Tensiometru Analizor de tensiunii dinamice la suprafata si suprafete interfaciale

ro Tensiometre » Aparat de performanţă modulara pentru determinarea tensiunii de suprafaţă / unghiului de contact si concentratie

uk Tensiometers » Surface tension and surfactant concentration analyzer

Analizor tensiunii interfaciale şi de suprafata

Model SITA DynoTester+  

*Produsul poate fi achizitionat si prin SEAP

Solicit oferta personalizata »

 

Tensiometru universal de forta pentru analiza suprafata surfactanti

Permite determinarea unei serii de proprietati la suprafata a materialelor: aderenta, adsorbtia, porozitatea, solubilitatea materialelor, biocompatibilitatea etc.
Tensiometria de forta a devenit metoda utilizata la caracterizarea lichidelor.
Este tehnica cel mai des utilizata la masurarea concentratiei critice micelare. In plus, este singura metoda utilizata la determinarea absorbtiei si a unghiului de contact in cazul pudrelor sau a fibrelor utilizand metoda Wash-burn. Umiditatea materialelor textile poate fi aplicata de asemenea cu tensiometrele de forta

Principiul de masurare

Atunci cand un solid va atinge suprafata unui lichid, lichidul tinde sa formeze un menisc. Forta exercitata de acest menisc este masurata si analizata pentru determinarea tensiunii superficiale. Utilizand o suprafata mare, aceste sonde precum cea de Pt DuNOuy sau placile Wilhemy permit o masurare precisa a fortelor de suprafata.
Toate aceste tensiometre de forta Sigma, vor masura tensiunea la suprafata cat si cea interfaciala folosind placi sau inele. Calculele de corectie pentru aceste inele sunt obtinute utilizand modelele Huh si Mason (Harkins si Jordan, Zuidema & Waters sunt de asemenea disponibile).
Aceste tensiometre Sigma, sunt instrumente de masura precise, usor de utilizat. Toate prezinta carcateristicile unor balante de precizie inalta cu un mecansim nou, un software intuitiv si un design nou, deschis pentru un acces cu usurinta la toate partile instrumentului.

descarca brosura »

Tensiometer for Process Monitoring and Quality Control

Measuring the surface tension & controlling the surfactant concentration

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.

Precise

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

Robust

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

Flexible

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

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

Technical Data

  • Surface tension Measuring range: 10 .. 100 mN/m (dyn/cm)
  • Surface tension Resolution: 0.1 mN/m (dyn/cm)
  • Bubble lifetime Adjustable range: 15…20,000 ms
  • Range Resolution: 1 ms
  • Sample temperature Measuring range: 0.. 100°C
  • Tempreture Resolution: 0.1 K
  • Power Supply Mains adapter: 100 .. 240V / 47...63 Hz
  • Battery (Lion, integrated): 3.6 V / 1,950 mAh / min. 10 h operating hours
  • Battery charging: USB
  • Power consumption: 2 W max.
  • Interface: USB
  • Storage: 25 values/profile, data transfer
  • Display: 124 x 168 pixel, illuminated
  • Dimensions (WxHxD): 75 x 168 x 35 mm
  • Weight: 230 g

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 product's 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

Accesories

- 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
- Heating plate with magnetic stirrer and stand for SITA DynoTester+
- Double walled glass vessel for use with thermal liquid circulator (thermostat) including special cover and insulation
- Sample vessels 50 ml, 1 set = 10 pcs.
- Acid protection kit: Borosilicate glass protection for temperature probe, glass cover, PE jacket for sensor head or device
- Mini sample vessels / 5 ml

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

.. Download brochure »