The current ambient pressure.
The current pressure in the measurement cell.
The current measurement cell pressure displayed as a raw voltage.
Defaults to Off. When turned On, the valves will be set to the same
state as during a Vacuum Set Pt. adjustment, but there is no
adjustment. Used for checking the accuracy of the vacuum
pressure calibration. There are no dialog boxes or prompts, so the
user needs to follow similar steps and precautions as during
Vacuum Set Pt.
Defaults to OFF. Similar to Vacuum Cal Mode, except the valves are
set to check the ambient calibration.
3.4.12 Flow Calibration Menu (Option)
Main Menu → Calibration Menu → Flow Calibration Menu
This menu only appears when the internal pump option is installed. Refer to Section 5.8 for the
calibration procedure. Setting the Pump Control to MANUAL will automatically disable the valve
sequencing ready for flow calibration.
Figure 54 – Flow Calibration Menu Screen
The desired sample flow target.
The current pressure in the measurement cell.
The flow at which the last flow calibration was performed. If Pump
Control is set to MANUAL and Internal Pump is ON, this field can be
edited to calibrate the current flow against a reference.
Calibration must be done at or near the flow set point for best results
(refer to Section 5.8).
If Pump Control is set to MANUAL and Internal Pump is OFF,
activating this command will calibrate the flow sensor zero point (refer
to Section 5.8).
Current sample flow through the instrument. This is only accurate
when reading close to the flow calibration point.
This field allows the internal pump to be turned ON or OFF. This field is
only editable when the Pump Control field is set to MANUAL.
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