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Hand-held Tensiometer for Process Monitoring and Quality Control



The mobile hand-held Tensiometer measures the surface tension as well as the surfactant concentration easily and quickly in the laboratory and at the production line. It directly shows the measuring results on a comfortable display and alerts the user if defined limit values are exceeded.

Display of surfactant concentration within defined limits

Comparability of measuring values with all SITA lab and process measuring devices

Adjustable high dynamic bubble lifetime range: 15 ms…20.000 ms


    Patented and optimized capillary for process use

    Robust device housing for atline measurement

    Comfortable suitcase for transport and device storage, also useful as working surface


      Intuitive operation: simple and fast measuring as well as controlling

      Mobile hand-held tensiometer: no PC or notebook required

        25 measuring profiles for bath control, process documentation and more

        Application fields


        The DynoTester+ is especially used in following applications:

        - Controlling the surfactant concentration in industrial parts cleaning industry
        - Monitoring the surfactant concentration in electroplating baths
        - Measuring the surface tension of liquids at the plant (atline) or in the laboratory (offline)
        - Quality control of inkjet inks, paints and lacquers/varnishes
        - Incoming and outgoing inspections of surfactant containing goods
        - Mobile use for external work

        For your security our application engineers advise you, if the DynoTester+ is suitable for your application. Furthermore, we test your samples and develop an appropriate controlling procedure according to your processes.

        Result: The DynoTester+ optimally supports you in quality control and process monitoring.

        Here you can find further application examples [..]

        Measuring principle


        Like all SITA Tensiometer, the DynoTester+ is based on the bubble pressure method for measuring the dynamic surface tension of liquids.

        The principle of the bubble pressure method is, that an air stream is lead through a capillary into the process liquid. A sensor measures the pressure which is needed to generate a bubble. (more...).

        Technical data

        Surface tension
        Measuring range 10…100 mN/m (dyn/cm)
        Resolution 0.1 mN/m (dyn/cm)
        Bubble lifetime
        Adjustable range 15…20,000 ms
        Resolution 1 ms
        Sample temperature
        Measuring range 0…100 °C
        Resolution 0.1 K
        Power Supply
        Mains adapter 100...240 V
        47...63 Hz
        Battery (Lion, integrated)

        3.6 V / 1,950 mAh
        min. 10 h operating hours

        Power consumption 2 W max.
        Interface, Storage, Dimensions, Weight
        USB interface data transfer, battery charging
        Display 124 x 168 pixel,
        Storage 25 values/profile
        Dimensions (WxHxD) 75 x 168 x 35 in mm
        Weight of instrument 230 g


        The Windows-Software SITA-ProcessLog allows an easy control of all functions of the tensiometer with the PC as well as a comfortable management of the saved measuring data.


        Management and graphical analysis of saved measuring data
        Documentation and evaluation of the process and products‘ characteristics
        Simple and easy preparation of measuring reports
        Controlling the measurement via PC in the laboratory
        Simple generation of concentration curves based on defined samples

        For more information click here [..].



        Type I PEEK

        easy manual cleaning for paints and varnishes

        Type II PEEK

        for monitoring process liquids

        Type III Glass

        for agressive liquids

        Disposal capillaries PTFE

        for special cases

        Device protection

        Acid protection kit

        PE jacket for sensor head or device, borosilicate glass protection for temperature probe, glass cover

        Sample handling

        Sample vessels 50 ml

        Mini sample vessels - 5 ml

        for measuring very small sample volumes

        Double walled glass vessel

        for use with thermal liquid circulator (thermostat) including special cover and insulation

        Laboratory devices

        Heating plate with magnetic stirrer and stand for SITA DynoTester+


        Scope of delivery

        - Measuring device DynoTester+

        - Robust suitcase

        - 2 Capillaries PEEK

        - Power supply

        - USB-cable

        - Stand

        - Instrument fastener

        - 2 sample vessels 50 ml

        - Operating instruction

        - Calibration certificate


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        A business unit of SITA Messtechnik GmbH.

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