaxial Rock Testing Systems are manufactured according to your design specifications (load capacity and system stiffness, sample size, confining and pore pressures, internal instrumentation, temperature testing, and ultrasonic velocity measurements). The top cross head height can be adjusted to accommodate a wide variety of test specimens and triaxial cells.

Triaxial Rock Testing System (RTX-1500)

GCTS Triaxial Rock Testing Systems are manufactured according to your design specifications (load capacity and system stiffness, sample size, confining and pore pressures, internal instrumentation, temperature testing, and ultrasonic velocity measurements). The top cross head height can be adjusted to accommodate a wide variety of test specimens and triaxial cells.

Triaxial Rock Testing System (RTX-3000)

GCTS Triaxial Rock Testing Systems are manufactured according to your design specifications (load capacity and system stiffness, sample size, confining and pore pressures, internal instrumentation, temperature testing, and ultrasonic velocity measurements). The top cross head height can be adjusted to accommodate a wide variety of test specimens and triaxial cells.

Ultrasonic P&S Velocity Test System (ULT-100)

The GCTS Ultrasonic Velocity Test System is a turnkey system and includes everything required to perform Ultrasonic Velocity measurements on laboratory specimens. The system can be programmed to obtain a single measurement or several measurements at prescribed times or any other test parameter available.

Ultrasonic Velocity Test System (ULT-200)

The ULT-200 Ultrasonic Velocity Test System is a turnkey system and includes everything required to perform Ultrasonic Velocity measurements on laboratory specimens. The new hardware and software utilize the latest technology to allow for precise determination of wave velocities.

Uniaxial Testing System (UCT-1000)

GCTS Uniaxial Testing Systems include our state-of-the-art SCON-1500 Digital Signal Conditioning & Servo Controller CATS software. The system is capable of performing static and dynamic closed-loop load, deformation, strain or any other measured or calculated parameter.

Universal Testing Machine (UTM)

The GCTS Universal Testing Machine is a very versatile system and includes our state-of-the-art Digital Servo Controller and Signal Conditioner. It allows the test setups to be made up of multiple independent phases, with each phase having its own unique output definition, data acquisition and data saving parameters.

Unsaturated Soil Testing System (USTX-2000)

The GCTS Unsaturated Soil Triaxial System is an electro-pneumatic system with closed-loop digital servo control. Electro-hydraulic option is available for performing tests at higher frequencies or amplitudes.

Unsaturated Soil Triaxial Testing System

The GCTS Unsaturated Soil Triaxial System is an electro-pneumatic system with closed-loop digital servo control. Electro-hydraulic option is available for performing tests at higher frequencies or amplitudes.

Unsaturated Soils Triaxial Double Cell (TRX-2C)

The main feature of this triaxial cell is the incorporation of a double cell wall. This prevents differential pressure changes for the inner wall while changing the confining pressure and thus eliminating volume changes errors associated with single cell units due to cell expansion.

Volume Change Device (VCD-400)

GCTS volume change device is equipped with a frictionless rolling diaphragm and an internal LVDT guided by ball bearing unit housed inside a stiff stainless steel housing. The rolling diaphragm and ball bearing guide are essentially frictionless enabling volume change measurements with no pressure differential.