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Alpha Technologies® RPA 2000™
Alpha Technolgies® RPA 2000™ Alpha Technolgies® RPA 2000™
CCSi has acquired a well maintained and very gently used Alpha Technologies® RPA 2000™, which is now available for purchase. This fine instrument has been performance tested, calibrated to the manufacturer's recommendations, ISO/ASTM specifications and our rigorous in-house requirements.
The Alpha Technologies® RPA 2000™ (Rubber Process Analyzer) is a versatile rheological test instrument, designed to measure the properties of rubber compounds throughout the various stages of processing... from pre-cure to post-cure.
The versatility and utility of the RPA 2000™ is exemplified by its ability to perform a wide range of analytical and performance testing, including:
  1. component materials characterization;
  2. raw material testing;
  3. master batch characterization;
  4. end compound testing;
  5. cured compound testing
Additionally, the RPA 2000™ ascertains important viscoelastic properties providing data on critical parameters such as:
  1. processability;
  2. state of cure characterizations;
  3. final state of cure.
The sensitivity of the RPA 2000™ detects small changes in levels of ingredients and variations in compound properties. The range and flexibility of the RPA allows comparison to historical laboratory tests, reducing testing complexity, time and cost.
Alpha Technologies® RPA 2000™ : Features
Major features of the RPA 2000 include variable test parameters:
  1. temperature;
  2. oscillation frequency;
  3. Strain/angle of oscillation;
  4. time.
 A 3D rendering of the RPA drive/rotor system
The sample is placed into a sealed test cavity and directly heated by two biconical dies which provide a quick and accurate thermal response. The starting temperature for the test is set automatically and controlled by heating or forced air cooling. The temperature can be varied during a test, or maintained at a constant value to within ± 0.3º C, between 40º and 230º C.
The direct drive servo motor system can vary the oscillation angle (0.05 to 90 degrees of arc) and frequency (0.03 to 33 Hz) over a wide range of conditions.
The torque is transmitted from the oscillating lower die to a torque transducer in the upper die. The measurements acquired by the torque transducer are transmitted to the computer, where the selected sample properties are calculated, displayed and stored the for immediate or future analysis.
Variable strain is applied through the oscillating lower die. The strain angle can be varied between 0.05º and 90º in increments of 0.01º. Torque, modulus and viscosity are measured at a preprogrammed frequency and temperature
The oscillation frequency of the applied strain can be varied precisely between 0.03 and 33Hz. Torque, modulus and viscosity are measured at a preprogrammed strain and temperature.
Alpha Technologies® RPA 2000™ : General Specifications
  1. Complies with
    •ASTM D6204,
    •ASTM D5289,
    •ASTM D6601;
  2. Patents:
    • 5,079,956 – Multi angle and high strain;
    • 4,552,025 – Variable frequency and temperature;
    • 5,481,903 – Temperature ramping;
    • 4,794,788 – Calculation of Data by Fourier.
  3. Temperature:
    • Computer programmed; 40º C to 230º C;
    • Rate of 1º C per second maximum with 25º C air.
  4. Oscillation Strain:
    • ± 0.05 to 90 degrees of arc.
  1. Oscillation Frequency:
    • 0.03 to 33 Hz (2 to 2000 CPM) in 0.02 Hz increments.
  1. Frequency/Strain Combinations:
    • Limited to a maximum product of CPM xº of arc = 2,047 (Maximum shear rate = 30s-1, correlates to process up to 200s-1.
  1. Standard Torque Range:
    • 10-2 to 225 dN.m (10-2 to 200 lbf.in)
  1. Specimen Volume:
    • ~ 4.5 cm³.
  1. Units of Measure:
    • Torque: S’,S’’,S* (dN.m, lbf.in, kgf.cm);
    • Shear modulus: G’, G’’, G* (Pa, dynes/cm2, psi) Temp: ºC, ºF;
    • Frequency: cpm, Hz, rad/s; strain ºof arc, %
    • Optional calculated results: n, n’’, n*, j’, j’’, j*, tan d.
  1. Subtest Types:
    • Frequency, Strain and Temperature sweeps;
    • Cure Tests, Stress Relaxation, Variable Temperature Analysis, Timed Tests and Matrix.
  1. Electrical Requirements:
    • 100/110/120/130 ± 10% VAC, 50/60 ± 3 Hz, 15 amp, single phase;
    • 200/220/240/260 ± 10% VAC, 50/60 ± 3 Hz, 7.5 amp single phase.
    • Variation from electrical requirements may adversely affect performance and desired results.
  1. Pneumatic Requirements:
    • 80 psi (5.6 kg/cm2, 550 kPa, 5.52 bar) minimum;
    • Variation from pnuematic requirements may adversely affect performance and desired results.
  1. Dimensions (instrument only, additional area will be required for the computer and printer):
    • Width 680 mm (27 inches), Height 1320 mm (52 inches), Depth 760 mm (20 inches).
  1. Weight (net weight, instrument only):
    • 197 kg (430 lb.).
Alpha Technologies RPA2000 Phot Gallery (Click on item for a larger image)
RPA Front View
RPA Front View		 RPA Front View
RPA Front View		 Steelastic Line Image 3
Image 3		 Steelastic Line Image 4
Image 4
Please contact CCSi for further information to discuss how this fine analytical instrument may best serve your processing requirements.
Copyright © 2009 CCSi, Inc. • All Rights Reserved • Published May, 2009
Corporate Consulting, Service & Instruments, Incorporated
University Park • 221 Beaver Street • Akron, Ohio 44304 USA
Telephone: 800.742.8535 / 330.376.3600 • Facsimile: 800.229.9329 / 330.376.8500
• www.ccsi-inc.com • www.orecozone.net • www.ccscalibration.com • www.ccsequipment.net •www.ccscalibration.com • www.ccsequipment.net •