11
5.4.3
Hard Arrival Kinetic Energy Threshold
This is the equivalent kinetic energy of the Hard Arrival Velocity Threshold. This value is linked with the
Hard Arrival Velocity Threshold so that if one is changed the other changes as well.
Associated Alarms: Consecutive Hard Arrival Alarm, Cumulative Hard Arrival Alarm, Cumulative Kinetic
Energy Alarm
5.4.4
Dangerous Arrival Velocity Threshold
If the velocity of the plunger exceeds this threshold a dangerous arrival has occurred. This will trigger a
Dangerous Alarm.
Associated Alarm: Dangerous Arrival Alarm
5.4.5
Dangerous Arrival Kinetic Energy Threshold
This is the equivalent kinetic energy of the Dangerous Arrival Velocity Threshold. This value is linked with
the Hard Arrival Velocity Threshold so that if one is changed the other changes as well.
Associated Alarm: Dangerous Arrival Alarm
5.4.6
Consecutive Hard Arrival Alarm Threshold
This setting defines when a consecutive hard arrival alarm will trip. For example, if this setting is 3, then
3 consecutive arrivals with a velocity higher than the Hard Arrival threshold will cause an alarm flag to
be set.
Associated Alarm: Consecutive Hard Arrival Alarm
5.4.7
Cumulative Hard Arrival Threshold
The Sasquatch counts the number of arrivals above the Hard Arrival threshold. If this count exceeds the
Cumulative Hard Arrival Threshold, and alarm flag is set. These do not need to be consecutive hard
arrivals to trip the alarm.
Associated Alarm: Cumulative Hard Arrival Alarm
5.4.8
Cumulative Kinetic Energy Threshold
The Sasquatch accumulates (adds together) all kinetic energies for arrivals that exceed the Hard Arrival
threshold. When that sum exceeds the Cumulative Hard Arrival Threshold, an alarm will occur.
Associated Alarm: Cumulative Kinetic Energy Alarm
6
History
The following outlines the parameters that are required and the history records that are stored during
normal operation.
6.1
Parameters
The following parameters are used when storing each entry in the history.
