TOKI SANGYO TV-200E Programmable Touchscreen Cone-and-Plate Viscometer/Rheometer

Overview

The TOKI SANGYO TV-200E is a benchtop cone-and-plate rotational viscometer engineered for high-precision, programmable rheological characterization of low-to-high viscosity Newtonian and non-Newtonian fluids under controlled shear conditions. Utilizing the fundamental principle of Couette flow between a precisely angled conical rotor and a flat, temperature-stabilized plate, the instrument delivers reproducible shear rate control across a wide dynamic range—enabling accurate determination of apparent viscosity, yield stress (via flow curve analysis), and shear-thinning/thickening behavior. Designed for routine QC laboratories and R&D facilities requiring ISO/IEC 17025-compliant viscosity measurement, the TV-200E integrates real-time torque sensing, digital motor control, and closed-loop speed regulation to ensure metrological traceability and inter-laboratory comparability.

Key Features

• Full-color capacitive touchscreen interface with intuitive icon-driven programming—supports multi-step shear rate ramps, dwell times, and automatic data capture without PC dependency.
• Cone-and-plate geometry (standard 1° or 2° cones available) ensures uniform shear field and minimal sample volume requirement (typically 0.5–1.0 mL), minimizing edge effects and air entrapment artifacts.
• Motor-driven precision speed control from 0.01 to 1,000 rpm, enabling shear rates from ~0.1 to ~10,000 s⁻¹ depending on cone angle and radius—calibrated per ASTM D2196 and ISO 3219.
• Integrated Peltier-controlled plate temperature module (optional upgrade) maintains ±0.1 °C stability over 10–60 °C, supporting temperature-dependent viscosity profiling per ASTM D445 and ISO 2555.
• Modular transducer architecture allows seamless interchange of cone-and-plate sensor sets—including low-torque micro-cones (for sub-mPa·s fluids) and high-torque extended-range units—extending effective viscosity coverage by up to 60× beyond base configuration.
• Benchtop fixed-frame design with rigid aluminum alloy housing ensures mechanical stability during long-duration measurements and minimizes vibration-induced noise in torque signal acquisition.

Sample Compatibility & Compliance

The TV-200E accommodates a broad spectrum of liquid and semi-fluid samples: polymer melts and solutions (e.g., PVC plastisols, acrylic resins), pharmaceutical suspensions and gels (including USP compliant formulations), food emulsions (mayonnaise, dairy creams), coatings, inks, and lubricants. All standard cone-and-plate geometries comply with ISO 3219 Annex A for geometric validation and are supplied with NIST-traceable calibration certificates. The system supports GLP/GMP workflows via user-accessible audit trail logging (timestamped operator ID, method version, calibration status), and meets essential requirements for FDA 21 CFR Part 11 compliance when deployed with validated software extensions.

Software & Data Management

Onboard firmware enables full method storage (up to 100 protocols), real-time graphing of viscosity vs. shear rate/time, and CSV export via USB flash drive. Optional PC-based TOKI RheoView™ software provides advanced analysis: Carreau-Yasuda and Herschel-Bulkley model fitting, thixotropy loop quantification (area under curve, structural recovery kinetics), and automated report generation with embedded metadata (sample ID, operator, instrument serial number, calibration date). Data files retain native timestamping and are structured for compatibility with LIMS integration via standard ODBC drivers.

Applications

• Quality control of industrial adhesives and sealants—verifying batch-to-batch consistency in yield point and zero-shear viscosity.
• Rheological screening of injectable biopharmaceutical formulations to assess syringeability and stability under physiological shear profiles.
• Development of shear-thinning architectural coatings—optimizing sag resistance and brushability through controlled ramp-and-hold testing.
• Characterization of edible oils and margarines across temperature sweeps to predict mouthfeel and cold-temperature crystallization behavior.
• Validation of cleaning-in-place (CIP) fluid rheology for hygienic process design in food and beverage manufacturing.

FAQ

What cone angles are supported with the TV-200E, and how do they affect measurement sensitivity?
Standard configurations include 1° and 2° cones; 1° cones provide higher shear rate resolution at low speeds and are preferred for low-viscosity Newtonian fluids, while 2° cones offer greater torque output for high-viscosity or yield-stress materials.
Is temperature control integrated, or is it an add-on option?
A Peltier-heated/cooled plate module is available as a factory-installed option—enabling precise isothermal and temperature-ramp experiments without external circulators.
Can the TV-200E perform yield stress determination?
Yes—via controlled shear rate ramping or controlled shear stress stepping, followed by numerical derivation of the flow curve inflection point using Herschel-Bulkley regression in RheoView™ software.
Does the instrument support ASTM or ISO standard test methods out of the box?
Preloaded test templates align with ASTM D2196 (paints), ISO 2555 (resins), and ISO 3219 (general viscometry); full compliance requires proper calibration, environmental control, and documented SOP execution.
How is calibration verified and maintained?
Factory calibration uses certified silicone oil standards traceable to NMIJ/AIST; users perform periodic verification using supplied reference oils and generate calibration logs stored internally and exportable for audit review.