Gas e.g. radon, parameter e.g. concentration, measuring device for e.g. seismic zone, has chamber with sensors for measuring concentration of two isotopes of radon in gas flow, temperature sensor, and pressure sensor

摘要

The device has a measurement chamber (1) opened at a lower part (1a) and closed at an upper part (1b). The chamber ensures flow of gas from bottom towards top and receives sensors (7a, 7b, 7c) for measuring concentration of radon, in two isotopes, contained in gas flow. Temperature sensors (8a, 8b, 8c) measure temperature of the chamber. A sensor (16) measures the pressure inside the chamber and at the level of ground. An independent claim is also included for a method for measuring concentration of radon from ground in continuous and in situ manner.