| 摘要 |
In one embodiment, a device (100) for measuring concentration of a paramagnetic gas is provided. The device (100) comprises a measuring cell (105) having a closed cavity (107) therein, a reference gas conduit (115) extending into the cavity (107) for supplying a reference gas to the measuring cell (105), the reference gas comprising a predetermined concentration of the paramagnetic gas, a measurable gas conduit (110) extending into the cavity (107) for supplying a measurable gas to the measuring cell (105), the measurable gas comprising a measurable concentration of the paramagnetic gas, a first microphone (120) differentially coupled to the measurable gas conduit (110) and the reference gas conduit (115), and a second microphone (122) located at a predetermined distance from the reference gas conduit (115).
|
