Method for determining powder density Determination of true density and particle size: A common method is to replace the powder with a liquid or a gas. Liquid immersion method: The volume of liquid discharged by the powder is measured by heating or decompression degassing, which is the true volume of the powder. Determination of true density and particle size: A common method is to replace the powder with a liquid or a gas. Liquid immersion method: The volume of liquid discharged by the powder is measured by heating or decompression degassing, which is the true volume of the powder. Pycnometer method : Measuring principle: The powder is placed in a container filled with a liquid medium, and the liquid medium is sufficiently saturated into the opening of the powder particles. According to the Archimedes principle, the particle volume of the powder is measured, and the mass of the unit particle volume is calculated. The basic steps of the pycnometer method: ( 1 Calibration of pycnometer volume ( 2 ) Weighing of powder quality ( 3 Determination of powder volume (2) Determination of bulk density and tap density The volume measured by charging the powder into the container includes the true volume of the powder, Internal voids in the particles, voids between the particles, and the like. Measure the shape and size of the container, the filling speed of the material and the filling The method and the like all affect the volume of the powder. The density measured when no external force is applied is the bulk density The external force is applied to measure the powder in the tightest filling state. Density is the tap density.
Absolute rotary Encoder measure actual position by generating unique digital codes or bits (instead of pulses) that represent the encoder`s actual position. Single turn absolute encoders output codes that are repeated every full revolution and do not output data to indicate how many revolutions have been made. Multi-turn absolute encoders output a unique code for each shaft position through every rotation, up to 4096 revolutions. Unlike incremental encoders, absolute encoders will retain correct position even if power fails without homing at startup.
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