The compact all-round Tensiometer measures the dynamic Surface tension in three different modes: Single, Auto and Online. This gives it all the functions for a wide range of measuring tasks such as analysis of Wetting behaviour, concentration control or determination of the influence of temperature of surfactant-containing liquids.
SINGLE-Mode - Single measurement
- Fast and reliable for control tasks
- Measures a value at defined parameters
- Determination of concentration through individual characteristic curves
AUTO-Mode - Measurement within an adjustable Bubble lifetime range
- Comfortable mode for R&D
- Automated scan of surfactant dynamics
- Characterisation of wetting behaviour
ONLINE-Mode - Continuous measurement
- Automatic continuous measurement over a period of time
- Continuous process monitoring
- Analysis of temperature influence
| Quantity | Surface tension in mN/m |
| Fields of application |
Analysis of the wetting behaviour of surfactants or surfactant-containing products Control of surfactant concentration Investigation of temperature dependence for cloud point analysis |
| Use |
3 Modes: SINGLE (one-point measurement), AUTO (automated scan), ONLINE (continuous measurement) Robust housing and optional acid protection Easy rinsing and calibration with water |
| Measurement |
Capillaries for process and laboratory use made of PEEK, PTFE or glass (Reusable and adapted to different liquids) Independent of immersion depth due to differential pressure method Independent control of the parameter bubble lifetime |
| Measurement monitoring | Water (DI) as calibration standard |
| Industry | Industrial parts cleaning, electroplating, paints & lacquers, inkjet inks and many more |
SITA tensiometers have been in use for over 25 years for these applications, among others:
- Control of surface tension and surfactant concentration in industrial parts cleaning
- Monitoring of the wetting agent concentration in galvanic coating and etching processes
- Quality inspection of ink-jet inks as well as paints and varnishes
- Measuring surface tension on the line or in the laboratory
- Product development for cleaning, electroplating, inks, paints etc.
- Analysis of the temperature behaviour of process chemicals
SITA application consultingdevelops measurement methods and control procedures for individual use in close consultation. This includes free trial measurements, characteristic curves, rental positions and consultations remotely or on site.
Like all SITA Tensiometer, the SITA pro line t15+ is based on the bubble pressure method for measuring the dynamic surface tension of liquids.
Therefore, as it can be seen in the picture, an air stream is lead through a Capillary into the process liquid and the pressure development for the bubble generation is measured.
| Bubble lifetime | ||
|---|---|---|
| Adjustable range | (15...30,000) ms | |
| Resolution | 1 ms | |
| Control deviation | adjustable, 1 to 10 % | |
| Measuring deviation | max. 1 ms | |
| Sample temperature | ||
|---|---|---|
| Measuring range | (0...100) °C | |
| Resolution | 0.1 °C | |
| Measuring deviation | max. 0.5 %, adjustable | |
| Reproducibility | 0.3 K | |
| Power supply | ||
|---|---|---|
| USB | 100...240 V / 5V | |
| Li-Ion battery | 3.6 V / 2,000 mAh, min. 10h operating time | |
| Max. power consumption | max. 2.5 W | |
| General data | ||
|---|---|---|
| USB-Interface | Data transfer | |
| Display | LCD, illuminated | |
| Number of measuring methods | 50 each for auto, online, single | |
| Memory | up to 1,000 memory spaces per measuring method | |
| Acceptable ambient temp. (storage/operation) | (-20...50) °C / (10...40) °C | |
| Measuring gas | Ambient air | |
| Dimensions (HxWxD) | 168x75x35 mm | |
| Weight | 270 g | |
Laboratory automation with the Windows-Software SITA LabSolution
- Automation of laboratory measurements and active ingredient analyses
- Intuitive operation
- User-defined sequences for recurrent measuring and controlling tasks (templates)
- Efficient preparation of experiments
- Measurement of temperature curves
- Simple generation of individual concentration curves
- Comfortable report function for creating measurement protocols and reports
Integration of a wide range of accessories for sample preparation and conditioning
- Burette (fluid dosing unit)
- Thermostat
- Magnetic stirrer, (heating) stirrer
Capillaries
Capillary PEEK type 1 – Laboratory standard
with high chemical resistance, easy to clean.
Capillary PEEK type 2 – Process standard
Shape-optimized capillary with high chemical resistance and precise tip for high repeatability,
reliable for permanent inline usage.
Capillary Glass type 3 – Special applications
Two-piece set with holder and borosilicate glass capillary with high chemical resistance.
Disposable capillary PTFE – Special applications
Two-piece set with holder and PTFE disposable capillary with highest chemical resistance.
Device protection
Acid protection
glass protection for temperature probe, glass cover
Acid protection, glas-free
PFA protection for temperature probe, 2 PTFE beakers with PTFE cover
Sample handling
Sample vessels (50 ml)
and suitable glass cover for sample measurement
Temperature control vessel
for sample vessel (50 ml) to connect to a thermostat, including sample vessel, glass cover and insulation
Laboratory devices
Automatic dispenser CAT Contibürette from μ10D
for dosing of liquids from 10 μl
Magnetic stirrer CAT M26
with heater, temperature sensor and stand
Publications
- Who cares about surface tension? / 2021
- Defining limit values for sufficient parts cleanliness / 2019
- Tensiometrie for monitoring the concentration of cleaning agents / 2014
- Analysing and monitoring surfactants - Process parameter surface tension / 2012
- High Process Reliability of Industrial Cleaning Processes by Measuring the Surfactant Concentration / 2012
- Controlled Cleaning by measuring surfactant concentration / 2009
- Automatic Dosage of Cleaning Agents and Efficient Cleanliness / 2008
References
SITA measuring devices have been successfully used in a variety of applications worldwide for over 25 years. The companies listed here represent just a small selection of our extensive customer base.
Simply get in touch with us. You can find the contact details of our sales and application department under contact persons.
For support in your country, please see our international sales partners.
Alternatively, send an e-mail to info@sita-messtechnik.de, call us at +49 351 288 53-0 or send us a message using the contact form.