Radiometric measuring apparatus

A radiometric measuring apparatus for detecting a measured variable in the form of a fill level, a point level, a density and/or a mass flow, the radiometric measuring apparatus comprising:

• a scintillator device, wherein the scintillator device is embodied to generate light pulses upon excitation by ionizing radiation;
• an optoelectronic sensor device, wherein the optoelectronic sensor device is embodied to convert the light pulses into a sensor signal;
• a first signal processing unit, wherein the first signal processing unit is embodied to process the sensor signal into a first measured variable signal;
• an adjustable second signal processing unit, wherein the second signal processing unit is embodied in a measurement setting to process the sensor signal into a second measured variable signal, wherein the second measured variable signal corresponds to the first measured variable signal in the case of a correctly processing first signal processing unit and a correctly processing second signal processing unit, and embodied in at least one operation setting to process the sensor signal into at least one operating variable signal, wherein the at least one operating variable signal does not correspond to the measured variable signals;
• a setting unit, wherein the setting unit is embodied to set the second signal processing unit into the measurement setting in measured variable time intervals and into the at least one operation setting in operating variable time intervals that alternate with the measured variable time intervals;
• and
• an assessment unit, wherein the assessment unit is embodied to compare the first measured variable signal and the second measured variable signal with one another and to assess the first signal processing unit and/or the second signal processing unit to be processing correctly or incorrectly, depending on a result of the comparison.