Testing Unit

1 Test method Constant-pressure extrusion system using weights.
2 Type of tests Constant temperature test and constant heating-rate test.
3 Extruding pressure range CFT-500D 0.4903-49.03 MPa (5-500 kgf/cm2). 

0.4903 MPa (5 kgf/cm2) step selection
CFT-100D 0.098-9.807 MPa (1-100 kgf/cm2)

0.098 MPa (1 kgf/cm2) step selection
Pressure precision Better than ±1% of the set value
4 Measuring range CFT-500D 8 x 10-1 (*1)-1 x 106 (*2) Pa • s
CFT-100D 1.6 x 10-1 (*1)-2 x 105 (*2) Pa • s

(*1) for 0.5 ID x 1.0 mm length die

(*2) for 1.0 ID x 1.0 mm length die
5 Heating method Electric, 500W
6 Test temperature Range (Ambient + 20 °C) -400°C 

Heat sensor 100Ω platinum resistor 

Measuring precision error of heat sensor + (±0.3 °C) 

Control precision ±0.2°C in stable state 

Heating rate 0.5-6.0°C/min (0.1°C step).

(For constant heating-rate tests) 

7 Piston stroke Effective stroke 15mm 

Stroke detector Linear potentiometer 

Measuring precision ±0.5% (for 15 mm stroke) 

Resolution 0.01mm 

8 Maximum sample size 1.5cm3
9 Piston diameter 11.282mm (1cm2 in cross sectional area)
10 Cylinder diameter 11.329mm
11 Standard dies (interchangeable) 0.5 ID x 1.0mm length 

1.0 ID x 1.0mm length 

1.0 ID x 2.0mm length 

1.0 ID x 10.0mm length
12 Operational requirements Power source 100VAC, 50/60Hz, 7A max. 

Pneumatic source About 0.5 MPa (4 kgf/cm2), 15NL/run 

Temperature 10-35°C

(below 29°C in wet bulb reading) 

Humidity 30-80% (No condensation) 

13 Approximate dimensions and weight Rheometer main body 840W x 650D x 1,530H mm, 200kg 

Attachments 60kg 


Control Unit

1 CPU Single chip microcomputer, 16 bit
2 Memory size 512 Kbyte ROM and 320 Kbyte RAM
3 Display 5.7* monochromatic LCD, touch panel type
4 Personal computer Interface RS-232C
5 Clock incorporated -
  Stand-alone System Specifications Personal Computer System Specifications
1 Parameters Selection of constant temperature method (hereafter called constant) or constant heating-rate method (hereafter called heating-rate), piston cross sectional area, piston drive condition, testing load, preheating period, sample name, sample number, test temperature (Constant), number of test repeats (Constant), density, calculation start/end positions (constant), test start temperature (Heating-rate), test final temperature (Heating-rate), heating rate (Heating-rate), interval of flow rate measurement(Heating-rate), die dimensions (orifice and length), selection of flow rate calculation methods (limiting method or automatic method), full scale time, full scale stroke
2 Data processing items. Shear stress t (Pa), flow rate Q (cm3/s), shear rate g (s-1), viscosity h (Pa • s), melt flow rate (MFR)(*), softtening temperature (Constant), flow beginning temperature (Heating-rate), 1/2 method and offset temperature method (Heating-rate)
3 Graph generation Stroke-time curve (Constant), stroke-temperature curve (Heating-rate)
  Viscosity-shear rate curve (Constant)

Shear stress-shear rate curve (Constant)

Viscosity-temperature curve (Constant)

Shear rate-temperature curve (Constant)

Viscosity-time curve (Constant)

Shear rate-time curve (Constant)

Viscosity-temperature curve (Heating-rate)

Shear rate-temperature curve (Heating-rate)

Overlay of up to 10 curves Zooming display (Constant and Heating-rate)

Viscosity correction by the Bagley plot method 

Shear sensitivity N
(*) The cylinder dimensions of CFT-500D/100D system is different from that of the melt indexer based on ASTM/JIS.

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