TOKI SANGYO TV-150BM Rotational Viscometer

Overview

The TOKI SANGYO TV-150BM is a high-stability benchtop rotational viscometer engineered for precise, long-term viscosity measurement of Newtonian and non-Newtonian fluids across an exceptionally wide dynamic range—from low-viscosity solvents (15 mPa·s) to highly structured pastes and gels (up to 6,000,000 mPa·s). It operates on the principle of coaxial cylinder (Couette) flow geometry, where torque generated by fluid resistance to rotation of a cylindrical spindle is measured via a torsion-wire and magnetic bearing suspension system—eliminating mechanical contact between rotating and stationary components. This design ensures zero wear on critical sensing elements, enabling continuous operation without calibration drift or maintenance-induced variability. The instrument is optimized for routine QC laboratories, R&D facilities, and production environments requiring traceable, repeatable rheological data under ambient conditions (0–40 °C, ≤90% RH).

Key Features

• Non-contact torsion-wire + magnetic bearing system: Eliminates shaft friction and mechanical hysteresis; delivers intrinsic long-term stability and metrological integrity over thousands of measurement cycles.
• 3.5-inch full-color LCD touchscreen interface: Provides real-time visualization of viscosity (mPa·s or cP), % torque, upper measurement limit, and rotational speed—configured in SI or CGS units with user-selectable decimal precision.
• Quick-swap spindle mounting: Tool-free, plug-in spindle attachment enables rapid interchange of the four standard spindles (L1–L4), minimizing downtime during multi-sample or multi-range testing protocols.
• High-resolution speed control: 0.1–100.0 rpm range with 0.1 rpm step resolution supports both low-shear characterization (e.g., sedimentation stability) and high-shear process simulation (e.g., pumping, mixing).
• Benchtop modular architecture: Compact main unit (120 × 182 × 199 mm) mounts securely onto a rigid 300 × 310 × 436 mm base with leveling feet—ensuring vibration isolation and alignment stability during extended measurements.

Sample Compatibility & Compliance

The TV-150BM accommodates a broad spectrum of industrial and academic samples—including paints, coatings, adhesives, pharmaceutical suspensions, food emulsions, polymer melts (with optional heated bath), and ceramic slurries—provided they remain stable within ambient temperature and do not chemically attack stainless-steel wetted surfaces. Its measurement methodology conforms to ISO 2555, ASTM D2196, and JIS Z 8803 standards for rotational viscosity determination. While the instrument itself does not embed audit trails or electronic signatures, its analog torque transduction and deterministic firmware architecture support integration into GLP/GMP workflows when paired with validated external data acquisition systems compliant with FDA 21 CFR Part 11 requirements.

Software & Data Management

The TV-150BM operates as a standalone instrument with no mandatory PC dependency. All measurement parameters, results, and instrument status are stored locally in non-volatile memory and can be exported via USB interface (optional cable) in CSV format for post-processing in Excel, MATLAB, or LIMS platforms. Optional PC software (TV-Link Pro) provides real-time graphing, time-sweep profiling, yield stress estimation via controlled-rate ramp tests, and automated report generation with customizable templates. Data export includes timestamp, spindle ID, speed, torque %, viscosity value, and unit system—enabling full traceability per ISO/IEC 17025 documentation requirements.

Applications

• Quality control of batch-to-batch consistency in paint and ink manufacturing
• Rheological screening of topical pharmaceutical formulations (creams, ointments) per USP & Ph. Eur. monographs
• Stability assessment of colloidal dispersions and nanoparticle suspensions
• Process optimization of food products (ketchup, mayonnaise, dairy sauces) under shear-thinning conditions
• Characterization of drilling muds, sealants, and construction adhesives for specification compliance
• Academic research on thixotropic recovery kinetics and temperature-dependent viscosity profiles (when used with external thermal jackets)

FAQ

What spindle configurations are supported by the TV-150BM?
The instrument ships with four standardized L-series spindles (L1–L4), each calibrated for specific sub-ranges within the overall 15–6,000,000 mPa·s span. Custom spindles (e.g., UL, SS, or vane types) are available upon request and require individual calibration certificates.
Is temperature control integrated into the TV-150BM?
No—the base model is designed for ambient-temperature operation only. For temperature-dependent studies, users must integrate externally regulated water baths or Peltier-based sample holders compatible with the cylindrical geometry.
How is calibration verified and maintained?
Factory calibration uses NIST-traceable silicone oil standards. Users perform periodic verification using certified reference oils (e.g., Cannon-Fenske or Brookfield standards); recalibration services are offered by authorized TOKI SANGYO service centers with ISO/IEC 17025 accreditation.
Can the TV-150BM connect to laboratory networks or SCADA systems?
It features RS-232 and USB-B ports for serial communication. Modbus RTU or ASCII protocol support enables integration into PLC-controlled environments when configured via optional communication modules.
What safety certifications does the instrument carry?
The TV-150BM complies with IEC 61010-1 (2010) for electrical safety and EMC conformity per IEC 61326-1:2013, with CE marking valid for use in EU member states and other regions recognizing EN standards.