| 摘要 |
A throw-away probe having a gas supply line and a gas removal line is connected to the lance by means of a quick-connection coupling having sections through which extend the ends of a gas circuit connected to the gas lines. The gas supply line contains drying means , is sealed at the bottom by a fusible stopper and is sealed in the coupling by a stopper which was pricked when installing the probe on the lance. The fusible stopper melts when the probe is immersed in the bath. The carrier gas which is pumped round through the gas detector in the circuit, is dried. |
