10 Settingsï€
144 Operation Manual
To zero a specific flow or pressure sensor
1 Select Settings > Calibration > Detectors, and select the desired detector.
2 Select On next to the desired sensor to zero it.
3 For Flow sensors. Verify that the gas is connected and flowing (turned on).
4 For Pressure sensors. Disconnect the gas supply line at the back of the GC. Turning it off is
not adequate; the valve may leak.
5 Reconnect any gas line disconnected in the previous step and restore operating flows.