WANCHEN WDTP-5000N Microcomputer-Controlled Pneumatic Spring Tensile Tester
| Brand | WANCHEN |
|---|---|
| Model | WDTP-5000N |
| Max Test Force | 5000 N |
| Force Accuracy | ±0.5% of reading |
| Force Resolution | 1/500,000 FS |
| Displacement Resolution | < 0.001 mm |
| Speed Range | 0.005–500 mm/min |
| Control Modes | Constant Load, Constant Displacement, Constant Strain |
| Compliance | ASTM E4, ISO 7500-1, GB/T 228.1 |
| Power Supply | 220 V ±10%, 50 Hz, 750 W |
| Operating Environment | 10–35 °C, RH ≤80% |
Overview
The WANCHEN WDTP-5000N Microcomputer-Controlled Pneumatic Spring Tensile Tester is a precision-engineered dual-space electromechanical testing system designed specifically for the static and quasi-static mechanical characterization of pneumatic springs, gas struts, and related linear actuators. Based on closed-loop servo-controlled force and displacement measurement principles, the system implements high-fidelity load-cell feedback and high-resolution encoder-based position tracking to ensure traceable, repeatable, and metrologically sound test results. Its single-column, dual-zone architecture supports both tensile (upper crosshead) and compressive (lower platen) configurations—enabling full-cycle evaluation of extension force, compression force, hysteresis, damping behavior, and fatigue-related degradation in gas-charged springs. The instrument conforms to fundamental mechanical testing standards including ASTM E4 (Load Cells), ISO 7500-1 (Static Testing Machines), and GB/T 228.1 (Metallic Materials — Tensile Testing), supporting compliance-critical workflows in R&D, quality assurance, and third-party certification laboratories.
Key Features
- High-precision dual-space frame with rigid single-arm construction and optimized load path geometry for minimal deflection under full 5000 N load.
- Full-digital AC servo motor drive system with integrated speed controller, delivering ultra-wide test speed range from 0.005 mm/min to 500 mm/min with ±0.1% speed stability.
- Advanced force measurement subsystem featuring a 5000 N capacity load cell calibrated to ±0.5% of reading, with true 24-bit analog-to-digital resolution and 1/500,000 full-scale force resolution.
- High-accuracy displacement sensing via precision ground ball screw coupled with optical encoder, achieving sub-micron positional resolution (<0.001 mm) and real-time feedback for closed-loop control.
- Multi-mode closed-loop control architecture supporting constant-force, constant-displacement, and constant-strain testing—with seamless, bumpless transitions between modes during dynamic protocols.
- Dual-layer safety protection: hardware-based mechanical limit switches combined with software-configurable overload thresholds, overcurrent, overvoltage, and overtravel safeguards.
- Modular pneumatic spring-specific fixtures—including adjustable end-mount adapters, spherical joint interfaces, and clamping plates—designed to minimize parasitic bending moments and ensure axial loading alignment per ISO 12106.
Sample Compatibility & Compliance
The WDTP-5000N accommodates pneumatic springs ranging from miniature automotive cabin struts (diameter ≥8 mm, stroke ≥25 mm) to industrial-grade support cylinders (diameter ≤60 mm, stroke ≤300 mm). It also supports standardized tensile specimens of metals, polymers, elastomers, and fiber-reinforced composites when equipped with universal wedge or pneumatic grips. All mechanical and electronic subsystems are validated against ISO 7500-1 Class 1 accuracy requirements for static force measurement. Force calibration certificates are traceable to national metrology institutes (e.g., NIM, NIST-equivalent references). The system supports audit-ready operation under GLP and GMP environments, with optional 21 CFR Part 11-compliant electronic signature and audit trail modules available upon request.
Software & Data Management
The proprietary MTS-TestControl software (developed by Jinan Meitesi, pre-installed and licensed) provides a fully integrated platform for test definition, real-time monitoring, data acquisition, post-processing, and reporting. It enables simultaneous acquisition of force, displacement, time, and optional strain (via extensometer input) at user-selectable sampling rates up to 1 kHz. Raw data is stored in structured Access database format (.mdb), ensuring interoperability with SQL-based enterprise LIMS and statistical analysis tools (e.g., JMP, Minitab). The software supports hierarchical user permission management with role-based access control (RBAC), encrypted password protection, and full audit trail logging of all test parameter changes and result exports. Curve overlay, point-wise interrogation, differential analysis, and multi-curve statistical comparison functions are embedded natively. Custom report templates in Microsoft Word or PDF formats can be dynamically populated using XML-based mapping rules—eliminating manual data re-entry across production shifts or supplier qualification cycles.
Applications
- Verification of force-stroke curves for automotive hatchback, trunk lid, and seat adjustment pneumatic springs.
- Quantification of hysteresis loss and internal friction in gas springs used in medical imaging equipment and ergonomic office furniture.
- Compliance testing of pneumatic dampers per ISO 15552 and DIN 24334 specifications.
- Material-level tensile property evaluation of spring housing alloys, piston seals, and nitrogen-permeation barrier coatings.
- Accelerated life cycle simulation via programmable step-load or cyclic displacement profiles.
- Root cause analysis of premature failure in field-return units through comparative curve morphology assessment.
- Evaluation of temperature-dependent performance drift using optional environmental chamber integration (−20 °C to +80 °C).
FAQ
What types of pneumatic springs can be tested on the WDTP-5000N?
The system is optimized for standard rod-type and cylinder-type gas springs with nominal diameters between 8 mm and 60 mm, and strokes up to 300 mm. Custom fixture kits are available for non-standard mounting geometries.
Is the force calibration traceable to international standards?
Yes—each load cell is factory-calibrated with NIM-traceable reference standards, and calibration certificates include uncertainty budgets compliant with ISO/IEC 17025 requirements.
Can the system export data directly to Excel or MATLAB?
Raw test data is saved in .mdb format; CSV and ASCII exports are supported. MATLAB users may import native .mdb files via Database Toolbox or use provided Python-compatible API wrappers.
Does the software support automated pass/fail decision logic based on tolerance bands?
Yes—user-defined acceptance criteria (e.g., “Force at 50 mm stroke must be 1200 ±30 N”) can be configured per test method, triggering visual alerts and auto-flagging out-of-spec results.
Is remote operation and monitoring possible?
The system supports TCP/IP-based network connectivity. With appropriate firewall configuration, authorized users may initiate tests, monitor live curves, and retrieve reports via secure web interface or VNC client.
