The Automatic Load-Displacement Curve Tester is a professional test equipment designed to evaluate the mechanical performance of keys and switches. Manufactured by Mikrosize, a trusted provider of reliable testing solutions, this instrument achieves high-precision load-stroke measurement by means of advanced servo-motor drive technology. It offers a maximum test stroke of 100 mm and a minimum displayed load of 0.1 gf, satisfying strict requirements for high-accuracy mechanical-performance testing of various keys and switch products.
Featuring a user-friendly Windows-based Chinese graphical interface, the instrument allows operators to configure test conditions intuitively. Critical test data including test parameters, load-displacement curves and detailed inspection reports can be easily saved. Data may also be exported to Excel format for straightforward analysis and documentation. These capabilities make the tester a versatile solution for quality-control and R&D departments across industries that rely on key and switch performance validation.
Core Testing Capabilities
Developed with Mikrosize’s engineering expertise, this test equipment supports multiple test scenarios:
- It performs 2D force-displacement curve tests for silicone keys (e.g. keyboard keys), metal keys and tactile-switch keys. Accurate force-displacement data is captured to assess product mechanical characteristics.
- For conductive-button testing, the instrument precisely measures contact dynamic resistance during OFF-to-ON and ON-to-OFF switching transitions, verifying that the electrical performance of conductive buttons complies with industry specifications.
- It supports comprehensive parameter inspection for PS2 and USB keyboards, checking the conduction status and contact-resistance parameters of every key to validate overall keyboard functionality.
High-Performance Configuration
Premium-grade hardware guarantees measurement reliability and accuracy:
- A Panasonic servo motor (Japan-sourced) and high-sensitivity load sensor deliver stable, precise actuation. Test speed is adjustable within the range of 0-100 mm/min, and stroke display resolution reaches 0.01 mm, enabling detection of subtle mechanical variations.
- Load-force units can be freely switched among N, lb, gf and kgf to accommodate diverse measurement standards and user preferences.
Key Product Features
This Mikrosize test instrument incorporates multiple practical, operator-oriented functions:
- Key metrics including peak force, return force, travel distance and click-force ratio are displayed directly on test charts. Manual calculation is eliminated, reducing human-induced error.
- Test curves are stored locally on the host computer. Users can zoom in on curves to examine local details. Multiple curves can be arranged arbitrarily on a single A4-sized page for side-by-side result comparison.
- Operators may input upper- and lower-limit specification thresholds for each test item. The system automatically judges measured results as OK or NG, simplifying inspection workflows for quality-control applications.
- The maximum measuring stroke can be configured. Load-stroke curves and inspection reports are digitally saved. Traditional graph paper is no longer required; reports can be printed on standard A4 paper.
- All test data is safely saved to the hard disk with no upper limit on data volume, supporting long-term storage and full-data traceability.
- Test parameters (test stroke, travel speed, test-cycle count, dwell-pause time, etc.) are set via computer software, ensuring consistent and repeatable test procedures.
- Inspection-report headers can be edited anytime in both Chinese and English to satisfy regional and corporate documentation requirements.
- Inspection reports are auto-generated without extra manual input, saving labor and improving operational efficiency.
- Reports can be exported to mainstream formats such as Excel, simplifying team data sharing and integration into corporate quality-management systems.
Standard Configuration
The Automatic Load-Displacement Curve Tester is delivered with a complete standard package ready for immediate testing:
- 1 × S205 standard test frame for stable, standardized test setup
- 1 × complete control system: industrial PC, control software interface, 17-inch LCD monitor, color inkjet printer, plus USB keyboard and mouse
- Load sensors (optional capacities: 2 kgf, 5 kgf, 10 kgf, 20 kgf), selectable according to the force range of target-test products
- Button-product test probes: one each of Φ2 mm, Φ4 mm, Φ6 mm, Φ8 mm, Φ10 mm flat-face probes, plus one ball-head probe, covering most common button dimensions and geometries.
Optional Add-on Module
For users needing electrical-performance testing in addition to mechanical-characteristic measurement, Mikrosize provides an optional conductivity-and-resistance-test module. This module integrates seamlessly with the main tester to expand measurement scope and deliver complete evaluation solutions for keys and switches.
To conclude, the Mikrosize Automatic Load-Displacement Curve Tester combines high-precision measurement, broad testing coverage and easy-to-operate workflows. It serves as an indispensable piece of test equipment for quality assurance and performance verification of keys and switches across multiple industries.
