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Precision Capillary Viscometer System
Full method compliance combined with the convenience of completely automated measurement.
Suitable for measuring the viscosity of new oils, residual fuels and distillate fuels, as well as used oils in full compliance with IP 543. Instrument performance meets precision criteria of ASTM D445, IP 71 & ISO 3104.
PRINCIPLE OF OPERATION
At the heart of the AV-2 are two traditional capillary tubes, which determine viscosity by measuring flow times. This ensures optimal precision of measurement but without the inconvenience of maintaining a liquid bath. Instead, the AV-2 combines advanced multi-processor systems, accurate thermal control, super sensitive micro-detectors and very efficient in-situ automatic cleaning system. The instrument is specially well suited to measure black oils and residual fuels.
PRECISION
The RHEOTEK AV-2 is fully compliant with standard test method IP 543 - Determination of the dynamic viscosity of distillate & residual fuel oils and calculation of kinematic viscosity - Automatic capillary tube method. This method shows that there is good correlation between viscosities determined by the automatic capillary tube method and IP 71, ISO 3104 & ASTM D 445 manual kinematic viscosity results.
VISCOSITY & DENSITY
The AV-2 measures flow times & determines viscosity in mPa.s. In addition some models determine density to a precision of four decimal places. The two measured values are used to report kinematic viscosity in mm2/s, cSt. The result database records all measurements and calculations in order to provide complete traceability of results.
RESULTS DATABASE
The RHEOTEK AV-2 is equipped with a very powerful database for extensive management of measurement results. A number of different filtering and sorting options are available for automatic generation of reports. The flexible software allows for the PSL installation engineer to configure this function according to the practices in the individual laboratory.
The AV-2 is available in 6 standard models based upon the following applications:
LUBRICANTS
AV-2 Lubricants
Suitable for measuring the kinematic viscosity of new and/or used lubricating oils at 40 and 100șC. Each sample is measured at 40 and 100șC simultaneously.
Reported results include kinematic viscosity and Viscosity Index.
DISTILLATE AND RESIDUAL FUELS
AV-2 40/50 Fuels
Suitable for measuring the kinematic viscosity of distillate fuels (diesel and gas oil) at 40 șC and residual fuel oil at 50șC. Two samples are measured simultaneously. Distillates are run first on both viscometers with the temperature set to 40șC. The temperature can then be changed to 50șC.
AV-2 Refinery Fuels
Suitable for measuring the kinematic viscosity of distillate fuels (diesel and gas oil) at 40șC and residual fuel oil at 50șC, 80șC or 100șC. Distillates run on viscometer 1 and residual fuel oils on Viscometer 2. Viscometer 2 can be set to 50șC, 80șC or 100șC depending on what temperature the laboratory requires.
AV-2 RFO
Suitable for measuring the kinematic viscosity of residual fuel oil at 50 șC, 80șC or 100șC. Two samples are measured simultaneously.
Separate auto sampler needles load simultaneously from two sample vials. Viscometer 1 & 2 operate at the same temperature in the range 50șC to 100șC.
USED MOTOR OILS
AV-2 UMO(40)
Suitable for measuring the viscosity of used motor oil at 40 șC. 2 samples are measured simultaneously. The AV-2 is optimized for high sample throughput with a small sample volume (<5ml). Separate auto sampler needs load from two sample vials simultaneously. Viscometer 1 & 2 operate at 40șC.
AV-2 UMO (100)
Suitable for measuring the viscosity of used motor oil at 100șC. 2 samples measured simultaneously. The AV-2 is optimized for high sample throughput with small sample volume (<5ml). Separate auto sampler needles load from 2 sample vials simultaneously. Viscometer 1 & 2 operate at 100șC.
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meters testing residual fuel oils. |
