Omnitek BitUVisc viscometer

FULLY AUTOMATIC VISCOMETER FOR HIGHLY VISCOUS SAMPLES UP TO 120,000 mm2/s

Finally an instrument that eliminates the need for the tedious, labour intensive manual loading, measurement and cleaning of high viscosity samples

• For high temperature, high viscosity applications
• Fully automatic measurement and cleaning
• Stand alone or PC control
• Preheated dual solvent cleaning

Omnitek introduces the newest member to the U-Visc family of fully automatic viscometer systems. Specifically developed to cover sample types which pose great challenges to automatic sampling, measurement and cleaning, because of their high pour point and viscosity.

Flexible and reliable

The instrument was designed to be versatile and flexible, yet easy to use to cover the hardest applications. Different models are available with 1 or 2 viscometer tubes, allowing for the analysis of a wide range of viscosities and sample types.

Viscometer tubes are based on the well-known and proven Ubbelohde design. Using specially designed thermal sensors, these tubes allow the detection of fully opaque fluids without any

problems or limitations and eliminate the need to use the reverse flow tubes. The standard configuration offers viscosity measurement up to 150ºC and sample preheating up to 200ºC

Sophisticated temperature control ensures that measurements are carried out well within the required temperature stability. The system features an innovative single position auto-sampling which provides integrated heating of the sample up to 200ºC and uses preheated solvent to effectively clean the viscometer tube. The BitUVisc uses the special designed duplo viscometer tubes for unstable samples such as vacuum residues, additives, crude oils, waxes, heavy fuel oils, polymers, asphalts, etc., which typically show poor determinability when sampled repeatedly. These tubes have 2 measuring sections with an approximately similar tube constant. This allows for an actual duplo determination while only sampling once.

The instrument requires a PC for full operation, which is controlled through an advanced PC software application but it can also be controlled as a stand-alone unit through the responsive color touchscreen interface. PC software allows the operator to specify optimized and fully customizable test methods for each individual sample with the click of a mouse

Omnitek S-flow IV

The newest generation of S-flow systems offers the ultimate in fast, accurate viscosity testing and now also features an optional autosampler for fully unattended operation.

• Optional autosampler
• Simultaneous tests at 2 temperatures
• High throughput: up to 80 samples per hour
• Fast & easy tube replacement

The S-flow IV+ instrument consists of compact, bench-top automated viscometry systems for the analysis of Newtonian fluids. It complies fully with ASTM D7279 and as such, gives full correlation with ASTM D445. It is the ideal system for used oil labs that need to test a wide range of lubricant viscosities

Fast & accurate

The latest generation of S-flow builds on the strong foundation of its predecessors to offer the ultimate in automatic viscosity testing of Newtonian samples such as petroleum products. The system offers all the tried and tested advantages of a Houillon-type tube design such as short process times, small sample volume and low solvent consumption, but now also includes an optional auto-sampler to allow for fully unattended operation. All controlled from a central user interface that takes care of result storage, auto-sampler control, VI calculations and much more.

2 temperatures

The new S-flow IV+ consists of a 2 bath system with 2 tubes in each bath, providing a total of 4 tubes. The baths were designed to work independently, making it possible to use both baths at the same temperature, or at different temperature, ranging from 20°C to 120°C. Other options include dual solvent cleaning and integrated duplo testing which obtains 2 flow time determinations with only 1 sample injection.

Additional parameters such as tube constants and cleaning cycle are also controlled by the operator, because the sample volume is very low (0.3-1 ml). The entire measurement cycle is very short. The complete cycle time ranges are between 3-10 minutes per tube, allowing a throughput of up to 80 tests per hour. After the injection of the sample, operator presence is no longer required.

Options and accessories

All measurement parameters, such as warmup times and cleaning parameters can be set through the high resolution 12” touchscreen or with optional PC software. The diagnostic system alerts the operator to possible issues such as empty solvent supply tanks, full waste bottles and other potential issues. The optional auto-sampler is fully modular and in-field upgradeable, meaning you can purchase the analyser first and then upgrade to auto-sampling when the need arises.

Omnitek U-Visc kinematic viscometer

FULL RANGE OF AUTOMATIC VISCOMETRY SYSTEMS FOR LUBRICANTS AND OTHER PETROLEUM PRODUCTS

“The U-Visc viscometry system was designed with full ASTM D445 compliance in mind, combined with low solvent consumption, high unattended throughput, ease of use and reliability

• Autosampler carrousel
• Sampling using vacuum or pressure
• High throughput
• Optional duplo viscometer tubes for unstable samples

The Omnitek U-Visc combines several unique features, making it the instrument of choice in many applications, ranging from QC to R&D to used oil analysis. While offering full compliance with ASTM D445/446, the specially designed viscometer tubes cover a 100-fold range.

Versatile and reliable

The tubes are based on the well-known and proven Ubbelohde design, but only require 8-16 ml of sample and approx. 12-15 ml of solvent for each cleaning cycle. Available with single or dual solvent cleaning, the instrument measures kinematic viscosity in lubricants between 0.15 and 25,000 mm2 /s.

Designed to be versatile and flexible, yet easy to use. Different models are available ranging from 1 bath with 1 or 2 tubes, up to 2 baths with 1 or 2 tubes per bath, where each bath works independently. Sophisticated temperature control ensures that measurements are carried out according to D445 requirements. Each bath features a sampling tray with 16 samples per tube, allowing completely unattended operation at different temperatures. Depending on the viscosity of the sample, the instrument can process up to 10 samples per tube per hour, leading to a maximum capacity of up to 40 samples per hour, satisfying even the needs of high volume labs running several hundred samples per day.

The U-Visc requires a PC for operation but can also be controlled as a stand-alone unit through the responsive color touchscreen interface. For data collection, storage, calculations and reporting, an advanced PC software application is provided with the instrument, which can gather data from multiple instruments simultaneously.

For 200 series, if the baths are run at 40 and 100ºC, the instrument will automatically calculate the sample’s Viscosity Index, based on the results from both baths.

AVAILABLE MODELS