Patent ID: 11953203
Assignee: THERMO FISHER SCIENTIFIC (BREMEN) GMBH
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F  G

Claim 7:
8. The gas supply system according to claim 1, further comprising
an alternative oxidant gas supply line for providing a supply of an alternative oxidant gas;
a three way valve arranged upstream of the oxidant gas valve connected to the oxidant gas supply line and the alternative oxidant gas supply line;
a third switch connected to the three way valve;
wherein
during normal operation, the third switch is configured to control the three way valve to fluidly connect either the oxidant gas supply line or the alternative oxidant gas supply line to the oxidant gas valve, and
in the event of a power failure, the third switch is configured to control the three way valve to fluidly connect the oxidant gas supply line to the oxidant gas valve.