TSI Instruments PRESSURA 8630-PM, Operation And Service Manual

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Part Two
32
Key Switch Input
Menu Item - KEY INPUT
The KEY INPUT item reads the position of the TSI key switch. When this item is
entered, the display will indicate either POSITIVE, NEGATIVE, or NO
ISOLATION. If the display indicates POSITIVE, the TSI key switch has the
PresSura controller in positive pressure mode. If the display indicates
NEGATIVE, the TSI key switch has the PresSura controller in the negative
pressure mode. If the display indicates NO ISOLATION, the TSI key switch has
the PresSura controller in no isolation mode.
In normal operation, the key switch is not enabled unless ROOM MODE item has
KEY SWITCH selected.
Flow Input (Premium models only)
Menu Item - FLOW INPUT
The FLOW INPUT item is used to read the input from the flow station. When this
item is entered, a voltage will be indicated on the display. The exact voltage
displayed is relatively unimportant. It is more important that the voltage is
changing which indicates the flow station is working correctly.
0 volts displayed equals zero flow.
5 volts displayed equals 2832 ft/min x duct area (ft)
2
Low Alarm Relay
Menu Item -
LOW ALM REL
The LOW ALM REL item is used to change the state of the low alarm relay.
When this item is entered, the display will indicate either OPEN or CLOSED. The

/

keys are used to toggle the state of the relay. The

key is used to OPEN
the alarm contact. The

key is used to CLOSE the alarm contact. When the
contact is closed, the LOW ALM REL should be in an alarm condition.
High Alarm Relay (premium models only)
Menu Item - HIGH ALM REL
The HIGH ALM REL item is used to change the state of the high alarm relay.
When this item is entered, the display will indicate either OPEN or CLOSED. The

/

keys are used to toggle the state of the relay. The

key is used to OPEN
the alarm contact. The

key is used to CLOSE the alarm contact. When the
contact is closed, the HIGH ALM REL should be in an alarm condition.
Access Code
Menu Item - ACCESS CODE
The ACCESS CODE item selects whether an access code (pass code) is required to
enter the menu. The ACCESS CODE item prevents unauthorized access to a menu. If
the ACCESS
CODE is ON, a code is required before the menu can be entered.
Conversely, if the ACCESS CODE is OFF, no code is required to enter the menu.