Brookfield DV2T Touchscreen Viscometer

Overview

The Brookfield DV2T Touchscreen Viscometer is a precision-engineered rotational viscometer designed for routine viscosity measurement in quality control laboratories, R&D facilities, and production environments. It operates on the principle of coaxial cylinder (Couette) flow, where torque required to rotate a spindle immersed in a sample at a defined speed is measured and converted into dynamic viscosity (mPa·s or cP) using calibrated spring-based sensing mechanics. The instrument employs a microprocessor-controlled motor and high-resolution encoder to deliver stable rotational speeds across its full speed range (0.3–100 rpm), enabling reliable characterization of Newtonian and mildly non-Newtonian fluids under controlled shear conditions. Its modular spindle architecture—supporting LV, RV, HA, and HB series spindles—allows seamless adaptation to sample viscosity spanning three orders of magnitude, from low-viscosity solvents to semi-solid pastes.

Key Features

• 5-inch full-color TFT touchscreen interface with intuitive icon-driven navigation and multi-language support (English, Spanish, French, German, Chinese, Japanese)
• Real-time display of viscosity (cP/mPa·s), temperature (°C/°F), shear rate/stress (calculated), % torque, selected spindle/speed, and active test stage
• FDA 21 CFR Part 11–compliant security framework: role-based user permissions, password protection, audit trail logging, and electronic signature support
• Built-in functionality including timed measurements, data averaging, programmable QC pass/fail limits with audible/visual alerts, and customizable spindle/speed libraries
• Auto-ranging capability that dynamically identifies maximum measurable viscosity for the current spindle–speed combination
• Integrated Pt100 RTD temperature probe with ±0.1 °C accuracy; temperature readings synchronized and timestamped with viscosity data
• USB-B port enabling direct connection to Windows PCs for remote control, real-time data streaming, and automated report generation via included PG Flash software
• Mechanical design features precision ball-bearing suspension, quick-connect spindle coupling (standard on DV2T EXTRA), and front-mounted bubble level for rapid instrument leveling

Sample Compatibility & Compliance

The DV2T accommodates a broad spectrum of liquid and semi-liquid samples through interchangeable spindles: LV-series for low-viscosity fluids (e.g., mineral oils, inks, thin coatings); RV-series for medium-viscosity materials (e.g., salad dressings, latex paints, cosmetic emulsions); HA-series for high-viscosity systems (e.g., gels, chocolate masses, epoxy prepolymers); and HB-series for very high-viscosity substances (e.g., asphalt binders, caulking compounds, molasses). All measurements adhere to ASTM D2196, ISO 2555, and USP <911> guidelines when configured with appropriate geometry and test protocols. The system supports GLP/GMP documentation workflows through traceable calibration records, NIST-traceable standard fluid verification (included with each unit), and secure, version-controlled method storage.

Software & Data Management

PG Flash software—supplied standard—enables method creation, instrument control, live graphing, and export to CSV, Excel, or PDF. For advanced rheological analysis, the optional RheoCalcT software (bundled with DV2T EXTRA) provides yield stress estimation, flow curve modeling (Power Law, Bingham, Casson), time-dependent thixotropy recovery analysis, and statistical process control (SPC) charting. All data files include embedded metadata: operator ID, timestamp, environmental temperature, spindle ID, speed, torque, and calibration certificate reference. Audit trails are immutable and exportable for regulatory review. Data integrity is maintained via checksum validation and automatic backup to external USB drives.

Applications

The DV2T serves critical roles across industries requiring repeatable, standards-aligned viscosity assessment: formulation development and batch release testing in pharmaceuticals (suspensions, ointments, syrups); raw material acceptance in paints and coatings; consistency monitoring in food processing (ketchup, sauces, dairy products); QC of lubricants and hydraulic fluids in automotive manufacturing; and R&D screening of polymer melts and adhesives. Its robust mechanical architecture and thermal stability make it suitable for continuous operation in ambient lab environments (15–30 °C) without active cooling.

FAQ

What spindle types are compatible with the DV2T?
LV, RV, HA, and HB series spindles are fully supported. Each is optimized for a specific viscosity range and geometry-defined shear field.
Does the DV2T meet FDA 21 CFR Part 11 requirements out of the box?
Yes—the instrument includes configurable user access levels, electronic signature prompts, and tamper-evident audit logs required for regulated environments.
Can I perform temperature-controlled measurements?
The integrated RTD probe provides accurate sample temperature monitoring; for active temperature control, pair with Brookfield TC-550 or similar circulating bath systems.
Is calibration traceable to NIST standards?
Each unit ships with verification using NIST-traceable standard fluids (50, 500, and 5000 cP), and calibration certificates are provided with uncertainty budgets.
What is the difference between PG Flash and RheoCalcT software?
PG Flash handles basic method execution and reporting; RheoCalcT adds mathematical modeling, yield stress calculation, and advanced statistical analysis modules.