Conmark Systems Inc.
Continuous Performance Improvements for the Pulp & Paper Industry        

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Brown Stock Washing BLOX Causticizing Continuous Digester Batch Digester Dissolving Tank Lime Kiln Dry End Stock Prep Variable Reduction Wet End Process Mining
Agitators Actuators Chip Moisture CD Control Consistency Diff. Pressure Edge Guide Oil Flow PASVE Isolation valve Pressure Sample Valves Seal Water Flow Solid Content Turbidity Web Break Detector
Agitators Actuators Basis Weight CD Control Charge Chip Moisture Consistency Desktop Kappa Desktop Liquor Diff. Pressure Edge Guide Event Analyzer Liquor Analyzer Lime Kiln Microwave Basis Weight Oil Flow Paper Moisture PASVE Isolation valve Pressure ProcessMiner Property Predictor Portable Video Sample Valves Seal Water Flow Solid Content Turbidity Web Break Detector Wet End Scanner
CD Control Stock Prep Dry End Wet End
Brown Stock Washing BLOX Causticizing Continuous Digester Batch Digester Dissolving Tank Lime Kiln
Microwave Basis Weight Impregnated NonWoven

 

Non-Radioactive Microwave based online Basis Weight and Moisture in one Sensor

Scienta has developed a new revolutionary non-radioactive measurement technology for the measurement of Basis Weight and Moisture for the web based production lines like paper machines and coating lines. Both measurements are applied in the same sensor. Sensor is manufactured around enhanced patented Microwave technology and highly sophisticated software algorithm with digitally controlled microwave frequency controller. Due to new microwave technology sensor provides ultra wide measurement range for Basis Weight and Moisture. Sensor has built-in compensation for X-Y-Z movement. The Microwave sensor 7250S is designed and solidly built to withstand heat, dust, resin, etc. and relies on 50 years of measurement experience.

Sensor can be installed either double sided or single sided with different types of scanners including C-Frame, Mobile C-Frame, Single Sided Scanner, O-Frame and Fixed Point sensor. Sensor replacement kits are also available for other manufacturers' scanners.

Measurement data in the QCS scanning sensors is processed with high performance 32-bit RISC processors to get the performance needed to do real-time floating-point calculations in the sensor board. Furthermore, the whole electronic part of the sensor is fitted on a single PCB board, which is embedded into the sensor mechanical structure. Component count as well as the number of spare parts is minimized.

Non-Radioactive Microwave based online Basis Weight and Moisture in one sensor

Basis Weight Measurement
The Weight measurement is based on the change in the loss tangent value and the frequency shift, which can be analyzed with highly sophisticated software algorithm.

Microwave Signal Processing

Moisture Measurement
Moisture is detected as a shift in the Microwave cavity resonance frequency. A reference frequency, which is not sensitive to water, enables a measurement which is independent of temperature etc.

Microwave Signal Processing

Scanner options
C-Frame, Mobile C-Frame, Single Sided Scanner, O-Frame and Fixed Point sensor.

C Frame Mobile C-FrameSingle Sided ScannerO FrameFix Point Sensor

Scienta Concept is based on Fieldbus technology
Scienta has pioneered the use of processor controlled measuring heads capable of real-time linearization of the measurement signal. Thanks to Fieldbus or Modbus connection, the output signal can be easily and accurately interfaced to all sorts of computers, DCS or PLC equipment.
The Fieldbus connection enables monitoring of diagnostic data available inside the measuring head and controlling of the head in manners not possible with analog systems.
The sensor electronics are built into the receiver body making it a highly compact unit. Temperature compensation as well as the condition monitoring are part of the extensive functionality of the Scienta developed sensors

Control strategies - stabilizing the process
Scienta offers basic machine control strategies including Decoupled Weight Control, Dry stock Flow Control and Decoupled Moisture Control. Further controls such as Consistency control and CD controls may be implemented using actuators and sensors as needed. The basic control strategy is a Machine Direction (MD) type of control but Scienta can provide also many profile control applications. Each machine and process type needs to be evaluated for implementing the best control strategy.

Wet End Moisture Scanner for Paper and Board Machines

 

 

 

Reports
Process variable reports include long term trends with Reel, Shift and Day reports in standard format. Connection to existing databases has been done using OPC interfaces and tailored to each customer’s specific needs. The reports may be easily changed and adapted to the clients’ data gathering needs. Reports may be printed or stored in various standard forms such as Excel and PDF.

Manufacturer: Scienta Oy; Jorvas, Finland; http://www.scienta.fi

Scanner Technical Specifications:

Measurement Range

  • Mass Weight: 20 – 5000 g/m²
  • Moisture content range: 2 – 90 %

Features

  • Single sided construction
  • Contacting sensor made of highly durable material
  • Insensitive to the properties of the pulp
  • Double sided construction, measuring gap is 13 mm
  • Intelligent sensor with own built-in micro processors
  • Unique multi antenna sensor compensates for movement during scanning

Benefits

  • Universal measurement; Ultra wide measuring range
  • Scanning and single point measurement available
  • NO radioactive source is required
  • Easy and convenient to install and operate
  • Full range of scanners available - Easy calibration and setup
  • Replacement Kit available for most commercial Scanners

Microwave Sensor in Scanner

Microwave Sensor in Scanner








 

 

Microwave Sensor in Scanner

 

 

 

 

 

Microwave Sensor in Scanner