Pulp density control system flow

  Introduction to System
   The sensor works with shear force and features highly sensitive signals, and strong resistance to zero drift, variation of pulp flow speed, shock and vibration. The inner rotary pulp density sensor and the active-blade density sensor are the most reliable pulp density sensors with most stable performance currently.
  Sensors adopt tube measuring mode, and are simple for installation and easy for use with controller and DCS. The sensor is structured firmly and has good repeatability for measuring. It is able to measure pulp density value of whole range. It is applicable to measure various paper pulp and is free from influence of fiber composition, pulping degree, fillings, bubbles, pressure and vibration, etc.
  The pulp density sensor adopts microchip processer and directly convert shear force signals to pulp density with consideration of compensating various influence factors. The sensor adopts built-in converting curves, and features pre-calibration upon delivery, one-point calibration on field and precise installation & adjustment direction. The sensor is able to present absolute pulp density value within full range. The connection between the sensor and the controller or DCS can be realized through standard 4-20mA signals or digital communication. The sensor converter is set with a keyboard and a digital screen, so that setting operation can be totally and directly finished on the converter, not needing other auxiliary devices.

  Performance indexes
  Density measuring range        1.0%～16.0% (weight percentage)
  Sensitivity                           0.02% (density value)
  Density measuring accuracy      measured value ×0.5% or 0.03% density value
  Density measuring repeatability      measured value ×0.2% or 0.02% density value
  Density measuring response time     10s
  Density control accuracy             measuring value ×1.0% (mean square deviation )
  Signal output             4-20mA & RS-485
  Medium pressure                       1MPa\1.6MPa\2.5MPa
  Sensor material                     0Cr18Ni9 （AISI 304） /00Cr17Ni14Mo2（AISI316L）
  Medium temperature                    5-100℃
  Sensor working temperature       0-60℃
  Instrument working temperature     0-50℃
  Working environment humidity     10-85%
  Working voltage                       AC380V50Hz
  Power consumption                   ＜400W
  Reliability              25000h (MTBF)