Tuofeng YES-2000B Digital Display Compression Testing Machine (Electric Screw-Driven)

Overview

The Tuofeng YES-2000B Digital Display Compression Testing Machine is an electric screw-driven universal compression tester engineered for precision mechanical property evaluation of rigid and semi-rigid materials under uniaxial compressive loading. Unlike traditional hydraulic systems reliant on oil pressure regulation, this model integrates a high-torque servo motor coupled with a precision ground ball screw transmission system—delivering consistent, controllable, and repeatable load application without hydraulic fluid dependency. The machine operates on the principle of force-controlled or displacement-controlled quasi-static compression, conforming to standardized test methodologies defined in ASTM C109/C39, ISO 7500-1 (Class 1 accuracy), and GB/T 2611–2007 for testing machines. Its compact monolithic architecture eliminates external hydraulic power units, reducing maintenance overhead and enhancing long-term stability in laboratory and QC environments.

Key Features

• Electric screw-driven actuation system ensures smooth, noiseless, and stepless load application with inherent overload safety—no risk of hydraulic leakage or thermal drift.
• Digital load cell with integrated signal conditioning provides real-time force feedback; display resolution ≤ 0.1 kN, with indication error ≤ ±1% of full scale per ISO 7500-1 Class 1 requirements.
• Dynamic load rate monitoring: adjustable and continuously displayed during test execution (default nominal rate: 80 N/s, range configurable via firmware).
• Peak hold function captures maximum compressive load automatically; critical for brittle material failure analysis (e.g., concrete cubes, ceramic tiles, mortar specimens).
• Integrated thermal-printed report generation: outputs test ID, date/time stamp, peak load (kN), calculated compressive strength (MPa), and operator ID—fully traceable for internal QA documentation.
• Overload protection triggers immediate motor shutdown when applied force exceeds 103% of rated capacity (300 kN), safeguarding structural integrity and sensor calibration.
• Robust cast-iron frame with reinforced crosshead guidance ensures axial alignment tolerance < 0.15 mm/m over full stroke—minimizing eccentric loading artifacts.

Sample Compatibility & Compliance

The YES-2000B accommodates standard cylindrical (Φ100 mm, Φ150 mm) and cubic (100 × 100 × 100 mm, 150 × 150 × 150 mm) specimens used in cement, concrete, brick, and geopolymer testing. Its Φ300 mm hardened steel platens support uniform stress distribution across ASTM C39-compliant concrete cylinders up to 300 mm height. Vertical clearance of 260 mm allows direct placement of pre-cured specimens without repositioning. The system meets essential metrological and safety provisions of GB/T 3159–2008 (Chinese national standard for electronic universal testing machines) and aligns with functional expectations of ISO 16840-1 for compression-only testers. While not certified for FDA 21 CFR Part 11 out-of-the-box, audit-ready data logs (timestamped, non-editable binary exports) can be enabled for GLP/GMP-aligned laboratories upon software configuration.

Software & Data Management

The embedded microcontroller-based control unit supports USB data export in CSV format, enabling post-test analysis in Excel, MATLAB, or LIMS platforms. All test records—including raw force-displacement timestamps, user-defined metadata (batch ID, sample ID), and pass/fail flags—are stored locally with write-once archival logic. Optional PC-based software (Tuofeng TestSuite v3.2) adds graphical curve overlay, statistical trend reporting (mean, SD, CV%), and automated compliance checking against ASTM C39 acceptance criteria (e.g., minimum 95% confidence interval for strength class verification). Audit trails record operator login, parameter changes, and calibration events—supporting ISO/IEC 17025 documentation requirements.

Applications

• Compressive strength determination of Portland cement mortars and concretes (ASTM C109, C39, EN 12390-3).
• Quality control of fired clay bricks, autoclaved aerated concrete (AAC) blocks, and refractory ceramics.
• Mechanical screening of polymer composites, fiber-reinforced panels, and lightweight insulating materials.
• Educational labs requiring repeatable, low-maintenance compression demonstrations for materials science curricula.
• Pre-certification testing of construction additives (e.g., accelerators, retarders) per ASTM C494 protocols.

FAQ

What is the difference between the YES-2000B and traditional hydraulic compression testers?
The YES-2000B replaces hydraulic oil circuits with a servo-controlled ball screw mechanism—eliminating fluid maintenance, temperature sensitivity, and valve hysteresis while improving load rate linearity and long-term repeatability.
Does the system support third-party calibration certificates?
Yes. The load cell is factory-calibrated per ISO 376:2011; accredited calibration services (e.g., CNAS-certified labs) can issue traceable certificates valid for 12 months.
Can test parameters be password-protected to prevent unauthorized changes?
Yes. Operator-level and administrator-level access modes are configurable via keypad interface; parameter modification requires admin credentials.
Is the printed report compliant with ISO/IEC 17025 documentation requirements?
The printed output includes mandatory fields (date, time, test ID, result, unit), but full compliance requires integration with a validated LIMS or use of Tuofeng TestSuite’s electronic signature module.
What maintenance intervals are recommended for sustained accuracy?
Platen surface inspection every 200 tests; ball screw lubrication every 6 months or 1,000 operating hours; annual verification of force transducer linearity and zero drift.