| 主权项 |
1. A radiation monitor comprising:
a sampling unit that samples a sample gas; a detection unit that detects a radiation emitted from a radioactive substance in a sampled sample gas and outputs a radiation detection signal; and a measurement unit that measures a radiation, based on the radiation detection signal, and remotely controls the sampling unit, wherein the sampling unit includes an intake pipe that takes in a sampled sample gas, a mist/dust elimination unit that eliminates mist produced when steam in a sample gas condenses in the intake pipe and dust floating in a sample gas, creates a drain including dust, and separates the drain from the sample gas, an auto-drain that exhausts a drain discharged from the mist/dust elimination unit to the outside, a temperature sensor that detects the temperature of a sample gas discharged from the mist/dust elimination unit and outputs a temperature signal, a heater that dries the sample gas, the temperature of which has been detected by the temperature sensor, a pump that leads the dried sample gas to the detection unit and takes in the sample gas exhausted from the detection unit, and an exhaust pipe that exhausts the sample gas discharged from the pump, and wherein in the mist/dust elimination unit, mist wets fibers loaded therein in a stacked manner so that a water film produced on the surface of the fibers collects dust, and the water film grows to water drops and become drains so that the dust is exhausted and eliminated. |
