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 NDT Technologies Inc
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    Real-Time Material Properties Monitoring Powered By RheoSonic TM Technology
        Ultrasonic Monitoring of Barrel Wear
        Ultrasonic Monitoring of Screw Status
        Polymer Compounding
        Sensors
        Systems
Equipment  NDT Technologies Inc.  Real-Time Material Properties Monitoring Powered By RheoSonic TM Technology  Sensors  

Sensors



Patented technology:

  Ultrasonic probes with Dynisco type fitting
  Integrated miniature high temperature transducer
  Stand-alone high temperature transducer

High Temperature Ultrasonic Clad Buffer Probes (CLAD)

  High signal to noise ratio up to 60 dB in the pulse-echo mode
  Excellent guidance for both longitudinal and shear waves
  Operation up to 900°C
  At the ultrasonic transducer (UT) end - air, water or no cooling required
  1-20MHz operating frequency
  Machinable jacket
  No crosstalk

Same external shape as Dynisco temperature and pressure probes;
Easily installed at the barrel, extruder exit or at the die

Integrated Miniature High Temperature Transducers

  Signal to noise ratio up to 40 dB in the pulse echo mode
  Medium signal strength
  Thermally cycled operation up to 500°C
  No couplant required
  2-30 MHz operating frequency and broad bandwidth
  Curved surface permissible
  Lead-free materials permissible
 

Ultrasonic sensors installed at external surfaces of barrel, mould or die for in-line monitoring of extrusion, micromoulding and injection moulding.

Sensor Locations

Polymer Extrusion and Compounding
(Single or Twin Screw or Internal Mixer)

At the exit

  exit die
  cooling water locations




Along the barrel

  flanges
  between heater bands
  no heater band sections
  thermocouple and pressure probe locations

63 mm Single-Screw Extruder
(FLAG) 

50 mm Twin-Screw Extruder
(Leistritz)

Internal Mixer
(C.W. Brabender) 

30 mm Twin-Screw Extruder
(W&P)

Injection Moulding and Micromoulding

Along the barrel

  between heater bands
  no heater band sections
  thermocouple and pressure probe locations


At the nozzle

At the runner

At the gate

At the mould

  inserts
   external surfaces
  places allowing thin electrical cable


At the nozzle and mould   

150T Co-Injection Mould
(Engel)

At the external surface of the mould 

Micromoulding Machine
(Battenfeld)
Norteks 2000-2009