Force Tensiometer – K20 – Krüss

Force Tensiometer – K20 – Krüss

Comprehensive Quality Control with the Force Tensiometer K20

The Force Tensiometer K20 by Krüss is an advanced, semi-automatic tool designed for precise quality control measures in industries where surface tension and interfacial tension play critical roles. Equipped with a precision force sensor and well-crafted measuring probes, this instrument ensures accurate and reliable results. Its processor-controlled analyses, built on adaptable measurement templates, guarantee user-independent outcomes. The K20’s compatibility with long-life battery operation enhances its flexibility, allowing for on-site use without the need for continuous computer connectivity.

Applications Across Industries

Key applications include the assessment of transformer and other oils’ aging state following ASTM D 971 and IEC 62961 standards, detecting cleaning agent residues in food processing, and verifying the effectiveness of cleaning, wetting, and other surface-active agents. It also plays a significant role in the quality assurance processes of emulsifiers.

Versatile Measuring Techniques

The K20 encompasses various measuring methods, including surface and interfacial tension evaluations using both the lamella tear-off and wetting force methods on different probes, alongside liquid density measurements. These diverse approaches ensure comprehensive analysis capabilities for a broad range of materials and conditions.

Technical Specifications

Software
  • Software type: LabDesk
  • Software languages: English, German
  • Software modules: Data logger (optional)

Rod
  • Results: surface tensioninterfacial tension
  • Range: 1 to 999 mN/m
  • Resolution: 0.2 mN/m

Du Noüy ring
  • Results: surface tensioninterfacial tension
  • Range: 1 to 999 mN/m
  • Resolution: 0.01 mN/m
  • Correction method: Harkins-JordanZuidema-Waterslinear correctionno correction

Liquid density
  • Liquid density range: 1 to 2200 kg/m³
  • Resolution: 1 kg/m³

Wilhelmy plate
  • Results: surface tensioninterfacial tension
  • Range: 1 to 999 mN/m
  • Resolution: 0.1 mN/m

Instrument dimensions
  • Footprint: 270 mm × 350 mm (W × D)
  • Height: 430 mm
  • Weight (without accessories): 11 kg

Environment
  • Operating temperature: 15 to 30 °C
  • Humidity: without condensation

Interfaces
  • PC: USB 2.0RS232

Housing and peripherals
  • Built-in bubble level: yes
  • Windshield doors: yes
  • Control panel: integrated
  • Display: 320 × 240 px

Power supply
  • Voltage: 100 to 240 V
  • Power consumption: 40 W
  • Frequency: 47 to 63 Hz

Temperature measurement
  • Range: -20 to 150 °C
  • Resolution: 0.1 °C
  • Precision: ±0.2 °C
  • Accuracy: ±0.5 °C
  • External sensor: optional: sample vessel

Temperature control
  • Type of temperature control: liquid (-10 to 130 °C)
  • Flow-through thermostat: optional

Drive
  • Travel speed: 2.4 to 14 mm/min
  • Type of motor: DC motor

Sample stage
  • Travel distance: 90 mm
  • Simple platform: yes
  • Temperature control jacket: optional: 70 mm
  • Integrated sample stage: yes

Force measurement
  • Maximum load: 50 g
  • Resolution: 100 μg
  • Accuracy: -0.1 mN/m | +0.2 mN/m(plate method calibration)
  • Precision: ±100 μg
  • Measurement rate: 5 Hz
  • Adjustment: optional:automatedexternal weight
  • Adjustment weight: 20 g

FAQ - Force Tensiometer – K20 – Krüss

What are the key applications of the Force Tensiometer K20?

The Force Tensiometer K20 serves a wide range of industries, including the assessment of transformer and other oils' aging, detection of cleaning agent residues in food processing, verification of the effectiveness of cleaning, wetting, and other surface-active agents, and quality assurance of emulsifiers.

What measuring techniques does the K20 offer?

The K20 encompasses various measuring methods such as surface and interfacial tension evaluations using the lamella tear-off and wetting force methods, alongside liquid density measurements, making it a versatile tool for comprehensive material and condition analysis.

Can the Force Tensiometer K20 be used without connecting to a computer?

Yes, the K20 is compatible with long-life battery operation, enhancing its flexibility for on-site use without the necessity for continuous computer connectivity.

What are the software features of the K20?

The Force Tensiometer K20 comes with LabDesk software, available in English and German, and offers optional Data logger software modules for advanced data management and analysis.

What is the range and resolution of surface tension and interfacial tension measurements with the K20?

The K20 offers a wide range of measurements from 1 to 999 mN/m with resolutions varying by the method used: 0.2 mN/m for the rod, 0.01 mN/m for the Du Noüy ring, and 0.1 mN/m for the Wilhelmy plate.

What are the physical dimensions and weight of the K20?

The instrument has a footprint of 270 mm by 350 mm, stands 430 mm high, and weighs 11 kg without accessories, making it relatively portable for various testing environments.

Is there any provision for temperature control and measurement in the K20?

Yes, the K20 features a temperature measurement range of -20 to 150 °C with precision and accuracy. It also offers temperature control options for liquid from -10 to 130 °C, with an optional flow-through thermostat for precise control conditions.

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