Microwave consistency meter A444

Microwave consistency meter A444
Microwave consistency meter A444

Brief description

Microwave meter A444 is the latest fourth generation of consistency sensors produced by Aquar-System more than 20 years and supplied customers in pulp and paper industry.


  • Description
  • Technical characteristics
  • Downloads
  • New device has significantly expanded the capabilities of its use in paper mills and acquired modern design, retaining the high accuracy and great reliability of previous devices’ generations.
    Advanced scientific research has greatly increased the range of measured consistency and upper limit of measured suspension temperature. Meters A444 are available in different sizes. New materials (high quality stainless steel, sitall, etc.) are used in production of A444.

    The microwave meter A444 determine the bulk concentration of all substances entering into the composition of the pulp(aqueous suspension), are insensitive to the type of fibers, their length, composition, grinding degree, color, flow speed. They have good repeatability, linearity and high sensitivity. The sensors are adapted to all types of a fibrous semimanufactures, insensitive to the change of water conductivity, and by this reason they are irreplaceable at the measurement of waste flows of paper pulp in the cellulose production process, at enterprises with the closed cycle of water circulation, as well as for use in water treatment facilities for concentration measuring of sludge in wastewater.

    The microwave meters are the universal means for measuring the concentration practically in all technological parts of machines for papermaking (cardboard) of all types and can be operated in most hard production conditions. Because of absence of mechanical moving parts the sensors are simple and reliable in maintenance. Only one concentration value is required for their calibration. The indication block made on the basis of the panel MT8070 TFT LCD allows monitoring current values of concentration, temperature and conductivity of the pulp, as well as their trends within the past day in the convenient for the operator form. The meters are easily adapted to ACS.

    At present more than 300 consistency meters produced by “Aquar-System LTD. are successfully operated at the biggest enterprises of the pulp-and-paper industry of Belarus, Russia, Ukraine, Poland and Kazakhstan.


  • Technical characteristics444
    Concentration measurement range 0 - 16 %
    Repeatability ±0.02% (abs.)
    Process temperature +5 - +95 °
    Environment temperature +0 - +50
    Pipeline diameter 80, 100, 150, 200, 250, 300 mm
    Output 4 - 20 m
    Communication interface RS-232, RS-485
    Pressure min. 1.5 bar
    Pressure max. 8 bar
    Medium conductivity max. 12.0 mS/cm
    Protection of the sensor and transformation blockIP 65
    Power supply 100-260 VAC, 25 W