Method for Operating a Radiometric Measuring Device, and Radiometric Measuring Device
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United States of America Patent
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Jun 25, 2020
app pub date -
Dec 3, 2019
filing date -
Dec 21, 2018
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Abstract
A radiometric measuring device has a counting tube having an anode and a cathode, and is configured to determine a measurement variable depending on properties of ionizing radiation that impinges on the counting tube. In a first measurement mode, a constant first voltage is set between anode and cathode such that the counting tube operates as a proportional counting tube, and the measurement variable is determined depending on a current flowing between anode and cathode. In a second measurement mode, the current flowing between anode and cathode is controlled to a current setpoint value, wherein the voltage between anode and cathode serves as a manipulated variable of the current control, and the measurement variable is determined depending on the voltage between anode and cathode. In a third measurement mode, a constant second voltage is set between anode and cathode such that the counting tube operates as an ionization chamber, and the measurement variable is determined depending on the current flowing between anode and cathode. Either the first, second, or third measurement mode is activated depending on the current flowing between anode and cathode and/or depending on the voltage between anode and cathode.
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