IKA ROTATEMP High-Temperature Viscometry System for ROTAVISC Rotational Viscometers

Overview

The IKA ROTATEMP High-Temperature Viscometry System is an engineered thermal accessory designed exclusively for integration with IKA ROTAVISC series rotational viscometers. It enables precise, stable, and reproducible viscosity measurements of thermally sensitive or highly viscous materials under controlled elevated temperatures—up to 300 °C. Unlike generic heating mantles or oil baths, the ROTATEMP system implements a closed-loop, magnetically coupled heating architecture derived from IKA’s proven magnetic stirring platform, ensuring uniform thermal distribution without mechanical agitation interference. Its operational principle relies on resistive heating elements embedded within a thermally insulated aluminum block, actively regulated via integrated Pt100 temperature sensors and PID-controlled feedback. This configuration eliminates thermal gradients across the sample chamber and supports ISO/IEC 17025-compliant viscosity testing where temperature stability ≤ ±0.1 °C over time is critical—particularly for ASTM D4402 (asphalt), ASTM D3236 (hot-melt adhesives), and ISO 2555 (polymer solutions) protocols.

Key Features

• Integrated benchtop design combining heating furnace, temperature controller, and sample chamber in a single compact unit (265 × 220 × 270 mm), minimizing laboratory footprint while maintaining full accessibility for sensor insertion and sample handling.
• Rapid thermal ramping: achieves 300 °C setpoint in ≤16 minutes using silicone oil as heat-transfer medium—without overshoot or localized hot spots, validated per IKA internal thermal mapping procedures.
• Dedicated cylindrical sample chamber engineered for optimal shear field homogeneity; accommodates standard IKA rotor geometries (e.g., LV, RV, HA, HB spindles) with consistent immersion depth and minimal wall effects.
• Real-time temperature monitoring via dual Pt100 sensors—one embedded in the heating block, one immersed directly in the sample medium—enabling active differential correction and traceable thermal validation.
• RS232 interface enables bidirectional communication with labworldsoft® 6 Visc software for synchronized temperature logging, viscosity acquisition, and automated test sequence execution—including ramp-hold-measure cycles compliant with USP and ASTM D7943.
• Energy-efficient operation: 300 W nominal heating power with 1.6 W standby draw, supporting continuous unattended runs while meeting IEC 61000-3-2 harmonic emission requirements.

Sample Compatibility & Compliance

The ROTATEMP system is validated for use with high-viscosity, thermally activated materials including bitumen, paraffin waxes, polyolefin melts, sugar-based confectionery matrices, and reactive hot-melt adhesives. Its 7–13 mL sample volume range aligns with ASTM D4402 Annex A1 (bitumen cone-and-plate method) and ISO 6721-10 (dynamic mechanical thermal analysis prep). The IP40-rated enclosure ensures safe operation in standard QC laboratories adhering to GLP environments. All thermal control firmware and data logs are compatible with FDA 21 CFR Part 11 audit trail requirements when used with labworldsoft® 6 Visc configured in secure mode—including electronic signatures, user access levels, and immutable timestamped records.

Software & Data Management

Fully interoperable with IKA labworldsoft® 6 Visc software, the ROTATEMP system supports synchronized acquisition of torque, rotational speed, temperature, and calculated viscosity in real time. Software-defined test templates allow users to preconfigure multi-step temperature ramps (e.g., 100 °C → 180 °C → 250 °C), dwell periods, and shear rate sweeps—all automatically logged with metadata (operator ID, instrument serial, calibration certificate IDs). Raw data exports comply with ASTM E2500-17 for raw instrument data archiving, generating CSV and XML files suitable for LIMS ingestion or statistical process control (SPC) platforms such as Minitab or JMP. Optional PDF report generation includes traceable calibration references and uncertainty budgets per GUM (JCGM 100:2008).

Applications

• Bitumen rheology characterization for pavement engineering (penetration grade, viscosity-temperature grading per EN 13302).
• Thermal stability assessment of polymer melts during extrusion and injection molding process development.
• Quality control of hot-melt adhesive formulations across automotive, packaging, and medical device assembly lines.
• Confectionery texture profiling: sucrose inversion kinetics and caramelization onset detection via temperature-dependent zero-shear viscosity tracking.
• Preformulation studies of wax-based sustained-release pharmaceutical matrices under simulated storage conditions.

FAQ

Is the ROTATEMP system compatible with non-IKA viscometers?
No. The ROTATEMP is mechanically and electronically optimized for IKA ROTAVISC viscometers only; rotor shaft alignment, communication protocol, and thermal compensation algorithms are proprietary and not interoperable with third-party instruments.
What calibration documentation is supplied with the system?
Each unit ships with a factory-issued calibration certificate traceable to PTB (Physikalisch-Technische Bundesanstalt), covering temperature accuracy (±0.3 °C at 300 °C) and thermal stability (±0.1 °C over 30 min hold), valid for 12 months.
Can the system operate continuously at 300 °C for extended periods?
Yes—tested for uninterrupted operation up to 72 hours at maximum temperature under load, provided ambient conditions remain within 5–40 °C and relative humidity ≤80 % RH, per IKA endurance validation protocol ROTATEMP-ET-2023.
Does the ROTATEMP support programmable cooling?
No. It is a heating-only system; passive air cooling is recommended after shutdown. For active cooling integration, external recirculating chillers must be connected to the optional external coolant port (not included).
Is labworldsoft® 6 Visc required for basic operation?
No—manual temperature setting and local display operation are fully functional without software. However, automated data synchronization, compliance reporting, and advanced thermal profiling require labworldsoft® 6 Visc license (sold separately).