MA-037 - CB Watch 3 Operating Manual
v7.0 - May 2020
Page 51 of 118
HMI: Measurements/Alarms
Figure 72
–
Excessive moisture alarm
Extrapolated gas pressure values
As seen before in section Data stacks6.1.4, the gas pressure values are stored in two
different stacks:
•
values in the “short
-
term” stack
recorded every 10 minutes
•
values in the “long
-
term” stack
recorded every day
These values are used to calculate a linear extrapolation/forecast of the pressure in the
future at the end of either the
“short
-
term” or “long
-
term”
time horizon that was set:
•
Short-term extrapolated pressure at 20°C: future value computed using linear
regression and a history of 2.5x the short-term horizon in minutes that has been set
•
Long-term extrapolated pressure at 20°C: future value computed using linear
regression and a history of 2.5x the long-term horizon in days that has been set
Figure 73
–
Linear gas pressure extrapolation