Vibrating transmitter for consistency measurement
AssigneeBTG Pulp & Paper Sensors AB
InventorsPeter Lundberg, Joakim Kullander
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Abstract
The invention relates to a transmitter for consistency measuring of pulp suspensions at first hand, comprising a measuring body (1), shaped such as a blade, suspended in a vibration-producing apparatus. The measuring body (1) shaped such as blade (I′) shows wave-shaped side surfaces (9, 10) in its transverse direction and is vibratable in a frequency of oscillation between 20-80 Hz and with a predetermined amplitude of +/−2-8 mm, that provides a combination of both shearing force measurement and a measurement of the resistance of conveyance of liquid through a fiber netting.
Claims3
A transmitter for consistency measuring of pulp suspensions, comprising:
- a measuring body, shaped as a blade, suspended in a vibration-producing apparatus;
- and
- a linear position detecting sensor configured to measure an amplitude of the measuring body,
- wherein the measuring body shaped as the blade shows wave-shaped side surfaces in a transverse direction,
- wherein in a cross-section the wave-shaped side surfaces show one of:
- i) a sinusoidal wave-shape with rounded-off with longitudinal wave crests and wave troughs and
- ii) a wave-shape with saw-tooth shaped with rounded-off wave crests and wave troughs, and
- wherein the measuring body is configured to vibrate at a natural frequency of oscillation between 20-80 Hz and with the amplitude of +/−2-8 mm, the linear position detecting sensor measures the amplitude as a combination of both shearing force measurement and a measurement of the resistance of conveyance of liquid through a fiber netting.
Dependencies are inferred from the claim text.