Pressure Controller/Calibrator
Operation
39
.Pressure Measurement
A visual measurement indicator on the UI (also known as the “Ready indicator”)
indicates when pressure is stable enough to be measured. See Table 13 for a list
of measurement indicators and their definitions. For the indicator to change to
“Ready”, the rate of pressure change must be within the stability limits and the
pressure must be inside the hold-limit range for the active pressure control mode.
Table 13. Measurement Indicator
Indicator Definition
Not Ready
Indicates unstable pressure that is not within stability limits. The Product
cannot make a measurement at this time.
Ready
Indicates stable pressure that is within stability limits. The Product can make a
measurement at this time.
Vented
This is shown when the Product is vented to indicate that the Product can now
make an ATM or 0 psig measurement.
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