FT5 Ribbon-Type / Single-Conical Drum Mixer by Armfield

Overview

The Armfield FT5 is a benchtop-scale, hygienically engineered mixing system specifically developed for research, development, and quality assurance applications in food science laboratories and pilot-scale food processing facilities. It integrates two distinct mixing configurations—ribbon-type and single-conical drum—within a single modular platform, enabling comparative evaluation of mixing mechanisms across diverse powder and semi-solid formulations. The ribbon mixer operates on the principle of axial and radial convective transport: dual helical ribbons mounted on a central shaft generate simultaneous inward-outward and top-bottom material movement, ensuring rapid homogenization of dry blends, doughs, and viscous pastes. The interchangeable single-conical drum attachment functions via gravitational tumbling and gentle shear, ideal for fragile particulates, coated granules, or moisture-sensitive ingredients where minimal particle attrition is critical. Both configurations utilize a fully enclosed, smooth-welded 316 stainless steel vessel with polished internal surfaces (Ra ≤ 0.8 µm), meeting EHEDG Guideline EL for cleanability and microbial control.

Key Features

• Benchtop footprint (W × D × H: 620 × 510 × 740 mm) optimized for controlled laboratory environments without requiring floor anchoring
• Modular design supporting rapid tool-free exchange between ribbon agitator assembly and conical drum unit in under 90 seconds
• Digital speed controller with 0–120 rpm range (±1 rpm resolution) and real-time RPM feedback via LED display
• Variable torque monitoring capability (optional add-on) for empirical assessment of power consumption vs. formulation rheology
• Interlocked safety guard with IP54-rated enclosure; emergency stop button compliant with IEC 60204-1
• Detachable discharge chute with silicone-sealed gate valve for dust-free, quantitative sample recovery

Sample Compatibility & Compliance

The FT5 accommodates batch volumes from 0.5 L to 5.0 L (depending on density and flow characteristics), supporting dry powders (e.g., flour blends, starches, dairy powders), semi-moist doughs (up to 75% hydration), and low-viscosity slurries (< 5000 mPa·s at 25°C). All wetted parts conform to FDA 21 CFR §177.2400 for repeated food contact. Surface finish validation documentation (including roughness reports and weld inspection certificates) is supplied with each unit. The system meets fundamental hygiene requirements outlined in ISO 22000:2018 Clause 8.2.2 (Prerequisite Programs) and supports GLP-compliant test protocols when used with Armfield’s optional data logging interface.

Software & Data Management

While the base FT5 operates via standalone analog/digital controls, it is compatible with Armfield’s optional FT5-DAQ module—a USB-connected data acquisition unit that records speed, elapsed time, motor current draw, and optional temperature (via PT100 probe) at user-defined intervals (1–60 s). Exported CSV files are structured for direct import into statistical analysis platforms (e.g., JMP, Minitab) or LIMS systems. Audit trail functionality—including operator ID, timestamp, configuration selection (ribbon/drum), and parameter setpoints—is enabled under firmware v2.3+, satisfying traceability requirements aligned with FDA 21 CFR Part 11 Annex 11 principles for electronic records.

Applications

• Farinograph-equivalent dough development studies: quantifying water absorption, dough stability, and mixing tolerance indices through torque-vs.-time profiling
• Blend uniformity testing per ASTM D5363–17 (Standard Practice for Sampling and Testing Dry Powder Blends)
• Evaluation of anti-caking agent efficacy in powdered dairy or spice formulations
• Scale-down validation of industrial ribbon mixer performance using dimensionless number correlation (e.g., Reynolds number, Froude number)
• Process mapping of shear-sensitive ingredient incorporation (e.g., probiotics, enzymes, volatile flavors) in conical drum mode
• Teaching modules in food engineering curricula covering mixing mechanics, residence time distribution, and scale-up fundamentals

FAQ

Can the FT5 be used for regulatory submission studies?
Yes—when operated with documented SOPs, calibrated torque sensors (optional), and full audit trail enabled, data generated meets evidentiary standards for pre-submission dossier support under EFSA and FDA guidance.
Is cleaning validation support available?
Armfield provides a Cleaning Validation Kit (FT5-CVK) including swab sampling templates, residue detection protocols, and surface recovery efficiency test procedures aligned with PDA TR29.
Does the system support automated recipe recall?
Not natively; however, the FT5-DAQ module allows saving configuration presets as named CSV templates for repeatable experimental conditions.
What maintenance intervals are recommended?
Lubrication of gearmotor bearings every 1,000 operating hours; annual verification of speed sensor calibration and guard interlock function per Armfield Maintenance Schedule MS-FT5 Rev. 3.
Can third-party sensors be integrated?
Yes—the FT5-DAQ module features four configurable analog inputs (0–10 V / 4–20 mA), permitting integration of external pH, humidity, or NIR probes with appropriate signal conditioning.