CPC G01T 1/178 (2013.01) [G01T 7/04 (2013.01)] | 10 Claims |
1. A radon measuring apparatus comprising:
a housing having two separate spaces and through holes formed such that each space communicates with the outside;
a probe unit having first and second probe rods which are respectively disposed inside each space in the opposite direction from each other inside the housing;
a control unit disposed inside the housing and connected to the probe unit; and
a switching unit for controlling the electrical connection between the first and second probe rods.
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