(under subclass 336.1) Subject matter which includes a passageway containing moving material or a substance controlled by the moving material, a radiation source which may be the material itself, a detector responsive to the radiation from the source after passage of the radiation through the material or substance or the radiation from the material, wherein the detection forms the basis for a rate of flow determination and methods corresponding to the apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
258, for testing of wells involving the testing for leakage of fluids into or out of a well.
259+, for the use of tracer material in a well to test for leakage into or out of a well.
302+, for rate of flow metering using tracer materials.
306+, for rate of flow testing using charge particles.
359.1, for fluent material level tests. 432+, for rate of flow testing of confined moving fluids using a nonelectric detector.
SEE OR SEARCH CLASS
378, X-Ray or Gamma Ray Systems or Devices,
51, for X-ray devices which may include flow metering.
