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K20 – Force Tensiometer

The versatile semi-automatic tensiometer for quality control

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  • Equipment designed to measure: surface and interfacial tension, density of liquids.
  • The instrument’s precise force sensor and precisely shaped measuring probes ensure reliable results, while processor-controlled analyzes based on measurement patterns provide results independent of user.
  • The optional long-life battery without a computer allows the K20 to be used flexibly on-site.

Measurement methods and options:
– Surface tension and interface tension using rings, discs, and rods
– Surface tension and interface tension using ring tear-off method
– Density of liquid
– Temperature from -15 to 130°C, measuring temperature by internal or external sensor

INSTRUMENT DIMENSIONS

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

TEMPERATURE MEASUREMENT

Range of temperature measurement -20 to 150 °C
Resolution 0.1 °C
Precision 0.2 °C
Accuracy 0.5 °C
Internal sensor
External sensor optional: sample vessel

POWER SUPPLY

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

ENVIRONMENT

Operating temperature 15 to 30 °C
Humidity without condensation

TEMPERATURE CONTROL

Type of temperature control liquid
Range of temperature control -10 to 130 °C
Flow-through thermostat optional

INTERFACES

PC USB 2.0
RS232
Auxiliary
Thermostat
Inert gas

HOUSING AND PERIPHERALS

Built-in bubble level yes
Built-in and software-controlled ionizer
Glass windshield doors
Windshield doors yes
Stainless steel measuring compartment
Control pad
Control panel integrated
Touch panel
Display 320 × 240 px

SAMPLE STAGE

Travel distance 90 mm
Simple platform yes
Temperature control jacket optional: 70 mm or 100 mm
Inverse CMC
Integrated sample stage yes

DRIVE

Resolution
Travel speed 2.4 to 14 mm/min
Type of motor DC motor

OPTICAL HEIGHT SENSOR

Resolution

FORCE MEASUREMENT

Maximum load 50 g
Resolution 100 µg
Precision 100 µg
Measurement rate 5 Hz
Adjustment optional:
automated
external weight
Locking mechanism

SOFTWARE

Software type LabDesk (optional)
Available software modules data logger (optional)

SURFACE FREE ENERGY OF SOLIDS

Results
Models

WASHBURN

Results
Resolution
Range
Type

WILHELMY CONTACT ANGLE

Minimum fiber diameter
Results
Range
Resolution
Type

WILHELMY PLATE

Results surface tension (SFT)
interfacial tension (IFT)
Range 1 to 999 mN/m
Resolution 0.1 mN/m

DU NOÜY RING

Results surface tension (SFT)
interfacial tension (IFT)
Range 1 to 999 mN/m
Resolution 0.01 mN/m
Correction method Harkins-Jordan
Zuidema-Waters
linear correction
no correction

LIQUID DENSITY

Liquid density range 1 to 2200 kg/m³
Resolution 1 kg/m³
Precision 3 kg/m³

SOLID DENSITY

Solid density range
Resolution
Precision

PENETRATION

Results

ROD

Results surface tension (SFT)
interfacial tension (IFT)
Range 1 to 999 mN/m
Resolution 0.2 mN/m

SEDIMENTATION

Results

Main machine with LCD screen

– Model table

– Motor

– 1 sample container with a diameter of 70 mm

– Connection cable

Accessories and supplies

– SV20 Sample container, fireproof, diameter 70 mm, quantity of 6 pieces

– RI21 Ptlr-Ring

– PL21 Pt-Plate

– TO01 Tool for ring dressing

– The temperature controller includes:

  • TJ1020 Temperature controller with liquid bath and integrated magnetic stirrer, compatible with 70 mm diameter sample containers
  • TP1010 Thermal sensor for measuring sample temperature for use with TJ1020