High-Temperature, High Shear Rate Rotational (Absolute) Viscosity: The coaxial Rotor/Stator design permits the exact measurement of rotor position and the torque response of the liquid’s resistance to flow (viscous friction), which determines the apparent fluid viscosity. Applying a constant and linear shear rate profile continually to the fluid makes the TBS an absolute viscometer where the ‘true’ shear rate is calculated from known dimensions and speed of rotation. The TBS measures the viscosities of fresh and used oils at multiple select shear rates and temperatures. This proves particularly useful with multi-grade oils and their influence on fuel efficiency.
Developed in 1979 and under several patents, the TBS Viscometer became the world’s first high shear viscometer. It remains the modern benchmark ‘referee’ instrument for HTHS viscometry due to its innovative measurement technique, robust design, and notable operational versatility.
This newest TBS model is completely redesigned and re-innovated providing multiple enhancements to electrical and temperature components, automation, calibrations, and oil injection features, dramatically improving the overall user experience. These advancements promote simplified operations and less reference oil usage with no separate components while offering the same or better precision and robustness as previous TBS models.
HTHS Newtonian Reference Oils
HTHS Non-Newtonian Reference Oils
Additional TBS Reference Oils
R-100 | RL 236*
NNR-03 | RL 240*
R-200 | R-2200 | RL 241*
R-300 | R-2300
R-350 | R-2350 | RL 242*
R-400 | RL 238*
R-450 | R-2450 | RL 239*
R-500 | RL 237*
For a complete listing of part numbers and available container sizes of Tannas Reference Oils, please review the Tannas Reference Oils & Catalysts Parts List.
Visit our Certified Reference Materials page to download SDS sheets or Oil Certificates.
Reference Oils & Catalysts
330100: 150°C Ref Oil Package ½ GAL
330102: 100°C Ref Oil Package ½ GAL
330103: 80°C Ref Oil Package ½ GAL
020001: BIF-03 (Pint) Ref Oil
330000: Tapered Bearing Simulator (TBS) Viscometer, TBS 3000, 120V-220V, 50/60 Hz Power
TBS Spares & Consumable
300319: Collet Assembly Tool
300514: AutoSampler Vials (50 pack) – Disposable
300548: Filter Paper (50 pack)
300949: Collet Shaft (5/pk)
330202: Pump O-Rings, TBS 3000 (5/pk)
330041: TBS 3000 Siamese Collet Assembly
330109: Alignment Tool: TBS 3000 series
330040: RTD ASM, TBS 3000
330187: Stator Heater ASM, TBS 3000
330221: TBS 3000 Oil Inlet Tubing Assembly
330198: TBS 3000 Alignment Assembly
330061: Lid Assembly: 1/2 – 1 Gallon
330063: Sample Filter Set
300521: TBS Dial Indicator
330010: Stator Cover
330164: TBS 3000 Rotor/Stator Assembly with Heat Sink
Dual–ring, 40-position Sample Carousel with Auto Sample Receiver Arm.