Highlights
Omnitek ‘BitUVisc’ is a programmable, fully automatic kinematic viscometer specially designed to handle highly viscous samples at high temperatures.
The system can process samples with viscosities ranging up to 120,000 mm2/s, up to 150°C. It fully complies with ASTM D445, D446, D2170 and AASHTO T201.
There are 2 different models available: 110 and 120. BitUVisc 110 features a single thermostatic bath with 1 viscometer tube whereas BitUVisc 120 model holds 2 viscometer tubes in a single bath. All BitUVisc instruments are equipped with auto-sampling, preheating, fully automatic dual solvent cleaning and drying.
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 150°C and sample preheating up to 200°C.
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 200°C and uses preheated solvent to effectively clean the viscometer tube. The BitUVisc is fitted with 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.
Features
- Applicable for fuels, base oils, formulated oils, highly viscous samples like vacuum residues, additives, crude oilswaxes, heavy fuel oils, polymers, asphalts, etc.
- Meets all ASTM, EN, ISO, DIN, AASHTO T201, EN 12595 and standards related to kinematic viscosity standards
- Extremely accurate temperature control
- Extremely accurate flow-time measurement independent of fluid type
- Viscometer filling by vacuum method
- Innovative and efficient viscometer tube cleaning allowing cross contamination free operation
- Easy viscometer tube exchange
- Chemically resistant to an extended range of fluids and solvents
- Compact design
Features
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BitUVisc 110 / 120
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| Measuring range |
Up to 120,000 mm2/s, up to 150°C |
| Temperature range |
15 – 150°C * |
| Temperature stability |
15°C to 100°C ± 0.01°C *
Up to 150°C, ± 0.03°C
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Preheater temperature
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Up to 200°C
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Timer accuracy
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0.001 s
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Sample volume
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12 ml
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Sample introduction
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Vacuum
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Solvent consumption
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10 - 30 ml per cycle, sample dependent
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Sample throughput
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BitUVisc 110: up to 2 measurements per hour **
BitUVisc 120: up to 4 measurements per hour **
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Applicable standards
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ASTM D445/D446, ASTM D2170
AASHTO T201, EN 12595
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Viscometer type
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Ubbelohde based
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Duplo Measurement
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Yes
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Sensor type
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Thermal
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Built-in preheater
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Yes
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Dual Solvent cleaning
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Yes
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Communication
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RS-232C
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PC software
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Yes
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PC Control
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Multiple instruments controlled with 1 PC
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Data Export
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USB storage device
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Dimensions
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110 / 120: 38 x 62 x 78 cm (w x d x h)
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Weight
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54 kg (empty)
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Power requirement
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10A @ 230 V
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* For temperatures around ambient, an external cooling circulator is required
** Measurements per/hour; depends on viscosity, tube constant, temperature and solvents chosen. Measurement cycles are given for a sample with a viscosity around 50.000 mm2/s @ 40°C.
BitUVisc series optional accessories
The following items are optional accessories and upgrades to the instrument.
Cooling circulator
For measurements, close to ambient (± 8°C), an additional cooling circulator is required to create sufficient offset for the temperature control unit. The bath needs to be fitted with a cooling spiral, to which an external cooling circulator can be easily connected. Complete with tubing and fittings. Cooling circulator will be supplied separately on request.
Compressor
Omnitek BitUVisc systems operate on clean 5 bar compressed air. If not available on-site a stand-alone version with @ approx. 5 l/min.
Pedestal base
Pedestal base can be supplied from Omnitek for floor-standing installation.
PC & Printer
PC can be supplied locally or from Omnitek. Omnitek supplies a new generation laptop. Minimum operation software should be Windows 7.
Any kind of printer can be used if instrument is connected to a PC by software. Printer can be supplied locally or from Omnitek. Omnitek supplies the latest model laser printer.
ASTM Thermometers
All BitUVisc units can be equipped with ASTM thermometers. The recommended thermometers that can be supplied are the modern digital contact thermometers (DCT), used at multiple temperatures.
Glass sample cups
For temperature above 105°C, glass sample cups are required for the sample measurement.
THE BitUVisc IS SUPPLIED WITH
20-fold viscometer tubes
High temperature bath oil
Reference standards
Advanced PC software
All parts required for standard operation
. Reference standards.
. Cleaning solvents.
ordering information
Dimensions
Dimensions 38 x 62 x 78 cm
Weight 54 kg
