____________________________________________________________________________________________________________ MODELMODEL 25002500
level after a valve position change is ordered by the
MODEL 2500. When the variable is OFF, no
verification is performed.
Verify level variable The verify level variable specifies the cutoff value
for differential pressure across a tube set to be used
in verifying a valve position change. The default
value of this variable is 2.
Control number
variable The control number (#) variable displays the
number of the tube assigned as the current control
tube.
Individual tube switching parameters are listed for the first tube in a set in the
following order and repeat in that same order for each subsequent tube. Tubes are
listed in the desired sequence for switching the valves.
DP name Differential pressure name is the analog input variable
with a value that represents the current differential
pressure transmitted.
Low Low differential pressure switchpoint (expressed in
engineering units) across a tube when the valve
controlling the tube is closed. The default value for this
variable is 2.
High High differential pressure switchpoint (expressed in
engineering units) across a tube when the valve
controlling the tube is opened. The default value for this
variable is 98.
State Operational status of the tube being displayed (i.e.,
enabled, disabled, fault). The default status of this
variable is "enabled".
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SECTIONSECTION 44
50
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