US 11,898,888 B2
Radiometric measuring device for determining a mass flow rate
Robert Laun, Hausach (DE); and Natalie Waldecker, Ortenberg (DE)
Assigned to VEGA GRIESHABER KG, Wolfach (DE)
Filed by VEGA GRIESHABER KG, Wolfach (DE)
Filed on Dec. 14, 2021, as Appl. No. 17/644,134.
Claims priority of application No. 10 2020 133 594.6 (DE), filed on Dec. 15, 2020.
Prior Publication US 2022/0187109 A1, Jun. 16, 2022
Int. Cl. G01F 1/00 (2022.01); G01F 25/10 (2022.01); B65G 43/00 (2006.01)
CPC G01F 1/00 (2013.01) [B65G 43/00 (2013.01); G01F 25/10 (2022.01); B65G 2201/04 (2013.01); B65G 2203/0208 (2013.01); B65G 2203/042 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A radiometric measuring device for determining a mass flow rate of a bulk material on a conveyor belt, comprising:
at least one detector configured to detect at least part of radiation of at least one radiation source that emits the radiation in a direction of the bulk material on the conveyor belt, the radiation having at least partially passed through the bulk material and the conveyor belt;
at least one evaluation circuit configured to determine a mass flow of the bulk material on a basis of the detected radiation;
at least one storage which is configured to store at least one measured value equation, the measured value equation representing a relationship between the detected radiation and the mass flow; and
at least one electronic calculation means which is configured to determine, based on at least one calibration measurement without bulk material on the conveyor belt, a correction equation with which the measured value equation is corrected,
wherein the calibration measurement is performed after a belt of the conveyor belt is changed.