| 摘要 |
An instrument for measuring the concentration of water isotopes in a gas sample loaded with water vapour, includes an analyser; a vaporiser including a circuit that connects to the analyser to transmit a vaporised calibration liquid to the analyser and an output circuit for discharging the overflow of the vaporised calibration liquid, the output circuit arranged such that the overflow is discharged without passing through the analyser and a purge circuit connected to the input of the vaporiser for sucking said vaporised purge fluid through the vaporiser during a purge operation, the purge circuit arranged such that the vaporised purge fluid does not pass through the analyser; a selector for selectively establishing a first state establishing the circulation of the calibration liquid through the connection circuit and the circulation of the overflow through the output circuit and a second state establishing the circulation of the purge liquid through the purge circuit. |
