Bulk material weighing container with pressure feedback
AssigneePfister GmbH
InventorHans Wilhelm Hafner
Life of this patent
Estimating the term…
Abstract
In order to provide a method of gravimetric metering of bulk materials with a calibration facility thus achieving higher weighing accuracy there is proposed a method wherein the pressure in the weighing container is measured and the weighing signal is only transferred from the weighing electronics to be registered when a limit pressure value is attained, especially atmospheric pressure.
Claims16
Apparatus for gravimetric metering of bulk material with a weighting container which is supported on at least one weighing cell connected to a weighing electronics and is connected by flexible connections to a bulk material feed line and a discharge line, wherein a pressure sensor is provided on the weighing container for detecting the pressure in the weighing container and the pressure sensor is connected to the weighing electronics for registering a weighing signal only when a limit pressure value is attained.
A method of metering of bulk materials, comprising the steps of:
- feeding the bulk material from a feed container to a weighing container;
- weighing the bulk material within the container with a device which generates a signal indicating the material weight;
- sending the signal to an electronic weighing and metering control;
- discharging the bulk material from the container;
- measuring the pressure within the container;
- and
- registering the signal indicating the weight of the bulk material when a predetermined pressure within the container is measured.
Dependencies are inferred from the claim text.