SYMPATEC MYTOS-TWISTER In-line Dry Powder Laser Diffraction Particle Size Analyzer and Process Control System

Overview

The SYMPATEC MYTOS-TWISTER is a fully integrated in-line laser diffraction particle size analyzer engineered for continuous, real-time monitoring and closed-loop control of dry powder processes in industrial manufacturing environments. Based on the well-established principles of static light scattering—using a stabilized He-Ne laser (632.8 nm) and high-resolution multi-element photodetector array—the system delivers traceable, physics-based particle size distribution (PSD) data directly from the production pipeline. Unlike at-line or off-line alternatives, the MYTOS-TWISTER eliminates sampling delay, environmental contamination, and operator-induced variability by embedding both the TWISTER sampling probe and the RODOS dry dispersion module directly into the process stream. This architecture ensures that every measurement reflects the true state of the material under actual operating conditions—enabling statistically robust process understanding, early deviation detection, and responsive quality intervention.

Key Features

• In-line integration: TWISTER probe mounts directly onto pipe walls (35–660 mm diameter), enabling representative, isokinetic sampling without flow interruption or bypass loops.
• Integrated dry dispersion: Patented RODOS dispersion technology—identical to that used in SYMPATEC’s benchtop HELOS systems—is embedded within the process line to fully de-agglomerate particles prior to optical interrogation.
• High-speed, high-fidelity optics: 2000 Hz scanning frequency combined with auto-alignment and auto-focusing mechanisms ensures consistent optical path integrity across thermal and mechanical transients.
• Dual-theory data processing: Real-time selection between Fraunhofer approximation (for coarse, high-refractive-index particles) and rigorous Mie theory (for fine particles or low-contrast systems), with refractive index input validated per ISO 13320.
• Robust mechanical design: IP65-rated stainless-steel housing; optionally available with ATEX/IECEx-certified explosion-proof (Ex) or GMP-compliant wetted-part configurations for pharmaceutical and food-grade applications.
• Closed-loop readiness: Analog (4–20 mA) and digital (Ethernet/IP, OPC UA) outputs support direct integration with DCS, PLC, or MES platforms for automated feedback control of milling, classification, or blending parameters.

Sample Compatibility & Compliance

The MYTOS-TWISTER is validated for free-flowing, non-cohesive dry powders including catalysts, pigments, toners, metal powders, and pharmaceutical excipients. It accommodates process temperatures up to 150 °C and transient pressure spikes up to 10 bar—making it suitable for pneumatic conveying, fluidized bed processing, and cyclone discharge streams. All optical and mechanical components conform to ISO 13320 (laser diffraction particle sizing), ISO 22412 (dynamic light scattering reference), and ASTM E1282 (sampling of particulate solids). The system architecture supports full compliance with FDA 21 CFR Part 11 when deployed with validated software modules—including electronic signatures, audit trails, and role-based access control—meeting GLP and GMP documentation requirements for regulated industries.

Software & Data Management

Control and analysis are managed via SYMPATEC’s WINDOX 7 platform—a modular, Windows-based application certified for industrial use. WINDOX 7 provides real-time PSD visualization (d10, d50, d90, span, relative width), statistical trend analysis (CUSUM, Shewhart), and automated report generation compliant with ISO/IEC 17025. Raw scattering patterns are stored with full metadata (timestamp, pressure, temperature, dispersion settings), enabling retrospective root-cause analysis. Data export supports CSV, XML, and SQL formats; API interfaces allow synchronization with LIMS and enterprise analytics tools. Optional validation packages include IQ/OQ documentation, performance qualification protocols, and installation support per GAMP 5 guidelines.

Applications

• Real-time monitoring of jet mill output to maintain tight d90 tolerances in battery cathode material production.
• Feedback control of classifier rotor speed in air-swept mills processing ceramic powders.
• Batch release verification for inhalation-grade lactose in dry powder inhaler (DPI) manufacturing.
• Early detection of agglomeration onset in fluid catalytic cracking (FCC) catalyst transfer lines.
• Quality-by-Design (QbD) implementation in continuous manufacturing of solid oral dosage forms.
• Process validation and routine surveillance in pigment synthesis and polymerization reactors.

FAQ

Can the MYTOS-TWISTER be installed on insulated or jacketed piping?
Yes—the TWISTER probe is designed with thermal isolation and optional cooling fins to maintain optical stability under insulated or steam-jacketed conditions.
Does the system require periodic recalibration?
No routine recalibration is required; the built-in auto-alignment and reference beam stabilization ensure long-term optical fidelity. Annual performance verification using NIST-traceable PSL standards is recommended.
How is sample representativeness ensured during high-velocity pneumatic transport?
The TWISTER probe uses a patented dual-orifice isokinetic sampling principle, dynamically matching local gas velocity to prevent particle segregation and bias.
Is remote diagnostics supported?
Yes—via secure VPN-enabled remote access, SYMPATEC engineers can perform health checks, firmware updates, and troubleshooting without onsite intervention.
Can the system operate in hazardous areas classified as Zone 21 or Zone 22?
Ex-certified variants (ATEX II 2D, IECEx Zone 21/22) are available with intrinsically safe electronics and dust-tight dispersion housings.