BitUVisc kinematic 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”.
Fully automatic
Highly accuarate
Handles extreme samples
Easy to use
Duplo viscometer tubes
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
BitUVisc 110 / 120
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

Preheater temperature

Up to 200°C

Timer accuracy

0.001 s

Sample volume

12 ml 

Sample introduction

Vacuum 

Solvent consumption

20 - 30 ml per cycle, sample dependent 

Sample throughput

BitUVisc 110: up to 2 measurements per hour **

BitUVisc 120: up to 4 measurements per hour **

Applicable standards

ASTM D445/D446, ASTM D2170 
AASHTO T201, EN 12595

Viscometer type

Ubbelohde based

Duplo Measurement

Yes

Sensor type

Thermal 

Built-in preheater

Yes

Dual Solvent cleaning

Yes

Communication

RS-232C

PC software

Yes

PC Control

Multiple instruments controlled with 1 PC

Data Export

USB storage device

Dimensions 

110 / 120: 38 x 62 x 78 cm (w x d x h) 

Weight

54 kg (empty)

Power requirement

10A @ 230 V

*  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. 

Features
  • Applicable for fuels, base oils, formulated oils, highly viscous samples like vacuum residues, additives, crude oils​waxes, 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

This product is compliant with the following test methods:

  •  ASTM D445 
  •  ASTM D446 
  •  ASTM D2170 
  •  AASHTO T201 
  •  EN 12595
Industries
Samples
Refineries
Bitumen (Asphalt Plants)
Heavy Fuel Oils (HFO)

Road Construction & Paving

Residual Fuel Oils (RFO)

Additive Manufacturers

Vacuum Residues

Lubricant Manufacturers

Bitumens (Asphalts)

Third Party Labs

Waxy samples
Crude Oils 

Research & Development Labs

Lubricating oils 

Quality Control Labs

Additives

For other fluids / solutions please send your inquire