Frequently Asked Questions TBS™ | HTHS Tapered Bearing Simulator Viscometer
- Power source: 115/220 V, 50/60 Hz
- One outlet for Console Box
- One outlet for Laptop computer
- One outlet for AutoSampler
- One outlet for optional TEC bath (plugged into wall if supplied as 220V)
- 60 PSI Dry air supply with flexible tubing adapter size of 0.25” (used to help maintain sample temperature when operating at higher shear rates and/or temperatures below 120°C.) The 0.25” flexible tubing is included with the equipment.
- Vibration-free table space as per equipment dimensions of 48"W x 26"D x 31"H (122 x 66 x 79 cm). Additional space may be necessary for printer.
- Temperature controlled and draft-free environment.
- Cyclohexane or other equivalent hydrocarbon solvent for cleaning the oil bottles and syringes between tests.
- VarClean (available from Tannas) for periodic cleaning of the rotor/stator (approximately every six months depending upon instrument usage).
- Oil sump container for collection of waste oil. (Ensure the Drain Tube is not lower than the waste oil level).
- Shear rate has changed due to wear: Adjust the
platform position as follows: For every +0.05 cP off from the viscosity on the Reference
Oil container label (i.e., NNR-03 @ 3.55 cP) adjust operating position by +0.02
mm (+2 small divisions). For every -0.05 cP, adjust the operating position by
-0.02 mm (-2 small divisions).
- Temperature in the room has varied more than ± 2°C
causing the torque values to shift: Control room temperature, use the TBS
Shield and/or use the Oil Saver Software that adjusts torque values when these
- Be sure the Reference Oils are not expired or
old. It is important to always keep the
oil bottles capped and stored at room temperature.
- The Rotor/Stator may need to be cleaned. Follow the VarClean procedure for cleaning
the Rotor/Stator set.
- Ensure the Drain Tube is not lower than the
waste oil level.
- Check the alignment of the Rotor/Stator and that the
Collet Wire is not bent.
- Poor temperature control: Make sure the RTD is
pushed all the way down into the Stator or replace the RTD.
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