Tensiometer PAT2S - SINTERFACE

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The PAT2S is the latest version of PAT instruments and continues the great tradition of PAT1M. The most striking improvements in the newly designed stand-alone tensiometer PAT2S are the higher resolution of the video camera and  the more flexible mechanical construction which allows to better adapt the instrument to the requirements of the user. In addition to the higher resolution also high speed cameras with high frame rates is embedded in the corresponding software.

  • High end stand-alone full automatic profile analysis instrument
  • Modern method to measure surface and interfacial tension of liquids
  • Interfacial Rheology Studies are available in the basic version
  • Modular extensions for different applications
  • Remote control via LAN, WLAN
  • Smartphone application for remoute monitoring
  • Modern user friendly interface and connectivity simplifies operation of instrument.

Principle is based  on the analysis  of  the shape of pendent and sessile drops or buoyant and captive bubbles.
Rheological studies are available in the basic version.
Well suited to determine the contact angle of liquids on solid surface.

Instrumental parts

- Basic platform on which all parts are safely mounted
- Manual x/y/z-axis
- Graphic color TFT touch display 7’’ resolution 800 x 480 pixel
- Automatic computer-controlled precise dosing system
- Mechanically adjustable temperature controlled measuring cell (temperature range 10 to 100 °C)
- Industrial IEEE1394A-FireWire CMOS-camera with fixed objectives
- LED lighting with continuously adjustable intensity

Measurement Features
- Surface and interfacial tension of liquids
- Static  and  dynamic contact  angle according to the sessile drop method
- Determination of surface free energy
- Surface rheological studies to measure the dilational elasticity and viscosity
- Capillary pressure measurements for iso-dense liquid-liquid systems (optional modul DPA-1M)
- Surface   rheological  studies  at   higher   frequency (optional module ODBA-1M)
- Direct  drop-drop,  bubble-bubble  and  drop-bubble interactions  (optional module DBMM-1M)
- Fluid   dynamic  experiments  with  optional set-up incl. our own high speed video camera HSC

Main features of the software
- on-line interfacial tension/contact angle calculation
- very   accurate  control  loop  to  keep constant   either  volume  or  area of drop or bubble
- smooth oscillations with dosing system
- harmonic   and   transient   relaxation   experiments
- calculation  of  the  dilation  rheological parameters from   relaxation   measurements via Fourier analysis
- calculation of the surface free energy of solids (different methods)

Technical Specifications

Range of Surface and Interfacial tension
1 to 2000 mN/m
resolution: ± 0.01 mN/m
Range of contact angle measurement
1° to 179°

accuracy ±0.2°
built-in automatic dosing system
(optional second automatic dosing system)
Measuring options

surface / interfacial tension
dilational elasticity and viscosity
contact angle
surface free energy
drop/bubble oscillations 0.001 to 0.5 Hz (basic version)
up to 100 Hz (ODBA-1M module)
Additional measurement modules
drop pressure module DPA-1M
oscillating drop bubble oscillation module ODBA-1M
drop bubble micro manipulator DBMM-1M
manual fixed or zoom objectives
Industrial 3.1 MP CMOS-camera:
 resolution 2048 x 1536 pixels
USB 3.0

Frame rate
Rates for standard camera:
60 images/s at resolution 2048x1536 pixels
370 images/s at resolution 640x480 pixels
740 images/s at resolution 640x240 pixels
1500 images/s at resolution 640x120 pixels
manual x-axis, manual y-axis, manual z-axis
LED, software controlled light intensity
embedded software
free update over 1 year after purchase
Operation Modes
Stand-alone (touch display, mouse, keyboard) or via PC, Smartphone (Android)
Supported OS
Windows 7, 8, 8.1, 10 or 11
1 GB Ethernet
3 x USB 2.0
WiFi (option)
DisplayPort (DVI/HDMI) res. up to 1920x1200
Size of device (L xW x H)
700 x 200 x 270 mm (standard version)
3 kg
Power supply
external 100 … 240 AC to 24 VDC, 40 W
Extra accessories
adjustable temperature controlled cell
additional automatically controlled dosing system (up to 4 systems)
coaxial double capillary for drop exchange
liquid exchange cell
piezo control unit
special contact angle cell
high temperature cells
SINTERFACE Technologies e.K
Müggelseedamm 70
12587 Berlin

+49 (0)30 23544406
+49 (0)30 23535716

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