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| Pulsation |
Cyclic
opening and closing of a liner |
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Simultaneous
pulsation |
When
cyclic movement of all liners within a cluster is synchronised. |
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Alternate
pulsation |
When
cyclic movement of half the number of liners within a cluster alternates
with the movement of the other half. |
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Pulsation
cycle |
One
complete liner movement sequence. |
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Pulsation
rate |
The
number of pulsation cycles per minute. |
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Pulsation
ratio |
The
sum of the durations of the increasing vacuum phase and the maximum vacuum
phase divided by the duration of the complete pulsation cycle in the
pulsation chamber vacuum. This ratio is expressed as a percentage by the
following expression:
(a+b / a+b+c+d) x 100. |
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Pulsator |
A
device for producing cyclic pressure change. |
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Pulsator
controller |
A
mechanism to operate pulsators, either integral with a single pulsator
(self contained pulsator) or a system controlling several pulsators.
(usually electronic) |
[also see dynamics of pulsation]
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