Control tester C631H

temperaturecalibrationlaboratory

The C631H Thermal Shrinkage Tester is designed in accordance with ISO 14616 and GB/T 34848 to determine shrinking force, contracting force and shrinkage ratio of heat‑shrinkable films; shrinking force greater than 0.01 N can be detected.

Product features

• Laser displacement measurement for precise evaluation of film shrinkage ratio
• High‑precision load cell (standard 5 N; optional 10 N, 30 N) for accurate force measurement and repeatability
• Selectable test ranges to cover diverse sample types
• Reliable brand control system for accurate displacement and speed control
• Three selectable specimen loading speeds (loading time down to 2 seconds)
• Real‑time display of shrinking force, contracting force and shrinkage ratio

Embedded computer‑controlled system

• Integrated instrument and software — no external PC required
• Standard monitor, mouse and keyboard with Windows‑style interface for simplified operation
• Historical data review and printing; USB and network ports for data export
• Intelligent sensor calibration reminders to ensure data validity
• Labthink data security design isolates test data from the host PC to reduce risk of loss
• Optional DataShield™ system for centralized data management and information‑system integration

Test principle
The specimen is mounted in the test area for displacement and force measurement, heated to the specified temperature for shrinkage testing and then cooled; the system records shrinking force, temperature and shrinkage ratio in real time and provides analytical results.

Test standards

• GB/T 34848
• ISO 14616 (1997)
• DIN 53369 (1976)

Applications

• Shrinking force & contracting force
  Measure shrinking and contracting forces of heat‑shrinkable films under defined conditions
• Shrinkage ratio
  Measure percentage shrinkage of heat‑shrinkable films under defined conditions

Configurations

• Standard: instrument, monitor, mouse, keyboard, high‑temperature welding cloth, T‑plate (10 pcs)
• Optional: additional high‑temperature welding cloth, spare T‑plate, DataShield™

Technical specifications

• Load cell capacity: 5 N (standard); 10 N, 30 N (optional)
• Force accuracy: indicated value ±0.5% (10%–100% of load cell capacity); ±0.05%FS (0%–10% of load cell capacity)
• Force resolution: 0.001 N
• Displacement range: 0.1–95 mm
• Displacement accuracy: ±0.1 mm
• Shrinkage ratio range: 0.1%–95%
• Temperature range: room temperature to 210°C
• Temperature variation: ±0.2°C
• Temperature accuracy: ±0.5°C (single point calibration)
• Number of stations: 1 group (2 pcs)
• Specimen size: 110 mm × 15 mm (standard)
• Instrument dimensions: 480 mm (L) × 400 mm (W) × 630 mm (H)
• Power supply: 220 VAC ±10% 50 Hz / 120 VAC ±10% 60 Hz
• Net weight: 26 kg