Sampling and Recording Dose Rate Meter.
DEPARTMENT OF THE ARMY WASHINGTON DC
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This patent application discloses a wide range radiation dose rate meter for civil defense use, including a Geiger-Mueller tube used in a continuous counting mode and for measuring dose rates from the natural background to about 30. radshr., with an ion chamber arranged to measure higher dose rates up to 10,000 radshr. The instrument has a sample and record capability in which the selected radiation detector will have its output connected to a selected storage capacitor for a precise interval of time determined by a timing circuit and the storage capacitor will accumulate and hold a voltage proportional to the dose rate, which can be read by means of an electrometer at a later time. The instrument has a self contained hand cranked power supply and all components are selected for long shelf life.
- Nuclear Instrumentation