Suitable for measuring the Kinematic Viscosity of biodiesel & diesel blends
- Fully compliant with ASTM D445
- Up to 4 measuring positions
- Automatic flow time measurement
- In-situ solvent cleaning & drying
- User friendly PC system
Advantages:
- Uses standard ASTM Ubbelohde viscometer
- Independent calibration provided by ISO 17025 laboratory
- Modular design
- Acetone resistant valves
- Precision well inside test requirements
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RHEOTEK BioVis Viscometer System
Applications include:
- 100% biodiesel (B100)
- Biodiesel & diesel blends
- Diesel 1D, 2D
Biodiesel fuels and diesels are required to be certified to international standards EN 590, DIN 51606 and EN 14214 as well as ASTM specifications (e.g. D 975 and D 6751). These specifications require kinematic viscosity to be measured in accordance with ASTM D445/ISO 3104. The RHEOTEK BioVis strictly adheres to these methods, complying in every respect.
Compliance to ASTM D 445 is achieved by using a glass capillary viscometer tube (ASTM Ubbelohde design), in an automated assembly with each step of the method pre-programmed. This removes the possibility to deviate from the method, as well as ensuring the most precise results.
The powerful BioVis software package records all flow time measurements and states the precision obtained for each result. Full traceability of measurements is provided.
PRINCIPLE OF OPERATION
The RHEOTEK BioVis uses ASTM Ubbelohde viscometer tubes to make precise flow time measurements. Each tube is calibrated with a certified constant, using calibration data produced by the PSL ISO 17025 accredited laboratory. Samples are loaded into the viscometer, via the unique RHEOTEK filling station (no syringe required). An internal pump pushes the sample up into the capillary tube to position it for measurement.
The sample is released and the flow time is automatically measured by the timing sensors. On completion of the first run, the sample is once again pushed up into the capillary tube, and a second consecutive flow time is measured. The BioVis software will then calculate the kinematic viscosity result.
SAFE VACUUM (IN-SITU) CLEANING AND DRYING
On completion of the measurement process, the BioVis will automatically use a “safe vac” system to clean and dry the Ubbelohde viscometer tube using suitable solvents. The waste sample and solvent is taken to a waste container, and the system is air dried, leaving it ready for the next sample.
BioVis offers the user a low cost, reliable technology with ISO 17025 certification providing the highest automated accuracy for Biofuels.
