TSI Instruments SUREFLOW 8635-M, Руководство по эксплуатации и обслуживанию

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32 Part Two
The ANALOG OUT item is used to vary the analog output from the SureFlow
unit. When this item is entered, a number will be shown on the display indicating
the last analog output value. The value displayed ranges from 0 to 255. The
value 255 corresponds to the lowest voltage (current) output and 0 corresponds
to the highest voltage (current) output. Pressing the

key will decrease the
analog output and increase the value displayed. Pressing the

key will
increase the analog output and decrease the value displayed.
The ANALOG OUT function can be used in conjunction with a volt meter to verify
the analog output is correct.
Switch Input
Menu Item - SWITCH INPUT
The SWITCH INPUT item reads the input of the SWITCH IN contact pins 11 and
12. When this item is entered, the display will indicate either open or closed. If
the display indicates open, the DIM is in LOW ALARM, HIGH ALARM and
ALARM DELAY mode. If the display indicates closed, the DIM is in REM LOW
ALM, REM HIGH ALM, and DOOR DELAY mode.
SWITCH INPUT changes both alarm and alarm delay when closed. If the same
alarm or alarm delay is required, set both alarms or delays to same value.
Flow Input
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
) - pressure based
flow station.
5 volts displayed equals TOP VELOCITY x duct area (ft
2
)- linear flow
stations (see Configure menu, TOP VELOCITY item).
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
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.