TOKI SANGYO TV-150BH Rotational Viscometer

Overview

The TOKI SANGYO TV-150BH is a high-stability benchtop rotational viscometer engineered for precise, long-term viscosity measurement of Newtonian and mildly non-Newtonian fluids across an exceptionally wide dynamic range—from 100 to 40,000,000 mPa·s. It operates on the principle of coaxial cylinder (Couette) flow, where torque generated by fluid resistance against a rotating spindle immersed in the sample is measured via a torsion-wire and magnetic bearing system—eliminating mechanical contact between moving parts. This contactless sensing architecture ensures zero wear on critical components, enabling consistent calibration integrity and metrological stability over thousands of operational hours. Designed for routine QC laboratories, R&D facilities, and production environments requiring traceable, repeatable rheological data under ambient conditions, the TV-150BH complies with fundamental measurement principles outlined in ISO 2555, ASTM D2196, and JIS Z 8803, supporting both SI (mPa·s, Pa·s) and CGS (cP) unit reporting.

Key Features

• Contactless torque sensing using a precision torsion-wire and magnetic bearing assembly—no shaft drive, no frictional wear, and no periodic recalibration due to mechanical degradation.
• 3.5-inch full-color LCD touchscreen interface with intuitive icon-based navigation, real-time dual-parameter display (viscosity value + % torque), and automatic upper-limit indication during measurement.
• Quick-swap spindle mounting system: standardized plug-in spindles enable tool-free installation and removal—reducing cross-contamination risk and minimizing downtime between sample changes.
• High-resolution speed control from 0.1 to 100.0 rpm in 0.1-rpm increments, facilitating fine-grained shear rate profiling for yield stress estimation and flow curve approximation.
• Compact main unit (120 × 182 × 199 mm) with integrated base (300 × 310 × 436 mm) for vibration-damped operation on standard laboratory benches; total mass of only 2.4 kg simplifies relocation and ergonomic setup.
• Stainless-steel wetted parts ensure chemical compatibility with aqueous solutions, solvents, oils, polymer melts, and pharmaceutical suspensions—validated per USP analytical instrument qualification guidelines.

Sample Compatibility & Compliance

The TV-150BH accommodates a broad spectrum of industrial and scientific samples—including coatings, adhesives, food emulsions, cosmetic gels, ceramic slurries, and lubricants—provided they remain stable within ambient operating conditions (0–40 °C, RH <90% non-condensing). Its fixed geometry and calibrated spindle set support reproducible measurements aligned with ISO/IEC 17025-compliant testing workflows. While not intrinsically 21 CFR Part 11 compliant (as it lacks electronic audit trail functionality), the device supports GLP/GMP-aligned manual recordkeeping when used with controlled SOPs and printed report logs. All stainless-steel components meet FDA-recommended material standards for indirect food contact applications.

Software & Data Management

The TV-150BH operates as a standalone instrument with embedded firmware—no external PC or proprietary software required for basic operation. Measurement data (viscosity, torque %, RPM, timestamp) can be exported via USB to CSV format for integration into LIMS or statistical process control platforms. Optional PC connectivity kits (sold separately) enable remote parameter setting, real-time graphing, and batch report generation—compatible with Windows-based systems. Firmware updates are distributed through TOKI SANGYO’s authorized service network to maintain measurement traceability and regulatory alignment.

Applications

• Quality control of industrial coatings and inks—verifying shelf-life stability and application viscosity specifications.
• Rheological screening of personal care formulations (shampoos, lotions) to assess pumpability and sensory texture profiles.
• Monitoring polymer solution concentration and degradation during solvent-based manufacturing processes.
• Validation of cleaning agent viscosity in semiconductor wafer processing lines.
• Educational use in materials science laboratories for teaching fundamental viscoelastic behavior and Newtonian/non-Newtonian classification.

FAQ

What spindle configurations are included with the TV-150BH?

Four standardized spindles are supplied as standard equipment, covering low-, medium-, and high-viscosity ranges. Additional spindles (e.g., ultra-low-volume, vane, or extended-length types) are available as optional accessories.
Is temperature control integrated into the instrument?

No—the TV-150BH is designed for ambient-temperature operation only. For temperature-dependent studies, external thermostatic baths or Peltier-controlled sample holders must be used in conjunction with appropriate calibration protocols.
Can the TV-150BH measure yield stress?

It does not provide direct yield stress calculation; however, progressive low-speed torque ramping (0.1–5 rpm) enables empirical yield point estimation via extrapolation of the flow curve’s linear region.
How often does the instrument require calibration verification?

Annual verification using NIST-traceable silicone oil standards is recommended. The torsion-wire/magnetic bearing design minimizes drift, supporting extended calibration intervals under stable environmental conditions.
Is the touchscreen interface compatible with gloved operation?

Yes—the capacitive touchscreen responds reliably to standard laboratory nitrile and latex gloves, supporting safe operation in cleanroom or hygienic processing environments.