TSI Instruments PRESSURA 8630-PM, Operation And Service Manual

Page: 21 / 49

ALARM MENU
(continued)
MENU ITEM
SOFTWARE
NAME ITEM DESCRIPTION ITEM RANGE
DEFAULT
VALUE
MINIMUM
DUCT FLOW
ALARM
Premium
models only
MIN CFM
ALM
The MIN CFM ALM item sets the duct’s flow alarm set point. A
minimum flow alarm is defined as when the duct flow is less
than the MIN CFM ALM
set point.
OFF, 0 to 2832 ft/MIN
times the duct area in
square feet (ft
2
)
OFF
SECOND
SENSOR LOW
ALARM
Premium
models only
2 LOW ALM
The 2 LOW ALM item sets the second sensor’s low alarm set
point. A low alarm condition is defined as when the magnitude
of the second sensor’s room pressure falls below or goes in the
opposite direction of the 2 LOW ALM set point. The alarm can
be a negative or positive pressure alarm set point.
The second sensor low and high alarms must be programmed
for the same pressure direction; positive or negative. In
addition, the PresSura controller has a minimum dead band of
40 ft/min between the second sensor low and high alarms. The
dead band helps prevent nuisance alarms.
The second sensor monitors the room pressure of a second
space (typically an ante room), and is not part of the primary
sensor or control sequence. This alarm is on when the DIM is in
positive or negative mode.
This item is enabled when the second pressure sensor item is
enabled (see menu item 2 SENSOR).
OFF, 0 to +0.19500
"H
2
O
or 0 to -0.19500 "H
2
O
OFF
Tech
ni
cal
Sectio
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