Serinus 40 User Manual 2.2
7. Open the shut off valve on the zero-air cylinder; adjust the regulator pressure until the flow on
the vent line (Auxiliary Out Port) is between 0.5 and 1 lpm.
8. Change Set Cal Port to External (Main Menu → Calibration Menu) then select span under the
Cal Mode option this will initiate the pressurised span calibration.
9. Open the shut off valve on the span-gas cylinder; adjust the regulator pressure until the flow on
the vent line (Auxiliary Out Port) is between 0.5 and 1 lpm.
Note: Do not exceed a pressure of 2 bar, this can damage the analyser and cause gas
leakage.
Return to Normal Operation
1. Set Cal. Mode → Measure.
2. Remove the flow meter from the Auxiliary Out Port and connect a vent line to the port.
3. Reconnect instrument fittings and place in original set-up.
4. The instrument is now in normal operation mode.
Figure 50 – Dual high pressure calibration option
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