About Automatic Marshall Stability Test Machine
Specification:
Automatic Marshall Stability Test MachineorDigital Marshall Testing Machineis a fully automated PC controlled Marshall tester. The 50 kN capacity Automatic Marshall Stability Test Machine is used to determine the maximum load and flow values of bituminous mixtures. The machine comprises of a robust and compact two column frame with adjustable upper cross beam. The unit is a bench mounting compression frame with motor and worm gear housed within the base unit. The speed of the lower platen can be adjusted between 6 mm/min to 60 mm/min using the data acquisition and control unit. For safety, the up and down travel of the lower platen is limited the use of limit switches. Rapid adjustment of the platen is controlled using the up and down buttons on the front panel of the machine. The machine can be hand operated by a lateral hand wheel for calibration purposes.
The measuring system consists of a 50 kn capacity strain gauge load cell fitted to the upper cross beam to read stability values and the 25 x 0.001 mm linear potentiometric displacement transducer fitted to the breaking head. The Automatic Marshall Stability Machine is suitable for testing 6 dia. 4 dia. specimens conforming to ASTM D5581
The Automatic Marshall Stability Test Machine is supplied complete with:
- Load cell, 50 kn
- Llinear potentiometric displacement transducer with bracket, 25 x 0.001 mm
- PC software
- Connection cable
- Hand wheel for manual control
- Breaking head, 4
Automatic Marshall Testing Machine Features:
- Automatically calculates flow and stability values
- Can make test with displacement and limited load control
- Real time display of test graph.
- CPU card with 32-bit Arm RISC architecture
- Permanent storage capacity up to 10000 test results.
- 4 analog channels, 2 channels are active for marshall test
- Programmable digital gain adjustment for load-cell, pressure transducers, strain-gauge based sensors, potentiometric sensors, voltage and current transmitters
- 1/256000 points resolution per channel
- 10 data per second sample rate for each channel
- Ethernet connecting for computer interface
- 800x480 resolution 65535 color TFT-LCD industrial touchscreen
- 4 main function keys
- Multi-language support
- 3 different unit system selection; kn, ton and lb
- Real-time clock and date
- Test result visualization and memory management interface
- Remote connection through ethernet
- USB flash disc for importing test results and for firmware
- USB printer support for inkjet and laser printers (ask for compatible models)
- Camera support for real-time video recording during test (ask for compatible models)
- Free of charge PC software for the test control and advanced report generation
Precision and ReliabilityConstructed with a high-rigidity frame and precision-ground hardened steel platen, the test machine guarantees accurate and repeatable results. Its advanced microprocessor control ensures precise measurement with 0.1 kN accuracy, supporting reliable analysis for both routine and advanced research applications in pavement material testing.
Safety and Ease of UseOperator safety is prioritized with integrated features such as an emergency stop switch and overload protection. The machine includes a stroke limit switch and user-friendly software, providing straightforward operation and data acquisition. Its bench-top, compact design makes it suitable for laboratories with limited space.
Versatile Data ManagementCompatibility with PC analysis software and outputs via USB or RS232 port allow for streamlined data transfer and reporting. The digital LCD display offers real-time readings and peak value hold, enhancing data accuracy and simplifying result archiving for test personnel.
FAQ's of Automatic Marshall Stability Test Machine:
Q: How does the Automatic Marshall Stability Test Machine enhance bituminous mixture testing?
A: The machine automates the Marshall Stability test process with microprocessor-based controls, delivering accurate and reliable data acquisition. Its precision ground hardened steel platen and digital LCD with peak hold functionality contribute to consistent evaluation of pavement materials, making laboratory testing more efficient and repeatable.
Q: What safety features are incorporated in this Marshall Stability Test Machine?
A: The equipment includes an emergency stop switch, overload protection, and a stroke limit switch to safeguard operators and prevent equipment damage during testing. These comprehensive safety measures ensure secure operation in laboratory environments.
Q: When is data accessible from the machine, and how can it be retrieved?
A: Test data is available instantly after each measurement, thanks to the instantaneous response time (<1 second) and peak hold digital display. Data can be easily exported to a connected PC via USB or RS232 port and is compatible with analysis software for further processing and documentation.
Q: Where can this Automatic Marshall Stability Test Machine be installed?
A: With its compact bench-top design, the machine is ideal for laboratories and research facilities, accommodating environments where space might be limited. Its robust construction also supports durability in demanding industrial applications.
Q: What is the process for testing a specimen using this machine?
A: A standard Marshall specimen (101.6 mm diameter x 63.5 mm height) is placed in the machine's holder. The automatic controls and built-in software guide the test at a speed of 50 mm/min, measuring up to 50 kN force, with data displayed digitally and stored for analysis. Specimen extraction can be done manually or with an optional power-assisted attachment.
Q: Can the machine be used with different types of analysis software?
A: Yes, the machine supports PC analysis software via both USB and RS232 interfaces, ensuring broad compatibility for data processing and reporting. This flexibility assists laboratories in integrating the tester with their existing digital analysis systems.