TPS‑SFZL‑U Series Surface Tension Tester

Characteristics
● Equipped with advanced imported electromagnetic‑force balance sensor, delivering high precision and excellent repeatability.
● Fast data acquisition rate up to 100 data updates per second for accurate dynamic tension curve rendering.
● Multiple embedded professional tension correction models guarantee high‑accuracy measurement results.
● 5‑inch color touch‑screen control. Integrated display of ambient temperature, real‑time tension, peak tension, equivalent tension and other parameters for simple operation.
● Dual test modes: platinum plate method and platinum ring method. Users can select either one or activate both simultaneously.
● Fully‑automatic operation eliminates human‑caused errors. Automatically locks liquid interface, displays tension curve, captures peak tension, and directly outputs tension values on screen. Auto‑stop measurement without manual intervention to minimize manual errors.
● Full‑range automatic correction, supporting weight calibration, pure‑water tension calibration and ethanol tension calibration.
● Stepper‑motor‑driven automatic lifting platform with micron‑level precision. Smooth and noiseless movement; lifting speed adjustable from 1‑300 mm/min via touch screen.
● Unique semi‑circular arc switch‑door design to isolate interference from external air flow.
● Convenient lifting bracket for platinum plate & platinum ring for easy assembly and disassembly. Force value can be calibrated anytime with standard weights.
● One‑key peeling function; stable readings without number jumping or zero drift.
● Automatic temperature compensation. Automatically converts tension values to 20 °C reference based on water and ethanol calibration.
● Reserved temperature‑control interface. Compatible with constant‑temperature water bath for precise sample temperature control.
● Powerful data acquisition & management software. No manual logging required. Historical data can be queried and exported to Excel for secondary data processing.
● Compliant with standards including but not limited to:
GB/T6541‑86, ISO1409‑1995, GB/T22237‑2008, SH/T1156‑95,
ISO6295‑1983, JB/T18396‑2001, GB/T5549 (ISO 304‑1985)
● Instrument patent certificate available.

Technical Parameters
| Item | SFZL‑U1 | SFZL‑U2 | SFZL‑U3 |
| —- | —- | —- | —- |
| Test Method | Platinum plate & platinum ring method, single or dual‑mode selection | Platinum plate & platinum ring method, single or dual‑mode selection | Platinum plate & platinum ring method, single or dual‑mode selection |
| Control Mode | Touch operation, automatic sample table lifting & lowering, automatic conversion | Touch operation, automatic sample table lifting & lowering, automatic conversion | Touch operation, automatic sample table lifting & lowering, automatic conversion |
| Lifting Speed | 1‑300 mm/min | 1‑300 mm/min | 1‑300 mm/min |
| Display Mode | 5‑inch color touch screen display | 5‑inch color touch screen display | 5‑inch color touch screen display |
| Measuring Time | Platinum plate method ≤10 s; Platinum ring method ≤50 s | Platinum plate method ≤10 s; Platinum ring method ≤50 s | Platinum plate method ≤10 s; Platinum ring method ≤50 s |
| Required Sample Volume | Platinum plate method ≥3 mL; Platinum ring method ≥5 mL | Platinum plate method ≥3 mL; Platinum ring method ≥5 mL | Platinum plate method ≥3 mL; Platinum ring method ≥5 mL |
| Test Range | 0‑1000 mN/m | 0‑1000 mN/m | 0‑1000 mN/m |
| Resolution | 0.1 mN/m | 0.01 mN/m | 0.001 mN/m |
| Accuracy | 0.1 mN/m | 0.01 mN/m | 0.001 mN/m |
| Repeatability | 0.1 mN/m | 0.01 mN/m | 0.001 mN/m |
| Electronic Balance Precision | Imported 1/1000 g | Imported 1/10000 g | Imported 1/100000 g |
| Weighing System Type | Electromagnetic force balance | Electromagnetic force balance | Electromagnetic force balance |
| Automatic Calibration | Weight correction, distilled‑water & ethanol coefficient correction, temperature correction | Weight correction, distilled‑water & ethanol coefficient correction, temperature correction | Weight correction, distilled‑water & ethanol coefficient correction, temperature correction |
| Data Acquisition Software | Real‑time tension curve recording & dynamic tension analysis | Real‑time tension curve recording & dynamic tension analysis | Real‑time tension curve recording & dynamic tension analysis |
| Micro‑printer Interface | Optional | Optional | Optional |
| Temp‑control Interface | For constant‑temperature water bath temperature control | For constant‑temperature water bath temperature control | For constant‑temperature water bath temperature control |
| Data Update Rate | 100 data / second | 100 data / second | 100 data / second |
| Data Output Interface | Net port | Net port | Net port |
| Dimension & Weight | 28 cm × 35 cm × 56 cm | 28 cm × 35 cm × 56 cm | 28 cm × 35 cm × 56 cm |
| Power | 100 W | 100 W | 100 W |