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FT4 Powder Rheometer

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A universal powder flow tester – dynamic, shear and bulk measurement of powder behavior, with fully automated test programs and data analysis

 

  • Four categories of methodologies: Bulk (density, compressibility, permeability), Dynamic flow (basic flowability, aeration, consolidation, flow rate, specific energy), Shear (shear cell, wall friction – per ASTM D7891) and Process (segregation, attrition, caking, electrostatics, moisture, agglomeration)
  • Patented dynamic methodology – a precision blade rotates and simultaneously moves through the powder; the torque and force are measured, and their composite (Flow Energy) represents the total resistance to flow
  • Automatic conditioning step before each measurement – consistent sample preparation regardless of prior stress history, for high repeatability independent of operator and instrument
  • Sample size range 10 – 160 mL (a 1 mL shear cell is additionally available for very small samples)
FT4 Powder Rheometer

Details

  • Additional accessories: Aeration Control Unit (controlled aeration/permeability), Shear Cell and Wall Friction modules (ASTM D7891), vented piston for axial consolidation under controlled stress, a range of vessel and blade sizes
  • Software compliant with CFR21 Part 11 guidelines – wizard interface for easy guidance through the analysis, site license enables processing and reporting outside the laboratory as well
  • Typical applications: batteries (lithium-ion), additive manufacturing (3D printing), coatings, chemical industry, toners, cosmetics, ceramics, food, pharmaceuticals
  • Compliant with ASTM D7891

 

Purpose Laboratory instrument for measuring the rheological properties of powders, pastes and semi-solid materials. Compliant with EN61000-3-2:2001, EN61000-3-3:1995, EN61326:1997+A2:2001, ASTM D7891
Force ±50 N maximum, resolution 0.0001 N
Torque ±900 mNm maximum, resolution 0.002 mNm
Vertical travel 185 mm
Rotor speed max. 120 rpm
Axial speed max. 30 mm/s
Residual air energy < 2 mJ
Working area 316 stainless steel
Sample-contact parts 316 stainless steel, borosilicate glass, Delrin and Peek plastic
Dimensions 306 × 306 × 760 mm
Weight 22 kg (net)
Power 90 – 264 VAC, 47 – 63 Hz; current 1.6 A at 120 VAC / 0.8 A at 230 VAC; min. protection threshold 30 mA
Humidity 20 – 80% (non-condensing)
Temperature, operating 10 – 40 °C
Temperature, storage 0 – 50 °C
Vessels precision borosilicate tubes; standard sizes 25 mm × 10/25/35 mL, 50 mm × 85/160/260 mL, 62 mm × 137/240/400 mL (split and standard versions)
Blades hardened stainless steel; standard sizes 23.5 mm × 6 mm, 48.0 mm × 10 mm, 60.0 mm × 10 mm

Source: micromeritics.com/powder-flow and micromeritics.com/products/ft4-powder-rheometer (specifications, methodologies) and the brochure “Measuring and understanding the flow properties of powders with the FT4 Powder Rheometer” (Freeman Technology Ltd, 2015, internal archive – an older edition predating the page’s rebranding, used only for additional description of methodologies/accessories, consistent in content with the current web specification). The FT4 Powder Rheometer is manufactured by Freeman Technology Ltd (UK), a company within the Micromeritics/Malvern Panalytical group – the only instrument listed under Micromeritics’ “Powder flow” category.

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