Jiubin Instruments JB/YES-2000D Electro-Hydraulic Compression Testing Machine

Overview

The Jiubin Instruments JB/YES-2000D Electro-Hydraulic Compression Testing Machine is a statically rated, load-frame-based mechanical testing system engineered for high-force uniaxial compression evaluation of construction materials. It operates on a closed-loop electro-hydraulic servo principle: a precision-controlled three-phase motor drives a gear-type hydraulic pump, generating pressurized oil flow regulated via manually operated proportional valves. Load application is achieved through a single-acting piston-cylinder assembly with integrated pressure transduction, enabling stable force generation up to 2000 kN under displacement-limited conditions. Designed specifically for compliance with ASTM C39/C109/C1337, ISO 7500-1 Class 1, and GB/T 3159–2008 requirements, the system delivers traceable, repeatable compression data for quality control laboratories, precast concrete plants, and civil engineering material certification facilities.

Key Features

• Robust dual-platen configuration with interchangeable φ225 mm and φ300 mm hardened steel platens—optimized for standard brick, mortar, cement paste, and concrete cylinder specimens per ASTM C39 and EN 12390-3.
• Electro-hydraulic actuation architecture featuring a 40 MPa-rated gear pump, filtered suction circuit, and thermally stabilized oil reservoir—ensuring consistent pressure delivery and minimal hysteresis over extended test cycles.
• Digital load readout with 0.01 kN resolution and ≤ ±1% full-scale accuracy verified against national metrological standards; controller firmware supports zero-point calibration, peak hold, and auto-stop at preset load or displacement thresholds.
• Mechanically reinforced frame with 750 kg mass and low center-of-gravity geometry—designed to minimize dynamic deflection during high-force loading and maintain alignment tolerance within ±0.02 mm/m across the 320 mm maximum platen spacing.
• Integrated safety interlocks including overpressure relief valve (set at 42 MPa), emergency stop circuit, and mechanical limit switches—fully compliant with IEC 60204-1 and GB 5226.1 safety directives.

Sample Compatibility & Compliance

The JB/YES-2000D accommodates standard cylindrical (150 mm × 300 mm), cubic (150 mm × 150 mm × 150 mm), and prismatic specimens used in structural material qualification. Its φ300 mm upper platen meets ASTM C39 specimen support requirements for 150 mm-diameter concrete cylinders, while the φ225 mm configuration aligns with ISO 4012 for mortar cube testing. All force measurements are traceable to CNAS-accredited calibration certificates (valid for 12 months). The system satisfies mandatory documentation requirements for ISO/IEC 17025-accredited labs—including audit-ready calibration logs, maintenance records, and uncertainty budgets for force measurement (k = 2, U = ±0.8% FS). It supports GLP-aligned reporting when paired with optional external data acquisition software.

Software & Data Management

The built-in digital controller provides local real-time display of load (kN), loading rate (kN/s), and elapsed time. While the base unit does not include PC connectivity, its RS-232 interface enables integration with third-party SCADA or LIMS platforms using Modbus RTU protocol. Optional USB-to-RS232 adapters allow direct export of ASCII-formatted test reports (CSV/TXT) containing timestamped load-displacement sequences, peak load, and failure mode annotation. Data files comply with ASTM E1318-22 metadata conventions and support post-processing in MATLAB, Excel, or Minitab for Weibull modulus analysis, compressive strength distribution modeling, and batch conformity assessment per ISO 9001 Clause 8.5.2.

Applications

• Compressive strength verification of Portland cement, blended cements, and supplementary cementitious materials (SCMs) per ASTM C150 and EN 197-1.
• Quality assurance testing of autoclaved aerated concrete (AAC), lightweight aggregates, and cellular concrete blocks per ASTM C1693 and BS EN 772-1.
• Structural validation of precast concrete elements—including beams, columns, and cladding panels—prior to site installation.
• Research-grade evaluation of geopolymer binders, alkali-activated materials, and fiber-reinforced cement composites under controlled strain rates (0.1–1.0 MPa/s).
• Third-party certification testing for CE marking (EN 12390 series), CCC certification (GB 175–2023), and municipal infrastructure tender compliance.

FAQ

What is the recommended maintenance schedule for the hydraulic system?
Oil filtration and replacement every 1,500 operating hours or annually—whichever occurs first—using ISO VG 46 anti-wear hydraulic oil meeting DIN 51524 Part 2 specifications.
Can the machine perform flexural or tensile tests?
No. The JB/YES-2000D is configured exclusively for uniaxial compression. Flexural testing requires a separate universal testing machine with bending fixtures and load cell reversal capability.
Is the controller compatible with FDA 21 CFR Part 11 requirements?
The embedded controller lacks electronic signature, audit trail, and user access control features required for Part 11 compliance; however, when interfaced with validated external software (e.g., LabArchives ELN), full ALCOA+ data integrity can be achieved.
What environmental conditions are required for optimal operation?
Ambient temperature: 10–35 °C; relative humidity: ≤80% non-condensing; floor vibration isolation: ISO 2372 Grade A (≤2.8 mm/s RMS); power supply: 380 V ±10%, 50 Hz, TN-S earthing.
Does the system include calibration certification upon delivery?
Yes—a factory-issued calibration certificate (traceable to NIM, China) covering force measurement across 200–2000 kN range is supplied with each unit, valid for 12 months from date of shipment.