The use of plastic rotors in GEA Nu-Con demountable rotary valves has proved to be a sound solution for eliminating rotary valve scraping, which is a possibility with full stainless steel construction.

However, plastic rotors are not suitable for all duties. For example, abrasive or high temperature products require stainless steel rotors to be used.

For those applications that require abrasive or high temperatures (and with close tolerances), GEA Nu-Con has developed a special monitoring device to manage the potential risk of rotor scraping.

Generation 2 has specifically been designed also to meet the requirements of CIP (Clean In Place) with a setting allowance for dry out of the equipment, the re-designed RDS unit is more robust and has an ATEX complience option. 

The complete Generation 2 assembly uses longer life bearings in the Rotary Valve unit, and a solid stainless steel rotor that means the rotor can be serviced. Retro fitting existing Generation1 RDS and or Rotary Valves without RDS is an available option.

When fitted, this device continuously monitors the electrical isolation between the rotor and the valve housing, giving an immediate warning of any rotor contact, or even the presence of a metal shaving lodging between rotor and body.

 

New Features:

  • Adjustable Sensitivity via control module interface.
  • CIP Compatibility
  • PC interface Diagnostic System
  • Modified Probe - Robust and re-designed
  • Solid Stainless Steel Rotor

Features and Options:

  • Special monitoring isolated switch amplifier for remote mounting.
  • Instant output signal from any metal contact.
  • Fail-safe monitoring with fault output signal.
  • Confirms valve rotor is running free after reassembly and commissioning online.
  • Adjustable sensitivity via control module.
  • CIP Compatible.
  • Can be used in ATEX applications with suitable options via an ATEX compliant barrier - Contact GEA Nu-Con for further details.
  • 24V DC
  • Dual setpoints
  • Data recording to preserve history
  • Retrofitting of existing Rotary Valves to RDS specification option is available.

Applications:

  • Monitoring  rotor to housing contact.
  • Rotor Detection System (R.D.S) option is available on all GEA Nu-Con demountable rotary valves - including the Easy Slide Rotor support option.
  • Use for warning or process shutdown when rotor contacts the valve body.
  • Use with close tolerance stainless steel rotor applications
  • Use in high temperatures applications, to detect any rotor contact with the valve housing
  • Use with abrasive products.
  • Use in the feeding to filling lines
  • Use at the bottom of cyclones

Control Module:

  • Controls RDS System
  • 24V DC, DIN rail mounted
  • Includes ATEX compliant barrier
  • Modbus / RS485 network communication
  • LED status indication
  • Separate contact / system fault outputs
  • CIP mode

 

 

 

Interface Adaptor:

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  • PC Interface for system setup and diagnostics
  • Modbus / RS485 network communication
  • USB PC connection
  • Adjusts material / CIP conductivity setpoints
  • Adjusts on / off / debounce / latch setpoints
  • Logs operating data
  • Offline testing and diagnostics

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