About Sigma 702 / 702ET Force Tensiometer

UK based Dyne Testing offer Sigma 702 and 702ET, standalone force tensiometers offering high resolution and precision.  Direct measurements allow determination of a number of material and surface properties, such as dynamic contact angle, surface free energy, critical micelle concentration, wettability, surface and interfacial tension measurements.

The Sigma 702ET Transformer Oil Analyzer has been specifically designed to guide the user through the measurement of interfacial tension of transformer oil according to relevant standards.

Both instruments are standalone offering high resolution and precision for surface and interfacial tension measurements, as well as non-automatic CMC determination.

Sigma 702

The open design and convenient control keyboard operations makes the Sigma 702 extremely easy to use. Results are displayed on a large integrated digital screen. Comes with data collection software and can be connected to an external computer for additional data storage and simple reporting.

Sigma 702 can be used, for example, in the chemical industry or electronics industry to measure surface or interfacial tensions in quality control or R&D.

Allows precise temperature control via its integrated water-jacket vessel holder which is directly mounted on the motorised sample stage.

Sigma 702ET

The open design and convenient control keyboard operations makes the Sigma 702ET extremely easy to use. Results are displayed on a large integrated digital screen. The instrument comes with data collection software and can be connected to an external computer for additional data storage and simple reporting.

Sigma 702ET is specifically designed for oil-water interfacial tension (IFT) measurements. The instrument is particularly suitable for IFT determinations of transformer oils and hydrocarbon fuels in accordance with IEC 62961, ASTM D971 and IEC 60422 standards and comes with software designed for oil-water measurements.

Sigma 702ET is typically used in the energy industry to check the interfacial tension between transformer oils and water.

Measuring with Sigma 702/702ET

Results are displayed on a large integrated digital screen.  Open design and convenient control keyboard operations make Sigma 702 and 702ET extremely easy to use instruments.  Sigma 702 enables precise temperature control thanks to an integrated water-jacket vessel holder, mounted on a motorized sample stage.  Sigma 702ET is also equipped with a motorized sample stage, but without water jacket vessel order.  Sigma 702ET is specifically designed for oil-water interfacial tension measurements in line with ASTM and IEC standards.  A software designed for oil-water measurements is provided with the Sigma 702ET.  Sigma 702ET can also be connected to an external PC for additional data storage and simple reporting.  The data collection software is provided with the instrument.

Applications

Sigma 702 and 702ET are force tensiometers for determination of:

  • Surface tension
  • Interfacial tension
  • Critical micelle concentration
  • Absorption
  • Density

Specifications

Sigma 702 Sigma 702ET
Available Measurements
Surface tension Yes Yes
Interfacial tension Yes Yes
Critical micelle concentration Manual Manual
Dynamic contact angle No No
Surface free energy No No
Powder wettability No No
Density Yes Yes
Technical Specifications
Measuring range (mN/m) 1 to 1000 1 to 1000
Displayed resolution (mN/m) 0.01 0.01
Density range (g/cm³) 0 to 2.2 0 to 2.2
Maximum load (g) 5 5
Weighing resolution (mg) 0.01 0.01
Contact angle range
Contact angle resolution
Calibration & locking Manual Manual
Sample state Motorised Motorised
Temperature range (°C) -10 to +100 -10 to +100

Recommended system requirements

  • 1GHz processor, 1GB MB RAM, 40 GB hard disk drive (20GB free), 1 USB port
  • Accessories such as water bath and liquid dispenser may require a free RS-232 port

Operating system requirements

  • Windows 7 & 8 (32 or 64 bit), Windows Vista (32 bit), Windows XP SP3 (32 bit)

All Downloads

Filename Size Download
Sigma Force Tensiometers Brochure 1.04MB Download
Sigma Force Tensiometers Technical Specifications 0.37MB Download
Sigma 702-702ET Force Tensiometer Accessory List 0.47MB Download

Ordering Information

Part Number Description
40-Sigma 702 702 Tensiometer, 240VAC, 50 Hz including:

  • Super sensitive microbalance
  • Built-in large graphic LCD display
  • Motorised sample stage
  • Manual calibration and locking
  • Embedded software to measure Surface Tension & Interfacial Tension
40-Sigma 702ET 702ET Tensiometer, 240VAC, 50 Hz including:

  • Super sensitive micro balance
  • Built-in large graphic LCD display
  • Motorised sample stage
  • Manual calibration and locking
  • Embedded software to measure the density and oil-water interfacial tension of transformer oils according to the ASTM-D971 and IEC 62961 standards

Accessories

For further information about Accessories, see the Sigma 702 & 702ET Force Tensiometers Accessories Brochure.

Part Number Description
Environment and Sample Control: Temperature & Cabinet
40-T705ET Thermostatic vessel (from -10 to +100°C)
40-T115 Gas phase temperature controller
40-T102MC Bath/circulator, Julabo F12-MC
40-T102ME Bath/circulator, Julabo F12-ME
40-T102ME Temperature probe for the Julabo bath circulator F25ME
40-T102ED Bath/circulator, Julabo F12-ED
40-T202 Digital thermometer
40-T140CAB Cabinet
Density
40-T113 Density measuring device
Probes & Calibration
40-T106 Platinum Du Nouy ring
40-T106A Certificate for Du Nouy ring dimensions
40-T106B MIKES calibration certificate for Du Nouy ring
40-T107 Wilhelmy Plate, platinum plate with micro roughened surface
40-T107A Certificate for Wilhelmy plate dimensions
40-T107C MIKES calibration certificate for the Wilhelmy plate
40-T117B Certified calibration kit
40-T120 Calibration weight
40-T108 Ring re-form tool
Consumables
40-T104 Sample vessel, diameter 70mm, 5 pcs/box
40-T105 Sample vessel, diameter 50mm, 5 pcs/box
PC & Software
40-T130 Computer with pre-installed software
40-T702PR Printer
Maintenance & Services
40-STUP-EU Start up & training
40-SERV2 Service contract level 2
40-SERV 3 Extended warranty
  • Last updated: June 2024
  • Version: 1.0

Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.

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