Omnitek S-flow Kinematic Viscometer
Omnitek S-flow kinematic viscometer
Automated Houillon viscometer system
The S-flow range of instruments consist of compact, bench-top automatic viscometry systems for the analysis of Newtonian fl uids. It complies fully with in ASTM D7279 and as such, gives full correlation to ASTM D445. It is the ideal system for used oil analysis labs that need to test a wide range of lubricant viscosities.
The S-flow range of instruments consist of compact, bench-top automatic viscometry systems for the analysis of Newtonian fluids. It complies fully with in ASTM D7279 and as such, gives full correlation to ASTM D445. It is the ideal system for used oil analysis labs that need to test a wide range of lubricant viscosities.
“The S-flow system was designed for maximum throughput and ease of use while minimizing sample quantity and solvent consumption. It is the ideal viscometer for quick and accurate results”
Fast & accurate
The S-flow system is a self-contained viscometer system that consists of a thermostatic bath with circular heater and a control column. The bath contains 4 viscometer tubes together with optical sensors to detect the fl ow of the sample through the tubes. All measuring tubes function independently of each other. The control column has an LCD display that provides the user with information about the system’s status and an array of LED’s indicate the current status of each measuring tube. Although a PC is not required to operate the instrument, additional software is available for operationg and data storage and reporting.
The entire cycle time ranges 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. The operator needs only to return after the system has completed the measurement and cleaned the tube.
Optional accessories & upgrades
Dual solvent cleaning
A suitable solvent used for cleaning should have the following two main characteristics:
- It should be able to dissolve the sample that was tested, i.e. clean the tube
- It should evaporate quickly enough at the test temperature so that the tube is dry after cleaning
If the solvent used does have the ability to dissolve the sample, but does not evaporate quickly enough, a second solvent can be used to clean out the first solvent, as well as dry the tube. Usually, low boiling solvents are used for this purpose, such as Acetone or MEK. All fittings and valves on the system are fully chemically resistant and allow for the use of Acetone and MEK.
Cooling spiral & external chiller
For measurements close to ambient (± 30 °C), an additional external chiller is required to create sufficient offset for the temperature control unit. Each bath needs to be fitted with a cooling spiral, to which an external circulation chiller can be easily connected. Complete with tubing and fittings. Cooling spiral and external chiller will be supplied separately on request.
Omnitek S-flow systems operate on clean 5-6 bar compressed air. Suitable compressor can be supply from Omnitek if no compressed air is available.
All Omnitek S-flow systems can be operated directly from the keypad interface, and both calibration and viscosity measurements can be performed without PC or software. However, to have more control, dedicated software is available, which can be used to control up to 4 individual systems. Several system settings can be monitored per system, such as:
- Tube ID / Tube constant
- Minimum / maximum flow time per tube
- Reference viscosity in case of calibrations
- Required filling volume
- Allowed spread between consecutive samples
- Yes / No real-time Viscosity Index calculation (only on S-flow 3000 VI)
- Cleaning and drying settings
- Draining time of solvent
- Number of individual solvent injections
- Duration of 1 solvent injection
- Time between solvent injections
- Drying time
For every tube / measurement information is given, such as:
- Measurement stage (e.g. Measuring, Calibrating, Cleaning, Drying, etc)
- Registered flow-time per measurement
- Maximum / minimum flow-time per sample
- Average flow-time and result (viscosity or calibration constant)
- Depending on pre-set spread measurements can be excluded from calculations and automatically a new measurement can be started instead
Omnitek offers “Robotic Operation” for models S-flow 1200 and 3000 VI for customers that run large numbers of samples (>500 samples per day) and want to automate their sampling process. As each laboratory will have its own requirements, automation is a highly customized products which requires elaborate preparation. Please contact us for specific solutions to your sampling needs .
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Omnitek S-flow Kinematic Viscometer
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