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The instrument has been designed to measure concentration and grain-size distribution of particles irrespective of their physical and chemical properties. These include solid and oil particles or air bubbles. The volume of solution can be programmed from 1 to 2000 cm3. Measurements are taken in a programmed amount of water ranging from 1 to 2000 cm3. Measuring range is between 0.5 to 600 mm. A protocol is printed after the measurement, according to the user’s requirements.
The measurement method of the IPS analyser is complex and consists in” measurement with regard to influence of laser diffraction for the smallest particles in order to go on, for larger particles, in a continuous and gradual manner, to measure changes in the radiation stream scattered by moving particles. In this way, certain disadvantages of the “laser diffraction” used in the entire measuring range in which individual, largest particles yield weak changes in the diffraction pattern have been eliminated. There are no optical limitations for measuring individual, small and large particles in the IPS analysers. The laser radiation stream in infrared not only identifies size of particles, but also renders counting them precisely in the entire measuring range possible.An electric impulse corresponds to each participle. The impulse is proportional to the particle size. The set of particles is initially measured with the division into 4096 channels and converted (calibrated) into 256 size classes, which are available to a user.
Water solution with suspended particles from the container  is entered through the drain  to the water flowing through the analyser between union pieces  and . The water flow is adjusted automatically after activating the volumetric pump  with the switch . Three colour LEDs  inform about the operational conditions of the analyser. The container  hangs on the volumeter arm , which determines through weighing the volume of solution being measured. Measurement of particle size is completely automated and controlled by the computer . Measurements of any given volumes can be programmed.
It has been shown on the hydraulic diagram of the IPS LCW analyser that the water flowing in through the union piece , and being passed through the electric valve , is dosed by the manual valve  so that the float does not exceed the upper level of the sensor  and is above the lower level of the sensor . This is followed by a pressure drop to the column of water determined by the float level  on the valve  and filter . The change in pressure causes air bubbles to be released in the water. The valves ,  and  are used to vent the analyser. The electric valves  and  open automatically after the measurements have been completed. The filter  purifies the water from particles larger than 0.4 mm. The filter  operations (permeability) are controlled by means of the pressure gauge . “Clean water” supplied to the chamber  flows into the sensor measuring zone , with the needle from which water solution with suspended particles flows out. “The clean water” in the sensor  protects the optics from dirt. The analyser automatically stops after the solution is sucked out from the container . The computer-controlled volumetric pump  behind the sensor  additionally sucks in the water. The water with suspension flows from the collector  to the analyser through the union piece .Apart from the measurement program determining concentration of particles in a volume unit, the other programs are also provided, e.g. optimisation program for a given parameter in the granulation function of suspension being tested, calibration program converting granulations in a given calibration, whether sieve, aerometric or spherical. Test results are presented on multi-coloured diagrams and in the form of legible tables.
|-||Measuring range||0,2 - 600 µm|
|-||Number of measurment classes||256|
|-||Light source||Infrared or laser diode|
|-||Power supply||230 V AC, 50 Hz|
|-||Operating temperature||273 do 313 K|
|-||Analyser weight||12 kg|
Recording and archiving measurement results:
|-||The main electronic IPS unit with A/C board|
Set of cables
|-||Software kit (measuring, optimising and calibrating applications)|
We supply complete, ready-to-use instruments and measuring systems. We ensure full training courses, technical support and warranty and post-warranty service as the producer